When you have the scientific name of a plant, you should easily find information on it with internet search engines, such as google.com. Posidonia oceanica or neptunegrass is a type of seagrass. It is an important native flowering plant forming vast underwater meadows in the Mediterranean Sea. It provides habitat, oxygen, and food for many other organisms. It can grow at a water depth of up to 40 meters. It is endangered by pollution, construction, drag netting, and an introduced algae, Caulerpa taxifolia. Neptunegrass has rhizomes, roots, ribbonlike leaves up to 1.5 meters long, and ball-like fruit. Its fruit and leaves often wash up on beaches. The fruit have air spaces allowing them to float. References Natural habitat (Posidonia oceanica L. Del.) Neptunegrass (Posidonia oceanica) Posidonia oceanica Simulation Posidonia oceanica photo Posidonia oceanica fruit "balls" ...
With this aim, the density of Paracentrotus lividus was estimated at six different locations around the Gulf of Alghero (Northwestern Sardinia, Italy). At each location, two areas were considered and within each area the number of P. lividus individuals was counted in 10 plots of dimensions 1 × 1 m each. The abundance of P. lividus and Sarpa salpa grazing marks was estimated on two shoots harvested at random in each plot. The number of P. lividus individuals varied greatly among the locations and between areas within each location. A sigmoid function was found to better describe the relation between P. lividus density and the number of its grazing marks. The distance class-frequency distribution of P. lividus grazing marks from the leaf base showed that this herbivore affected the length of the Posidonia oceanica leaf for about 700 mm, and that the attacks were concentrated at the lower portion of the leaf near the base. Conversely, a larger number of the S. salpa grazing bites were more ...
The increasing use of molecular tools to study populations of clonal organisms leads us to question whether the low polymorphism found in many studies reflects limited genetic diversity in populations or the limitations of the markers used. Here we used microsatellite datasets for two sea grass species to provide a combinatory statistic, combined with a likelihood approach to estimate the probability of identical multilocus genotypes (MLGs) to be shared by distinct individuals, in order to ascertain the efficiency of the markers used and to optimize cost-efficiently the choice of markers to use for deriving unbiased estimates of genetic diversity. These results strongly indicate that conclusions from studies on clonal organisms derived using markers showing low polymorphism, including microsatellites, should be reassessed using appropriate polymorphic markers.
Poster (2009, November 27). Posidonia oceanica is a seagrass endemic to the Mediterranean Sea, and is able to form large monospecific areas, called meadows. These meadows are critical features of the Mediterranean coastal zones, and ... [more ▼]. Posidonia oceanica is a seagrass endemic to the Mediterranean Sea, and is able to form large monospecific areas, called meadows. These meadows are critical features of the Mediterranean coastal zones, and are of great ecologic and economic importance. Posidonia oceanica meadows shelter high biomasses and biodiversities of amphipod crustaceans. In other temperate meadows, such as Atlantic Zostera marina meadows, the amphipods play an important part in the functioning of the ecosystem, notably in organic matter transfers from producers to higher level consumers. However, the situation in Posidonia oceanica meadows remains unclear, due to the lack of precise studies, and little is known about the trophic ecology of amphipods. In this context, our ...
Temporal variability in species composition and abundance may enhance coexistence in ecological communities, especially when subjected to strong seasonal patterns. Species distribution through time may be related to many factors, such as changes in the structure and functioning of preferred habitats, variations in ecological interactions or asynchronous patterns in species life cycles. Here, data from a one-year survey of amphipod assemblages from a nearly undisturbed Posidonia oceanica meadow are used to investigate the seasonal patterns in species abundance and identity. Our results highlight the presence of a core group of species inhabiting the meadow throughout the year, although an in depth analysis reveals three differentiated seasonal assemblages corresponding to autumn, winter, and a warm season clustering of both spring and summer. The observed patterns suggest the interplay between different mechanisms drives the coexistence of amphipods over the whole year, including niche partitioning,
Poster (2012, August 20). In the Mediterranean Sea, Posidonia oceanica meadows produce a huge amount of detritus, evaluated up to 300 to 2000 g dry wt m-2 yr-1. This litter is mainly composed of dead leaves but also of uprooted P ... [more ▼]. In the Mediterranean Sea, Posidonia oceanica meadows produce a huge amount of detritus, evaluated up to 300 to 2000 g dry wt m-2 yr-1. This litter is mainly composed of dead leaves but also of uprooted P.oceanica shoots and drift macro-algae from adjacent rocky bottoms. Although rich in refractory materials (lignin) and poor in P and N, these underwater accumulations of leaves are colonised by fungi, micro-algae (like diatoms), bacteria, but also by micro and macrofauna assemblages. These organisms could play an important role in leaf litter degradation and enrichment, but also in energy and carbon transfer from P.oceanica to higher trophic levels in adjacent coastal ecosystems. In this study we focus on the vagile macro-fauna (invertebrates with a size ...
Seagrass are among the most important natural carbon sinks on Earth with Posidonia oceanica (Mediterranean Sea) considered as the most relevant species. Yet, the number of direct measurements of organic carbon burial rates in P. oceanica is still scarce and the effect of local environmental factors remains largely unexplored. In addition, P. oceanica meadows are declining due to the increase in anthropogenic pressure in coastal areas during the last century. The aim of this study is to assess the recent carbon sink capacity of P. oceanica and particularly the effect of human pressure and two environmental factors, water depth and exposure to wave energy (based on a fetch index), on the carbon burial rate since 1900. We conducted an extensive survey of sediment cores in meadows distributed across a gradient of depth, fetch, and human pressure around The Balearic Islands. Sediment and carbon accumulation rates were obtained from 210Pb concentrations profiles. Top-30 centimeters carbon stocks (6.1 ...
In this study, we investigated Cd, Cr, Cu, Pb, and Zn in the seagrass Posidonia oceanica (L.) Delile leaves and in the brown algae Cystoseira sp. sampled along a 280-km transect in the Tyrrhenian Sea, from the Ustica to Linosa Islands (Sicily, Italy) with the aim to determine their control charts (baseline levels). By applying the Johnsons (Biometrika 36:149-175, 1949) probabilistic method, we de ...
Araceae are herbs with leaves that are usually divided into a petiole and expanded blade. They have a distinctive inflorescence of a more or less petal-like spathe plus a spadix made up of densely-packed, sessile, ebracteate flowers - in many taxa the spadix has a large, terminal, sterile part. The fruit is a berry. Evolution: Divergence & Distribution. Mayoa pollen grains that look very like those of Monsteroideae have been found in Early Cretaceous deposits of the late Barremian-early Aptian of some 120-110 Ma in Portugal (Friis et al. 2004; see also Hesse & Zetter 2007). Although the identity of some of these grains has been questioned (Hoffmann & Zetter 2010), macrofossils apparently of staminate flowers belonging to Aroideae (a decidedly non-basal clade) have been discovered in slightly younger deposits ca 112 Ma and also in Portugal (Friis et al. 2010: c.f. pollen; Friis et al. 2011; Isles et al. 2015). Thus the fossil record would suggest that all eight subfamilies of Araceae may have ...
The sole species of Butomaceae (the flowering rush family) is the aquatic Eurasian plant Butomus umbellatus, which is listed as moderately invasive in New York. Its first appearance in North America was in the St. Laurence River in 1897, and it is now a problem weed in the Great Lakes.[1]. Studies by L. C. Anderson in 1974 found that the naturalized North American Butomus populations had separate sources. Those east of Niagara Falls, introduced near the St. Lawernce River, originated in eastern Asia. Those west of the Falls were introduced near Detroit, and were from western Euraasia. R. L. Stuckey, in 1994, recognized these two groups as separate species, with B. umbellatus, from western Eurasia, found west of the Falls, and B. junceus, from eastern Asia, found east of the falls.[2] B. junceus is not widely accepted as a separate species at this time, but if it were to be accepted, New Yorks populations would probably be considered to be B. junceus.[3][4]. ...
Posidonia oceanica (Neptune grass) grows at depths varying from 5 to 40-50meters, depending on water clarity. It is endemic to the Mediterranean Sea and forms extensive underwater meadows which can be considered as the Mediterranean underwater equivalent of the tropical forests in land. It sustains a large variety of commercially important species. Both the meadows & the dead leaves of P. oceanica that one can find in the shore are protecting the coastline against erosion. It is particularly sensitive to organic pollution and to bottom trawling. Τhe protection and conservation of P. oceanica habitat is a top priority (EU Habitat Directive 92/43) and everyones responsibility. ...
The Poaceae (cried Gramineae or true grasses an aw) is a lairge an nearly ubiquitous faimily o monocotyledonous flouerin plants. Wi mair nor 10,000 domesticatit an wild species, the Poaceae represents the fift-lairgest plant faimily, follaein the Orchidaceae, Asteraceae, Fabaceae, an Rubiaceae.[2] Tho commonly cried "gresses", seagresses, rashes, an segs faw ootside this faimily. The rashes an segs is sib tae the Poaceae, bein members o the order Poales, but the seagresses is members o order Alismatales. Gresslands is estimated tae compone 20% o the vegetation kiver o the Yird. Poaceae leeves in mony ither habitats, includin weetlands, wids, an tundra. Domestication o poaceous cereal craps sic as maize (corn), wheat, rice, baurley, an millet lies at the foondation o sedentary leevin an ceevilization aroond the warld, an the Poaceae still constitutes the maist economically important plant faimily in modren times, providin forage, biggin materials (bamboo, thack) an fuel (ethanol), as weel as ...
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2 Dokuz Eylül University, Faculty of Sciences, Department of Chemistry, Division of Biochemistry, Kaynaklar Campus, İzmir, Turkey DOI : 10.4194/1303-2712-v17_6_50 Viewed : 262 - Downloaded : 217 Importance of the artificial intelligence in the chemical processes has been increased in the recent studies. Although biosorption is widely studied topic in chemistry, modelling of biosorption data is based on very old equations. However, use of artificial intelligence in the biosorption based studies can give important clues to researchers. For this purpose, the biosorption of tetracycline by using Posidonia oceanica from the Mediterranean Sea was studied in this study. According to classical evaluation, the data were well in line with pseudo-second order kinetic and Langmuirs isotherm. In the artificial neural network modelling, the best back propagation algorithm, optimum number of hidden neuron and optimum training:validation:testing ratio were found as Bayesian Regulation, 16 and 70:10:20, ...
The Protected Area is characterised by a variety of habitats, of European interest including sand dunes, Posidonia oceanica beds, the critically endangered Sea daffodil, submerged reefs, as well as hundreds of species of flora and fauna, some of which are of great importance. ...
Highly magnified image (100,000 times magnification) showing a metal injected carbonate fossil in Posidonia Shale. The bright part is the metal which indicates the connected porosity. Width of the picture is 3 µm, see Klaver et al., (2016, http://dx.doi.org/10.1016/j.coal.2016.03.003) for further information. ...
The maintenance of mobile DNA sequences in clonal organisms has been seen as a paradox. If selfish mobile sequences spread through genomes only by overreplication in transposition, then sexuality is necessary for their spread through populations. The persistence of bacterial transposable elements without obvious dominant selectable markers has previously been explained by horizontal transfer. However, advantageous insertions of mobile DNAs are known in bacteria. Here we model maintenance of an otherwise selfish mobile DNA element in a clonal species in which selection for null mutations occurs during one of two temporally alternating environments. Large areas of parameter space permit maintenance of mobile DNAs where, without selection, they would have gone extinct. Horizontal transfer diminishes, rather than enhances, mean copy number. In finite populations, effective population sizes are greatly reduced by selective sweeps, and mean copy number can be increased as the reduced variance in copy ...
Motivation: Sequencing projects increasingly target samples from non-clonal sources. In particular, metagenomics has enabled scientists to begin to characterize the structure of microbial communities. The software tools developed for assembling and analyzing sequencing data for clonal organisms are, however, unable to adequately process data derived from non-clonal sources.Results: We present a new scaffolder, Bambus 2, to address some of the challenges encountered when analyzing metagenomes. Our approach relies on a combination of a novel method for detecting genomic repeats and algorithms that analyze assembly graphs to identify biologically meaningful genomic variants. We compare our software to current assemblers using simulated and real data. We demonstrate that the repeat detection algorithms have higher sensitivity than current approaches without sacrificing specificity. In metagenomic datasets, the scaffolder avoids false joins between distantly related organisms while obtaining ...
genomes of accumulated deleterious changes (Muller, 1964) and to create or spread bene locial combinations of mutations in an efficient manner (Fisher, 1930;Muller, 1932), two processes which are not available to clonal organisms. Two distinct but not mutually exclusive types of genetic exchange operate in RNA viruses. The first, reassortment ...
genomes of accumulated deleterious changes (Muller, 1964) and to create or spread bene locial combinations of mutations in an efficient manner (Fisher, 1930;Muller, 1932), two processes which are not available to clonal organisms. Two distinct but not mutually exclusive types of genetic exchange operate in RNA viruses. The first, reassortment ...
Hello, I am wondering if anyone here can help me to find a clear up to date phylogeny and tree of early diverging/basal monocots? From Acorus- Alismatales. Kind regards, Mark ...
Male Jayakars seahorse camouflaged in seagrass habitat - View amazing Jayakars seahorse photos - Hippocampus jayakari - on Arkive
Kirk, Paul M. (2009). Haloguignardia oceanica (Ferd. & Winge) Kohlm., 1971. In: Index Fungorum Partnership (2017). Index Fungorum. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=177917 on 2017-12- ...
Looking for Hydrocharitales? Find out information about Hydrocharitales. A monofamilial order of aquatic monocotyledonous plants in the subclass Alismatidae Explanation of Hydrocharitales
Odyssey Marine Exploration, Inc. (Nasdaq:OMEX), a pioneer in the field of deep-ocean exploration, provides an update on the Environmental
Obesity is a serious health concern which triggers other ailments like heart diseases, diabetes, joint ailments, sleep apnea, etc. Obesity is troublesome and its cause goes down to a low nutrient diet and lack of physical activity. For some, it is genetic and hard to control while others develop it with age. Many children become obese while growing up and this is a result of lack of adult guidance during childhood and adolescent years.. Therefore, to keep your child away from this life-threatening medical condition, you need to take steps rather than ignoring the slow transition of your kids towards obesity.. Keep your kids body regulated by incorporating these simple tips:. 1) Inculcate in your kids a habit of eating salad and having some water right before their meals. The good part of this activity is that half their hunger will be fulfilled in eating fibre rich fruits and veggies and having water will keep them hydrated and promote to eat less.. 2) Foster a habit of eating in small ...
Growth and Vegetative Development. Gunawardena, Arunika N. [1], Voicu, Laura [2], Dengler, Nancy G. [2]. Are caspases and ethylene involved in PCD-remodeling of lace place leaves?. The lace plant, Aponogeton madagascariensis, uses programmed cell death (PCD) during leaf development in a quite different way than other plants. PCD remodels the leaves of the lace plant, forming a lattice pattern of equidistantly-positioned perforations at a set time in development. Therefore, lace plant is an attractive model system for studying developmentally-regulated PCD in plants. In this system, discrete populations of cells undergo a disruption of cytoplasmic streaming and loss of anthocyanin, indicators of tonoplast rupture, as well as DNA degradation and other cytoplasmic changes such as formation of vesicles, shrinkage and invagination of the membrane, and degradation of other organelles. Concurrently, adjacent cells are unaffected by these processes and develop normally. Unlike many other forms of plant ...
Perforation formation in Aponogeton madagascariensis (Mirb.) H.Bruggen (lace plant) is an excellent model for studying developmentally regulated programmed cell death (PCD). In this study, we isolated and identified two lace plant vacuolar processing enzymes (VPEs) and investigated their involvement in PCD and throughout leaf development. Lace plant VPE transcript levels were determined during sev ...
BACKGROUND: Spirodela polyrhiza is a species of the order Alismatales, which represent the basal lineage of monocots with more ancestral features than the Poales. Its complete sequence of the mitochondrial (mt) genome could provide clues for the understanding of the evolution of mt genomes in plant. METHODS: Spirodela polyrhiza mt genome was sequenced from total genomic DNA without physical separation of chloroplast and nuclear DNA using the SOLiD platform. Using a genome copy number sensitive assembly algorithm, the mt genome was successfully assembled. Gap closure and accuracy was determined with PCR products sequenced with the dideoxy method. CONCLUSIONS: This is the most compact monocot mitochondrial genome with 228,493 bp. A total of 57 genes encode 35 known proteins, 3 ribosomal RNAs, and 19 tRNAs that recognize 15 amino acids. There are about 600 RNA editing sites predicted and three lineage specific protein-coding-gene losses. The mitochondrial genes, pseudogenes, and other hypothetical ...
BACKGROUND: Spirodela polyrhiza is a species of the order Alismatales, which represent the basal lineage of monocots with more ancestral features than the Poales. Its complete sequence of the mitochondrial (mt) genome could provide clues for the understanding of the evolution of mt genomes in plant. METHODS: Spirodela polyrhiza mt genome was sequenced from total genomic DNA without physical separation of chloroplast and nuclear DNA using the SOLiD platform. Using a genome copy number sensitive assembly algorithm, the mt genome was successfully assembled. Gap closure and accuracy was determined with PCR products sequenced with the dideoxy method. CONCLUSIONS: This is the most compact monocot mitochondrial genome with 228,493 bp. A total of 57 genes encode 35 known proteins, 3 ribosomal RNAs, and 19 tRNAs that recognize 15 amino acids. There are about 600 RNA editing sites predicted and three lineage specific protein-coding-gene losses. The mitochondrial genes, pseudogenes, and other hypothetical ...
r - i J ,I _.; . b :I .. - ! klogical Repal 85(7.25): ;* , September 1989 THE ECOLOGY OF THE SEAGRASS MEADOWS OF THE WEST COAST OF FLORIDA: A Community Profile a Minerals Management Service and Fish and Wildlife Service U.S. Department of the Interior Biological Report 85(7.25) September 1989 THE ECOLOGY OF THE SEAGRASS MEADOWS OF THE WEST COAST OF FLORIDA: A COMMUNITY PROFILE Joseph C. Zieman Rita T. Zieman Department of Environmental Sciences University of Virginia Charlottesville, VA 22903 Project Officer Edward Pendleton U.S. Fish and Wildlife Service National Wetlands Research Center 1010 Gause Boulevard Slidell, LA 70458 Conducted in Cooperation With Minerals Management Service Gulf of Mexico U.S. Department of the Interior Fish and Wildlife Service Research and Development Washington, D C 20240 DISCLAIMER The opinions and recommendations expressed in this report are those of the authors a n d d o n o t n e c e s s a r i l y r e f l e c t t h e v i e w s o f t h e U . S . F i s h a n d ...
r - i J ,I _.; . b :I .. - ! klogical Repal 85(7.25): ;* , September 1989 THE ECOLOGY OF THE SEAGRASS MEADOWS OF THE WEST COAST OF FLORIDA: A Community Profile a Minerals Management Service and Fish and Wildlife Service U.S. Department of the Interior Biological Report 85(7.25) September 1989 THE ECOLOGY OF THE SEAGRASS MEADOWS OF THE WEST COAST OF FLORIDA: A COMMUNITY PROFILE Joseph C. Zieman Rita T. Zieman Department of Environmental Sciences University of Virginia Charlottesville, VA 22903 Project Officer Edward Pendleton U.S. Fish and Wildlife Service National Wetlands Research Center 1010 Gause Boulevard Slidell, LA 70458 Conducted in Cooperation With Minerals Management Service Gulf of Mexico U.S. Department of the Interior Fish and Wildlife Service Research and Development Washington, D C 20240 DISCLAIMER The opinions and recommendations expressed in this report are those of the authors a n d d o n o t n e c e s s a r i l y r e f l e c t t h e v i e w s o f t h e U . S . F i s h a n d ...
Molecular dating was performed using a Bayesian method (Beast 1.4.8; Drummond & Rambaut 2007; see electronic supplementary material for methodological details). Two to three calibration points were specified. In each case, a normal prior was used, and its mean and standard deviations were set in such a way that 95 per cent confidence intervals corresponded to the upper and lower bounds of each calibration point. In this way, uncertainty concerning the exact dates of the calibration points could be accounted for. The age of the oldest syngnathid fossils (Monte Bolca formation, Early Eocene) (Patterson 1993; Bellwood 1996) was used as the first calibration point. These fossils date from the boundary between the Ypresian and Lutetian ages (approx. 48-50 Myr). To account for the possibility that they are younger than the origin of the family, we specified the beginning of the Eocene as an upper bound (mean = 52.2, s.d. = 2.3, 95% confidence interval: 48-56). The other two calibration points were ...
Seagrasses play a vital role in the survival of many marine animals, which use their meadows as habitat and feeding areas. But environmental pollution, such heavy metal, is contributing to the decline of seagrasses in some areas.. PhD candidate, Ms Nasim Shah Mohammadi from the UTS Climate Change Cluster (C3), is investigating Zostera mulleri, an endangered species of seagrass native to the southern half of Australia, and found mostly in the protected waters of NSW.. "My study aims to estimate the gene diversity and resilience of the remaining Z. mulleri so as to better understand the decline of seagrass meadows in Australia," Ms Shah Mohammadi said.. All seagrasses, including Zostera muuleri, are crucial to biodiversity as they contribute organic matter to food chains and help maintain water quality by stabilising sediment.. Ms Shah Mohammadi was recently awarded a $1000 grant from the Linnean Society of NSW, which will help further her research into the molecular investigation of Z. ...
Natural disturbances, such as grazing, storms, ice-scouring, and desiccation, are an inherent part of seagrass ecosystem dynamics. Seagrasses display an extraordinarily high degree of phenotypic plasticity, adapting rapidly to changing environmental conditions.. Seagrasses are in global decline, with some 30,000 km2 (12,000 sq mi) lost during recent decades. The main cause is human disturbance, most notably eutrophication, mechanical destruction of habitat, and overfishing. Excessive input of nutrients (nitrogen, phosphorus) is directly toxic to seagrasses, but most importantly, it stimulates the growth of epiphytic and free-floating macro- and micro-algae. This weakens the sunlight, reducing the photosynthesis that nourishes the seagrass and the primary production results.. Decaying seagrass leaves and algae fuels increasing algal blooms, resulting in a positive feedback. This can cause a complete regime shift from seagrass to algal dominance. Accumulating evidence also suggests that ...
Algae live inside marine animals. Coral tissues host several million algae per square inch, and these marine plants provide 90 percent of nutrients needed by the coral. The symbiotic relationship is based on a cycle of coral enzymes which cause algae to release carbohydrates and algae to receive nitrogen from coral waste. Algae are shaded from intense sunlight by coral pigments ...
APG IV Classification: Domain: Eukaryota • (unranked): Archaeplastida • Regnum: Plantae • Cladus: angiosperms • Cladus: monocots • Ordo: Alismatales • Familia: Potamogetonaceae • Genus: Potamogeton • Species: Potamogeton spirillus ...
Although often overlooked, seagrasses provide coastal zones with a number of ecosystem goods and services. Seagrasses are considered ecosystem engineers.[6][3][2] This means that the plants alter the ecosystem around them. This adjusting occurs in both physical and chemical forms. Many seagrass species produce an extensive underground network of roots and rhizome which stabilizes sediment and reduces coastal erosion.[7] This system also assists in oxygenating the sediment, providing a hospitable environment for sediment-dwelling organisms.[8] Seagrasses also enhance water quality by stabilizing heavy metals, pollutants, and excess nutrients[9][3][2] The long blades of seagrasses slow the movement of water which reduces wave energy and offers further protection against coastal erosion and storm surge. Furthermore, because seagrasses are underwater plants, they produce significant amounts of oxygen which oxygenate the water column. These meadows account for more than 10% of the oceans total ...
Wells, F.E., McDonald, J.I. and Huisman, J.M. (2009) Introduced Marine Species in Western Australia. Department of Fisheries, Perth, Australia. Huisman, J.M., Abbott, I.A. and Smith, C.M. (2007) Hawaiian reef plants. University of Hawaii Sea Grant College Program, Honolulu, Hawaii. Huisman, J.M. (2006) Algae of Australia: Nemaliales. CSIRO Publishing, Collingwood, Victoria. Huisman, J., Phillips, J. and Parker, C. (2006) Marine plants of the Perth region. Department of Environment and Conservation, Kensington, Australia. Huisman, J. and Parker, C. (2005) How to collect and document marine plants. Western Australian Herbarium. Huisman, J.M. (2000) Marine plants of Australia. University of Western Australia Press in association with Australian Biological Resources Study, Nedlands, Australia. ...
Field and laboratory experiments were performed to investigate the palatability to predatory fishes of organic extracts of the Caribbean ascidian Didemnum conchyliatum. This tan-colored compound ascidian grows as an epibiont on seagrass blades. A dichloromethane/methanol extract of the ascidian incorporated into carrageenan food strips at the same volumetric concentration as the extract occurred in the ascidian tissues deterred feeding of a natural assemblage of consumers in the same seagrass beds from which the ascidians were collected. Bioassay-directed fractionation of this extract revealed that the deterrent property was restricted to fractions containing novel indole-maleimide-imidazole alkaloids, didemnimides A to D. Laboratory assays of purified metabolites revealed that didemnimides C and D deterred feeding by a generalist predatory reef fish, but that didemnimides A and B were not deterrent. Only didemnimide D deterred feeding in the field; neither didemnimide C nor the fraction ...
Microenvironmental Ecology of Seagrasses:. My research has so far focussed on how seagrasses alter the biogeochemical processes and chemical conditions in their rhizosphere via release of O2 and DOC to e.g. detoxify the surrounding sediment and mobilize essential nutrients. Future research interest are aiming at resolving important seagrass/microbe interactions in the seagrass rhizosphere and leaf microenvironment to elucidate potential mutually beneficial relationships between the seagrass host and their microbial community. For further information about my research please visit: elgetti.wordpress.com. ...
The majority of the stored carbon is in the soil anchoring seagrasses, where it can be several meters deep and could be storing carbon for thousands of years.... | Vertical Farm - Food Factory
Due to widespread and continuing seagrass loss, restoration attempts occur worldwide. This article presents a geospatial modeling technique that ranks the suitability of sites for restoration based on light availability and boating activity, two factors cited in global studies of seagrass loss and restoration failures. The model presented here was created for Estero Bay, Florida and is a predictive model of light availability and boating pressure to aid seagrass restoration efforts. The model is adaptive and can be parameterized for different locations and updated as additional data is collected and knowledge of how factors impact seagrass improves. Light data used for model development were collected over one year from 50 sites throughout the bay. Coupled with high resolution bathymetric data, bottom mean light availability was predicted throughout the bay. Data collection throughout the year also allowed for prediction of light variability at sites, a possible indicator of seagrass growth and ...
Lace triangle bralette that can be paired with a sheer or loose tops to show off the color and lace, or wear under a tank or dress for added color. Featuring scalloped edges and a semi sheer lace shell. Has double adjustable spaghetti straps and a single hook and eye bra closure. Lined / no padding. Better suited for smaller busts. Final Sale Scalloped Lace Bralette by Twist. Clothing - Lingerie & Sleepwear - Bras Santa Monica, Los Angeles, California
B12 -- an essential vitamin for land-dwelling animals, including humans -- also turns out to be an essential ingredient for growing marine plants that are critical to the ocean food web and Earths climate, scientists have found.
|p|Aquaculture, the cultivation of freshwater and marine plants and animals, is one of the fastest-growing segments of U.S. agriculture, with sales tripling since 1987 and doubling since 1992. The latest data on the entire U.S. aquaculture industry is the
Author: Sinyanya, Kolisa Yola Date: 2016 The Core Cape Sub-region is well known for its low nutrient, low pH soils which harbour a variety of alpha and beta- Proteobacteria associated with a diversity of legume species. Soil bacteria are important for ecological processes and are ... Read more ...
Iemanya Oceanica is dedicated to the worldwide conservation of sharks, rays and their habitats. We achieve our mission through research, environmental education and the promotion of sustainable...
6 yard/ 5.48 metres long. This laces are made up from 99% polyester and 1% acetone. All Vollers Corsets already come with laces, however if you would like to personalise your corset changing the laces is a great place to start
Our standard lengths in flat and round laces are 68cm, 91cm, 114cm, 137cm, 160cm, 182cm, 213cm, 243cm, 274cm, 304cm and 335cm - these can be entered (along with a colour if required) in the search box in our store to find laces of that length ...