|
|
|
|
|
| Findlay, Helen S.; Gibson, Georgina; Kedra, Monika; Morata, Nathalie; Orchowska, Monika; Pavlov, Alexey K.; Reigstad, Marit; Silyakova, Anna; Tremblay, Jean-eric; Walczowski, Waldemar; Weydmann, Agata; Logvinova, Christie. |
| 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 export, atmospheric CO2 uptake and food chain productivity. Here we assess the major carbon pools and associated processes, specifically summarizing the current knowledge of each of these processes in terms of data availability and ranges of rates and values for four geophysical Arctic Ocean domains originally described by Carmack & Wassmann (2006): inflow... |
| Tipo: Text |
Palavras-chave: Sea ice; Climate change; Ecosystem function; Carbon cycling. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00617/72889/71907.pdf |
| |
|
|
| Berge, Jorgen; Daase, Malin; Renaud, Paul E.; Ambrose, William G., Jr.; Darnis, Gerald; Last, Kim S.; Leu, Eva; Cohen, Jonathan H.; Johnsen, Geir; Moline, Mark A.; Cottier, Finlo; Varpe, Oystein; Shunatova, Natalia; Balazy, Piotr; Morata, Nathalie; Massabuau, Jean-charles; Falk-petersen, Stig; Kosobokova, Ksenia; Hoppe, Clara J. M.; Weslawski, Jan Marcin; Kuklinski, Piotr; Legezynska, Joanna; Nikishina, Daria; Cusa, Marine; Kedra, Monika; Wlodarska-kowalczuk, Maria; Vogedes, Daniel; Camus, Lionel; Tran, Damien; Michaud, Emma; Gabrielsen, Tove M.; Granovitch, Andrei; Gonchar, Anya; Krapp, Rupert; Callesen, Trine A.. |
| The current understanding of Arctic ecosystems is deeply rooted in the classical view of a bottom-up controlled system with strong physical forcing and seasonality in primary-production regimes. Consequently, the Arctic polar night is commonly disregarded as a time of year when biological activities are reduced to a minimum due to a reduced food supply. Here, based upon a multidisciplinary ecosystem-scale study from the polar night at 79 degrees N, we present an entirely different view. Instead of an ecosystem that has entered a resting state, we document a system with high activity levels and biological interactions across most trophic levels. In some habitats, biological diversity and presence of juvenile stages were elevated in winter months compared to... |
| Tipo: Text |
|
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00288/39885/38620.pdf |
| |
|
|
|
