ZooplanktonBiomassPhosphorusAlgaeChlorophyllNitrogenConcentrationsLimitationPhotosynthesisCyanobacteriaUptakeIncrease in phytoplanktonDynamicsNitrateAbundanceWatersCarbonEnrichmentBloomsStoichiometrySalinityCoastal2002EcologicalGrowthSunlightOrganicOceansSeasonalSpeciesPatternsEstuarineChanges in nutrientMinerals and nutrientsIsotopicHigh nutrientFeastDiatomsProductivitySeasConsumeRunoffImpactsWater clarityEcosystemMarineClarity
Zooplankton16
- We investigate the seasonally and spatially varying relationship between sea ice, water column structure, light, nutrients and productivity and the roles they play in structuring energy transfer to pelagic zooplankton and benthic megafauna. (sams.ac.uk)
- The model was designed to simulate the dynamic cycling of carbon, nitrogen and phosphorus through bacteria, phytoplankton and zooplankton functional groups, with each pool having unique C : N : P dynamics. (copernicus.org)
- Plus, they found that zooplankton, the tiny animals that feed on phytoplankton, were much more abundant in the doughnut. (scienceblog.com)
- Their population dynamics are controlled by sunlight, nutrient availability, grazing by tiny planktonic animals (zooplankton) and mortality caused by viral infection. (eurekalert.org)
- Our aim was to model the interaction between viruses, phytoplankton, zooplankton grazing and nutrient levels," said Dr Adrian Martin of the National oceanography Centre (NOC), who collaborated in the project with Dr Christopher Rhodes, a bio-mathematician at Imperial College London. (eurekalert.org)
- The interaction between viruses, phytoplankton, zooplankton grazing and nutrient levels produces subtle feedbacks and complex dynamics, which present a challenge to modellers. (eurekalert.org)
- This means that more of the carbon contained in phytoplankton would be available to zooplankton and other creatures higher up the food chain. (eurekalert.org)
- We assess how nutrient availability and the N:P stoichiometry in lakes are affected by changes in atmospheric nitrogen deposition and by warming, and its effects on nutrient limitation of phytoplankton and zooplankton, nutrient regeneration and trophic transfer efficiencies, and productivity in northern boreal and subarctic lakes. (umu.se)
- The effects of planktivorous fish on phytoplankton through nutrient recycling and zooplankton herbivory were experimentally separated and their relative importance quantified in a eutrophic humic lake. (lu.se)
- Outside these chambers, phytoplankton were exposed to zooplankton herbivory and to nutrient recycling by fish and zooplankton, whereas inside the chambers, phytoplankton were exposed only to nutrient recycling by these consumers. (lu.se)
- However, our results also indicate that changes in zooplankton grazing induced by fish were an important mechanism by which fish affected all phytoplankton groups except cyanobacteria. (lu.se)
- Comparison of effect sizes revealed that the effects on cyanobacteria and chlorophytes through nutrient recycling were stronger than those through zooplankton grazing. (lu.se)
- Moreover, most of the fish-mediated nutrient recycling effects were due to increased nutrient recycling by zooplankton rather than direct nutrient excretion by fish. (lu.se)
- article{63d25276-c002-4471-988c-19f627cd9a9d, abstract = {{The effects of planktivorous fish on phytoplankton through nutrient recycling and zooplankton herbivory were experimentally separated and their relative importance quantified in a eutrophic humic lake. (lu.se)
- Kenya almost every year since 1977-1978, when the to zooplankton and phytoplankton, especially in estuarine disease emerged in these countries. (cdc.gov)
- For example, when algae and phytoplankton increase in bio-mass, zooplankton blooms rapidly follow. (who.int)
Biomass10
- Trajectories of Changes in Phytoplankton Biomass, Phaeocystis globosa and Diatom (incl. (ifremer.fr)
- Phosphorus (P) has been identified as the primary nutrient limiting phytoplankton biomass in the Laurentian Great Lakes, and thus phytoplankton biomass varies as a function of P loading. (cmich.edu)
- The nutrient limitation of the phytoplankton was evaluated using biomass response measurements to nutrient enrichment bioassays in a complete factorial of P, nitrogen (N), and silicon (Si). (cmich.edu)
- During spring overturn, P+Si yielded higher phytoplankton biomass than did P additions without Si at 2 of the 3 stations. (cmich.edu)
- A quantitative assessment of the bioassays indicated that 63 to 94% of the biomass yield during spring overturn could be attributed to Si, while 48 to 68 % of the biomass yield during late stratification and autumn overturn could be attributed to N. Water chemistry data collected in 2002 and 2003 predicted similar seasonal trends in nutrient limitation. (cmich.edu)
- These results suggest that seasonal variation in phytoplankton nutrient limitation is a probable factor in predicting changes in phytoplankton biomass and taxonomic composition in the central basin of Lake Erie. (cmich.edu)
- Three microbial loop sub-model configurations were used to isolate mechanisms by which the microbial loop could influence phytoplankton biomass, considering (i) the role of bacterial mineralisation, (ii) the effect of micrograzer excretion, and (iii) bacterial ability to compete for dissolved inorganic nutrients. (copernicus.org)
- The nutrient flux pathways between the abiotic pools and biotic groups and the patterns of biomass and nutrient limitation of the different phytoplankton groups were quantified for the different model configurations. (copernicus.org)
- Considerable variation in phytoplankton biomass and dissolved organic matter demonstrated the sensitivity of predictions to assumptions about microbial loop operation and the specific mechanisms by which phytoplankton growth was affected. (copernicus.org)
- In the absence of phytoplankton samples, when only water quality data are collected, these categories can be used to infer important aspects of phytoplankton community structure (e.g., taxonomic composition, biomass) and function (e.g., light adaptation, net oxygen production, exudation). (potomacriver.org)
Phosphorus13
- Low-nutrient, low-chlorophyll (LNLC) regions are aquatic zones that are low in nutrients (such as nitrogen, phosphorus, or iron) and consequently have low rate of primary production, as indicated by low chlorophyll concentrations. (wikipedia.org)
- Comparison of the simulations identified that the microbial loop most significantly altered phytoplankton growth by periodically amplifying internal phosphorus limitation due to bacterial competition for phosphate to satisfy their own stoichiometric requirements. (copernicus.org)
- Harmful blooms tend to form in warm water with high levels of nutrients such as nitrogen and phosphorus. (cdc.gov)
- There, Michigan's biggest rivers drain a watershed rich in phosphorus and other nutrients from cities and farms. (scienceblog.com)
- These nutrients are usually in the form of phosphorus and/or nitrogen. (worldatlas.com)
- Modest changes in nutrient limitation patterns have occurred, with expanded areas of nitrogen-limitation and contracted areas of nutrient saturation (i.e., not limited by nitrogen or phosphorus). (potomacriver.org)
- Special focus within my research lies within studying the importance of organic matter (humic substances) and nutrients (nitrogen and phosphorus) for lake ecosystem productivity and food web structure. (umu.se)
- Eutrophication is the process by which an entire body of water, or parts of it, becomes progressively enriched with minerals and nutrients, particularly nitrogen and phosphorus. (dbpedia.org)
- In coastal waters on the other hand, the main contributing nutrient is more likely to be nitrogen, or nitrogen and phosphorus together. (dbpedia.org)
- Phytoplankton in the Mediterranean Sea require nitrogen, phosphorus, light, and carbon dioxide to thrive. (scuba-do.com)
- Phytoplankton, crucial for marine ecosystems, require nitrogen and phosphorus for growth. (scuba-do.com)
- 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. (bvsalud.org)
- The growth of a superabundance of algae usually from an enrichment of a natural body of water by the addition of dissolved nutrients, especially nitrogen and phosphorus. (bvsalud.org)
Algae11
- Algae that live in the water can be grouped into two categories, seaweed and phytoplankton. (cdc.gov)
- SeaWiFS satellite data showed Kerfoot's team a roughly circular river of phytoplankton - algae and other tiny plants - that was drifting counterclockwise around the southern end of Lake Michigan, creating a doughnut. (scienceblog.com)
- As mentioned, however, when nutrient levels are extra high, the algae grows at an extreme rate, and can overpower everything else in the area, causing these dead zones. (worldatlas.com)
- Phytoplankton, seaweeds and algae thrive in these nutrient rich environments. (worldatlas.com)
- Tiny free-floating algae called phytoplankton dominate biological production in the world's oceans and sit at the base of the marine food web. (eurekalert.org)
- Phytoplankton and blue-green algae blooms in the North Atlantic Ocean and Arctic Ocean are particularly intense this year and are creating some spectacular and enormous green swirls in the water. (livescience.com)
- Diatoms, a type of phytoplankton rich in chlorophyll (the green pigment found in plants and algae), may also be contributing to what look like green paint strokes decorating the surface of the water. (livescience.com)
- One of the primary causes of the oxygen decline is that human-caused pollution - primarily nutrient-dense fertilizers and sewage - has for decades spilled into the ocean from the Scandinavian countries, fueling oxygen-depleting algae blooms. (livescience.com)
- Polynyas support the growth and accumulation of plantlike organisms, called phytoplankton, which consist mostly of algae and bacteria and are the foundation of the marine food chain. (nasa.gov)
- The lack of nutrient-rich algae prevents the water from turning green and murky, resulting in stunningly blue waters. (scuba-do.com)
- Sunlight can affect the persistence and spread of a pathogen if it is associated with phytoplankton and/or algae. (who.int)
Chlorophyll9
- The naming of these regions follows the same format as the more widely known high-nutrient, low-chlorophyll (HNLC) regions, which display high macro-nutrient concentrations but unusually low primary production and chlorophyll concentrations, usually due to lack of micro-nutrients, usually iron-limitation. (wikipedia.org)
- In aquatic systems, chlorophyll concentrations are frequently used as a proxy measurement for photosynthetic plankton (phytoplankton) abundance and thus the amount of primary production. (wikipedia.org)
- Phytoplankton uptake rates, calculated from declining chlorophyll a concentrations as water moved over the reef, appeared to be near the physical limits of mass transfer. (ningaloo-atlas.org.au)
- Field investigations and monthly samplings have been carried out to determine environmental parameters, nutrients, chlorophyll-a and phytoplankton in the southern part of the input water channels of Mond, Delvar and Heleh farmed shrimp complexes from April to December 2011. (ac.ir)
- in others, increased dust made the phytoplankton healthier, with brighter chlorophyll. (popsci.com)
- In 2008, I joined the Idaho Water Science Center as a member of the Boise Field Office to operate surface water gages and manage data collection for a project aimed at characterizing nutrient, sediment, and chlorophyll-a transport in the Boise and Snake Rivers. (usgs.gov)
- The SeaWiFS data identify the areas of greatest biological productivity, based on the amount of light absorbed by phytoplankton chlorophyll. (nasa.gov)
- It is to be noted that the coastal margins have the highest abundance of chlorophyll, as nutrients are supplied here to the upper oceans via coastal upwelling, as well as terrestrial and riverine discharge. (worldatlas.com)
- Besides this, the upwelling zones also have high chlorophyll levels, as here localized upwelling due to the cyclonic mesoscale eddies and fronts vertically transports nutrients from the nutrient-rich subsurface to the epipelagic zone . (worldatlas.com)
Nitrogen10
- Nutrient availability in the mixed layer, often a limiting factor for phytoplankton growth, is derived from three primary sources: 1) reintroduced nutrients from deep ocean water that is mixed into surface waters (i.e., new production), 2) recycled nutrients in the surface ocean (i.e., regenerated production), also known as the regeneration loop, and 3) 'external' nutrients introduced from terrestrial or atmospheric input and/or biological processes (such as, nitrogen fixation). (wikipedia.org)
- Seasonal observations of phytoplankton uptake at Ningaloo Reef, Western Australia, reinforce the importance of particulate organic nitrogen (PON) and carbon (POC) in reef nutrient budgets and identify wave action and the dynamics of regional currents (over a range of temporal and spatial scales) as important factors determining plankton supply to the reef. (ningaloo-atlas.org.au)
- It's above-normal flow, so there's a lot of fresh water and nutrients, such as nitrogen and phosphorous, going into the Gulf of Mexico right now. (npr.org)
- JOYCE: Nitrogen and phosphorous are like plant food for tiny phytoplankton that float in the warm Gulf waters. (npr.org)
- When dust delivers this nitrogen and other nutrients to the water, they encourage phytoplankton to bloom-tinting the oceans greenchanging the very color of the oceans. (popsci.com)
- Runoff from farms, as well as nitrogen air pollution brought about an extreme increase in previously unseen nutrients into the bay. (worldatlas.com)
- These changes imply that long-term reductions in nitrogen load have led to expanded areas with nutrient-limited phytoplankton growth in the Bay, reflecting long-term water-quality improvements in the context of nutrient enrichment. (potomacriver.org)
- Rich in iron and nitrogen , fecal plumes help feed tiny creatures called phytoplankton. (clf.org)
- L'increment de la concentració de nutrients pot ser degut a diversos motius, essent els abocaments incontrolats d'aigües residuals urbanes i i d'aigües que han estat utilitzades en l'agricultura (que contenen fertilitzants) els més perjudicials per a l'ecosistema aquàtic, ja que aporten una gran quantitat de nitrogen i fòsfor al medi i, d'aquesta manera, provoquen el seu desequilibri. (dbpedia.org)
- Increased phosphorous and nitrogen from sewage and agricultural run-off are conducive for phytoplankton production. (who.int)
Concentrations5
- An apparent gradual increase over time in the proportion of NH 4 + in the phytoplankton N pool suggests that either very low phytoplankton growth rates resulted in an N turnover time that exceeded the travel time sampled during this study, or a portion of the phytoplankton community continued to access nitrate even in the presence of elevated NH 4 + concentrations. (usgs.gov)
- We will undertake an extensive program of measuring inorganic and organic nutrients, their concentrations, isotopic signatures and vertical fluxes to understand the role of vertical mixing and advection (WP1) in regulating nutrient supply to PP in the surface ocean. (sams.ac.uk)
- Production within this catchment appears insufficient to maintain offshore phytoplankton concentrations, and advection of remotely sourced production into the catchment is required to balance reef uptake. (ningaloo-atlas.org.au)
- Elevated phytoplankton levels (Chla greater than 10 µg/L) were avoided when nutrient concentrations were below 0.03 TP mg/L and 0.07 TN mg/L and Secchi depth was greater than 5.5 m. (potomacriver.org)
- More than half a century ago, Heukelekian and Heller [6] showed that at low nutrient concentrations substrate plays an important role in bacterial multiplication. (who.int)
Limitation6
- We re-evaluated nutrient limitation of phytoplankton in the central basin of Lake Erie over spatial (i.e. 3 offshore stations) and temporal (i.e. monthly from June to October) scales. (cmich.edu)
- Researchers used previous collected nutrient bioassay results to develop a model that predicts nutrient limitation in surface waters of the Chesapeake Bay mainstem. (potomacriver.org)
- In 2020, a team of researchers used these bioassay results to model the temporal and spatial distribution of nutrient limitation in Chesapeake Bay. (potomacriver.org)
- Researchers then applied the model to water quality data from the long-term, fixed-site monitoring program (1990 - 2017) to characterize nutrient limitation on much broader geographic and temporal scales than would be feasible using bioassays. (potomacriver.org)
- 2021. Nutrient limitation of phytoplankton in Chesapeake Bay: Development of an empirical approach for water-quality management. (potomacriver.org)
- Study on nutrient limitation of phytoplankton growth in Xiangxi Bay of the Three Gorges Reservoir, China. (nih.gov)
Photosynthesis3
- In addition to light and CO2, photosynthesis requires nutrients, such as nitrate, phosphate, silicate, and iron in order for phytoplankton to grow. (wikipedia.org)
- Phytoplankton pigments absorb sunlight for photosynthesis, protect the chloroplast from damage caused by excess light energy, and influence the color of the water. (mdpi.com)
- The nutrients in the ocean are cycled by a process referred to as biological pumping, while the phytoplankton extracts the nutrients from the surface water and, along with the incoming solar radiation and dissolved carbon dioxide, produce organic compounds by photosynthesis . (worldatlas.com)
Cyanobacteria6
- Cyanobacteria are a type of phytoplankton found in water and moist soil. (cdc.gov)
- This natural cyanobacteria feeds off those nutrients, and can in some areas maintain a healthy balance with its environment. (worldatlas.com)
- Phytoplankton and cyanobacteria consume large amounts of nutrients and leave the water deprived of oxygen. (livescience.com)
- Our results show that fish had significant positive effects on cyanobacteria, cryptomonads, and chlorophytes inside the chambers, indicating that fish-mediated nutrient recycling had. (lu.se)
- Our results show that fish had significant positive effects on cyanobacteria, cryptomonads, and chlorophytes inside the chambers, indicating that fish-mediated nutrient recycling had significant effects on these phytoplankton groups. (lu.se)
- In conclusion, we provide experimental evidence supporting the hypothesis that fish-mediated nutrient recycling is an important mechanism affecting phytoplankton community structure and favoring cyanobacteria dominance in lakes. (lu.se)
Uptake2
- Understanding availability and uptake of different N sources at the base of aquatic food webs is critical to establishment of effective nutrient management programs. (usgs.gov)
- Phytoplankton-derived PON flux of 2 to 5 mmol N m-2 d-1 was on the order of that typical for dissolved N uptake-confirming that particle feeding may supply the N missing in reef N budgets-while POC flux of 14 to 27 mmol C m-2 d-1 was on the order of net community metabolism. (ningaloo-atlas.org.au)
Increase in phytoplankton1
- And, research shows that just a 1% increase in phytoplankton activity would remove hundreds of millions of tons of carbon pollution a year - the equivalent of planting two billion trees. (clf.org)
Dynamics3
- The results demonstrate how commonly employed simplifying assumptions about model structure can lead to large uncertainty in phytoplankton community predictions and highlight the need for aquatic ecosystem models to carefully resolve the variable stoichiometry dynamics of microbial interactions. (copernicus.org)
- Phytoplankton supply was highly variable at daily-to-seasonal time scales in response to the dynamics of a regional current system dominated by the downwelling-favourable Leeuwin Current (LC). (ningaloo-atlas.org.au)
- Understanding the intricate relationship between nutrient supply, phytoplankton growth, and water exchange is crucial for comprehending the unique ecosystem dynamics of the Mediterranean Sea and its vulnerability to environmental changes. (scuba-do.com)
Nitrate2
- The sub-optimal growth of phytoplankton and the resulting persistence of unutilized plant nutrients (nitrate and phosphate) in the surface waters of certain ocean regions has been a long-standing puzzle 1 , 2 . (nature.com)
- Essential nutrients such as nitrate, phosphate, and silicic acid are found in deep-ocean waters. (worldatlas.com)
Abundance2
- Using SeaWiFS, graduate student Foad Yousef has plotted a 75 percent decline in chorophyll a, a measure of phytoplankton abundance, from 2001 to 2008. (scienceblog.com)
- In this way, human activity has massively increased the abundance of these nutrients in the oceans, causing an imbalance in the seas. (worldatlas.com)
Waters3
- Contrary to the expectation of a monotonic relationship between surface nutrient drawdown and carbon export, we found that lateral nutrient transport from lower C : P tropical waters to high C : P subtropical waters could cause carbon export to decrease with increased tropical nutrient utilization. (copernicus.org)
- Nutrients transported to depth below the pycnocline can be reintroduced to the surface through ocean mixing processes (including Ekman upwelling and turbulent diffusion) that bring deep, nutrient-rich waters back to the ocean surface and stimulate primary production. (wikipedia.org)
- The phytoplankton communities, which dwell in the top waters and rely on this upwelling of nutrients, are changing in response, Cael says. (newscientist.com)
Carbon8
- Marine phytoplankton stoichiometry links nutrient supply to marine carbon export. (copernicus.org)
- Deviations of phytoplankton stoichiometry from Redfield proportions (106C : 1P) could therefore have a significant impact on carbon cycling, and understanding which environmental factors drive these deviations may reveal new mechanisms regulating the carbon cycle. (copernicus.org)
- Our multi-environmental model predicted a decline in p CO 2, atm of ∼ 46 ppm when temperature spanned a change of 10 °C. Thus, we find that variation in marine phytoplankton stoichiometry and its environmental controlling factors can lead to nonlinear controls on p CO 2, atm , suggesting the need for further studies of ocean C : P and the impact on ocean carbon cycling. (copernicus.org)
- To bridge the missing links between variable marine elemental stoichiometry, phytoplankton physiology and carbon cycling, we embed four environmentally controlled stoichiometric models into a five-box ocean model. (copernicus.org)
- Adding nutrients to the sea could decrease viral infection rates among phytoplankton and enhance the efficiency of the biological pump, a means by which carbon is transferred from the atmosphere to the deep ocean, according to a new mathematical modelling study. (eurekalert.org)
- Artificial enhancement of the biological carbon pump by fertilizing the oceans with nutrients has been proposed as a possible geo-engineering 'fix' for global warming caused by the increase of atmospheric carbon dioxide from anthropogenic sources. (eurekalert.org)
- The decrease in viral infection rates caused by artificially adding nutrients to the sea could in the future benefit humans by increasing the efficiency of the biological carbon pump, making these proposed ocean geo-engineering schemes more viable," said Dr Rhodes. (eurekalert.org)
- Thanks to these nutrients, phytoplankton absorb 40% of all carbon dioxide from the atmosphere. (clf.org)
Enrichment3
- Rhodes, C. J. & Martin, A. P. The influence of viral infection on a plankton ecosystem undergoing nutrient enrichment. (eurekalert.org)
- Eutrophication, or excessive enrichment of nutrients in the water, can stimulate algal blooms. (who.int)
- The enrichment may be natural, or unnatural, for example, from WATER POLLUTION, or controlled such as is done for the aquaculture of PHYTOPLANKTON. (bvsalud.org)
Blooms5
- Most harmful blooms that make people and animals sick are caused by phytoplankton. (cdc.gov)
- These harmful blooms can be caused by many types of phytoplankton. (cdc.gov)
- Particles that fall into water can deliver nutrients that feed life in the sea, creating great algal blooms. (popsci.com)
- Finally, we discuss management strategies, including nutrient load reductions, changes in hydrodynamics and chemical and biological controls, that can help to prevent or mitigate the proliferation of cyanobacterial blooms. (nature.com)
- Can micro-or mesozooplankton control phytoplankton spring blooms in the Baltic Proper under climate warming? (io-warnemuende.de)
Stoichiometry2
- To bridge the missing links between variable marine elemental stoichiometry, phytoplankton. (copernicus.org)
- Importantly, each configuration led to a unique prediction of the overall community composition, and we conclude that the microbial loop plays an important role in nutrient recycling by regulating not only the quantity, but also the stoichiometry of available N and P that is available to primary producers. (copernicus.org)
Salinity2
- Phytoplankton growth occurs in the upper ocean, or mixed layer, where sufficient light energy is available and turbulent mixing near the surface increases vertical homogeneity in ocean tracers like temperature, salinity, and density. (wikipedia.org)
- 1999). These nutrient thresholds were used in combination with season- and salinity-dependent Secchi depth thresholds to characterize reference conditions for estuarine phytoplankton (see Water Quality Binning Method ). (potomacriver.org)
Coastal3
- LNLC regions are generally not found near coasts, owing to the fact that coastal areas receive more nutrients from terrestrial sources and upwelling. (wikipedia.org)
- Coastal phytoplankton boasts an incredible diversity of life forms. (pfeil-verlag.de)
- I have been studying the effects of increased runoff of dissolved organic matter on coastal phytoplankton, both during my PhD-thesies work and also later on. (lu.se)
20021
- There was a mismatch situation between the mesozooplankton and the phytoplankton spring bloom in 2002. (uit.no)
Ecological1
- While a return to good ecological status does not seem feasible in the short term, it seems that these ecosystems were in an unstable intermediate state requiring continued efforts to reduce nutrient inputs. (ifremer.fr)
Growth6
- Nutrient additions yielded classic growth curves after 7 to 12 d of incubation. (cmich.edu)
- Phytoplankton growth can therefore be simultaneously limited by the availability of both iron and light. (nature.com)
- experiments had also demonstrated that literally pouring iron into seawater encouraged phytoplankton growth. (popsci.com)
- Like whale feces, the "whale pump" and "conveyor belt" fuel the growth of phytoplankton. (clf.org)
- Slow nutrient supply delivery is a result of the limited water exchange, which leads to a lack of nutrients for phytoplankton growth. (scuba-do.com)
- The limited water exchange in the Mediterranean Sea has significant implications for nutrient supply and the growth of phytoplankton. (scuba-do.com)
Sunlight1
- Most phytoplankton need both sunlight and nutrients from deep in the ocean. (nasa.gov)
Organic1
- The biological pump creates a nutrient gradient, or nutricline, in LNLC regions by exporting organic matter from the surface ocean to the deep ocean before that organic matter (OM) can be respired in the photic zone, thus also exporting the OM-associated nutrients from the photic zone. (wikipedia.org)
Oceans2
- Viruses are the most abundant organism in the world's oceans, and it is thought that all phytoplankton species are susceptible to infection. (eurekalert.org)
- It may be that smaller-celled phytoplankton are becoming more dominant, occupying the oceans at a higher concentration. (newscientist.com)
Seasonal1
- We will investigate nutrient supply (WP2) and light availability (WP1) linked to sea ice affect the magnitude, timing, and composition of phytoplankton production, and the role of seasonal physiological plasticity. (sams.ac.uk)
Species2
- Physical processes limit nutrient availability in LNLC regions, which favors nutrient recycling in the photic zone and selects for smaller phytoplankton species. (wikipedia.org)
- The effects of nonpoint source nutrients on estuaries can be difficult to pinpoint, with researchers often using indicator species, monitoring, and models to detect influence and change. (mdpi.com)
Patterns1
- However, nutrient limitac tion patterns remain unchanged in the majority of the mainstem, suggesting that nutrient loads should be further reduced to achieve a less nutrient-saturated ecosystem. (potomacriver.org)
Estuarine1
- Conceptual diagram of alternate states for phytoplankton in the estuarine surface mixed layer (from Buchanan 2020). (potomacriver.org)
Changes in nutrient2
- The phytoplankton compartment is particularly reactive to changes in nutrient concentration and is used as a quality indicator. (ifremer.fr)
- Using a simple numerical approach, the response of emblematic harmful taxa from the eastern English Channel and southern North Sea to changes in nutrient inputs was studied. (ifremer.fr)
Minerals and nutrients1
- Through this pattern of diving and surfacing, they move vital minerals and nutrients up and down the water column . (clf.org)
Isotopic1
- Stable isotopes of N ( 14 N, 15 N) are often used to trace the sources of N fueling aquatic primary production, but effective use of this approach requires obtaining a reliable isotopic ratio for phytoplankton. (usgs.gov)
High nutrient1
- Cullen, J. T. Hypotheses to explain high nutrient conditions in the open sea. (nature.com)
Feast2
- That gyre creates a Thanksgiving feast for phytoplankton. (scienceblog.com)
- When seagrasses decompose, worms, sea cucumbers and phytoplankton feast on the nutrients. (mongabay.com)
Diatoms3
- Diatoms dominated the phytoplankton assemblage. (uit.no)
- Dinoflagellates and diatoms are two different types of phytoplankton and are most often found in salt water or brackish water, including in estuaries. (cdc.gov)
- In this "Photo Guide for Northern European Seas" we describe the major phytoplankton groups, diatoms and dinoflagellates with additional information on ciliates and smaller flagellates. (pfeil-verlag.de)
Productivity2
- Primary productivity is therefore controlled by the availability of the limiting nutrient (Liebig's law of the minimum). (wikipedia.org)
- Moreover, the surface ocean is also supplied with vital nutrients by this ocean circulation which helps in fuelling global ocean productivity. (worldatlas.com)
Seas3
- With that data in hand, the authors turned to satellite measurements of the seas over that same time period: specifically, observations of ocean color, which could indicate phytoplankton. (popsci.com)
- As mentioned, the increase in these nutrients within the seas, causes certain plants and algaes to grow. (worldatlas.com)
- Over the past two decades, vast swathes of the seas have subtly changed hue, as phytoplankton communities respond to the impacts of rising global temperatures. (newscientist.com)
Consume1
- The ocean catchment concept is introduced as a basis for examining the spatial scale of pelagic processes influencing benthic systems: every day, Ningaloo may completely consume the phytoplankton over 87 km2 of LC water, compared to only 20 km2 of NC water. (ningaloo-atlas.org.au)
Runoff1
- Water runoff through soil that contains high levels of these nutrients wash them into the sea, while those that are expelled into the air, can fall to the surface, or sea level in the form of rain. (worldatlas.com)
Impacts1
Water clarity1
- Favorable and adverse states of the phytoplankton community are apparent, separated primarily by water clarity (light). (potomacriver.org)
Ecosystem1
- Here the significance of the microbial loop in influencing nutrient supply to phytoplankton has been investigated in Lake Kinneret (Israel) using a coupled hydrodynamic-ecosystem model. (copernicus.org)
Marine7
- JOYCE: Rabalais, who's with the Louisiana University's Marine Consortium, says the source of most of the nutrients in the dead zone is clear: fertilizer on Midwestern farms. (npr.org)
- They considered only the case of lytic viruses, which are the commonest type of virus infecting marine phytoplankton. (eurekalert.org)
- Without these processes, nutrients would sink and settle on the ocean floor - out of reach of other important marine life. (clf.org)
- This exposure to the sun, in turn, promotes the livelihood of phytoplankton and other marine organisms. (nasa.gov)
- This scarcity of food for marine organisms, notably phytoplankton, prevents the water from turning green and murky. (scuba-do.com)
- Grafic of the nutrient cycle in the marine realm. (worldatlas.com)
- Sinking rates and phenotypic plasticity among marine phytoplankton in a warmer world. (lu.se)
Clarity2
- Unlike other bodies of water, the Mediterranean's exceptional clarity arises from limited water exchange and a lack of nutrient supply. (scuba-do.com)
- The slow water exchange and limited nutrient supply result in the clarity of the Mediterranean Sea, making it ideal for underwater photography and scuba diving. (scuba-do.com)