3
views
0
recommends
+1 Recommend
1 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: found
      Is Open Access

      Features of winter zooplankton assemblage in the Central Trough of the Barents Sea

      ,

      Arctic Environmental Research

      Kniga Service Agency Ltd.

      Read this article at

      ScienceOpenPublisher
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          The Barents Sea is a highly productive shelf region. Zooplankton assemblages are a key component of the carbon cycle in Arctic marine ecosystems; they transfer energy from lower trophic levels to higher levels, including larval and young commercial fish. The winter state of the zooplankton community in the Central Through and their slopes (Barents Sea) was investigated in late November 2010. Vertical structure of water layer was characterised by pycnocline located below 80 m. The upper strata were occupied by transformed Atlantic Water, while winter Barents Sea Water with negative temperatures was in the bottom strata. Total zooplankton abundance varied from 162 to 1214 individuals/m3. Biomass ranged from 88 to 799 mg wet mass/m3. Copepods dominated in terms of total zooplankton abundance (average 99%) and biomass (92%). Maximum densities of Calanus finmarchicus and Calanus glacialis were registered in the frontal zone separating warm and cold water masses. Abundances of Metridia longa and O. similis were highest in cold waters. Three groups of stations differing in terms of the common copepod composition were delineated with cluster analysis. The age structure of Calanus finmarchicus and Metridia longa was characterised by a prevalence of copepodites IV–V. Total zooplankton abundance and biomass were correlated to water temperature and salinity, suggesting that hydrological conditions were the key driver of spatial variations of the zooplankton communities. High biomass of large copepods suggests potential significance of the investigated region for feeding of young and adult fish.

          Related collections

          Most cited references 7

          • Record: found
          • Abstract: not found
          • Article: not found

          Food webs and carbon flux in the Barents Sea

            Bookmark
            • Record: found
            • Abstract: not found
            • Book Chapter: not found

            Climate variability and possible effects on arctic food chains: The role of Calanus

              Bookmark
              • Record: found
              • Abstract: not found
              • Article: not found

              Hydrodynamic control of mesozooplankton abundance and biomass in northern Svalbard waters (79–81°N)

                Bookmark

                Author and article information

                Journal
                Arctic Environmental Research
                AER
                Kniga Service Agency Ltd.
                2541-8416
                March 30 2018
                March 30 2018
                : 18
                : 1
                : 28-36
                Article
                10.17238/issn2541-8416.2018.18.1.28
                © 2018

                Comments

                Comment on this article