Effects of multiple stressors on an Arctic phytoplankton assemblage from Kongsfjorden (Svalbard)
Increased atmospheric CO2 concentrations lead to ocean warming and acidification, with fastest rates of change occurring in the Arctic. Concurrent changes in sea-ice cover and optical properties as well as in surface stratification also cause strong changes in the light regimes phytoplankton encount...
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ftawi:oai:epic.awi.de:41610 2023-05-15T14:27:06+02:00 Effects of multiple stressors on an Arctic phytoplankton assemblage from Kongsfjorden (Svalbard) Hoppe, Clara Wolf, Klara Wischnewski, Laura Rost, Bjoern 2015-03-17 https://epic.awi.de/id/eprint/41610/ https://hdl.handle.net/10013/epic.48485 unknown Hoppe, C. orcid:0000-0002-2509-0546 , Wolf, K. orcid:0000-0003-4638-5316 , Wischnewski, L. and Rost, B. orcid:0000-0001-5452-5505 (2015) Effects of multiple stressors on an Arctic phytoplankton assemblage from Kongsfjorden (Svalbard) , Gordon Research Conference ‘Polar Marine Science’, Lucca, Italy, 15 March 2015 - 20 March 2015 . hdl:10013/epic.48485 EPIC3Gordon Research Conference ‘Polar Marine Science’, Lucca, Italy, 2015-03-15-2015-03-20 Conference notRev 2015 ftawi 2021-12-24T15:41:51Z Increased atmospheric CO2 concentrations lead to ocean warming and acidification, with fastest rates of change occurring in the Arctic. Concurrent changes in sea-ice cover and optical properties as well as in surface stratification also cause strong changes in the light regimes phytoplankton encounter in the water column. Each of these environmental changes alone has the potential to strongly alter primary production and phytoplankton community structure, but their simultaneous changes probably lead to strong and unexpected interactive effects. To shed light on this understudied topic, a natural phytoplankton assemblage from the Kongsfjorden (Svalbard) was exposed to a matrix of two pCO2, two temperatures and two light levels. Performance and development of the phytoplankton assemblages under controlled conditions were monitored for 3 weeks. Preliminary results for the observed changes in species composition, stoichiometry, primary production and photophysiology will be presented. The likely consequences in terms of productivity changes or biodiversity shifts and their implications for higher trophic levels and biogeochemical cycles will be discussed. Conference Object Arctic Arctic Kongsfjord* Kongsfjorden Phytoplankton Sea ice Svalbard Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Arctic Svalbard |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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description |
Increased atmospheric CO2 concentrations lead to ocean warming and acidification, with fastest rates of change occurring in the Arctic. Concurrent changes in sea-ice cover and optical properties as well as in surface stratification also cause strong changes in the light regimes phytoplankton encounter in the water column. Each of these environmental changes alone has the potential to strongly alter primary production and phytoplankton community structure, but their simultaneous changes probably lead to strong and unexpected interactive effects. To shed light on this understudied topic, a natural phytoplankton assemblage from the Kongsfjorden (Svalbard) was exposed to a matrix of two pCO2, two temperatures and two light levels. Performance and development of the phytoplankton assemblages under controlled conditions were monitored for 3 weeks. Preliminary results for the observed changes in species composition, stoichiometry, primary production and photophysiology will be presented. The likely consequences in terms of productivity changes or biodiversity shifts and their implications for higher trophic levels and biogeochemical cycles will be discussed. |
format |
Conference Object |
author |
Hoppe, Clara Wolf, Klara Wischnewski, Laura Rost, Bjoern |
spellingShingle |
Hoppe, Clara Wolf, Klara Wischnewski, Laura Rost, Bjoern Effects of multiple stressors on an Arctic phytoplankton assemblage from Kongsfjorden (Svalbard) |
author_facet |
Hoppe, Clara Wolf, Klara Wischnewski, Laura Rost, Bjoern |
author_sort |
Hoppe, Clara |
title |
Effects of multiple stressors on an Arctic phytoplankton assemblage from Kongsfjorden (Svalbard) |
title_short |
Effects of multiple stressors on an Arctic phytoplankton assemblage from Kongsfjorden (Svalbard) |
title_full |
Effects of multiple stressors on an Arctic phytoplankton assemblage from Kongsfjorden (Svalbard) |
title_fullStr |
Effects of multiple stressors on an Arctic phytoplankton assemblage from Kongsfjorden (Svalbard) |
title_full_unstemmed |
Effects of multiple stressors on an Arctic phytoplankton assemblage from Kongsfjorden (Svalbard) |
title_sort |
effects of multiple stressors on an arctic phytoplankton assemblage from kongsfjorden (svalbard) |
publishDate |
2015 |
url |
https://epic.awi.de/id/eprint/41610/ https://hdl.handle.net/10013/epic.48485 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Arctic Kongsfjord* Kongsfjorden Phytoplankton Sea ice Svalbard |
genre_facet |
Arctic Arctic Kongsfjord* Kongsfjorden Phytoplankton Sea ice Svalbard |
op_source |
EPIC3Gordon Research Conference ‘Polar Marine Science’, Lucca, Italy, 2015-03-15-2015-03-20 |
op_relation |
Hoppe, C. orcid:0000-0002-2509-0546 , Wolf, K. orcid:0000-0003-4638-5316 , Wischnewski, L. and Rost, B. orcid:0000-0001-5452-5505 (2015) Effects of multiple stressors on an Arctic phytoplankton assemblage from Kongsfjorden (Svalbard) , Gordon Research Conference ‘Polar Marine Science’, Lucca, Italy, 15 March 2015 - 20 March 2015 . hdl:10013/epic.48485 |
_version_ |
1766300683319902208 |