Blar i forfatter "Renaud, Paul Eric"

Viser treff 21-27 av 27

    • Seafloor warm water temperature anomalies impact benthic macrofauna communities of a high-Arctic cold-water fjord 

      Jorda Molina, Eric; Renaud, Paul Eric; Silberberger, Marc J.; Sen, Arunima; Bluhm, Bodil; Carroll, Michael Leslie; Ambrose, William; Cottier, Finlo Robert; Reiss, Henning (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-05)
      Amid the alarming atmospheric and oceanic warming rates taking place in the Arctic, western fjords around the Svalbard archipelago are experiencing an increased frequency of warm water intrusions in recent decades, causing ecological shifts in their ecosystems. However, hardly anything is known about their potential impacts on the until recently considered stable and colder northern fjords. We ...

    • Seasonal constancy (summer vs. winter) of benthic size spectra in an Arctic fjord 

      Mazurkiewicz, Mikołaj; Górska, Barbara; Renaud, Paul Eric; Legeżyńska, Joanna; Berge, Jørgen; Włodarska-Kowalczuk, Maria (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-08)
      Size spectra are important descriptors of community structure and can indicate changes in community functioning in response to shifts in environmental conditions. There are relatively few assessments of benthic size spectra, and most are based on summer samples alone. Processes influencing size spectra, such as recruitment and predation pressure, vary seasonally, and understanding this variation is ...

    • Seasonal patterns of vertical flux in the northwestern Barents Sea under Atlantic Water influence and sea-ice decline 

      Bodur, Yasemin Vicdan; Renaud, Paul Eric; Goraguer, Lucie Hélène Marie; Amargant I Arumi, Marti; Assmy, Philipp Kurt Wolf; Dabrowska, Anna Maria; Marquardt, Miriam; Renner, Angelika; Tatarek, Agnieska; Reigstad, Marit (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-27)
      The northern Barents Sea is a productive Arctic inflow shelf with a seasonal ice cover and as such, a location with an efficient downward export of particulate organic matter through the biological carbon pump. The region is under strong influence of Atlantification and sea-ice decline, resulting in a longer open water and summer period. In order to understand how these processes influence the ...

    • Still Arctic? — The changing Barents Sea 

      Gerland, Sebastian; Ingvaldsen, Randi Brunvær; Reigstad, Marit; Sundfjord, Arild; Bogstad, Bjarte; Chierici, Melissa; Hop, Haakon; Renaud, Paul Eric; Smedsrud, Lars Henrik; Stige, Leif Christian; Årthun, Marius; Berge, Jørgen; Bluhm, Bodil Annikki Ulla Barbro; Borgå, Katrine; Bratbak, Gunnar; Divine, Dmitry V; Eldevik, Tor; Eriksen, Elena; Fer, Ilker; Fransson, Agneta; Gradinger, Rolf Rudolf; Granskog, Mats A.; Haug, Tore; Husum, Katrine; Johnsen, Geir; Jonassen, Marius Opsanger; Jørgensen, Lis Lindal; Kristiansen, Svein; Larsen, Aud; Lien, Vidar Surén; Lind, Sigrid; Lindstrøm, Ulf Ove; Mauritzen, Cecilie; Melsom, Arne; Mernild, Sebastian H.; Müller, Malte; Nilsen, Frank; Primicerio, Raul; Søreide, Janne; van der Meeren, Gro Ingleid; Wassmann, Paul (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-13)
      The Barents Sea is one of the Polar regions where current climate and ecosystem change is most pronounced. Here we review the current state of knowledge of the physical, chemical and biological systems in the Barents Sea. Physical conditions in this area are characterized by large seasonal contrasts between partial sea-ice cover in winter and spring versus predominantly open water in summer and ...

    • Summer and winter MgCO3 levels in the skeletons of Arctic bryozoans 

      Iglikowska, Anna; Krzemińska, Małgorzata; Renaud, Paul Eric; Berge, Jørgen; Hop, Haakon; Kuklinski, Piotr (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-02)
      <p>In the Arctic, seasonal patterns in seawater biochemical conditions are shaped by physical, chemical, and biological processes related to the alternation of seasons, i.e. winter polar night and summer midnight sun. In summertime, CO<sub>2</sub> concentration is driven by photosynthetic activity of autotrophs which raises seawater pH and carbonate saturation state (Ω). In addition, restriction of ...

    • Uptake of sympagic organic carbon by the Barents Sea benthos linked to sea ice seasonality 

      Cautain, Ivan J.; Last, Kim S.; Mckee, David; Bluhm, Bodil; Renaud, Paul Eric; Ziegler, Amanda; Narayanaswamy, Bhavani E. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-11)
      On Arctic shelves, where primary production occurs in both the pelagic and sympagic (ice-associated) habitats, sympagic organic material (OM) can constitute a disproportionate fraction of benthic diets due to higher sinking rates and lower grazing pressure than pelagic OM. Less documented is how sympagic OM assimilation across feeding guilds varies seasonally and in relation to sea ice duation. We ...

    • Weak seasonality in benthic food web structure within an Arctic inflow shelf region 

      Ziegler, Amanda; Bluhm, Bodil; Renaud, Paul Eric; Jørgensen, Lis Lindal (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-23)
      The Arctic Ocean is characterized by pronounced seasonality in the quantity and quality of organic matter exported from the surface ocean. While it is well established that changes in food availability can alter the abundance, biomass and function of benthic organisms, the impact on food web structure is not well studied. We used bulk carbon and nitrogen stable isotope analysis to assess the quantity ...