• Both the mean integrated zooplankton biomass and abundance observed in 2001 in the Anticosti Gyre and the Gaspé Current were on par with what we observed in 1999 and 2000. (gc.ca)
  • The total zooplankton biomass varied between 3 and 208 g ww · m-2 along the six transects sampled in June and December 2001 in the Lower Estuary and the Gulf of St. Lawrence. (gc.ca)
  • The zooplankton biomass observed in 2001 along all transects for both seasons (spring and fall) was on par with observations made in 2000 except along the Magdalen Island transect, where the zooplankton biomass was three and two times higher in spring and fall 2001 than in spring and fall 2000, and along the Cabot Strait transect, where the biomass was two times lower in fall 2001 than in fall 2000. (gc.ca)
  • −1 ·day −1 ) was calculated by the formula: R = B z × DT −1 × 24, where B z is zooplankton biomass in the predator gastric cavity (mg), and DT is zooplankton digestion time (h). (marine-biology.ru)
  • Predatory impact of gelatinous zooplankton was estimated by the values of daily ration and mesozooplankton biomass. (marine-biology.ru)
  • Distribution of total zooplankton biomass (dry weight, g m-2) from near bottom - 0 m in autumn 2017. (barentsportal.com)
  • Based only on Norwegian data, which represent the longest time series, average zooplankton biomass combined all size-fractions in August-October 2017 was 6.4 g dry-weight m -2 in the western-central Barents Sea, this estimate is lower than in 2016 (7.7 g dry-weight m -2 ), and somewhat lower than the average for the last 20 years (7.0 g dry-weight m -2 ). (barentsportal.com)
  • Combined Russian and Norwegian data (247 stations in total) covering the entire Barents Sea provided an estimated average zooplankton biomass of 7.2 (SD 5.7) g dry-weight m -2 in 2017. (barentsportal.com)
  • Time-series of mean zooplankton biomass from bottom - 0 m (dry-weight, g m-2) for the western and central Barents Sea (Norwegian sector) of the autumn ecosystem-survey, 1988-2017. (barentsportal.com)
  • Zooplankton biomass can vary considerably between years and appears to be controlled largely by predation pressure, e.g. from capelin, although the yearly predation impact is expected to vary between regions. (barentsportal.com)
  • All jellyfish are gelatinous zooplankton, but not all gelatinous zooplankton are jellyfish. (wikipedia.org)
  • Traditionally jellyfish have been viewed as trophic dead ends, minor players in the marine food web, gelatinous organisms with a body plan largely based on water that offers little nutritional value or interest for other organisms apart from a few specialised predators such as the ocean sunfish and the leatherback sea turtle. (wikipedia.org)
  • Jellyfish, and more gelatinous zooplankton in general, which include salps and ctenophores, are very diverse, fragile with no hard parts, difficult to see and monitor, subject to rapid population swings and often live inconveniently far from shore or deep in the ocean. (wikipedia.org)
  • Pelagic siphonophores Gelatinous zooplankton like this narcomedusan can be key predators in deep pelagic food webs Solmissus ingesting a salp chain Helmet jellyfish feeding on an armhook squid Trachymedusa with a large red mysid in its gut Biological oceanic processes, primarily carbon production in the euphotic zone, sinking and remineralization, govern the global biological carbon soft‐tissue pump. (wikipedia.org)
  • Besides jellyfish, arrow worms (Chaetognatha) are also members of non-crustacean zooplankton that host different types of parasites, like this H. aduncum roundworm (Nematoda). (uib.no)
  • In particular, gelatinous zooplankton (Cnidaria, Ctenophora, and Chordata, namely, Thaliacea) are universal members of plankton communities that graze on phytoplankton and prey on other zooplankton and ichthyoplankton. (wikipedia.org)
  • Zooplankton was sampled with a Juday plankton net with mouth diameter of 38 cm and mesh size of 140 µm. (marine-biology.ru)
  • To elucidate the reasons for the high TTE in the HUS, WP3 will analyse the plankton food web structure and quantify major trophic pathways with special focus on microzooplankton and dominant meso-zooplankton taxa. (ebus-climate-change.de)
  • Predation from other planktivorous species (herring, polar cod and blue whiting) and pelagic juveniles of demersal fish (cod, haddock, saithe, and redfish) can also affect the state of the plankton in the Barents Sea. (barentsportal.com)
  • The relationship between water column stratification, pelagic habitat heterogeneity and plankton diversity in a neritic, river-dominated environment. (uncw.edu)
  • Steve Haddock's lab aims to characterize and monitor gelatinous plankton through several approaches. (mbari.org)
  • Historically, marine protists have been classified into two groups depending on their trophic strategy: the photosynthetic plankton (phytoplankton) and the heterotrophic plankton (zooplankton). (nature.com)
  • The importance of the so-called "jelly web" is only beginning to be understood, but it seems medusae, ctenophores and siphonophores can be key predators in deep pelagic food webs with ecological impacts similar to predator fish and squid. (wikipedia.org)
  • Traditionally gelatinous predators were thought ineffectual providers of marine trophic pathways, but they appear to have substantial and integral roles in deep pelagic food webs. (wikipedia.org)
  • They play important roles in ocean ecosystems, and are among the most abundant gelatinous predators. (wikipedia.org)
  • To study the food spectrum and feeding rate of gelatinous predators, the composition of food items in the gastric cavity was analyzed under a binocular microscope. (marine-biology.ru)
  • assess the effect of physical-biological boundaries (meso-scale eddies and filaments or the intense OMZ) on the zooplankton dynamics of the HUS, since prey and predators often aggregate at these water mass boundaries and less energy is required for the search of food, which is expected to result in a higher overall TTE. (ebus-climate-change.de)
  • The ocean's midwater zone is dominated by gelatinous predators such as ctenophores, siphonophores, and hydromedusae. (mbari.org)
  • There were significant changes in the mean abundance in some macrozooplankton species: 1) decreases in the euphausiid Thysanoessa raschii , 2) increases in the euphausiid Meganyctiphanes norvegica , the chaetognath Sagitta elegans , the gelatinous zooplankton Aglantha digitale , Obelia sp. (gc.ca)
  • Filter-feeding gelatinous macrozooplankton (FFGM), namely salps, pyrosomes and doliolids, are increasingly recognized as an essential component of the marine ecosystem. (copernicus.org)
  • The seasonal occurrence and abundance of gelatinous macrozooplankton in Izmit Bay (the northeastern Marmara Sea). (istanbul.edu.tr)
  • Ctenophores (phylum Ctenophora ), also known as comb jellies , are marine invertebrates that have eight rows of comb-like cilia on their transparent, gelatinous bodies. (newworldencyclopedia.org)
  • The glass ctenophore belongs precisely to the philum of the Ctenophores which groups transparent and gelatinous organisms, typically pelagic, whose body is crossed by ribs along which we notice a series of vibrating eyelashes. (intotheblue.link)
  • 2022. Speciation of pelagic zooplankton: Invisible boundaries can drive isolation of oceanic ctenophores. (mbari.org)
  • In tentacles or small combs, the cells are not stinging but adhesive, and it is precisely these adhesive cells called "colloblasts" that capture the zooplankton that these organisms feed on. (intotheblue.link)
  • This means that for the next two years we will be looking for tapeworms, flukes, roundworms, and amphipods as ParaZoo tries to answer the question of which of these organisms are associated with gelatinous hosts in Norwegian waters. (uib.no)
  • Similar to other hydrozoans they feed passively on crustacean zooplankton that are captured in their extended tentacles. (vichighmarine.ca)
  • ParaZoo (complete name ' Metazoan parasites of non-crustacean zooplankton ') is one of the most interaction-focused projects currently running at the Invertebrate Collections of our Museum. (uib.no)
  • To get a better overview of which critters live in non-crustacean zooplankton, ParaZoo will sample, record, and DNA-barcode specimens from all over the country. (uib.no)
  • Marine zooplankton play a major role as ecosystem engineers in coastal and open ocean ecosystems because they serve as links between primary production, higher trophic levels, and deep‐sea communities. (wikipedia.org)
  • it did not result in a drastic reduction in zooplankton abundance and provided favorable feeding conditions for small planktivorous pelagic fish. (marine-biology.ru)
  • Pelagic siphonophores, a diverse group of cnidarians, are found at most depths of the ocean - from the surface, like the Portuguese man of war, to the deep sea. (wikipedia.org)
  • Three-dimensional cross-shelf zooplankton distributions off the Central Oregon Coast during anomalous oceanographic conditions. (uncw.edu)
  • Associations between lobster phyllosoma and gelatinous zooplankton in relation to oceanographic properties in the northern Gulf of Mexico. (uncw.edu)
  • Population genomic structure of the gelatinous zooplankton species Mnemiopsis leidyi in its nonindigenous range in the North Sea. (lifewatch.be)
  • However, almost all marine phyla, including Annelida, Mollusca and Arthropoda, contain gelatinous species, but many of those odd species live in the open ocean and the deep sea and are less available to the casual ocean observer. (wikipedia.org)
  • They also provide aesthetic value to humans , whether through the unique light-scattering produced by the rows of cilia, which appear as a changing rainbow of colors moving down the comb rows (Mills 2005), or their gelatinous transparent and sometimes colorful (though generally colorless) bodies, or the bioluminescence of many species. (newworldencyclopedia.org)
  • is a species of pelagic tunicate, also known as a doliolid. (photoshelter.com)
  • The total abundance of zooplankton in 2001 varied between 22,000 and 317,000 individuals · m-2 in the Gaspé Current and between 28,500 and 213,000 individuals · m-2 in the Anticosti Gyre. (gc.ca)
  • At both stations, the total abundance of zooplankton observed in 2001 was on par with observations made in 2000. (gc.ca)
  • The overall abundance of zooplankton was generally lower in 2001 than in 2000 for all regions and for both seasons except for fall in the southern Gulf (Magdalen Island transect), where the inverse was true. (gc.ca)
  • Globally, in both the Lower Estuary and the Gulf of St. Lawrence, the overall abundance of zooplankton was 64% and 41% lower in spring and fall 2001 than in 2000. (gc.ca)
  • In the samples fixed with 4 % formalin solution, zooplankton abundance, its taxonomic composition, and size-age structure were quantified by standard method. (marine-biology.ru)
  • Changes in abundance and community structure of the zooplankton population during the 2008 mucilage event in the northeastern Marmara Sea. (istanbul.edu.tr)
  • 2020. Hypoxia's impact on pelagic fish populations in Lake Erie: A tale of two planktivores. (zoo-plankton.net)
  • Hatchet fish have upward facing eyes and mouths and swim up to the the epi-pelagic zone at night to feed on salps and krill. (noaateacheratsea.blog)
  • Marine zooplankton is no exception to this trend, and many parasites and symbionts are expected to occur in copepods, krill, and gelatinous zooplankton. (uib.no)
  • The annual minimum and maximum zooplankton biomasses occur in April in the Anticosti Gyre and the Gaspé Current respectively. (gc.ca)
  • This implies that estimates of average zooplankton biomasses for different years might not be directly comparable. (barentsportal.com)
  • 2022. Three distinct views of deep pelagic community composition based on complementary sampling approaches. (mbari.org)
  • Does consistent individual variability in pelagic fish larval behaviour affect recruitment in nursery habitats? (ualg.pt)
  • From spatial pattern to ecological process through imaging zooplankton interactions. (uncw.edu)
  • The latest haul had a large colonial salp - a gelatinous filer feeder about the size of your finger, but that lives in long connected ribbons of several dozen clones. (uk-ssb.org)
  • In Haul 3 we collected a pelagic octopus, Ocythoe tuberculat a, shown below. (noaateacheratsea.blog)
  • Understanding zooplankton parasites is important because many of them are going to be transmitted to fish, where they may cause serious diseases. (uib.no)
  • Copepod eggs, juveniles, and adults were clearly dominant, accounting for more than 80% of the zooplankton community for all sampling dates in the Anticosti Gyre and the Gaspé Current except in May and July in the Gaspé Current. (gc.ca)
  • Gelatinous zooplankton are fragile animals that live in the water column in the ocean. (wikipedia.org)
  • Sari Giering (University of Aberdeen) has started her sampling of the zooplankton - the tiny animals that feed on the microbial plants (and on each other). (uk-ssb.org)
  • Leatherbacks are primarily pelagic animals. (animaldiversity.org)
  • They are widely known as pelagic animals but are seen in coastal waters when searching for food. (animaldiversity.org)
  • The zooplankton net, which is hauled vertically upward through the water to catch any zooplankton on a mesh at the end of the net, has come back with all sorts of stuff. (uk-ssb.org)