Responses in Arctic marine carbon cycle processes: conceptual scenarios and implications for ecosystem function
|Author(s)||Findlay Helen S.1, Gibson Georgina2, Kedra Monika3, 4, Morata Nathalie5, Orchowska Monika4, Pavlov Alexey K.6, 7, 8, Reigstad Marit8, Silyakova Anna9, Tremblay Jean-Eric10, Walczowski Waldemar4, Weydmann Agata4, Logvinova Christie11|
|Affiliation(s)||1 : Plymouth Marine Lab, Plymouth PL1 3DH, Devon, England.
2 : Univ Alaska, Int Arctic Res Ctr, Fairbanks, AK 99775 USA.
3 : Univ Maryland, Ctr Environm Sci, Chesapeake Biol Lab, Solomons, MD 20688 USA.
4 : Polish Acad Sci, Inst Oceanol, PL-81712 Sopot, Poland.
5 : Natl Ctr Sci Res, Lab Sci & Environm, FR-29280 Plouzane, France.
6 : Norwegian Polar Res Inst, Fram Ctr, NO-9296 Tromso, Norway.
7 : Arctic & Antarctic Res Inst, RU-199397 St Petersburg, Russia.
8 : Univ Tromso, Dept Arctic & Marine Biol, NO-9037 Tromso, Norway.
9 : Univ Tromso, Ctr Arctic Gas Hydrate Environm & Climate, NO-9037 Tromso, Norway.
10 : Univ Laval, Dept Biol, Quebec Ocean & Takuvik, Quebec City, PQ G1V 0A6, Canada.
11 : Clark Univ, Grad Sch Geog, Worcester, MA 01610 USA.
|Source||Polar Research (0800-0395) (Open Academia Ab), 2015 , Vol. 34 , N. 1 , P. 24252 (27p.)|
|WOS© Times Cited||14|
|Keyword(s)||Sea ice, climate change, ecosystem function, carbon cycling|
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 shelves, which are Pacific-influenced and Atlantic-influenced; interior, river-influenced shelves; and central basins. We attempt to bring together knowledge of the carbon cycle with the ecosystem within each of these different geophysical settings, in order to provide specialist information in a holistic context. We assess the current state of models and how they can be improved and/or used to provide assessments of the current and future functioning when observational data are limited or sparse. In doing so, we highlight potential links in the physical oceanographic regime, primary production and the flow of carbon within the ecosystem that will change in the future. Finally, we are able to highlight priority areas for research, taking a holistic pan-Arctic approach.