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EutrophicationBaltic StatesWater Pollution, ChemicalPhytoplanktonDrainage, SanitaryLakesFresh WaterZooplanktonOceans and SeasEcosystemPhosphorusHarmful Algal BloomWater PollutionHuman ActivitiesWater QualityNitrogenSeaweedFertilizersClimatic ProcessesZosteraceaeBiomassEnvironmental MonitoringBiodiversityWater MovementsGeologic SedimentsNitrosomonadaceaeEnvironmentWater Pollutants, ChemicalAnthozoaSeawaterAnimal DiseasesRiversEukaryotaWater MicrobiologyFood ChainAgricultureConservation of Natural ResourcesSoilPopulation DynamicsClimate ChangePopulation DensityWater SupplyEcologyWaterModels, TheoreticalEncyclopedias as TopicEichhorniaEstuariesConsumer ParticipationLeechesEncyclopediasDictionaries, MedicalDictionaries as Topic
Eutrophication: The enrichment of a terrestrial or aquatic ECOSYSTEM by the addition of nutrients, especially nitrogen and phosphorus, that results in a superabundant growth of plants, ALGAE, or other primary producers. It can be a natural process or result from human activity such as agriculture runoff or sewage pollution. In aquatic ecosystems, an increase in the algae population is termed an algal bloom.Baltic States: The collective name for the republics of ESTONIA; LATVIA; and LITHUANIA on the eastern shore of the Baltic Sea. (Webster's New Geographical Dictionary, 1988, p111)Water Pollution, Chemical: Adverse effect upon bodies of water (LAKES; RIVERS; seas; groundwater etc.) caused by CHEMICAL WATER POLLUTANTS.Phytoplankton: Free-floating minute organisms that are photosynthetic. The term is non-taxonomic and refers to a lifestyle (energy utilization and motility), rather than a particular type of organism. Most, but not all, are unicellular algae. Important groups include DIATOMS; DINOFLAGELLATES; CYANOBACTERIA; CHLOROPHYTA; HAPTOPHYTA; CRYPTOMONADS; and silicoflagellates.Drainage, Sanitary: A system of artificial or natural drains, generally used for the disposal of liquid wastes.Lakes: Inland bodies of still or slowly moving FRESH WATER or salt water, larger than a pond, and supplied by RIVERS and streams.Fresh Water: Water containing no significant amounts of salts, such as water from RIVERS and LAKES.Zooplankton: Minute free-floating animal organisms which live in practically all natural waters.Oceans and Seas: A great expanse of continuous bodies of salt water which together cover more than 70 percent of the earth's surface. Seas may be partially or entirely enclosed by land, and are smaller than the five oceans (Atlantic, Pacific, Indian, Arctic, and Antarctic).Ecosystem: A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)Phosphorus: A non-metal element that has the atomic symbol P, atomic number 15, and atomic weight 31. It is an essential element that takes part in a broad variety of biochemical reactions.Harmful Algal Bloom: An algal bloom where the algae produce powerful toxins that can kill fish, birds, and mammals, and ultimately cause illness in humans. The harmful bloom can also cause oxygen depletion in the water due to the death and decomposition of non-toxic algae species.Water Pollution: Contamination of bodies of water (such as LAKES; RIVERS; SEAS; and GROUNDWATER.)Human Activities: Activities performed by humans.Water Quality: A rating of a body of water based on measurable physical, chemical, and biological characteristics.Nitrogen: An element with the atomic symbol N, atomic number 7, and atomic weight [14.00643; 14.00728]. Nitrogen exists as a diatomic gas and makes up about 78% of the earth's atmosphere by volume. It is a constituent of proteins and nucleic acids and found in all living cells.Seaweed: Multicellular marine macroalgae including some members of red (RHODOPHYTA), green (CHLOROPHYTA), and brown (PHAEOPHYTA) algae. They are widely distributed in the ocean, occurring from the tide level to considerable depths, free-floating (planktonic) or anchored to the substratum (benthic). They lack a specialized vascular system but take up fluids, nutrients, and gases directly from the water. They contain CHLOROPHYLL and are photosynthetic, but some also contain other light-absorbing pigments. Many are of economic importance as FOOD, fertilizer, AGAR, potash, or source of IODINE.Fertilizers: Substances or mixtures that are added to the soil to supply nutrients or to make available nutrients already present in the soil, in order to increase plant growth and productivity.Climatic Processes: Characteristic events occurring in the ATMOSPHERE during the interactions and transformation of various atmospheric components and conditions.Zosteraceae: A plant family of the order Najadales, subclass ALISMATIDAE, class Liliopsida (monocotyledons). This is a group of perennial aquatic herbs with basal leaves.Biomass: Total mass of all the organisms of a given type and/or in a given area. (From Concise Dictionary of Biology, 1990) It includes the yield of vegetative mass produced from any given crop.Environmental Monitoring: The monitoring of the level of toxins, chemical pollutants, microbial contaminants, or other harmful substances in the environment (soil, air, and water), workplace, or in the bodies of people and animals present in that environment.Biodiversity: The variety of all native living organisms and their various forms and interrelationships.Water Movements: The flow of water in enviromental bodies of water such as rivers, oceans, water supplies, aquariums, etc. It includes currents, tides, and waves.Geologic Sediments: A mass of organic or inorganic solid fragmented material, or the solid fragment itself, that comes from the weathering of rock and is carried by, suspended in, or dropped by air, water, or ice. It refers also to a mass that is accumulated by any other natural agent and that forms in layers on the earth's surface, such as sand, gravel, silt, mud, fill, or loess. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1689)Nitrosomonadaceae: A family of gram-negative nitrifying bacteria, in the order Nitrosomonadales, class BETAPROTEOBACTERIA.Environment: The external elements and conditions which surround, influence, and affect the life and development of an organism or population.Water Pollutants, Chemical: Chemical compounds which pollute the water of rivers, streams, lakes, the sea, reservoirs, or other bodies of water.Anthozoa: A class in the phylum CNIDARIA, comprised mostly of corals and anemones. All members occur only as polyps; the medusa stage is completely absent.Seawater: The salinated water of OCEANS AND SEAS that provides habitat for marine organisms.Animal DiseasesRivers: Large natural streams of FRESH WATER formed by converging tributaries and which empty into a body of water (lake or ocean).Eukaryota: One of the three domains of life (the others being BACTERIA and ARCHAEA), also called Eukarya. These are organisms whose cells are enclosed in membranes and possess a nucleus. They comprise almost all multicellular and many unicellular organisms, and are traditionally divided into groups (sometimes called kingdoms) including ANIMALS; PLANTS; FUNGI; and various algae and other taxa that were previously part of the old kingdom Protista.Water Microbiology: The presence of bacteria, viruses, and fungi in water. This term is not restricted to pathogenic organisms.Food Chain: The sequence of transfers of matter and energy from organism to organism in the form of FOOD. Food chains intertwine locally into a food web because most organisms consume more than one type of animal or plant. PLANTS, which convert SOLAR ENERGY to food by PHOTOSYNTHESIS, are the primary food source. In a predator chain, a plant-eating animal is eaten by a larger animal. In a parasite chain, a smaller organism consumes part of a larger host and may itself be parasitized by smaller organisms. In a saprophytic chain, microorganisms live on dead organic matter.Agriculture: The science, art or practice of cultivating soil, producing crops, and raising livestock.Conservation of Natural Resources: The protection, preservation, restoration, and rational use of all resources in the total environment.Soil: The unconsolidated mineral or organic matter on the surface of the earth that serves as a natural medium for the growth of land plants.Population Dynamics: The pattern of any process, or the interrelationship of phenomena, which affects growth or change within a population.Climate Change: Any significant change in measures of climate (such as temperature, precipitation, or wind) lasting for an extended period (decades or longer). It may result from natural factors such as changes in the sun's intensity, natural processes within the climate system such as changes in ocean circulation, or human activities.Population Density: Number of individuals in a population relative to space.Water Supply: Means or process of supplying water (as for a community) usually including reservoirs, tunnels, and pipelines and often the watershed from which the water is ultimately drawn. (Webster, 3d ed)Ecology: The branch of science concerned with the interrelationship of organisms and their ENVIRONMENT, especially as manifested by natural cycles and rhythms, community development and structure, interactions between different kinds of organisms, geographic distributions, and population alterations. (Webster's, 3d ed)Water: A clear, odorless, tasteless liquid that is essential for most animal and plant life and is an excellent solvent for many substances. The chemical formula is hydrogen oxide (H2O). (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)Models, Theoretical: Theoretical representations that simulate the behavior or activity of systems, processes, or phenomena. They include the use of mathematical equations, computers, and other electronic equipment.Encyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)Eichhornia: A plant genus of the family PONTEDERIACEAE that is used as a biological filter for treating wastewater.Estuaries: A partially enclosed body of water, and its surrounding coastal habitats, where saltwater from the ocean mixes with fresh water from rivers or streams. The resulting mixture of seawater and fresh water is called brackish water and its salinity can range from 0.5 to 35 ppt. (accessed http://oceanservice.noaa.gov/education/kits/estuaries/estuaries01_whatis.html)Consumer Participation: Community or individual involvement in the decision-making process.Leeches: Annelids of the class Hirudinea. Some species, the bloodsuckers, may become temporarily parasitic upon animals, including man. Medicinal leeches (HIRUDO MEDICINALIS) have been used therapeutically for drawing blood since ancient times.EncyclopediasDictionaries, MedicalDictionaries as Topic: Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.

Dynamics of bacterial community composition and activity during a mesocosm diatom bloom. (1/248)

Bacterial community composition, enzymatic activities, and carbon dynamics were examined during diatom blooms in four 200-liter laboratory seawater mesocosms. The objective was to determine whether the dramatic shifts in growth rates and ectoenzyme activities, which are commonly observed during the course of phytoplankton blooms and their subsequent demise, could result from shifts in bacterial community composition. Nutrient enrichment of metazoan-free seawater resulted in diatom blooms dominated by a Thalassiosira sp., which peaked 9 days after enrichment ( approximately 24 microg of chlorophyll a liter(-1)). At this time bacterial abundance abruptly decreased from 2.8 x 10(6) to 0.75 x 10(6) ml(-1), and an analysis of bacterial community composition, by denaturing gradient gel electrophoresis (DGGE) of PCR-amplified 16S rRNA gene fragments, revealed the disappearance of three dominant phylotypes. Increased viral and flagellate abundances suggested that both lysis and grazing could have played a role in the observed phylotype-specific mortality. Subsequently, new phylotypes appeared and bacterial production, abundance, and enzyme activities shifted from being predominantly associated with the <1.0-microm size fraction towards the >1.0-microm size fraction, indicating a pronounced microbial colonization of particles. Sequencing of DGGE bands suggested that the observed rapid and extensive colonization of particulate matter was mainly by specialized alpha-Proteobacteria- and Cytophagales-related phylotypes. These particle-associated bacteria had high growth rates as well as high cell-specific aminopeptidase, beta-glucosidase, and lipase activities. Rate measurements as well as bacterial population dynamics were almost identical among the mesocosms indicating that the observed bacterial community dynamics were systematic and repeatable responses to the manipulated conditions.  (+info)

Forecasting agriculturally driven global environmental change. (2/248)

During the next 50 years, which is likely to be the final period of rapid agricultural expansion, demand for food by a wealthier and 50% larger global population will be a major driver of global environmental change. Should past dependences of the global environmental impacts of agriculture on human population and consumption continue, 10(9) hectares of natural ecosystems would be converted to agriculture by 2050. This would be accompanied by 2.4- to 2.7-fold increases in nitrogen- and phosphorus-driven eutrophication of terrestrial, freshwater, and near-shore marine ecosystems, and comparable increases in pesticide use. This eutrophication and habitat destruction would cause unprecedented ecosystem simplification, loss of ecosystem services, and species extinctions. Significant scientific advances and regulatory, technological, and policy changes are needed to control the environmental impacts of agricultural expansion.  (+info)

Possible estuary-associated syndrome: symptoms, vision, and treatment. (3/248)

The human illness designated as possible estuarine-associated syndrome (PEAS) by the Centers for Disease Control and Prevention (CDC) has been associated with exposure to estuaries inhabited by toxin-forming dinoflagellates, including members of the fish-killing toxic Pfiesteria complex (TPC), Pfiesteria piscicida and Pfiesteria shumwayae. Humans may be exposed through direct contact with estuarine water or by inhalation of aerosolized or volatilized toxin(s). The five cases reported here demonstrate the full spectrum of symptoms experienced during acute and chronic stages of this suspected neurotoxin-mediated illness. The nonspecific symptoms most commonly reported are cough, secretory diarrhea, headache, fatigue, memory impairment, rash, difficulty in concentrating, light sensitivity, burning skin upon water contact, muscle ache, and abdominal pain. Less frequently encountered symptoms are upper airway obstruction, shortness of breath, confusion, red or tearing eyes, weakness, and vertigo. Some patients experience as few as four of these symptoms. The discovery that an indicator of visual pattern-detection ability, visual contrast sensitivity (VCS), is sharply reduced in affected individuals has provided an objective indicator that is useful in diagnosing and monitoring PEAS. VCS deficits are present in both acute and chronic PEAS, and VCS recovers during cholestyramine treatment coincident with symptom abatement. Although PEAS cannot yet be definitively associated with TPC exposure, resolution with cholestyramine treatment suggests a neurotoxin-mediated illness.  (+info)

Pfiesteria-related educational products and information resources available to the public, health officials, and researchers. (4/248)

Public and political concerns about Pfiesteria from 1997 to the present vastly exceed the attention given to other harmful algal bloom (HAB) issues in the United States. To some extent, the intense focus on Pfiesteria has served to increase attention on HABs in general. Given the strong and continuing public, political, and research interests in Pfiesteria piscicida Steidinger & Burkholder and related organisms, there is a clear need for information and resources of many different types. This article provides information on Pfiesteria-related educational products and information resources available to the general public, health officials, and researchers. These resources are compiled into five categories: reports; website resources; state outreach and communication programs; fact sheets; and training manuals and documentaries. Over the last few years there has been rapid expansion in the amount of Pfiesteria-related information available, particularly on the Internet, and it is scattered among many different sources.  (+info)

The role of nutrient loading and eutrophication in estuarine ecology. (5/248)

Eutrophication is a process that can be defined as an increase in the rate of supply of organic matter (OM) to an ecosystem. We provide a general overview of the major features driving estuarine eutrophication and outline some of the consequences of that process. The main chemical constituent of OM is carbon (C), and therefore rates of eutrophication are expressed in units of C per area per unit time. OM occurs in both particulate and dissolved forms. Allochthonous OM originates outside the estuary, whereas autochthonous OM is generated within the system, mostly by primary producers or by benthic regeneration of OM. The supply rates of limiting nutrients regulate phytoplankton productivity that contributes to inputs of autochthonous OM. The trophic status of an estuary is often based on eutrophication rates and can be categorized as oligotrophic (<100 g C m(-2) y(-1), mesotrophic (100-300 g C m(-2) y(-1), eutrophic (300-500 g C m(-2) y(-1), or hypertrophic (>500 g C m(-2) y(-1). Ecosystem responses to eutrophication depend on both export rates (flushing, microbially mediated losses through respiration, and denitrification) and recycling/regeneration rates within the estuary. The mitigation of the effects of eutrophication involves the regulation of inorganic nutrient (primarily N and P) inputs into receiving waters. Appropriately scaled and parameterized nutrient and hydrologic controls are the only realistic options for controlling phytoplankton blooms, algal toxicity, and other symptoms of eutrophication in estuarine ecosystems.  (+info)

State monitoring activities related to Pfiesteria-like organisms. (6/248)

In response to potential threats to human health and fish populations, six states along the east coast of the United States initiated monitoring programs related to Pfiesteria-like organisms in 1998. These actions were taken in the wake of toxic outbreaks of Pfiesteria piscicida Steidinger & Burkholder in Maryland during 1997 and previous outbreaks in North Carolina. The monitoring programs have two major purposes. The first, rapid response, is to ensure public safety by responding immediately to conditions that may indicate the presence of Pfiesteria or related organisms in a toxic state. The second, comprehensive assessment, is to provide a more complete understanding of where Pfiesteria-like organisms may become a threat, to understand what factors may stimulate their growth and toxicity, and to evaluate the impacts of these organisms upon fish and other aquatic life. In states where human health studies are being conducted, the data from both types of monitoring are used to provide information on environmental exposure. The three elements included in each monitoring program are identification of Pfiesteria-like organisms, water quality measurements, and assessments of fish health. Identification of Pfiesteria-like organisms is a particularly difficult element of the monitoring programs, as these small species cannot be definitively identified using light microscopy; newly applied molecular techniques, however, are starting to provide alternatives to traditional methods. State monitoring programs also offer many opportunities for collaborations with research initiatives targeting both environmental and human health issues related to Pfiesteria-like organisms.  (+info)

Field ecology of toxic Pfiesteria complex species and a conservative analysis of their role in estuarine fish kills. (7/248)

Within the past decade, toxic Pfiesteria outbreaks have been documented in poorly flushed, eutrophic areas of the largest and second largest estuaries on the U.S. mainland. Here we summarize a decadal field effort in fish kill assessment, encompassing kills related to Pfiesteria (49 major kills in North Carolina estuaries since 1991 and 4 in Maryland estuaries in 1997) and to other factors such as low oxygen stress (79 major fish kills in North Carolina estuaries). The laboratory and field data considered in developing our protocols are described, including toxic Pfiesteria behavior, environmental conditions conducive to toxic Pfiesteria activity, and impacts of toxic clonal Pfiesteria on fish health. We outline the steps of the standardized fish bioassay procedure that has been used since 1991 to diagnose whether actively toxic Pfiesteria was present during estuarine fish kills. Detailed data are given for a 1998 toxic Pfiesteria outbreak in the Neuse Estuary in North Carolina to illustrate of the full suite of diagnostic steps completed. We demonstrate that our conservative approach in implicating toxic Pfiesteria involvement in fish kills has biased in favor of causes other than Pfiesteria. Data are summarized from experiments that have shown stimulation of toxic Pfiesteria strains by nutrient (N, P) enrichment, supporting field observations of highest abundance of toxic strains in eutrophic estuaries. On the basis of a decade of research on toxic Pfiesteria, we present a conceptual model of the seasonal dynamics of toxic strains as affected by changing food resources and weather patterns. We also recommend protocols and research approaches that will strengthen the science of fish kill assessment related to Pfiesteria and/or other causative factors.  (+info)

History and timing of human impact on Lake Victoria, East Africa. (8/248)

Lake Victoria, the largest tropical lake in the world, suffers from severe eutrophication and the probable extinction of up to half of its 500+ species of endemic cichlid fishes. The continuing degradation of Lake Victoria's ecological functions has serious long-term consequences for the ecosystem services it provides, and may threaten social welfare in the countries bordering its shores. Evaluation of recent ecological changes in the context of aquatic food-web alterations, catchment disturbance and natural ecosystem variability has been hampered by the scarcity of historical monitoring data. Here, we present high-resolution palaeolimnological data, which show that increases in phytoplankton production developed from the 1930s onwards, which parallels human-population growth and agricultural activity in the Lake Victoria drainage basin. Dominance of bloom-forming cyanobacteria since the late 1980s coincided with a relative decline in diatom growth, which can be attributed to the seasonal depletion of dissolved silica resulting from 50 years of enhanced diatom growth and burial. Eutrophication-induced loss of deep-water oxygen started in the early 1960s, and may have contributed to the 1980s collapse of indigenous fish stocks by eliminating suitable habitat for certain deep-water cichlids. Conservation of Lake Victoria as a functioning ecosystem is contingent upon large-scale implementation of improved land-use practices.  (+info)

研究队伍----中国科学院南京地理与湖泊研究所研究队伍----中国科学院南京地理与湖泊研究所
1. QIN Boqiang, XIE Ping (eds). Nutrient Cycling, Loading and Eutrophication in Lakes from Middle and Lower Reaches of Yangtze River. 2006, Sciences in China (Series D), 49 (Supplement I): 1-202 2. QIN Boqiang, LIU Zhengwen, K. Havens. Eutrophication of Shallow Lakes with Special Reference to Lake Taihu, China. Hydrobiologia(Special issue eutrophication of shallow lakes with special reference of Lake Taihu), 2007, 581: 1-311.. 3. QIN Boqiang（主编）. Lake Taihu, China. 4. QIN Boqiang. Lake eutrophication: Control countermeasures and recycling exploitation. Ecological Engineering(Special issue of Lake Taihu eutrophication: control countermeasures and recycling exploitation), 2009, 35(11), 1569-1683.. 5. QIN Boqiang. Guest Editor: The Changing Environment of Lake Taihu and its Ecosystem Responses. Journal of Freshwater Ecology，2015.. 6. Jian Zhou, Boqiang Qin, C. 7. Tingfeng Wu, Boqiang Qin, Justin Brookes, Kun Shi, Guangwei Zhu, Mengyuan Zhu, Wenming Yan, ZhenWang. 2015. The influence of ...
Eutrophication - WikipediaEutrophication - Wikipedia
Eutrophication (Greek: eutrophia (from eu "well" + trephein "nourish".); German: Eutrophie), or more precisely hypertrophication, is the enrichment of a water body with nutrients, usually with an excess amount of nutrients. This process induces growth of plants and algae and due to the biomass load, may result in oxygen depletion of the water body. One example is the "bloom" or great increase of phytoplankton in a water body as a response to increased levels of nutrients. Eutrophication is almost always induced by the discharge of phosphate-containing detergents, fertilizers, or sewage, into an aquatic system. Eutrophication arises from the oversupply of nutrients, which leads to overgrowth of plants and algae. After such organisms die, the bacterial degradation of their biomass consumes the oxygen in the water, thereby creating the state of hypoxia. According to Ullmanns Encyclopedia, "the primary limiting factor for eutrophication is phosphate." The availability of phosphorus generally ...
Fifty years of eutrophication and lake restoration reflected in sedimentary carbon and nitrogen isotopes of a small, hardwater...Fifty years of eutrophication and lake restoration reflected in sedimentary carbon and nitrogen isotopes of a small, hardwater...
This study analyses the response of the carbon and nitrogen isotopic composition of sedimentary organic matter to rapid human-induced eutrophication and meromixis as well as subsequent restoration efforts [in-lake phosphorus (P)-Precipitation, P-remediation of the well inflow and multiannual destratification] in a 46-yr sediment core sequence (1963-2009) from Fischkaltersee, a small hard-water lake (S-Germany). In addition, the sediment record was compared with detailed data on water column chemistry during almost (1977-2009) the recorded history of eutrophication and trophic recovery of the named lake. While the onset of eutrophication resulted in an abrupt positive excursion (+2.4‰), the overall reaction of δ13CSOM to ongoing eutrophication and meromixis as well as to permanent hypolimnion aeration and trophic recovery is a continous negative trend (-3.7‰) with the most depleted signatures (-38.8‰) present in the youngest part of the core. This negative trend was not influenced by ...
Planning and Management of Lakes and Reservoirs: An Integrated Approach to EutrophicationPlanning and Management of Lakes and Reservoirs: An Integrated Approach to Eutrophication
CHAPTER 2. SOCIAL AND CULTURAL ASPECTS OF EUTROPHICATION. 2.4. Approaches to Solution of Eutrophication. The causes and consequences of eutrophication of lakes and water reservoirs are discussed in detail in Chapter 1 of this publication. Urbanization in developing countries is proceeding rapidly under severe population pressure. Treating human waste is the basis of urban sanitation, and the inability to do this starts the vicious circle of water problems and sanitation measures. Deterioration of lakes, reservoirs, and rivers near cities is particularly a serious environmental problem. Furthermore, modernization of agricultural practices brings about heavy use and run-off of nitrogen and phosphorus from chemical fertilizers, causing eutrophication of waters near the cities. Fundamental to a solution is the treatment and disposal of human wastes. Recovering urine and reusing it in agriculture is particularly important to solving the problem of the Earths limited water resources. An overall look ...
Coastal eutrophication status assessment using HEAT 1.0 (WFD methodology) versus HEAT 3.0 (MSFD methodology) and Development...Coastal eutrophication status assessment using HEAT 1.0 (WFD methodology) versus HEAT 3.0 (MSFD methodology) and Development...
Eutrophication status is assessed nationally in coastal waters within the Water Framework Directive (WFD) and in open sea areas within the Marine Strategy Framework Directive (MSFD). Both WFD and MSFD consider eutrophication but with different approaches and it is therefore a need for harmonisation in the assessment process. The Excel based tool HEAT (HELCOM Eutrophication Assessment Tool) has been used in previous assessments in the HELCOM region. There are two versions of the tool; HEAT 1.0 and HEAT 3.0, the first is based on the WFD methodology and the second is based on the MSFD methodology. The main difference between HEAT 1.0 and HEAT 3.0 is how the indicators are grouped. Here we assess the eutrophication status in coastal waters by applying HEAT and compare the results with the national WFD assessments. The present test includes data on 33 selected coastal water bodies in five countries: Estonia, Finland, Latvia, Poland and Sweden. Data on reference condition, acceptable deviation, ...
eutrophication facts, information, pictures | Encyclopedia.com articles about eutrophicationeutrophication facts, information, pictures | Encyclopedia.com articles about eutrophication
Get information, facts, and pictures about eutrophication at Encyclopedia.com. Make research projects and school reports about eutrophication easy with credible articles from our FREE, online encyclopedia and dictionary.
Effects of Eutrophication, Seasonality and Macrofouling on the Diversity of Bacterial Biofilms in Equatorial Coral Reefs - ePICEffects of Eutrophication, Seasonality and Macrofouling on the Diversity of Bacterial Biofilms in Equatorial Coral Reefs - ePIC
Biofilms play an important role as a settlement cue for invertebrate larvae and significantly contribute to the nutrient turnover in aquatic ecosystems. Nevertheless, little is known about how biofilm community structure generally responds to environmental changes. This study aimed to identify patterns of bacterial dynamics in coral reef biofilms in response to associated macrofouling community structure, microhabitat (exposed vs. sheltered), seasonality, and eutrophication. Settlement tiles were deployed at four reefs along a cross-shelf eutrophication gradient and were exchanged every 4 months over 20 months. The fouling community composition on the tiles was recorded and the bacterial community structure was assessed with the community fingerprinting technique Automated Ribosomal Intergenic Spacer Analysis (ARISA). Bacterial operational taxonomic unit (OTU) number was higher on exposed tiles, where the fouling community was homogenous and algae-dominated, than in sheltered habitats, which ...
Eutrophication (Excessive Fertilization) | SSWM - Find tools for sustainable sanitation and water management!Eutrophication (Excessive Fertilization) | SSWM - Find tools for sustainable sanitation and water management!
Eutrophication" has become synonymous with "excessive fertilisation" or the input of sufficient amounts of aquatic plant nutrients to cause the growth of excessive amounts of algae and/or aquatic macrophytes in a water body such that beneficial uses of the water body (i.e., water quality) are impaired. Beneficial uses of water bodies that stand to be impaired by the presence of excessive amounts of aquatic plant life include domestic and industrial water supply, recreation, and fisheries. Because of the public health and environmental quality significance of these water quality impairments, myriad strategies have been advanced to evaluate and regulate excessive fertilisation.. JONES LEE, A. LEE, G.F. (n.y): Eutrophication (Excessive Fertilization). El Macero: G. Fred Lee & Associates URL [Accessed: 24.01.2012] PDF ...
Eutrophication - WikipediaEutrophication - Wikipedia
Laws regulating the discharge and treatment of sewage have led to dramatic nutrient reductions to surrounding ecosystems,[23] but it is generally agreed that a policy regulating agricultural use of fertilizer and animal waste must be imposed. In Japan the amount of nitrogen produced by livestock is adequate to serve the fertilizer needs for the agriculture industry.[53] Thus, it is not unreasonable to command livestock owners to clean up animal waste-which when left stagnant will leach into ground water. Policy concerning the prevention and reduction of eutrophication can be broken down into four sectors: Technologies, public participation, economic instruments, and cooperation.[54] The term technology is used loosely, referring to a more widespread use of existing methods rather than an appropriation of new technologies. As mentioned before, nonpoint sources of pollution are the primary contributors to eutrophication, and their effects can be easily minimized through common agricultural ...
Final Year Project Details - Environmental Engineering (RK07) - School of Environmental EngineeringFinal Year Project Details - Environmental Engineering (RK07) - School of Environmental Engineering
Algal blooms formed due to excessive eutrophication can change the entire physico-chemical parameters of shrimp ponds. Eutrophication is defined as the enrichment of water by plant growth nutrients, usually phosphorus and nitrogen compounds, causing accelerated growth of algae and higher forms of plant life (Connell and Miller 1984; Harper 1992; Horne and Goldman 1994; Rast and Thornton 1996; Tett et al. 2008). The combination of a complex set of factors related to eutrophication and climate change has resulted in the rise in the frequency and geographic spread of phytoplankton blooms (Kouzminov et al. 2007; Adolf et al. 2009). Poor water quality can lead to algal blooms in shrimp ponds, which in turn lead to further deterioration of water quality in water body. Cyanobacterial blooms are in common, and associated cyanotoxins are noted from many inland water bodies. Blooms may affect irrigation system of paddy fields in different ways, such as depletion of dissolved oxygen (DO), with presence of ...
Eutrophication-Driven Shifts in Primary Producers in Shallow Coastal Systems: Implications for System Functional Change |...Eutrophication-Driven Shifts in Primary Producers in Shallow Coastal Systems: Implications for System Functional Change |...
Significant progress has been made recently towards a better understanding of the nature, causes, and consequences of anthropogenic eutrophication of shallow coastal systems. It is well established that, in pristine systems dominated by seagrasses, incipient to moderate eutrophication often leads to the replacement of seagrasses by phytoplankton and loose macroalgal mats as the dominant producers. However, less is known about the interactions between phytoplankton and loose macroalgae at intense eutrophication. Using a combination of original research and literature data, we provide support for the hypothesis that substantial macroalgal decline may occur at intense eutrophication due to severe water column shading. Our results suggest that such declines may be widespread. However, we also show that intense eutrophication is not always necessarily conducive to severe water column shading and large macroalgal declines, possibly due to short water residence time and/or elevated grazing on ...
Remote Sensing | Free Full-Text | Improved Accuracy of Chlorophyll-a Concentration Estimates from MODIS Imagery Using a Two...Remote Sensing | Free Full-Text | Improved Accuracy of Chlorophyll-a Concentration Estimates from MODIS Imagery Using a Two...
Sea eutrophication is a natural process of water enrichment caused by increased nutrient loading that severely affects coastal ecosystems by decreasing water quality. The degree of eutrophication can be assessed by chlorophyll-a concentration. This study aims to develop a remote sensing method suitable for estimating chlorophyll-a concentrations in tropical coastal waters with abundant phytoplankton using Moderate Resolution Imaging Spectroradiometer (MODIS)/Terra imagery and to improve the spatial resolution of MODIS/Terra-based estimation from 1 km to 100 m by geostatistics. A model based on the ratio of green and blue band reflectance (rGBr) is proposed considering the bio-optical property of chlorophyll-a. Tien Yen Bay in northern Vietnam, a typical phytoplankton-rich coastal area, was selected as a case study site. The superiority of rGBr over two existing representative models, based on the blue-green band ratio and the red-near infrared band ratio, was demonstrated by a high correlation of the
December, 2013 | Act Green BlogDecember, 2013 | Act Green Blog
Eutrophication or algal bloom is considered to be the most dangerous and unhealthy condition of a pond that is caused by certain human activities. Humans use a lot of fertilizers in the agricultural fields because of which the runoff from the fields contains excess of nitrates and phosphates. When this runoff reaches different ponds, it pollutes the waters of the ponds to such an extent that algae start growing continuously in large quantities because of which the ponds look absolutely ugly. This unsightly condition of the pond is known as Eutrophication.. The word "Eutrophication" has its origin from a Greek word and that word means "overfed". When Eutrophication occurs the pond ecosystem turns into a dead ecosystem. When algae start growing in the ponds, the oxygen supply to the aquatic plants and animals is reduced because of which they start dying. Slowly and slowly the aquatic plants and animals are replaced by more and more algae. Algae also produce harmful toxins that can cause severe ...
Landscape Europe - ArticlesLandscape Europe - Articles
By Raquel Luengo. Eutrophication is a complex process caused by the excess of nutrients in the water reservoirs and which consequences are enormous development of certain types of algae (as cyanobacteria) that deplete oxygen in the water and that lead to the absence of life in it, and their impact is particularly severe when they affect waters destined for urban supply. It is estimated that eutrophication affects more than 50 percent of Europes water resources and about 75% of cyanobacterial blooms are accompanied by toxin production. Toxins released by cyanobacteria induce damage in animals and humans by acting at the molecular level and consequently affecting cells, tissues and organs. Highlight nervous, digestive, respiratory and cutaneous systems affections highlight. Moreover eutrophication is related with pollution so it is an important and complex problem.. Read more.. ...
Shared Waters > Agricultural phosphorus and eutrophication...Shared Waters > Agricultural phosphorus and eutrophication...
Agricultural water protection takes shape in measures incentivized by society and undertaken by farmers to reduce the runoff and leaching loss of nutrients and pollutants to receiving waters. The question the WP2 answers is how to allocate resources between the measures to reach the maximum reduction in phosphorus (P) mediated eutrophication in surface waters.. The answers are sought in four section tasks. The first one addresses the trade-offs in mitigating the particulate and dissolved P loading. It is well known that most commonly used measures to cut down the loading of particulate P, such as permanent wintertime vegetative cover, tend to increase the lossing of dissolved P. We quantify how this process develops over time, driven by gradual vertical stratification of soil P. Based on the process we optimize the tilling frequency to strike a balance between the loading patterns of particulate P and dissolved P.. The second section task scrutinizes the long-term contribution of particulate P ...
Eutrophication | Cary Institute of Ecosystem StudiesEutrophication | Cary Institute of Ecosystem Studies
Students will know the difference between a pulse and a press event with regards to eutrophication and be able to graph the growth of algae over time.
Satellite-based monitoring of reservoir eutrophication in the Brazil Semi-arid region - PDFSatellite-based monitoring of reservoir eutrophication in the Brazil Semi-arid region - PDF
Anais XV Simpósio Brasileiro de Sensoriamento Remoto - SBSR, Curitiba, PR, Brasil, 30 de abril a 05 de maio de 2011, INPE p.5247 Satellite-based monitoring of reservoir eutrophication in the Brazil Semi-arid
eutrophication - Everything2.comeutrophication - Everything2.com
While Noungs description of the process of eutrophication is appropriate for estuary|estuarine and coastal zones, it is not strictly accurate for fresh...
SIGNAL: Significance of external / anthropogenic Nitrogen for central Baltic Sea N-CYCLINGSIGNAL: Significance of external / anthropogenic Nitrogen for central Baltic Sea N-CYCLING
The project SIGNAL addresses the crucial question of the eutrophication sources and what impact additional nitrogen has on the productivity in remote regions. The investigation will be carried out in the Baltic sea where the impact of eutrophication is one of the main threats to the ecosystem due to the 80 million people living in its watershed. The nitrogen input from the rivers, the atmosphere and N2 fixing cyanobacteria will be qualitatively and quantitatively assessed. This task will be accomplished through regular measurements in the mouths of several rivers, and in the precipitation. Stable isotope ratios of the most important elements are indicating eutrophication from various sources and have not been used simultaneously. However previous studies proved the utility of stable isotope ratios as indicators of external nitrogen inputs(.eg. fertilizer and soil runoff) and that they allow the identification of pathways through the ecosystem. Finally the role of the imported nitrogen for the ...
Spatial variation of water quality in upper catchment of Miyun Reservoir | Water Supply | IWA PublishingSpatial variation of water quality in upper catchment of Miyun Reservoir | Water Supply | IWA Publishing
Miyun Reservoir is the main surface source of drinking water for Beijing, China. Water eutrophication has compelled authorities to improve the water quality in
1 - Free Creative Writing Examples1 - Free Creative Writing Examples
1. There are many reasons human activities cause imbalance in biogeochemical cycling. Fish kills can be caused by eutrophication and an increased growth of algae. Algae causes a loss of available oxygen, called anoxia. Anoxia can kill fish and other aquatic organisms. Algae does produce oxygen but only when there is enough light. Eutrophication reduces the clarify of water so in eutrophic lakes, algae is starved of light. When algae do not have enough light, instead of producing oxygen, algae consume oxygen. 2. Opportunistic species exhibit aggressive growth. They have a short-life span, are small in size and they produce numerous offspring that they show little care to. They are typically found in unpredictable and variable environments and their population can survive anything that threatens it. Most insects are examples of an opportunistic species. Equilibrium species exhibit a strategic growth. They are opposite of opportunistic, meaning they are large with a long-life span. They have few ...
Phosphorus Along the Soil-Freshwater-Ocean Continuum | Frontiers Research TopicPhosphorus Along the Soil-Freshwater-Ocean Continuum | Frontiers Research Topic
Phosphorus (P) is essential for life but often in short supply in freshwater and marine ecosystems where its availability may control growth and thus biological productivity. Yet nonpoint source P transfer from land to water remains a contributor to eutrophication and algal blooms in many freshwater aquatic systems worldwide. Despite being a research priority for several decades, the cycling of P in aquatic systems is still poorly understood, although there have been promising advances in methodology in recent years. This Research Topic aims to bring together soil, freshwater and marine scientists with original research on P cycling in terrestrial, lacustrine, wetland and coastal and open ocean environments. We particularly welcome studies focusing on P movement from terrestrial to freshwater and marine environments with direct links to aquatic eutrophication, and on original approaches to better understand P speciation, bioavailability (inorganic and organic forms, different oxidation states) and
Identification of Hypoxia-Specific Biomarkers in Salmonids Using RNA-Sequencing and Validation Using High-Throughput qPCR | G3:...Identification of Hypoxia-Specific Biomarkers in Salmonids Using RNA-Sequencing and Validation Using High-Throughput qPCR | G3:...
Aquatic ecosystems are increasingly being affected by a complex mixture of anthropogenic stressors (Hering et al. 2015). In recent years, the prevalence and intensity of aquatic hypoxic episodes has increased worldwide, resulting in aquatic environments with large variations in dissolved oxygen (Leveelahti et al. 2011; Robertson et al. 2014). Both natural and anthropogenic drivers can be responsible for dissolved oxygen (DO) depletion in aquatic ecosystems. Natural hydrodynamic conditions, such as the oxidation of organic matter and the release of gases (e.g., methane or carbon dioxide), may make certain aquatic ecosystems prone to oxygen depletion. However, climate change can also reduce the solubility of oxygen because of increased thermal stratification and enhanced microbial activity, all of which would cause DO depletion (Weinke and Biddanda 2018). Moreover, agriculture, industry, and urbanization can lead to nutrient loading (i.e., eutrophication) and consequent persistent algal blooms in ...
Stream water nutrient enrichment in a mixed-use watershed - Journal of Environmental Monitoring (RSC Publishing)Stream water nutrient enrichment in a mixed-use watershed - Journal of Environmental Monitoring (RSC Publishing)
Eutrophic conditions, in both saline and freshwater systems, result from nutrient export from upstream watersheds. The objective of this study was to quantify the surface runoff losses of nitrate-nitrogen (NO3-N), total nitrogen (TN), dissolved reactive phosphorus (DRP), and total phosphorus (TP) resulting f
Difference between revisions of Eutrophication related monitoring tasks and WFD for coastal waters in Greece - MarineBiotech...Difference between revisions of "Eutrophication related monitoring tasks and WFD for coastal waters in Greece" - MarineBiotech...
Table 4: Checklist for a holistic assessment in coastal/transitional waters according to EC (2005). The qualitative assessment parameters are: a. The causative factors: The degree of nutrient enrichment: With regard to inorganic/organic nitrogen With regard to inorganic/organic phosphorus With regard to silicon Taking account of: Sources (differentiating between anthropogenic and natural sources) Increased/upward trends in concentration Elevated concentrations Changes in N/P, N/Si, P/Si ratios Fluxes and nutrient cycles (including across boundary fluxes, recycling within environmental compartments and riverine, direct and atmospheric inputs) b. The supporting environmental factors: Light availability (irradiance, turbidity, suspended load) Hydrodynamic conditions (stratification, flushing, retention time, upwelling, salinity gradients, deposition) Climatic/weather conditions Zooplankton grazing (which may be influenced by other anthropogenic activities) Coastal morphology Typology factors for ...
Growth rate, protein:RNA ratio and stoichiometric homeostasis of submerged macrophytes under eutrophication stress | Knowledge...Growth rate, protein:RNA ratio and stoichiometric homeostasis of submerged macrophytes under eutrophication stress | Knowledge...
Knowledge and management of aquatic ecosystems (formerly Bulletin Français de la Pèche et de la Pisciculture), an international journal on freshwater ecosystem
Heterogeneous preferences for water quality attributes: The Case of eutrophication in the Gulf of Finland, the Baltic Sea |...Heterogeneous preferences for water quality attributes: The Case of eutrophication in the Gulf of Finland, the Baltic Sea |...
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phosphorus | Data Nuggetsphosphorus | Data Nuggets
Scientists are worried because some salt marshes are in trouble! Runoff from rain washes nutrients, usually from lawn fertilizers and agriculture, from land and carries them to estuaries. When excess nutrients, such as nitrogen or phosphorus, enter an ecosystem the natural balance is disrupted. The ecosystem becomes more productive, called eutrophication. Eutrophication can cause major problems for estuaries and other habitats.. With more nutrients in the ecosystem, the growth of plants and algae explodes. During the day, algae photosynthesize and release O2 as a byproduct. However, excess nutrients cause these same algae grow densely near the surface of the water, decreasing the light available to plants growing below the water on the soil surface. Without light, the plants die and are broken down by decomposers. Decomposers, such as bacteria, use a lot of O2 because they respire as they break down plant material. Because there is so much dead plant material for decomposers, they use up most of ...
Lake Trophic States - RMBELLake Trophic States - RMBEL
Scientists like to classify lakes and give names to the different lake types so they can be easily referred to. Trophic states are based on lake
Herbivore and Nutrient Impact on Primary Producer Assemblages in a Tro by Elizabeth Lacey"Herbivore and Nutrient Impact on Primary Producer Assemblages in a Tro" by Elizabeth Lacey
Globally, human populations are increasing and coastal ecosystems are becoming increasingly impacted by anthropogenic stressors. As eutrophication and exploitation of coastal resources increases, primary producer response to these drivers becomes a key indicator of ecosystem stability. Despite the importance of monitoring primary producers such as seagrasses and macroalgae, detailed studies on the response of these benthic habitat components to drivers remain relatively sparse. Utilizing a multi-faceted examination of turtle-seagrass and sea urchin-macroalgae consumer and nutrient dynamics, I elucidate the impact of these drivers in Akumal, Quintana Roo, Mexico. In Yal Ku Lagoon, macroalgae bioindicators signified high nutrient availability, which is important for further studies, but did not consistently follow published trends reflecting decreased δ15N content with distance from suspected source. In Akumal Bay, eutrophication and grazing by turtles and fishes combine to structure patches within the
Lake Baikal Ecosystem Faces the Threat of EutrophicationLake Baikal Ecosystem Faces the Threat of Eutrophication
International Journal of Ecology is a peer-reviewed, Open Access journal that publishes original research as well as review articles in all areas of ecological sciences. Articles focusing on behavioral, environmental, evolutionary, and population ecology will be considered, as well new findings relating to biodiversity, conservation, and paleoecology. International Journal of Ecology encourages the submission of big data studies, either presenting novel findings from large datasets or demonstrating new analytical techniques.
BMAA and ALS: A Close Look at Eutrophication | Sciences In the Mural Of LifeBMAA and ALS: A Close Look at Eutrophication | Sciences In the Mural Of Life
The overall equation representing one of lifes ultimate achievements, photosynthesis, is the biggest oversimplification you will find in any basic science book on the planet. It shows water, carbon dioxide and sunlight as reactants and glucose and oxygen as products. It does not hint at the intricate cascade of events that have to transfer electrons from water to carriers…
Nitrogen, Phosphorus, and Eutrophication in the Coastal Marine Environment | ScienceNitrogen, Phosphorus, and Eutrophication in the Coastal Marine Environment | Science
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Nitrates, Phosphates and Eutrophication - CTValley BioNitrates, Phosphates and Eutrophication - CTValley Bio
Innovating Science™. Understand the importance and value of fresh water and the need to protect and conserve this valuable resource. Realize that a variety of factors, including …
Eutrophication Potential of Food Consumption PatternsEutrophication Potential of Food Consumption Patterns
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Detergents and P and eutrophication | Usa Online EssaysDetergents and P and eutrophication | Usa Online Essays
It is true there are many other companies offering custom online writing services. What makes USAonlineessays.com unique? With the saturation of the custom online writing arena, it is imperative that customers be enlightened to choose wisely as to where they want their essays written. There are many reasons why it is better to chose us over other companies in the same platform.. ...
DiVA - Search resultDiVA - Search result
In this study, empirical and semianalytical algorithms are developed and compared for optically complex waters to retrieve the diffuse attenuation coefficient of downwelling irradiance (Kd(lambda)) from satellite data. In the first approach, a band ratio algorithm was used. Various sets of MERIS band ratios were tested to achieve the best estimates for K-d(490) based on the in situ dataset which was measured in Nordic lakes (oligotrophic to eutrophic conditions). In the second approach, K-d(490) was expressed as a function of inherent optical properties which were retrieved from MERIS standard products. The algorithms from both approaches were tested against an independent data set and validated in optically complex coastal waters in the Baltic Sea and in Nordic lakes with high concentrations of coloured dissolved organic matter (0.3 , a(cdom)(442) m(-1) , 4.5), chlorophyll a (Chl a) (0.7, C-Chl a(mg m(-3)), 67.5) and total suspended matter (TSM) (0.5 , C-TSM(g m(-3)) , 26.4). MERIS-derived ...
Brown and Caldwell | Technical PapersBrown and Caldwell | Technical Papers
Summertime hypolimnetic anoxia is a common phenomenon in productive drinking water reservoirs. It can result in a number of negative environmental consequences. Anoxic sediment tends to release ammonia and orthophosphate, a phenomenon known as internal nutrient loading, which can reinforce eutrophication (Brostr m et al. 1988, Ahlgren et al. 1994). Entrainment of nutrients from the hypolimnion to the epilimnion can support summer blooms of blue-green algae which may produce objectionable and difficult-to-remove taste and odor compounds. Anoxic conditions can also lead to hypolimnetic accumulation of iron, manganese and sulfides that can degrade the aesthetic quality and treatability of drinking water (Sartoris and Boehmke 1987). Elevated concentrations of toxins (e.g., sulfide and ammonia (in the hypolimnion as a result of anoxia may impair aquatic biota within the reservoir and in tail-waters released from the hypolimnion (Cooper and Koch 1984, Horne 1989). Finally, anoxic conditions may also ...
Alerts and Notices | CRDAlerts and Notices | CRD
The Capital Regional District (CRD) advises, in consultation with Island Health, that there is a visible blue-green algae bloom at Thetis Lake, located in Thetis Lake Regional Park. Blue-green algae can produce cyanotoxins. Visitors are advised to avoid swimming in the lake and to keep animals on a leash to prevent them from drinking or swimming in the lake until the advisory has been lifted.. The algae usually produce a visible blue-green sheen, which appears as surface scum. Not all blooms are easy to see and toxins can still be present in the water even if you cannot see the blooms. Blooms are unpredictable and may occur at any time.. These algae are known toxin producers. Ingesting water containing these cyanotoxins may cause a range of symptoms, including headaches and abdominal pain in humans, and can lead to lethal liver damage in dogs.. Please visit www.crd.bc.ca/alerts and Twitter @crd_bc for updates on the status of this algae bloom. To learn more about blue-green algae visit these ...
Doris Day | Floribunda RoseDoris Day | Floribunda Rose
Inspired by big screen and singing legend, Americas Sweetheart Doris Day, this lovely yellow rose beautifully personifies this joyful, charming and amazingly talented icon. What makes this rose special is it originated from the same cross that produced the varieties Sparkle & Shine and Jump for Joy. These three rose sisters are different but they share the same super-floriferous attributes. Doris Days blooms are full of sunshine and will sweeten up your garden with their fruity and sweet spice aroma. The old-fashioned blooms are produced in beautiful rounded clusters on vigorous stems. You get to enjoy the gold yellow coloration until the petals drop.
Seasonal oxygen, nitrogen and phosphorus benthic cycling along an impacted Baltic Sea estuary: regulation and spatial patternsSeasonal oxygen, nitrogen and phosphorus benthic cycling along an impacted Baltic Sea estuary: regulation and spatial patterns
The ocean is the most extended biome present on our planet. Recent decades have seen a dramatic increase in the number and gravity of threats impacting the ocean, including discharge of pollutants, cultural eutrophication and spread of alien species. It is essential therefore to understand how different impacts may affect the marine realm, its life forms and biogeochemical cycles. The marine nitrogen cycle is of particular importance because nitrogen is the limiting factor in the ocean and a better understanding of its reaction mechanisms and regulation is indispensable. Furthermore, new nitrogen pathways have continuously been described. The scope of this project was to better constrain cause-effect mechanisms of microbially mediated nitrogen pathways, and how these can be affected by biotic and abiotic factors.. This thesis demonstrates that meiofauna, the most abundant animal group inhabiting the worlds seafloors, considerably alters nitrogen cycling by enhancing nitrogen loss from the ...
Restoration projects will help water quality, congressman saysRestoration projects will help water quality, congressman says
Rooney said he understands the problems, that two algal blooms are raging around the state and that more money is needed to fix the Everglades drainage system.
Untitled 1Untitled 1
Food web (bio-)manipulation of South African reservoirs - viable eutrophication management prospect or illusory pipe dream? A reflective commentary and position paper ...
pollutantspollutants
Overstimulates growth of algae (a process called eutrophication), which then decomposes, robbing water of oxygen, and harming aquatic life. High levels of nitrates in drinking water lead to illness in ...
Phosphate: A Critical Resource Misused and Now Running Low - Yale E360Phosphate: A Critical Resource Misused and Now Running Low - Yale E360
Phosphate has been essential to feeding the world since the Green Revolution, but its excessive use as a fertilizer has led to widespread pollution and eutrophication. Now, many of the worlds remaining reserves are starting to be depleted.
Library | Northeast Climate Science CenterLibrary | Northeast Climate Science Center
Coastal eutrophication as a driver of salt marsh loss, Deegan, Linda A., Johnson David Samuel, R. Warren Scott, Peterson Bruce J., Fleeger John W., Fagherazzi Sergio, and Wollheim Wilfred M. , Nature, 18-Oct-2012, Volume 490, Issue 7420, p.388 - 392, (2012) ...
Download Brand Essense: Using Sense, Symbol And Story To Design Brand IdentityDownload Brand Essense: Using Sense, Symbol And Story To Design Brand Identity
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It download Genetically that you are in USA. By Having our vault and text to our books system, you vary to our site of Faunistics in Eutrophication with the chores of this choice. 039; disciplines are more systems in the food chapter.
What is a bacterial bloom? | GreenAnswersWhat is a 'bacterial bloom'? | GreenAnswers
Bacterial blooms are caused by heterotrophic bacteria naturally present in aquariums which feed off the various wastes produced by the fish. These free floating aerobic bacteria can reproduce very rapidly, and an increase in available nutrients can trigger these blooms, usually described as a milky cloud in the aquarium. A build up of organic wastes, over feeding, or changing the gravel in the tank can all cause bacterial blooms. While the bacteria themselves are not dangerous, they can be a big drain on the oxygen content of the water.. ...
Subsurface phytoplankton blooms fuel pelagic production in the North Sea - DTU OrbitSubsurface phytoplankton blooms fuel pelagic production in the North Sea - DTU Orbit
The seasonal phytoplankton biomass distribution pattern in stratified temperate marine waters is traditionally depicted as consisting of spring and autumn blooms. The energy source supporting pelagic summer production is believed to be the spring bloom. However, the spring bloom disappears relatively quickly from the water column and a large proportion of the material sedimenting to the bottom following the spring bloom is often comprised of intact phytoplankton cells. Thus, it is easy to argue that the spring bloom is fueling the energy demands of the benthos, but more difficult to argue convincingly that energy fixed during the spring bloom is fueling the pelagic production occurring during summer months. We argue here that periodic phytoplankton blooms are occurring during the summer in the North Sea at depths of ,25 m and that the accumulated new production [sensu (Dugdale and Goering, Limnol. Oceanogr., 12, 196-206, 1967)] occurring in these blooms may be greater than that occurring in the ...
Download The Trophic Spectrum Revisited The Influence Of Trophic State On The Assembly Of Phytoplankton Communities Proceedings...Download The Trophic Spectrum Revisited The Influence Of Trophic State On The Assembly Of Phytoplankton Communities Proceedings...
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Eutrophication makes toxic cyanobacteria more toxic - academicsEutrophication makes toxic cyanobacteria more toxic - academics
Continued eutrophication of the Baltic Sea, combined with an ever thinner ozone layer, is favouring the toxic cyanobacterium Nodularia spumigena, reveals research from the University of Gothenburg, Sweden.
Eutrophication Processes in Coastal Systems: Origin and Succession of Plankton Blooms and Effects on Secondary Production in...Eutrophication Processes in Coastal Systems: Origin and Succession of Plankton Blooms and Effects on Secondary Production in...
Eutrophication Processes in Coastal Systems: Origin and Succession of Plankton Blooms and Effects on Secondary Production in Gulf Coast Estuaries - CRC Press Book
9781848730021: Oceans and Climate, Water Quality, Eutrophication, Acid Rain - IberLibro - Mark Brandon; C. Chapman; J. Treweek;...9781848730021: Oceans and Climate, Water Quality, Eutrophication, Acid Rain - IberLibro - Mark Brandon; C. Chapman; J. Treweek;...
Oceans and Climate, Water Quality, Eutrophication, Acid Rain de Mark Brandon; C. Chapman; J. Treweek; D. Gowing; J. Cosby; T. Allott; N. Dise; L. Smart en Iberlibro.com - ISBN 10: 1848730020 - ISBN 13: 9781848730021 - The Open University - 2009 - Tapa blanda
Factors affecting farmers willingness to participate in eutrophication mitigation : a case study of preferences for wetland...Factors affecting farmers' willingness to participate in eutrophication mitigation : a case study of preferences for wetland...
Water governance worldwide is going through a shift towards more holistic and participatory approaches. In Europe, the EU Water Framework Directive (WFD) adopted in 2000, aims at protecting surface water and groundwater. The WFD emphasizes the importance of stakeholder participation in planning and implementation of the directive, and in order to reach environmental objectives. However, the empirical findings are insufficient regarding how stakeholder participation can lead to improved decisions and implemented plans. In Sweden, a major water quality problem is eutrophication caused to a large extend by diffuse nutrient leakage from agriculture. Therefore, it is important to involve farmers in water management, since their participation can lead the commitment of mitigation measures for reduced nutrient leakage. The overall aim of this study is to contribute the knowledge and understanding of active stakeholder participation in water management, in particular how it can lead to implementation of ...
Interaction of Climate Change and Eutrophication - NERC Open Research ArchiveInteraction of Climate Change and Eutrophication - NERC Open Research Archive
Jeppesen, Erik; Moss, Brian; Bennion, Helen; Carvalho, Laurence; DeMeester, Luc; Feuchtmayr, Heidrun; Friberg, Nikolai; Gessner, Mark O.; Hefting, Mariet; Lauridsen, Torben L.; Liboriussen, Lone; Malmquist, Hilmar; May, Linda; Meerhoff, Mariana; Olafsson, Jon S.; Soons, Merel B.; Verhoeven, Jos T.A.. 2010 Interaction of Climate Change and Eutrophication. In: Kernan, Martin; Battarbee, Richard W.; Moss, Brian, (eds.) Climate Change Impacts on Freshwater Ecosystems. Wiley-Blackwell, 119-151. Full text not available from this repository ...
The effects of eutrophication and acidification on the ecophysiology of Ulva pertusa Kjellman | Ocean acidificationThe effects of eutrophication and acidification on the ecophysiology of Ulva pertusa Kjellman | Ocean acidification
In coastal environments, acidification and eutrophication affect the physiology of marine macroalgae. We investigated the responses of Ulva pertusa Kjellman (Ulvales, Chlorophyta) under such conditions. Samples were cultured at two different pH settings (low, 7.5; high, 8.0) and at three different ammonium levels (low, 4; medium, 60; high, 120 μM NH4+). Our objective was to analyze…
Home - Harmful algal blooms and GISHome - Harmful algal blooms and GIS
The authors are concerned with the recent harmful algal blooms in the Northwest Pacific region. The current in situ and satellite chlorophyll and sea surface temperature estimates are questioned as to their validity, particularly under cloudy conditions. Therefore, the authors combined the RCA-Chl algorithm (from SeaWiFS), sea surface temperature, sea surface height/geostrophic currents, and wind, in conjugation with in-situ observation data, to show the spatial and temporal relationships between 1998-2006 summer algal blooms and the mechanisms underlying their development. The study was divided into 5 different segments: the SCS-Taiwan segment, Taiwan-ECS segment, YS-BS segment, KS-JS-RS (Korean Sea-Japan Sea-Russian Sea) segment, and RS-North Korean segment. Four common hydrodynamically active regions (coastal cold/estuary water zones, upwelling zones next to the coast, repeated meanders/eddies, and frontal regimes induced by the Kuroshio Current) were identified in each segment. These regions ...
Nutrient loading of surface waters in the Upper Klamath Basin | Open LibraryNutrient loading of surface waters in the Upper Klamath Basin | Open Library
Nutrient loading of surface waters in the Upper Klamath Basin by K. A. Rykbost; 1 edition; First published in 2001; Subjects: Nutrient pollution of water, Water, Eutrophication, Agricultural pollution, Pollution; Places: Upper Klamath Lake Watershed, Oregon, Upper Klamath Lake Watershed (Or.)
Population dynamics of harmful algal blooms in Lake Champlain: A tale of two phases [PeerJ Preprints]Population dynamics of harmful algal blooms in Lake Champlain: A tale of two phases [PeerJ Preprints]
Understanding the dynamics of harmful algal blooms (HABs) in lakes can inform management strategies to reduce their economic and health impacts. Previous studies have analyzed spatially replicated samples from a single time or have fit phenomenological models to time series data. We fit mechanistic population models to test the effects of critical nutrient concentrations and the density of potential algal competitors on population growth parameters in HABs in Lake Champlain, U.S.A. We fit models to five years (2003-2006, 2008) of weekly cyanobacteria counts. Plankton dynamics exhibited two phases of population growth: an initial
细菌群落组成对微囊藻水华分解过程的响应-The response of bacterial community composition to the decomposition of Microcystis blooms细菌群落组成对微囊藻水华分解过程的响应-The response of bacterial community composition to the decomposition of Microcystis blooms
为探究细菌群落组成对微囊藻水华腐败分解过程的响应,在太湖梅梁湾沿岸进行为期11d的原位围隔实验,模拟蓝藻水华聚集分解过程,并监测了此过程中水体环境因子和细菌群落组成.结果表明,水体理化因子和细菌群落组成在微囊藻水华分解的过程中发生了显著变化.冗余分析显示细菌的群落组成与水体氧化还原环境(溶解氧或氧化还原电位)、pH值、浮游植物生物量和营养盐浓度(总磷、硝态氮浓度)密切相关.研究还发现了某些与微囊藻水华分解密切相关的特殊细菌类群,其中隶属于黄杆菌科(拟杆菌门)的一个类群在微囊藻厌氧分解的阶段占据显著优势,其功能有待于进一步研究.;To explore the response of bacterial community composition (BCC) to the decomposition of Microcystis blooms, we conducted an eleven-day in situ enclosure experiment to simulate the aggregation and decomposition of cyanobacterial bloom near the shoreline of
Recovery of Lake Varese: reducing trophic status through internal...: Ingenta ConnectRecovery of Lake Varese: reducing trophic status through internal...: Ingenta Connect
Lake Varese is one of the first and most evident examples of cultural eutrophication in southern Europe (Northern Italy). Although internal actions (hypolimnetic water withdrawal and injection of pure oxygen) were implemented following the construction of a sewage collection system in 1986, the complete reversal of the lakes eutrophic condition has not yet been achieved. Since the internal P load in Lake Varese, estimated to be 5.6 t yr-1, is a determining factor in the continuation of the eutrophic status of the lake, in this study an application of a lanthanum-modified bentonite clay, able to bind phosphorus, was carried out in controlled enclosures for 12 months during 2009-2010. The results showed a sharp reduction (more than 80 %) of the P concentrations along the water column after the lanthanum-modified bentonite clay application and, from January onwards, the settled clay controlled the P release from the sediments, preventing a sharp increase in total P concentrations to values ...
Small phytoplankton dominate western North Atlantic biomass by Luis M. Bolanos, Lee Karp-Boss et al."Small phytoplankton dominate western North Atlantic biomass" by Luis M. Bolanos, Lee Karp-Boss et al.
The North Atlantic phytoplankton spring bloom is the pinnacle in an annual cycle that is driven by physical, chemical, and biological seasonality. Despite its important contributions to the global carbon cycle, transitions in plankton community composition between the winter and spring have been scarcely examined in the North Atlantic. Phytoplankton composition in early winter was compared with latitudinal transects that captured the subsequent spring bloom climax. Amplicon sequence variants (ASVs), imaging flow cytometry, and flow-cytometry provided a synoptic view of phytoplankton diversity. Phytoplankton communities were not uniform across the sites studied, but rather mapped with apparent fidelity onto subpolar- and subtropical-influenced water masses of the North Atlantic. At most stations, cells | 20-µm diameter were the main contributors to phytoplankton biomass. Winter phytoplankton communities were dominated by cyanobacteria and pico-phytoeukaryotes. These transitioned to more diverse and
Harmful Algal Bloom in the Gulf of Mexico | Plankton PortalHarmful Algal Bloom in the Gulf of Mexico | Plankton Portal
For many of us living on the southern (Gulf) coast of the USA, it has become common to see numerous dead fishes floating in the bays and scattered across our beaches. Why is this happening? You may have heard on the news that there is a large harmful algal bloom (HAB) that began off the western…
MarLIN - The Marine Life Information Network - A red seaweed (Furcellaria lumbricalis)MarLIN - The Marine Life Information Network - A red seaweed (Furcellaria lumbricalis)
Bird et al. (1991) commented that productivity by Furcellaria lumbricalis was low, uptake of nutrients was slow and the species was not nutrient limited under normal conditions. This suggests that the species would not be greatly affected by an increase in nutrient concentration. However, eutrophication may have other knock-on effects. Johansson et al. (1998) suggested that one of the symptoms of large scale eutrophication is the deterioration of benthic algal vegetation in areas not directly affected by land-runoff or a point source of nutrient discharge. Altered depth distributions of algal species caused by decreased light penetration and/or increased sedimentation through higher pelagic production have been reported in the Baltic Sea (Kautsky et al., 1986; Vogt & Schramm, 1991). Johansson et al. (1998) studied changes in the benthic algal community of the Skagerrak coast in the Baltic Sea, an area heavily affected by eutrophication, between 1960 and 1997. They noted the disappearance of the ...
Publication : USDA ARSPublication : USDA ARS
Interpretive Summary: Lake eutrophication is a serious environmental concern in China, especially in lakes from middle and lower reaches of Yangtze River watershed and the Southwest China Plateau. Increased information on forms and lability of phosphorus (P) in aquatic macrophytes and algae is crucial for better understanding of P biogeochemical cycling in eutrophic lakes. This work was a continuation of the efforts in increased understanding of the P forms and lability in aquatic macrophytes and algae. This study took aquatic macrophytes and algae samples for an indepth research by solution 31P NMR spectroscopy and enzymatic hydrolysis. Furthermore, we rigorously examined the accuracy of the two methods by comparison of the solution 31P NMR spectral changes of the NaOH-EDTA extracts of the six samples before and after enzymatic hydrolysis treatments. Based on these quantity and lability data, we proposed that biogeochemical cycling of Po in aquatic vegetative biomass residues is an important ...
Difference between revisions of Microbe Mission - Science Olympiad Student Center WikiDifference between revisions of "Microbe Mission" - Science Olympiad Student Center Wiki
The most common example of a microbial population explosion is an algal bloom/red tide, an an aggregation of red dinoflagellates in an aquatic ecosystem. Fertilizer-rich runoff, often from a farm, is the typical cause for an algal bloom.The abundance of nutrients in the fertilizer becomes a part of the runoff and enters a nearby body of water along with it. This eutrophication fuels algal growth, allowing dinoflagellates to reproduce rapidly. As a result, certain algae can produce potentially lethal toxins that are harmful to animals. Algal blooms are also expensive to treat, greatly impacting water treatment plants. Perhaps the most devastating consequence of all is ocean dead zones. Given a massive population of algae, many will eventually die due to lack of space, buildup of toxins, etc. Marine decomposers (i.e. bacteria) break down the organic material of the dead dinoflagellates, which requires oxygen. Oxygen in surrounding waters is depleted, causing hypoxia and eventually anoxia (the ...
Stephen R. Carpenter - WikipediaStephen R. Carpenter - Wikipedia
Stephen Russell Carpenter is an American lake ecologist who focuses on lake Eutrophication which is the over-enrichment of lake ecosystems leading to toxic blooms of micro-organisms and fish kills. Stephen Carpenter was born July 5, 1952, in Kansas City, Missouri, United States. His father, Richard, a chemist, became the Director of the National Academies Board on Environmental Studies and Toxicology, so Carpenter was immersed in science at a young age. In his youth, Carpenter spent his summers on his grandfathers farm in Missouri. During this time he and his relatives enjoyed fishing, hunting and camping. "Hiking, camping, fishing, and hunting all come together in ecology," he says. "I was really excited when I discovered there was a way to get paid for being a scientist outdoors." His interest in ecology was sparked during his undergraduate program at Amherst College, Massachusetts. After his sophomore year, Carpenter worked for the summer on a survey of tree cover in Glacier National Park. ...
BASE - HELCOMBASE - HELCOM
HELCOM BASE (2012-2014) is a project funded by the EU with a budget of 2,5 M€. BASE supports the implementation of the Baltic Sea Action Plan (BSAP) in Russia. It is managed by the HELCOM Secretariat and St. Petersburg Public Organization Ecology and Business.. BASE is utilizing the experience and results of the activities by the BALTHAZAR Project (Phases I and II). BASE takes the cooperation achieved within BALHAZAR further and addresses altogether three priority areas of the HELCOM BSAP: eutrophication, hazardous substances, and biodiversity and nature protection. Within BASE, monitoring activities to support and measure the implementation progress within the abovementioned segments are also being carried out.. The pilot projects (components) are implemented by experts from Russia with the support of EU experts.. ...
Geochemical and geophysical examination of submarine groundwater discharge and associated nutrient loading estimates into Lynch...Geochemical and geophysical examination of submarine groundwater discharge and associated nutrient loading estimates into Lynch...
Geochemical tracer data (i.e., 222Rn and four naturally occurring Ra isotopes), electromagnetic (EM) seepage meter results, and high-resolution, stationary electrical resistivity images were used to examine the bi-directional (i.e., submarine groundwater discharge and recharge) exchange of a coastal aquifer with seawater. Our study site for these experiments was Lynch Cove, the terminus of Hood Canal, WA, where fjord-like conditions dramatically limit water column circulation that can lead to recurring summer-time hypoxic events. In such a system a precise nutrient budget may be particularly sensitive to groundwater-derived nutrient loading. Shore-perpendicular time-series subsurface resistivity profiles show clear, decimeter-scale tidal modulation of the coastal aquifer in response to large, regional hydraulic gradients, hydrologically transmissive glacial terrain, and large (4-5 m) tidal amplitudes. A 5-day 222Rn time-series shows a strong inverse covariance between 222Rn activities (0.5−29 dpm L-1)
Most recent papers with the keyword UAV | Read by QxMDMost recent papers with the keyword UAV | Read by QxMD
A pilot experimental field combining rewetting of reclaimed peaty soils and water phyto-treatment was set up in the Massaciuccoli Lake basin (Tuscany, Italy) to reduce the water eutrophication and peat degradation caused by almost a century of drainage-based agricultural use. In this paper, we investigated the restoration process occurring consequently to the conversion of a drained area in a natural wetland system (NWS) (the partial top soil removal, the realization of a perimeter levee to contain the waters, the rewetting with the drainage waters coming from the of surrounding cultivated areas) and the capability of the spontaneous vegetation to catch nutrients acting as a vegetation filter ...
The Swedish Tax on Nitrogen Oxide Emissions | OECD READ editionThe Swedish Tax on Nitrogen Oxide Emissions | OECD READ edition
Sweden was facing a serious soil acidification and water eutrophication problem caused partly by emissions of nitrogen oxides (NOx) from combustion pr
Harmful Algal Blooms (HAB) | Pure Water PartnersHarmful Algal Blooms (HAB) | Pure Water Partners
The Eugene Water & Electric Board is interested in tracking algal blooms in the watershed to assess the presence of potentially harmful cyanobacteria species that may produce toxins.
Lake and Reservoir Fate and Transport of Chemicals | Springer for Research & DevelopmentLake and Reservoir Fate and Transport of Chemicals | Springer for Research & Development
Eutrophication" is originally used to describe aging process whereby a lake is transformed from a lake to a marsh to a meadow (fill the lake with sediments). "Cultural eutrophication" occurs when the lake aging process is quickened or accelerated by excess nutrients from human activities [1]. Understanding of the fate and transport of water quality constituents in lakes and reservoirs is essential to sustaining water quality and fish habitat in these inland waters. Constituent is used generically and does not necessarily mean a polluting substance, e.g., dissolved oxygen (DO) is a relatively benign variable. The fate of a constitute typically depends on its transport (movement) through an inland water system (lake or reservoir) and on sources, sinks, chemical and biological reactions, and other decay mechanisms (e.g., settling). When sediment input is more than sediment outflow or nutrients are more than demands of aquatic plants, a lake or reservoir becomes not sustainable and the aging process ...
2017 ESA Annual Meeting (August 6 -- 11)2017 ESA Annual Meeting (August 6 -- 11)
Background/Question/Methods. Humans have artificially enhanced the productivity of terrestrial and aquatic ecosystems on a global scale by increasing nutrient loading. While the consequences of eutrophication are well-known, most studies tend to examine short-term responses relative to the time scales of heritable adaptive change. Thus, the potential role of adaptation by organisms in stabilizing the response of ecological systems to such perturbations is largely unknown. We tested the hypothesis that adaptation by a generalist consumer (Daphnia pulicaria) to toxic prey (cyanobacteria) mediates the response of lake ecosystems to nutrient enrichment. Using a manipulative field experiment in limnocorrals, we examined the interactive effects of nutrient enrichment and consumer genotype (sensitive vs. tolerant to toxic prey) on algal abundance and species composition. We then tested theoretical predictions of how the magnitude of consumer effects should vary with productivity by conducting ...
Common Water Quality Measures - Idaho Department of Environmental QualityCommon Water Quality Measures - Idaho Department of Environmental Quality
Nutrients in water include various forms of the chemical elements nitrogen and phosphorus-the same materials we apply as fertilizer to our lawns, gardens, and crops to foster plant growth. They have the same effect in water as they do on land, encouraging the growth of aquatic plants such as algae (floating or attached to rocks) and rooted macrophytes (e.g., water lilies).. Without nutrients, water would be sterile and not support aquatic life. Adding nutrients can be acceptable, even beneficial at times, as they increase the productivity of a water body. However, the process of nutrient enrichment in aquatic systems, such that the productivity of the system is no longer limited by the availability of nutrients is called eutrophication. This is a natural process but may be accelerated by human activities. If too many nutrients enter our waters due to human uses, the growth of aquatic plants becomes excessive. This process is known as cultural eutrophication.. Excessive plant growth can change ...
Common Water Quality Measures - Idaho Department of Environmental QualityCommon Water Quality Measures - Idaho Department of Environmental Quality
Nutrients in water include various forms of the chemical elements nitrogen and phosphorus-the same materials we apply as fertilizer to our lawns, gardens, and crops to foster plant growth. They have the same effect in water as they do on land, encouraging the growth of aquatic plants such as algae (floating or attached to rocks) and rooted macrophytes (e.g., water lilies).. Without nutrients, water would be sterile and not support aquatic life. Adding nutrients can be acceptable, even beneficial at times, as they increase the productivity of a water body. However, the process of nutrient enrichment in aquatic systems, such that the productivity of the system is no longer limited by the availability of nutrients is called eutrophication. This is a natural process but may be accelerated by human activities. If too many nutrients enter our waters due to human uses, the growth of aquatic plants becomes excessive. This process is known as cultural eutrophication.. Excessive plant growth can change ...
ChinaAid: Christian committee of Three-Self Patriotic Movement evicts Jiaozhou Bay Christian Church in Shandong ProvinceChinaAid: Christian committee of Three-Self Patriotic Movement evicts Jiaozhou Bay Christian Church in Shandong Province
ChinaAid is an international non-profit Christian human rights organization committed to promoting religious freedom and rule of law in China. We believe that religious freedom is the first freedom, which lays the foundation for all other basic human rights.
Wits End: December 2012Wit's End: December 2012
The impact of nitrogen on surface waters is also critical. Nitrogen plays a significant role in episodic acidification and new research recognizes the importance of nitrogen in long-term chronic acidification as well. Furthermore, the adverse impact of atmospheric nitrogen deposition on estuaries and near-coastal water bodies is significant. Scientists estimate that 10 to 45 percent of the nitrogen produced by various human activities that reaches estuaries and coastal ecosystems is transported and deposited via the atmosphere. For example, about 30 percent of the nitrogen in the Chesapeake Bay comes from atmospheric deposition. Nitrogen is an important factor in causing eutrophication (oxygen depletion) of water bodies. The symptoms of eutrophication include blooms of algae (both toxic and non-toxic), declines in the health of fish and shellfish, loss of seagrass beds and coral reefs, and ecological changes in food webs. According to the National Oceanic and Atmospheric Administration (NOAA), ...
Phosphorus in the sediment of L. Hällerstadsjön: spatial distribution, fractions and release to the water volumePhosphorus in the sediment of L. Hällerstadsjön: spatial distribution, fractions and release to the water volume
In freshwater systems phosphorus (P) is the limiting element in the cause of eutrophication. In many Swedish lakes, causes of eutrophication have been attributed to more of internal loading than external since the external loading has been fairly well managed. Internal loading is linked to the mobility of sediment P, which are known to be Bioavailable P (BAP). Sediments from Lake Hällerstadsjön in Sweden was studied to know the BAP concentration and its possible release into the water column under reduced conditions. Sediments were sampled at two different depths, 0-5 cm and 5-10cm. BAP was determined by a phosphorus fractionation scheme. Sediments were incubated under oxic and anoxic conditions in the laboratory to evaluate sediment P release. Spatial variation in the distribution of P forms across the lake was also studied, in order to examine possible local patterns, particularly along a transect from the main inlet to the outlet. Fractionation analyses showed a trend of; Residual-P , ...
eutrophicationeutrophication
Inhibitory analysis in ecology.. This is about a discovery and innovation in environmental sciences and ecology, item 3 on the list of 18 (the list see here [3]). This new approach in ecology allows to see better the real role of organisms of a higher trophic level in regulation of the organisms of a lower trophic level.. The method that was applied was to inhibit the functional activity of the organisms of a higher trophic level and to observe the consequences: what happens with the organisms of a LOWER trophic level.. It was done by the inventor of this methodology in the laboratory experimental systems with bivalve mollusks that that a higher trophic level organisms as compared to phytoplankton algae. The algae are a lower trophic level organisms as compared to bivalve mollusks. The bivalves feed on algae.. In my experiments, I decreased trophic activity of bivalves using special chemical inhibitors. I used my previous discovery that some chemical - surfactants - can decrease filtering ...
Stratigraphic, Microfossil, and Geochemical Analysis of the Neoprotero by Dawn Schmidli Hayes"Stratigraphic, Microfossil, and Geochemical Analysis of the Neoprotero" by Dawn Schmidli Hayes
Several previous Neoproterozoic microfossil diversity studies yield evidence for arelatively sudden biotic change prior to the first well‐constrained Sturtian glaciations. In an event interpreted as a mass extinction of eukaryotic phytoplankton followed by bacterial dominance, diverse assemblages of complex acritarchs are replaced by more uniform assemblages consisting of simple leiosphaerid acritarchs and bacteria. Recent data from the Chuar Group of the Grand Canyon (770‐742 Ma) suggest this biotic change was caused by eutrophication rather than the direct effects of Sturtian glaciation; evidence includes total organic carbon increases indicative of increasing primary productivity followed by iron speciation values that suggest sustained water column anoxia. A new data set (this study) suggests that this same eutrophication event may be recorded in shale units of the formation of Hades Pass and the Red Pine Shale of Utahs Neoproterozoic Uinta Mountain Group (770‐742 Ma). Results of this study
ash | Kretsloppsteknikash | Kretsloppsteknik
For further information, get in touch with Jenna Senecal at the Department of Energy and Technology, P.O. Box 7032, SE-750 07 Uppsala, Sweden. E-mail: [email protected] Abstract: Over four billion people are discharging untreated human excreta into the environment without any prior treatment, causing eutrophication and spreading disease. This eutrophication is caused by nutrients found predominantly in urine. If managed adequately, urine can be used as a fertiliser because it contains the same plant nutrients as the fertilisers used to produce the food that people eat. Currently to replace the nutrients removed from fields during harvesting, more fertilisers are being manufactured and applied and ultimately more are being leached into the environment.. The use of human urine as a fertiliser is limited by its low nutrient concentration compared with commercial fertilisers. This study sought to increase the nitrogen (N) concentration (from 0.6 % to ,6 %) through dehydration to produce a dry ...
Urine-diversionUrine-diversion
For further information, get in touch with Jenna Senecal at the Department of Energy and Technology, P.O. Box 7032, SE-750 07 Uppsala, Sweden. E-mail: [email protected] Abstract: Over four billion people are discharging untreated human excreta into the environment without any prior treatment, causing eutrophication and spreading disease. This eutrophication is caused by nutrients found predominantly in urine. If managed adequately, urine can be used as a fertiliser because it contains the same plant nutrients as the fertilisers used to produce the food that people eat. Currently to replace the nutrients removed from fields during harvesting, more fertilisers are being manufactured and applied and ultimately more are being leached into the environment.. The use of human urine as a fertiliser is limited by its low nutrient concentration compared with commercial fertilisers. This study sought to increase the nitrogen (N) concentration (from 0.6 % to ,6 %) through dehydration to produce a dry ...
In situ monitoring of eutrophication - Coastal WikiIn situ monitoring of eutrophication - Coastal Wiki
Turbidity is a measure of water clarity or transparency caused by suspended particles from organic (algae, plankton) or inorganic (fine silts or clays) origin. The more turbid the water the less light is transmitted. A common simple and cheap device for manually measuring ocean turbidity is the Secchi disk which consists of a circular disk (20-30 cm in diameter). The disc is being lowered into the water and the depth at which the disc is no longer visible, is a measure of the clarity of the water and is known as the Secchi depth and is related to water turbidity. The Secchi disk readings do not provide an exact measure of transparency (for example: interpretation of different observers) and are often replaced by the use of turbidity sensors. Turbidity sensors designed for extended in situ measurements are based on nephelometric or optical-backscatter principles where the scattering and absorbing effects of the suspended particles on light are measured [6]. Nephelometers measure the concentration ...
Two mathematical approaches to study the phosphorus eutrophication of a wetland in Puerto RicoTwo mathematical approaches to study the phosphorus eutrophication of a wetland in Puerto Rico
El repositorio institucional Redicuc de la universidad de la costa, permite la preservación de los documentos digitales y contribuye a facilitar el acceso a los resultados de la producción investigativa con el fin de aumentar la visibilidad institucional.
Eutrophication -B7 OCR - Mindmap in GCSE BiologyEutrophication -B7 OCR - Mindmap in GCSE Biology
Copyright Get Revising 2017 all rights reserved. Get Revising is one of the trading names of The Student Room Group Ltd. Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered office: International House, Queens Road, Brighton, BN1 3XE ...
Supplementary Hattich et al. from Inter- and intraspecific phenotypic plasticity of three phytoplankton species in response to...Supplementary Hattich et al. from Inter- and intraspecific phenotypic plasticity of three phytoplankton species in response to...
Supplementary Hattich et al. from Inter- and intraspecific phenotypic plasticity of three phytoplankton species in response to ocean acidification
Remote sensing of toxic algal bloomsRemote sensing of toxic algal blooms
Harmful algal blooms in the Red Sea could be detected from satellite images using a method developed at KAUST. This remote sensing technique may eventually lead to a real-time monitoring system to help maintain the vital ...
PPT - RED TIDES: Causes, Consequences and Control of Algal Blooms PowerPoint Presentation - ID:151784PPT - RED TIDES: Causes, Consequences and Control of Algal Blooms PowerPoint Presentation - ID:151784
Marie Manandise and Tom Sumner. CoMPLEX, University College London, 4 Stephenson Way, London, NW1 2HE. a. b. RED TIDES: Causes, Consequences and Control of Algal Blooms. Slideshow 151784 by Jimmy
Biology-OnlineBiology-Online
Theory predicts that lysogeny becomes the preferred strategy when the cell density falls below the lower limit necessary for maintenance of the phage density by repeated cycles of lytic infections. The argument is that the production of temperate phages is independent of host cell density. Indeed, two marine surveys revealed 40% mitomycin C-inducible cells, and similar proportions of lysogens were identified in Pseudomonas colonies from lakes. In contrast, UV or sunlight was not a good inducer of prophages in water samples. The surveys showed a trend for lysogeny to be more prevalent in oligotrophic environments (35). This observation fits with theory, since this setting is dominated by the low density of slow-growing bacteria. Other data contradict this interpretation. Surveys in estuarine waters showed a seasonal development of lysogeny with highs in the summer months when eutrophic conditions were prevalent and lows in the winter months when cells were at their minimum (20, 44). There are ...
MOKAU/AWAKINO WATER SUPPLY PRECAUTIONARY BOIL WATER NOTICE LIFTED - Waitomo District CouncilMOKAU/AWAKINO WATER SUPPLY PRECAUTIONARY BOIL WATER NOTICE LIFTED - Waitomo District Council
December. In early December Waitomo District Council noted an algae bloom in the lower dam which feeds the Mokau/Awakino supply. Algae blooms are not abnormal at this time of year around New Zealand; they are naturally occurring and most are harmless. Algae blooms are caused by a combination of warm temperatures feeding nutrients etc in the water. Algae blooms can happen quite quickly, making the water look cloudy and dirty. When the bloom was identified in early December, WDC isolated the lower dam, and drew water from the upper dam instead (which was unaffected). However, some of the water from the lower dam had already moved into the treatment plant and reservoirs on site. In response, WDC began flushing the water through the treatment plant, reservoirs and reticulation to get rid of the cloudy water. This flushing process takes time so, with the support of the Waikato District Health Board, we issued a precautionary boil water notice for Mokau and Awakino on December 9th. While the water ...
Boston Courses : Intercampus Marine Science Graduate ProgramBoston Courses : Intercampus Marine Science Graduate Program
BIOL 606. This course investigates freshwater ecosystems from a physical, chemical, biological, and ecological prospective. In lecture students will be exposed to concepts and environmental applications of freshwaters such as properties of water, movement of light, heat, and chemicals, physiography of flowing and non-flowing freshwater, redox and oxygen, hydrologic, carbon, iron, nitrogen, phosphorus, and sulfur cycling, biodiversity, behavior, predation, competition, food webs, nutrient use and mineralization, disturbance, succession, production, and trophic state and eutrophication. In the laboratory students will learn techniques to collect, analyze, interpret, and report on physical chemical, biological, and ecological parameters of freshwater ecosystems. Some laboratory exercises will require outside of the classroom activities such as collecting ore measuring parameters in local streams, lakes, and ponds.. This course is an elective.. 4 credits. Option Areas: ...
Lake Erie provides drinking water for more people than any other, but algae blooms are making it toxicLake Erie provides drinking water for more people than any other, but algae blooms are making it toxic
Every year, an explosion of microscopic life reigns over western Lake Erie, forming a green slick of algae and bacteria so massive and vibrant that it can be seen from space.
Implications of phytoplankton cell death losses forcarbon flux in Oceanic food-websImplications of phytoplankton cell death losses forcarbon flux in Oceanic food-webs
Important phytoplankton losses by cell death, independent of grazing are occurring in the ocean. Phytoplankton cells have been described to die upon encountering adverse environmental conditions, and cell death and lysis would result in the release of the carbon incorporated in the photosynthesis by the phytoplankton as dissolved organic carbon (PDOC). The availability of dissolved organic carbon (DOC) is a major constraint for the heterotrophic bacteria, consequently the release by cell mortality of the recently photosynthate carbon is expected to benefit the bacterial community and should be channelled through the microbial food web. All this processes have been poorly documented and the contribution of the phytoplankton cell death to the release of PDOC has not been yet explored in natural communities. The goal of this PhD Thesis is to provide quantitative information on phytoplankton and bacteria cell death in natural communities and to document the fraction of DOC released by phytoplankton ...
Menindee Lakes algal bloom triggers mass fish deathsMenindee Lakes' algal bloom triggers mass fish deaths
The NSW government is investigating the cause and extent of shocking algal bloom events in the states far west near Broken Hill, that may have killed a million or more fish.
Dino-Killing Asteroid Impact Triggered Lethal Algal Bloom | Live ScienceDino-Killing Asteroid Impact Triggered Lethal Algal Bloom | Live Science
The dinosaur-killing asteroid that hit Earth about 66 million years ago likely triggered giant algal blooms that killed ancient marine life.
Algal Bloom Advisories Increased in 3 Utah Water BodiesAlgal Bloom Advisories Increased in 3 Utah Water Bodies
PROVO, Utah (ABC4 Utah) Utah County Health Department officials have updated advisories related to the algal bloom in Utah County waterbodies.
Algal Bloom Test Articles on Environmental XPRTAlgal Bloom Test Articles on Environmental XPRT
Find algal bloom test articles on Environmental XPRT, the worlds largest environmental industry marketplace and information resource.
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Nutrient cycling in the Columbia River BasinNutrient cycling in the Columbia River Basin
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Eutrophication - WikipediaEutrophication - Wikipedia
eutrophication - Everything2.comeutrophication - Everything2.com
Eutrophication - WikipediaEutrophication - Wikipedia
eutrophication facts, information, pictures | Encyclopedia.com articles about eutrophicationeutrophication facts, information, pictures | Encyclopedia.com articles about eutrophication
Lake Baikal Ecosystem Faces the Threat of EutrophicationLake Baikal Ecosystem Faces the Threat of Eutrophication
Nitrogen, Phosphorus, and Eutrophication in the Coastal Marine Environment | ScienceNitrogen, Phosphorus, and Eutrophication in the Coastal Marine Environment | Science
Eutrophication | Cary Institute of Ecosystem StudiesEutrophication | Cary Institute of Ecosystem Studies
Planning and Management of Lakes and Reservoirs: An Integrated Approach to EutrophicationPlanning and Management of Lakes and Reservoirs: An Integrated Approach to Eutrophication
Effects of Eutrophication, Seasonality and Macrofouling on the Diversity of Bacterial Biofilms in Equatorial Coral Reefs - ePICEffects of Eutrophication, Seasonality and Macrofouling on the Diversity of Bacterial Biofilms in Equatorial Coral Reefs - ePIC
Eutrophication (Excessive Fertilization) | SSWM - Find tools for sustainable sanitation and water management!Eutrophication (Excessive Fertilization) | SSWM - Find tools for sustainable sanitation and water management!
Shared Waters > Agricultural phosphorus and eutrophication...Shared Waters > Agricultural phosphorus and eutrophication...
Detergents and P and eutrophication | Usa Online EssaysDetergents and P and eutrophication | Usa Online Essays
Satellite-based monitoring of reservoir eutrophication in the Brazil Semi-arid region - PDFSatellite-based monitoring of reservoir eutrophication in the Brazil Semi-arid region - PDF
BMAA and ALS: A Close Look at Eutrophication | Sciences In the Mural Of LifeBMAA and ALS: A Close Look at Eutrophication | Sciences In the Mural Of Life
Cultural eutrophication - WikipediaCultural eutrophication - Wikipedia
Cultural Eutrophication | Encyclopedia.comCultural Eutrophication | Encyclopedia.com
Eutrophication and the Ecosystem | SpringerLinkEutrophication and the Ecosystem | SpringerLink
Cultural eutrophication | ecology | Britannica.comCultural eutrophication | ecology | Britannica.com
Nutrients and EutrophicationNutrients and Eutrophication
Saltmarsh plant responses to eutrophication | Northeast Climate Science CenterSaltmarsh plant responses to eutrophication | Northeast Climate Science Center
Eutrophication makes toxic cyanobacteria more toxicEutrophication makes toxic cyanobacteria more toxic
Water artificial circulation for eutrophication controlWater artificial circulation for eutrophication control
Simulating eutrophication in a metacommunity landscape: an aquatic model ecosystem | SpringerLinkSimulating eutrophication in a metacommunity landscape: an aquatic model ecosystem | SpringerLink
Integrated HEAT+ based classifications of eutrophication status - European Environment AgencyIntegrated HEAT+ based classifications of 'eutrophication status' - European Environment Agency
Phosphorus in lakes - Eutrophication indicators in lakes</span>Phosphorus in lakes - Eutrophication indicators in lakes</span>
Controlling Eutrophication: Nitrogen and Phosphorus | ScienceControlling Eutrophication: Nitrogen and Phosphorus | Science
Cultural EutrophicationCultural Eutrophication
Cultural EutrophicationCultural Eutrophication
Hazardous Substances and Eutrophication | OSPAR CommissionHazardous Substances and Eutrophication | OSPAR Commission
Eutrophication - Appropedia: The sustainability wikiEutrophication - Appropedia: The sustainability wiki
Eutrophication | AirclimEutrophication | Airclim
Carolina Investigations® for AP® Environmental Science: Cultural Eutrophication and Biodegradable Waste | Carolina.comCarolina Investigations® for AP® Environmental Science: Cultural Eutrophication and Biodegradable Waste | Carolina.com
A millennial-scale chronicle of evolutionary responses to cultural eutrophication in DaphniaA millennial-scale chronicle of evolutionary responses to cultural eutrophication in Daphnia
Eutrophication makes toxic cyanobacteria more toxic - academics Eutrophication makes toxic cyanobacteria more toxic - academics
Eutrophication Scenaria from Reduced Nutrient Loads to the North SeaEutrophication Scenaria from Reduced Nutrient Loads to the North Sea
Environmental Chemistry: Nitrates, Phosphates, and Eutrophication | Sargent WelchEnvironmental Chemistry: Nitrates, Phosphates, and Eutrophication | Sargent Welch
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EutrophicationBaltic StatesWater Pollution, ChemicalPhytoplanktonDrainage, SanitaryLakesFresh WaterZooplanktonOceans and SeasEcosystemPhosphorusHarmful Algal BloomWater PollutionHuman ActivitiesWater QualityNitrogenSeaweedFertilizersClimatic ProcessesZosteraceaeBiomassEnvironmental MonitoringBiodiversityWater MovementsGeologic SedimentsNitrosomonadaceaeEnvironmentWater Pollutants, ChemicalAnthozoaSeawaterAnimal DiseasesRiversEukaryotaWater MicrobiologyFood ChainAgricultureConservation of Natural ResourcesSoilPopulation DynamicsClimate ChangePopulation DensityWater SupplyEcologyWaterModels, TheoreticalEncyclopedias as TopicEichhorniaEstuariesConsumer ParticipationLeechesEncyclopediasDictionaries, MedicalDictionaries as Topic
Nitrogen and PhosphorusRate of eutrophicationArises from the oversupply of nutrientsGrowth of algaePhosphorusEcosystemsNutrientsLakesPhytoplanktonAlgaePollutionCulturalFreshwaterGreekAnthropogenicProcessDetergentsSpeciesAlgal growthSedimentWater qualityCyanobacteriaSevereFertilizationExperiment
Nitrogen and Phosphorus1
Rate of eutrophication2
Arises from the oversupply of nutrients2
Growth of algae3
Phosphorus3
  • Phosphorus is often regarded as the main culprit in cases of eutrophication in lakes subjected to "point source" pollution from sewage pipes. (wikipedia.org)
  • Policy changes to control point sources of phosphorus have resulted in rapid control of eutrophication. (wikipedia.org)
  • This study analyses the response of the carbon and nitrogen isotopic composition of sedimentary organic matter to rapid human-induced eutrophication and meromixis as well as subsequent restoration efforts [in-lake phosphorus (P)-Precipitation, P-remediation of the well inflow and multiannual destratification] in a 46-yr sediment core sequence (1963-2009) from Fischkaltersee, a small hard-water lake (S-Germany). (jlimnol.it)
Ecosystems2
Nutrients7
  • Eutrophication (pronounced you-tro-fi-KAY-shun) is a natural process that occurs in an aging lake or pond as that body of water gradually builds up its concentration of plant nutrients. (encyclopedia.com)
  • Cultural or artificial eutrophication occurs when human activity introduces increased amounts of these nutrients, which speed up plant growth and eventually choke the lake of all of its animal life. (encyclopedia.com)
  • However, eutrophication can be speeded up artificially, and then the lake and its inhabitants eventually suffer as the input of nutrients increases far beyond what the natural capacity of the lake should be. (encyclopedia.com)
  • However, artificial or human-caused eutrophication has become so common that the word eutrophication by itself has come to mean a very harmful increase and acceleration of nutrients. (encyclopedia.com)
  • Eutrophication is a process in which the ecosystem is enriched by nutrients, encouraging excess plant growth. (caryinstitute.org)
  • Although eutrophication is a natural form of succession which usually takes hundreds or thousands of years, it can be enhanced through human inputs of nutrients. (caryinstitute.org)
  • Eutrophication" has become synonymous with "excessive fertilisation" or the input of sufficient amounts of aquatic plant nutrients to cause the growth of excessive amounts of algae and/or aquatic macrophytes in a water body such that beneficial uses of the water body (i.e., water quality) are impaired. (sswm.info)
Lakes5
Phytoplankton1
  • As eutrophication progresses, phytoplankton species tend to shift from chlorphytes (green algae) to cyanophytes ( blue-gree algae , which are in fact prokaryotic and are sometimes classified as bacteria ). (everything2.com)
Algae2
  • As noted above, if eutrophication is sufficiently severe, an algal bloom will occur (a solid mat of vegetation that covers the water's surface) and when these algae die, they will sink to the bottom. (everything2.com)
  • They also have a lot of plants and algae (more information on eutrophication) . (rmbel.info)
Pollution2
Cultural1
Freshwater1
Greek1
  • Eutrophication is not necessarily harmful or bad, and the word itself is often translated from the Greek as meaning "well nourished" or "good food. (encyclopedia.com)
Anthropogenic1
Process4
  • Natural eutrophication is usually a fairly slow and gradual process, occurring over a period of many centuries. (encyclopedia.com)
  • To evaluate the observations indicating the ongoing process of eutrophication of Lake Baikal, a field study in July 2012 in the two largest bays of Lake Baikal, Barguzinsky and Chivyrkuisky, was organized. (hindawi.com)
  • To prevent further extensions of this process in unique ecosystem of Lake Baikal, the detailed study and monitoring of the coastal zone, the identification of the sources of eutrophication, and the development of measures to reduce nutrient inputs in the waters are urgently needed. (hindawi.com)
  • Hence, we conclude that in Fischkaltersee δ 13 C SOM was controlled by photoautotrophic input only during an early phase in the eutrophication process. (jlimnol.it)
Detergents3
Species2
  • Change to algal community structure: eutrophication not only increases the absolute concentration of plant matter in the water, but also changes the species composition. (everything2.com)
  • Depending on the algal species that proliferate, eutrophication at times produces toxins that threaten drinking water supplies, recreational swimming and consumption of seafood. (uvachemistry.com)
Algal growth1
Sediment1
  • In addition, the sediment record was compared with detailed data on water column chemistry during almost (1977-2009) the recorded history of eutrophication and trophic recovery of the named lake. (jlimnol.it)
Water quality1
Cyanobacteria2
Severe1
Fertilization1
  • JONES LEE, A. LEE, G.F. (n.y): Eutrophication (Excessive Fertilization). (sswm.info)
Experiment1
Eutrophication | Cary Institute of Ecosystem Studies
Eutrophication | Cary Institute of Ecosystem Studies (caryinstitute.org)
Nitrogen, Phosphorus, and Eutrophication in the Coastal Marine Environment | Science
Nitrogen, Phosphorus, and Eutrophication in the Coastal Marine Environment | Science (science.sciencemag.org)
Cultural Eutrophication
Cultural Eutrophication (www2.kenyon.edu)
Cultural eutrophication | ecology | Britannica.com
Cultural eutrophication | ecology | Britannica.com (britannica.com)
Laundry Detergent | MOTHER EARTH NEWS
Laundry Detergent | MOTHER EARTH NEWS (motherearthnews.com)
Natural Environment | Nottingham Trent University
Natural Environment | Nottingham Trent University (ntu.ac.uk)
National Water-Quality Assessment (NAWQA)
National Water-Quality Assessment (NAWQA) (usgs.gov)
Projects | Page 2 | World Resources Institute
Projects | Page 2 | World Resources Institute (wri.org)
Agriculture | Free Full-Text | Environmental Impacts of the Beef Production Chain in the Northeast of Portugal Using Life...
Agriculture | Free Full-Text | Environmental Impacts of the Beef Production Chain in the Northeast of Portugal Using Life... (mdpi.com)
Water | World Resources Institute
Water | World Resources Institute (wri.org)
G9181 Agricultural Phosphorus and Water Quality | University of Missouri Extension
G9181 Agricultural Phosphorus and Water Quality | University of Missouri Extension (extension.missouri.edu)
Critical Loads of Sulphur and Nitrogen for Terrestrial Ecosystems in Europe and Northern Asia Using Different Soil Chemical...
Critical Loads of Sulphur and Nitrogen for Terrestrial Ecosystems in Europe and Northern Asia Using Different Soil Chemical... (link.springer.com)
Redox reactions and weak buffering capacity lead to acidification in the Chesapeake Bay | Nature Communications
Redox reactions and weak buffering capacity lead to acidification in the Chesapeake Bay | Nature Communications (nature.com)
ReBALAN:CE - Recycling Biomass to Agricultural Land: Capitalising on Eutrophication
ReBALAN:CE - Recycling Biomass to Agricultural Land: Capitalising on Eutrophication (rebalance.stir.ac.uk)
ReBALAN:CE - Recycling Biomass to Agricultural Land: Capitalising on Eutrophication
ReBALAN:CE - Recycling Biomass to Agricultural Land: Capitalising on Eutrophication (rebalance.stir.ac.uk)
ReBALAN:CE - Recycling Biomass to Agricultural Land: Capitalising on Eutrophication
ReBALAN:CE - Recycling Biomass to Agricultural Land: Capitalising on Eutrophication (rebalance.stir.ac.uk)
Bayesian Data Analysis - Andrew Gelman, John B Carlin, Hal S Stern, David B Dunson, Aki Vehtari - Bok (9781439840955) | Bokus
Bayesian Data Analysis - Andrew Gelman, John B Carlin, Hal S Stern, David B Dunson, Aki Vehtari - Bok (9781439840955) | Bokus (bokus.com)
Living marine resources and their sustainable development
Living marine resources and their sustainable development (fao.org)
General & Introductory Environmental Studies | Subjects | Wiley
General & Introductory Environmental Studies | Subjects | Wiley (wiley.com)
Environmental Chemistry | Chemistry | Subjects | Wiley
Environmental Chemistry | Chemistry | Subjects | Wiley (wiley.com)
A change in phytoplankton community index with water quality improvement in Tolo Harbour, Hong Kong | Request PDF
A change in phytoplankton community index with water quality improvement in Tolo Harbour, Hong Kong | Request PDF (researchgate.net)
Simulating eutrophication in a metacommunity landscape: an aquatic model ecosystem | SpringerLink
Simulating eutrophication in a metacommunity landscape: an aquatic model ecosystem | SpringerLink (link.springer.com)
Search Results - AccessScience from McGraw-Hill Education
Search Results - AccessScience from McGraw-Hill Education (accessscience.com)
Frontiers | The Effects of Nutrient Imbalances and Temperature on the Biomass Stoichiometry of Freshwater Bacteria |...
Frontiers | The Effects of Nutrient Imbalances and Temperature on the Biomass Stoichiometry of Freshwater Bacteria |... (frontiersin.org)
Marine Science and Technology Archives - Nova Science Publishers
Marine Science and Technology Archives - Nova Science Publishers (novapublishers.com)
Water artificial circulation for eutrophication control
Water artificial circulation for eutrophication control (aimsciences.org)