Blar i forfatter "Kosobokova, Ksenia N."

Viser treff 1-6 av 6

    • Arctic continental slopes sharp gradients of physical processes affect pelagic and benthic ecosystems. 

      Bluhm, Bodil; Janout, Markus; Danielson, Seth L.; Ellingsen, Ingrid H.; Gavrilo, Maria; Grebmeier, Jaqueline; Hopcroft, Russell R.; Iken, Katrin; Ingvaldsen, Randi Brunvær; Jørgensen, Lis Lindal; Kosobokova, Ksenia N.; Kwok, Ron; Polyakov, Igor V.; Renaud, Paul E.; Carmack, Eddy C. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-11-20)
      Continental slopes – steep regions between the shelf break and abyssal ocean – play key roles in the climatology and ecology of the Arctic Ocean. Here, through review and synthesis, we find that the narrow slope regions contribute to ecosystem functioning disproportionately to the size of the habitat area (∼6% of total Arctic Ocean area). Driven by inflows of sub-Arctic waters and steered by topography, ...

    • Contrasting Life Traits of Sympatric Calanus glacialis and C. finmarchicus in a Warming Arctic Revealed by a Year-Round Study in Isfjorden, Svalbard 

      Hatlebakk, Maja K Viddal; Kosobokova, Ksenia N.; Daase, Malin; Søreide, Janne (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-12)
      The calanoid copepod Calanus glacialis dominates the mesozooplankton biomass in the Arctic shelf seas, but its smaller North Atlantic sibling Calanus finmarchicus is expanding northwards and may potentially replace it if the climate continues to warm. Here we studied the population structure, overwintering strategies, gonad maturation and egg production of C. glacialis and C. finmarchicus over ...

    • Cross-shelf structure and distribution of mesozooplankton communities in the East-Siberian Sea and the adjacent Arctic Ocean 

      Ershova, Elizaveta; Kosobokova, Ksenia N. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-29)
      The East-Siberian Sea (ESS) plays a significant role in circulation of surface water and biological production in the Arctic, yet due to its remote location and historically difficult sampling conditions remains the most understudied of all Arctic shelf seas, with even baseline information on biological communities absent in literature. We aim to fill this gap by describing the distribution and ...

    • Genetics redraws pelagic biogeography of Calanus 

      Choquet, Marvin Raoul Charles Roger Ren; Haltebakk, Maja; Dhanasiri, Anusha Krishanthi Shyama; Kosobokova, Ksenia N.; Smolina, Irina Vladimirovna; Søreide, Janne; Svensen, Camilla; Melle, Webjørn Raunsgård; Kwasniewski, Slawomir; Eiane, Ketil; Daase, Malin; Tverberg, Vigdis; Skreslet, Stig; Bucklin, Ann; Hoarau, Galice Guillaume (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-20)
      Planktonic copepods of the genus Calanus play a central role in North Atlantic/Arctic marine food webs. Here, using molecular markers, we redrew the distributional ranges of Calanus species inhabiting the North Atlantic and Arctic Oceans and revealed much wider and more broadly overlapping distributions than previously described. The Arctic shelf species, C. glacialis, dominated the zooplankton ...

    • The relationship between patterns of benthic fauna and zooplankton in the Chukchi Sea and physical forcing 

      Pisareva, Maria; Pickart, Robert S.; Iken, Katrin; Ershova, Elizaveta; Grebmeier, Jacqueline M.; Cooper, Lee W.; Bluhm, Bodil; Nobre, Carolina; Hopcroft, Russell R.; Hu, Haoguo; Wang, Jia; Ashjian, Carin; Kosobokova, Ksenia N.; Whitledge, Terry (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-09)
      Using data from a number of summer surveys of the Chukchi Sea over the past decade, we investigate aspects in which the benthic fauna, sediment structure, and zooplankton there are related to circulation patterns and shelf hydrographic conditions. A flow speed map is constructed that reveals the major pathways on the shelf. Regions of enhanced flow speed are dictated by lateral constrictions—i ...

    • Sea ice decline drives biogeographical shifts of key Calanus species in the central Arctic Ocean 

      Ershova, Elizaveta A.; Kosobokova, Ksenia N.; Banas, Neil S.; Ellingsen, Ingrid; Niehoff, Barbara; Hildebrandt, Nicole; Hirche, Hans-Juergen (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-19)
      In recent decades, the central Arctic Ocean has been experiencing dramatic decline in sea ice coverage, thickness and extent, which is expected to have a tremendous impact on all levels of Arctic marine life. Here, we analyze the regional and temporal changes in pan-Arctic distribution and population structure of the key zooplankton species <i>Calanus glacialis</i> and <i>C. hyperboreus</i> in ...