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428 results for “zooplankton”
Figure 3 in The zooplankton composition of Lake Ladik (Samsun, Turkey)
Figure 3. Distribution of zooplankton groups in Lake Ladik during the research period.
Figure 1 in The zooplankton composition of Lake Ladik (Samsun, Turkey)
Figure 1. The study area and sampling stations.
Figure 3 in Diversity of zooplankton in municipal wastewater-contaminated urban pond ecosystems of the lower Gangetic plains
Figure 3. Proportional abundance of different representative groups of zooplankton at study sites.
Figure 1 in Diversity of zooplankton in municipal wastewater-contaminated urban pond ecosystems of the lower Gangetic plains
Figure 1. Map showing the study sites (Site 1–5) within Hooghly-Chinsurah Municipality.
Figure 2 in Diversity of zooplankton in municipal wastewater-contaminated urban pond ecosystems of the lower Gangetic plains
Figure 2. Abundance of different representative groups of zooplankton at study sites.
Figure 1 in Unusual winter zooplankton bloom in the open southern Adriatic Sea
Figure 1. Map of investigated area with noted stations over 2 investigated transects.
Figure 1 in Impacts of environmental factors on zooplankton taxonomic diversity in coastal lagoons in Turkey
Figure 1. The location of the Dalyan and Arapçiftliği lagoons.
Figure 1 in Does the location of coastal brackish waters determine diversity and abundance of zooplankton assemblages?
Figure 1. Location of the research stations on the Vistula Lagoon and Lake Łebsko.
Figure 5 in Does the location of coastal brackish waters determine diversity and abundance of zooplankton assemblages?
Figure 5. Biomass (mg dm–3) of zooplankton in the Vistula Lagoon and Lake Łebsko in 2010–2011.
Figure. Study area and wells. in Investigation of zooplankton fauna in water wells of Yayladağı District (Hatay, Turkey)
Figure. Study area and wells.
Figure 2 in Assessment of the zooplankton community structure of the coastal Uzungöl Lagoon (Kızılırmak Delta, Turkey) based on community indices and physicochemical parameters
Figure 2. PCA results for environmental variables (number 1-5 represented sampling sites).
Census of Marine Life: Census of Marine Zooplankton
The Census of Marine Zooplankton includes scientists, students and others interested in zooplankton from around the world who are working toward a taxonomically comprehensive assessment of biodiversity of animal plankton throughout the world ocean, a field project of the Census of Marine Life (see www.CoML.org). We are studying the 7,000 described species in 15 phyla that comprise the holozooplankton – animals that drift with ocean currents throughout their lives. We are determining a DNA barcode (short DNA sequence for species identification) for each species. We sponsor activities such as taxonomic training workshops, sponsors student and researcher visits to CMarZ laboratories. We maintain a distributed data system of biological and physical information from CMarZ related cruises. We provide image galleries of living plankton. <p></p>http://www.cmarz.org/
The old and the large may suffer disproportionately during episodes of high temperature: evidence from a keystone zooplankton species
<p class="TBBody1">Widespread declines in the body size of aquatic ectotherms have been attributed to the poorer ability of older, larger individuals to tolerate high temperature. Here, using the thermal death time curve framework, we investigate the relationship between temperature tolerance and size/age by measuring the change in heat tolerance of the keystone zooplankton species <i>Daphnia magna</i> across a range of temperature intensities (and hence exposures of varying duration) among individuals that differed up to three-fold in size and thus varied in age also. Across the gradient of exposure temperatures, younger, smaller individuals were more tolerant than older, larger individuals. This suggests that the young and the small may be better equipped to withstand temperature challenges that are both intense/brief and more moderate/prolonged. Our study generalizes results obtained from more acute tolerance assays, providing physiological evidence consistent with the observed reductions in ectotherm body size as a response to warming in aquatic systems.</p>
Measuring the contribution of evolution to community trait structure in freshwater zooplankton
<p>There are currently few predictions about when evolutionary processes are likely to play an important role in structuring community features.Determining predictors that indicate when evolution is expected to impact ecological processes in natural landscapes can help researchers identify eco-evolutionary 'hotspots', where eco-evolutionary interactions are more likely to occur. Using data collected from a survey in freshwater cladoceran communities, landscape population genetic data, and phenotypic trait data measured in a common garden, we applied a Bayesian linear model to assess whether the impact of local trait evolution in the keystone species <i>Daphnia magna</i> on cladoceran community trait values could be predicted by population genetic properties (within-population genetic diversity, genetic distance among populations), ecological properties (Simpson's diversity, phenotypic divergence), or environmental divergence. We found that the impact of local trait evolution varied among communities. Moreover, community diversity and phenotypic divergence were found to be better predictors of the contribution of evolution to community trait values than environmental features or genetic properties of the evolving species. Our results thus indicate the importance of ecological context for the impact of evolution on community features. Our study also demonstrates one way to detect signatures of eco-evolutionary interactions in communities inhabiting heterogeneous landscapes using survey data of contemporary ecological and evolutionary structure.</p>
Data from: Alternative food sources interfere with removal of a fungal amphibian pathogen by zooplankton
<p>1. While the amphibian disease chytridiomycosis is causing ongoing population declines and biodiversity losses around the globe, efficient mitigation strategies are lacking. The free-living zoospores of the causative agents of this disease, the chytrid pathogens <i>Batrachochytrium dendrobatidis</i> (Bd) and <i>Batrachochytrium salamandrivorans</i> (Bsal), are a potential food source for filter-feeding micropredators as part of the aquatic food web. While consumption of zoospores can lower environmental pathogen loads, alternative food sources may interfere with pathogen removal rates.</p> <p>2. We compared the ability of three filter-feeding zooplankton species, i.e. the cladoceran <i>Daphnia magna</i>, the rotifer <i>Brachionus calyciflorus</i> and the ostracod <i>Heterocypris incongruens,</i> to remove Bd zoospores in water and investigated the effect of alternative food sources, i.e. the green algae <i>Pseudokirchneriella subcapitata</i> and <i>Chlorella vulgaris</i>, on zoospore ingestion by <i>D. magna</i>.</p> <p>3.<i> D. magna</i> was the only micropredator candidate that effectively removed Bd zoospores from its environment, with an average removal rate of 1,012 ± 542 GE ind.<sup>-1</sup> h<sup>-1</sup> within our test system. High concentrations (1x10<sup>5</sup> cells/mL) of large and easily ingestible <i>P. subcapitata</i> reduced pathogen removal rates, whereas the small and less edible <i>C. vulgaris</i> did not interfere with pathogen removal.</p> <p>4. <i>Synthesis and applications:</i> We showed that <i>Daphnia spp</i>., which are keystone species in all sorts of aquatic habitats worldwide, are promising target agents for biologically mitigating chytridiomycosis infections and how natural food sources may interfere with this strategy. We also suggest potential management actions for biological disease mitigation, aiming to optimize environmental conditions for these target filter-feeders, thereby reducing pathogen densities and eventually infection pressure in amphibian hosts. Examples of such management actions include, but are not limited to, removal of planktivorous fish, habitat restoration, nutrient control or agrochemical regulation in the vicinity of amphibian breeding ponds. Further studies, including field trials, are needed to confirm the effects of pathogen consumption on infection dynamics in natural situations and investigate the impact of intervention actions.</p>
Nanoplastics Modulate the Outcome of Zooplankton- Microparasite Interactions
<p>The updated version of the scripts are in is Github repo: https://github.com/StevetheGreek97/DaMN_Project.git</p>
Borealization of Arctic zooplankton—smaller and less fat zooplankton species in Disko Bay, Western Greenland
<p>Data for chlorophyll a and copepods in Figure 2 in the publication, doi: 10.1002/lno.11380</p>
Predicting the density of zooplankton subsidy to a stream with multiple impoundments using water quality parameters
<p>Damming a stream inserts a lentic system (an impoundment or reservoir) into a lotic system, changing downstream hydrological, biogeochemical, and ecological processes. One such ecological effect of damming is to create a resource subsidy of easily captured and consumed zooplankton, which are preyed upon by filter-feeders and visual predators. The data included here were used to predict the density of lentic zooplankton subsidizing downstream habitats with water quality parameters as an alternative to microscopy. We also used this data to detect three different water quality regimes (high conductivity, high-CDOM, and a remainder) that are associated with differences in the density of zooplankton. This dataset is contained in two parts, both of which are focused on zooplankton density in the effluent of a series of tributary-impoundment reservoirs: 1) zooplankton density for a single summer season with water quality parameters and 2) zooplankton density for a series of three summers without water quality parameters.</p>
Fatty acid composition and content of seston, zooplankton, benthic invertebrates and fish in Lake Pyhäjärvi and Lake Köyliönjärvi
<p><span>We evaluated how cyanobacteria bloom, driven by agricultural eutrophication (defined as an increase in nutrients) or global warming, influence fatty acid profiles of phytoplankton, zooplankton (<em>Daphnia</em> + <em>Bosmina</em>), and fish (roach and perch) in eutrophic Lake Köyliöjärvi and mesotrophic Lake Pyhäjärvi. Regarding the nutritional value of food web components, we evaluated changes in the ω-3 and ω-6 polyunsaturated fatty acids (PUFA) of phytoplankton and consumers at different trophic levels. We report the fatty acid results as percentages (%) and content (µg FA mg<sup>-1</sup> C<sup>-1</sup>).</span></p>
Higher predation rate need not and did not lead to higher risk-induced trait responses in related zooplankton species
<p>Predators can directly affect prey populations both through predation (consumption of prey) and risk-induced trait responses (RITRs) that reduce predation risk but are often associated with a fitness cost. Thousands of studies make clear that RITRs (also termed anti-predator or defensive traits) including changes in behavior, morphology, and life history, are employed by numerous taxa across diverse ecological systems, and there is large variation in their magnitude. A natural goal is to elucidate the species and circumstances for which and to what magnitude RITRs are expected. A candidate hypothesis is that prey species that experience higher mortality from a predator will exhibit a higher RITR. This hypothesis is an intuitive extension of the fact that invulnerable animals are not expected to exhibit an RITR, while vulnerable species are. We present an example that clarifies why this relationship is not always expected and when it is expected. Other factors may influence the level of the RITR leading to the possibility that a positive relationship is not expected. We elucidate this problem using a mesocosm experiment with a fish-cladoceran system in which there is large variability in the predation rate on different cladoceran species. Results not only did not show a positive relationship but rather a negative trend between predation rate and the RITR. In fact, highly-preyed-upon taxa did not respond, while the least-preyed-upon taxa had the largest responses. These results clarify how the level of predation risk interacts with many factors to determine the RITR of prey.</p>
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.