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428 results for “zooplankton”
Fig. 4 in Spatio-temporal variation of the invasive copepod Oithona davisae in the zooplankton community of Kavala harbour Abstract
Fig. 4: Contribution (%) of Oithona davisae and Oithona nana to the rest of the adult copepods of the zooplankton community collected with the 50 and 200 μm net.
Fig. 5 in Spatial variation of summer microphytoplankton and zooplankton communities related to environmental parameters in the coastal area of Djerba Island (Tunisia, Eastern Mediterranean) Abstract
Fig. 5: Spatial variations of zooplankton abundance, zooplankton groups, dominant species, species richness and species diversity index along the west and east coasts of Djerba Island.
Fig. 2 in Spatial variation of summer microphytoplankton and zooplankton communities related to environmental parameters in the coastal area of Djerba Island (Tunisia, Eastern Mediterranean) Abstract
Fig. 2: Spatial variations of physical-chemical parameters: temperature, salinity, pH, Dissolved Oxygen and/ Depth Transparency along the western and eastern coasts of Djerba Island.
Figure 5 in Seasonal composition and population density of zooplankton in Lake Karaboğaz from the Kızılırmak Delta (Samsun, Turkey)
Figure 5. Canonical correspondence ordination of the zooplankton samples collected at 6 different stations and associated environmental parameters. Biplots of the species (occurrence frequency of>63%) and the environmental parameters. A = Coronatella rectangula, B = Chydorus sphaericus, C = Colurella adriatica, D = Keratella quadrata, E = Lecane closterocerca, F = Lecane luna, G = Notholca acuminata, H = Polyarthra vulgaris, J = Brachionus calyciflorus, K = Colurella obtusa, L = Cephalodella ventripes, and M = Lepadella quadricarinata.
Figure 2 in Unusual winter zooplankton bloom in the open southern Adriatic Sea
Figure 2. Maps of Chl concentrations (mg m–3) retrieved from MODIS Aqua17: February 2015; 18 February 2015; 19 February 2015; 20 February 2015; 03 March 2015; 06 March 2015.
Figure 3 in Impacts of environmental factors on zooplankton taxonomic diversity in coastal lagoons in Turkey
Figure 3. Zooplankton community parameters (Shannon–Wiener diversity, richness, Pielou's evenness) with standard error (±SE) during seasons in each lagoon. White represents Dalyan and black represents Arapçiftliği.
Figure 2 in Spatial structuring of zooplankton communities through partitioning of habitat and resources in the Bay of Bengal during spring intermonsoon
Figure 2. Vertical distribution of temperature, salinity, dissolved oxygen, and chlorophyll a concentrations in the central and western Bay of Bengal during spring intermonsoon season.
Figure 15 in Spatial structuring of zooplankton communities through partitioning of habitat and resources in the Bay of Bengal during spring intermonsoon
Figure 15. Microphotographs of copepods Pleuromamma indica (A), P. xiphias (B), Gaetanus kruppii (C), and Gaussia princeps (D) from the 200–300 m stratum (oxygen minimum zone) between CB3 and CB5. The scale bar is in millimeters.
Figure 7 in Spatial structuring of zooplankton communities through partitioning of habitat and resources in the Bay of Bengal during spring intermonsoon
Figure 7. Distribution of dominant (>1%) zooplankton taxonomic groups in different depth strata in the central (a) and western (b) Bay of Bengal during spring intermonsoon. The percentages at every depth are averages from 5 stations in the central and 4 stations in the western bay.
Figure 7 in Assessment of the zooplankton community structure of the coastal Uzungöl Lagoon (Kızılırmak Delta, Turkey) based on community indices and physicochemical parameters
Figure 7. RDA ordination plot for zooplankton taxa and some environmental variables. Taxa in RDA plot indicated with abbreviation: Alona rectangular - Alo rect; Anuraeopsis fissa - Anu fis; Asplanchna prIodonta - Asp prI.; BrachIonus angularIs - Bra ang; BrachIonus calycIflorus -Bra cal; BrachIonus urceolarIs - Bra urc; Cephalodella gIbba - Cep gIb; FIlInIa longIseta - FIl lon; FIlInIa termInalIs - FIl ter; Hexarthra mIra - Hex mIr; Keratella cochlearIs - Ker coc; Keratella quadrata - Ker qua; Keratella tropIca - Ker tro; Lecane luna - Lec lun; Lepadella -Lepa; Notholca acumInata - Not acu; Polyarthra dolIchoptera - Pol dol; Polyarthra vulgarIs -Pol vul; TrIchotrIa pocIllum - TrI poc; TrIchocerca marIna - TrI mar; TrIchotrIa tetractIs - TrI tet.
Linked collectors and determiners for: NEON Biorepository Zooplankton Collection (DNA Extracts).
Natural history specimen data linked to collectors and determiners held within, "NEON Biorepository Zooplankton Collection (DNA Extracts)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="https://bionomia.net/dataset/f1ed0185-5f58-4c58-bfd7-476b44822158">https://bionomia.net/dataset/f1ed0185-5f58-4c58-bfd7-476b44822158</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/f1ed0185-5f58-4c58-bfd7-476b44822158">https://gbif.org/dataset/f1ed0185-5f58-4c58-bfd7-476b44822158</a>. Formatted as a Frictionless Data package.
Melanism protects alpine zooplankton from DNA damage caused by ultraviolet radiation
<p>Melanism is widely observed among animals, and is adaptive in various contexts for its thermoregulatory, camouflaging, mate-attraction, or photoprotective properties. Many organisms exposed to ultraviolet radiation show increased fitness resulting from melanin pigmentation; this has been assumed to result in part from reduced UV-induced damage to DNA. However, to effectively test the hypothesis that melanin pigmentation reduces UV-induced DNA damage requires quantification of UV-specific DNA damage lesions following UV exposure under controlled conditions using individuals that vary in pigmentation intensity. We accomplished this using alpine genotypes of the freshwater microcrustacean <i>Daphnia melanica </i>for which we quantified cyclobutane pyrimide dimers in DNA, a damage structure that can only be generated by UV exposure. For genotypes with carapace melanin pigmentation, we found that individuals with greater melanin content sustained lower levels of UV-induced DNA damage. Individuals with more melanin were also more likely to survive exposure to ecologically relevant levels of UV-B radiation. Parallel experiments with conspecific genotypes that lack carapace melanin pigmentation provide additional support for our conclusion that melanism protects individuals from UV-induced DNA damage. Finally, within-genotype comparisons with asexually-produced clonal siblings demonstrate that melanin content influences DNA damage even among genetically identical individuals raised in the same environment.</p>
Figure 1 in Comparison of zooplankton community structure between impacted and non-impacted areas of Paranaguá Bay Estuarine Complex, south Brazil
Figure 1. Sampling stations in the Paranaguá Bay Estuarine Complex, Brazil.
Figure 1 in Spatial and temporal distribution of zooplankton in Lake Trichonis (Greece)
Figure 1. Lake Trichonis with the three sampling stations (A, B, C).
Dimethyl sulfide mediates microbial predator-prey interactions between zooplankton and algae in the ocean
<p>Phytoplankton are key components of the oceanic carbon and sulfur cycles. During bloom events, some species can emit large amounts of the organosulfur volatile dimethyl sulfide (DMS) into the ocean, and consequently the atmosphere, where it can modulate aerosol formation and affect climate. In aquatic environments, DMS plays an important role as a chemical signal mediating diverse trophic interactions. Yet, its role in microbial predator-prey interactions remains elusive with contradicting evidence for its role in either algal chemical defense or in the chemoattraction of grazers to prey cells. Here, we investigated the signaling role of DMS during zooplankton-algae interactions by genetic and biochemical manipulation of the algal DMS-generating enzyme dimethylsulfoniopropionate lyase (DL) in the bloom-forming alga <em>Emiliania huxleyi</em>. We inhibited DL activity in <em>E. huxleyi</em> cells in-vivo using the selective DL-inhibitor 2-bromo-3-(dimethylsulfonio)-propionate (Br-DMSP), and overexpressed the DL encoding gene in the model diatom <em>Thalassiosira pseudonana.</em> We showed that algal DL activity did not serve as an anti-grazing chemical defense, but paradoxically enhanced predation by the grazer <em>Oxyrrhis marina </em>and other micro- and mesozooplankton, including ciliates and copepods. Consumption of algal prey with induced DL activity also promoted <em>O. marina</em> growth. Overall, our results demonstrate that DMS-mediated grazing may be ecologically important and prevalent during prey-predator dynamics in aquatic ecosystems. The role of algal DMS revealed here, acting as an eat-me signal for grazers, raises fundamental questions regarding the retention of its biosynthetic enzyme through the evolution of dominant bloom-forming phytoplankton in the ocean.</p>
Figure 1 in A review of the zooplankton in Singapore waters
Figure 1: Map of Singapore showing the location of freshwater reservoirs and the sampled stations (DHI Singapore cartography department – GIS). WQ7 and WQ8 are the stations chosen in the frame of the MadeInPlankton project and OSL is the station from the study of Wickstead (1958).
The taxonomic and functional biogeographies of phytoplankton and zooplankton communities across boreal lakes
<p>Dataset for the study: The taxonomic and functional biogeographies of phytoplankton and zooplankton communities across boreal lakes published in Peer Community in Ecology</p>
Hydrogen isotopes (d2H) of polyunsaturated fatty acids track bioconversion by zooplankton
<p>Organisms at the base of aquatic food webs synthesize essential nutrients, such as omega-3 polyunsaturated fatty acids (n-3 PUFA), which are transferred to consumers at higher trophic levels. Many consumers, requiring n-3 long-chain (LC) PUFA, such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA), have limited ability to bioconvert them from the essential dietary precursor α-linolenic acid (ALA) and thus rely on dietary provision of LC-PUFA. We investigated LC-PUFA metabolism in freshwater zooplankton using stable hydrogen isotopes (<i>d</i><sup>2</sup>H) of fatty acids as tracers. We conducted feeding experiments with the freshwater keystone grazer <i>Daphnia</i> to quantify changes in the <i>d</i><sup>2</sup>H value of body FA in response to the FA composition of their food and the <i>d</i><sup>2</sup>H value of the ambient water. The isotopic composition of LC-PUFA changed in <i>Daphnia</i>, depending on the integration of <sup>2</sup>H from ambient water during <i>de novo </i>synthesis or bioconversion from dietary precursors, allowing us to distinguish dietary from bioconverted EPA in body tissue. We tested the applicability of these laboratory findings in a field setting by analyzing <i>d</i><sup>2</sup>H values of PUFA in primary producers and consumers in eutrophic ponds to track EPA sources of zooplankton. Multilinear regression models that included conversion of ALA to EPA correlated better with zooplankton <i>d</i><sup>2</sup>H<sub>EPA</sub> than seston <i>d</i><sup>2</sup>H<sub>EPA</sub> at low dietary EPA supply. This study provides evidence that zooplankton can compensate for low dietary EPA supply by activating LC-PUFA biosynthesis and shows that herbivorous zooplankton play a crucial role in upgrading FA for higher trophic levels during low dietary EPA supply.</p>
Supplementary material 1 from: Ogorelec Ž, Brinker A, Straile D (2022) Small but voracious: invasive generalist consumes more zooplankton in winter than native planktivore. NeoBiota 78: 71-97. https://doi.org/10.3897/neobiota.78.86788
Supplementary data
Zooplankton dataset from Nuup Kangerlua and Ameralik
<p>Seasonal dataset of zooplankton abundance and biomass in Nuup Kangerlua (Station GF10) and Ameralik (Station AM10)</p> <p>The different columns in the dataset show:</p> <p>1: Station Code: Station in Nuup Kangerlua (GF10) or Ameralik (AM10)</p> <p>2: Date: in YYYYMMDD format</p> <p>3: Depth: Depth of the net tow in m</p> <p>4: Net: Duplicate or triplicate net tows were done, Net indicate the number of the net</p> <p>5: Latitude: Latitude of the station</p> <p>6: Longitude: Longitude of the station</p> <p>7: Species: Species, zooplankton species as identified by Arctic Agency</p> <p>8: Stage: life stage as identified by Arctic Agency</p> <p>9: Total: total number of individuals identified</p> <p>10: L1: Length of individual measured in µm</p> <p>11: L2: Length of individual measured in µm</p> <p>12: L3: Length of individual measured in µm</p> <p>13: L4: Length of individual measured in µm</p> <p>14: L5: Length of individual measured in µm</p> <p>15: L6: Length of individual measured in µm</p> <p>16: L7: Length of individual measured in µm</p> <p>17: L8: Length of individual measured in µm</p> <p>18: L9: Length of individual measured in µm</p> <p>19: L10: Length of individual measured in µm</p> <p>20: Mean Length: Mean length of 10 individuals measured (µm)</p> <p>21: Area net: Area of WP2 net used for samplign (m2)</p> <p>22: Abundance: Abundance of individuals in individuals per m3</p> <p>23: Biomass: Biomass of individuals in mg carbon per m3 as calculated according conversion standards</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.