Blar i forfatter "Morata, Nathalie"

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    • From polar night to midnight sun: Diel vertical migration, metabolism and biogeochemical role of zooplankton in a high Arctic fjord (Kongsfjorden, Svalbard) 

      Darnis, Gérald; Hobbs, Laura; Geoffroy, Maxime; Grenvald, Julie Cornelius; Renaud, Paul; Berge, Jørgen; Cottier, Finlo Robert; Kristiansen, Svein; Daase, Malin; Søreide, Janne; Wold, Anette; Morata, Nathalie; Gabrielsen, Tove M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-03-24)
      Zooplankton vertical migration enhances the efficiency of the ocean biological pump by translocating carbon (C) and nitrogen (N) below the mixed layer through respiration and excretion at depth. We measured C and N active transport due to diel vertical migration (DVM) in a Svalbard fjord at 79°N. Multifrequency analysis of backscatter data from an Acoustic Zooplankton Fish Profiler moored from January ...

    • Importance of bacteria and protozooplankton for faecal pellet degradation 

      Morata, Nathalie; Seuthe, Lena (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
      The degradation mechanisms of faecal pellets are still poorly understood, although they determine their contribution to vertical fluxes of carbon. The aim of this study was to attempt to understand the microbial (bacteria and protozooplankton) degradation of faecal pellets by measuring the faecal pellet carbon-specific degradation rate (FP-CSD) as an indicator of pellet degradation. ‘In situ’ and ...

    • Responses in Arctic marine carbon cycle processes: Conceptual scenarios and implications for ecosystem function 

      Findlay, Helen S.; Gibson, Georgina; Kędra, Monika; Morata, Nathalie; Orchowska, Monika; Pavlov, Alexey K.; Reigstad, Marit; Silyakova, Anna; Tremblay, Jean-Éric; Walczowski, Waldemar; Weydmann, Agata; Logvinova, Christie (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-04-15)
      The Arctic Ocean is one of the fastest changing oceans, plays an important role in global carbon cycling and yet is a particularly challenging ocean to study. Hence, observations tend to be relatively sparse in both space and time. How the Arctic functions, geophysically, but also ecologically, can have significant consequences for the internal cycling of carbon, and subsequently influence carbon ...

    • Trait-based approaches in rapidly changing ecosystems: A roadmap to the future polar oceans 

      Degen, Renate; Aune, Magnus; Bluhm, Bodil; Cassidy, Camilla; Kędra, Monika; Kraan, Casper; Vandepitte, Leen; Włodarska-Kowalczuk, Maria; Zhulay, Irina; Albano, Paolo G.; Bremner, Julie; Grebmeier, Jacqueline M.; Link, Heike; Morata, Nathalie; Nordström, Marie C.; Shojaei, Mehdi Ghodrati; Sutton, Lauren; Zuschin, Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-30)
      Polar marine regions are facing rapid changes induced by climate change, with consequences for local faunal populations, but also for overall ecosystem functioning, goods and services. Yet given the complexity of polar marine ecosystems, predicting the mode, direction and extent of these consequences remains challenging. Trait-based approaches are increasingly adopted as a tool by which to explore ...