Role for Atlantic inflows and sea ice loss on shifting phytoplankton blooms in the Barents Sea
Phytoplankton blooms in the Barents Sea are highly sensitive to seasonal and interannual changes in sea ice extent, water mass distribution, and oceanic fronts. With the ongoing increase of Atlantic Water inflows, we expect an impact on these blooms. Here, we use a state-of-the-art collection of in...
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ftunivbruxelles:oai:dipot.ulb.ac.be:2013/259292 2023-05-15T15:38:30+02:00 Role for Atlantic inflows and sea ice loss on shifting phytoplankton blooms in the Barents Sea Oziel, Laurent Neukermans, Griet Ardyna, Mathieu Lancelot, Christiane Tison, Jean-Louis Wassmann, Paul Sirven, Jérôme Ruiz-Pino, Diana Gascard, Jean Claude 2017-06 No full-text files http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/259292 en eng uri/info:doi/10.1002/2016JC012582 uri/info:scp/85021321078 http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/259292 Journal of geophysical research. Oceans, 122 (6 Sciences de l'espace Phénomènes atmosphériques Géographie physique Sciences de la terre et du cosmos Atlantification Barents Sea climate change phytoplankton polar front sea ice info:eu-repo/semantics/article info:ulb-repo/semantics/articlePeerReview info:ulb-repo/semantics/openurl/article 2017 ftunivbruxelles 2022-06-12T21:45:07Z Phytoplankton blooms in the Barents Sea are highly sensitive to seasonal and interannual changes in sea ice extent, water mass distribution, and oceanic fronts. With the ongoing increase of Atlantic Water inflows, we expect an impact on these blooms. Here, we use a state-of-the-art collection of in situ hydrogeochemical data for the period 1998–2014, which includes ocean color satellite-derived proxies for the biomass of calcifying and noncalcifying phytoplankton. Over the last 17 years, sea ice extent anomalies were evidenced having direct consequences for the spatial extent of spring blooms in the Barents Sea. In years of minimal sea ice extent, two spatially distinct blooms were clearly observed: one along the ice edge and another in ice-free water. These blooms are thought to be triggered by different stratification mechanisms: heating of the surface layers in ice-free waters and melting of the sea ice along the ice edge. In years of maximal sea ice extent, no such spatial delimitation was observed. The spring bloom generally ended in June when nutrients in the surface layer were depleted. This was followed by a stratified and oligotrophic summer period. A coccolithophore bloom generally developed in August, but was confined only to Atlantic Waters. In these same waters, a late summer bloom of noncalcifying algae was observed in September, triggered by enhanced mixing, which replenishes surface waters with nutrients. Altogether, the 17 year time-series revealed a northward and eastward shift of the spring and summer phytoplankton blooms. SCOPUS: ar.j info:eu-repo/semantics/published Article in Journal/Newspaper Barents Sea Sea ice DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) Barents Sea |
institution |
Open Polar |
collection |
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB) |
op_collection_id |
ftunivbruxelles |
language |
English |
topic |
Sciences de l'espace Phénomènes atmosphériques Géographie physique Sciences de la terre et du cosmos Atlantification Barents Sea climate change phytoplankton polar front sea ice |
spellingShingle |
Sciences de l'espace Phénomènes atmosphériques Géographie physique Sciences de la terre et du cosmos Atlantification Barents Sea climate change phytoplankton polar front sea ice Oziel, Laurent Neukermans, Griet Ardyna, Mathieu Lancelot, Christiane Tison, Jean-Louis Wassmann, Paul Sirven, Jérôme Ruiz-Pino, Diana Gascard, Jean Claude Role for Atlantic inflows and sea ice loss on shifting phytoplankton blooms in the Barents Sea |
topic_facet |
Sciences de l'espace Phénomènes atmosphériques Géographie physique Sciences de la terre et du cosmos Atlantification Barents Sea climate change phytoplankton polar front sea ice |
description |
Phytoplankton blooms in the Barents Sea are highly sensitive to seasonal and interannual changes in sea ice extent, water mass distribution, and oceanic fronts. With the ongoing increase of Atlantic Water inflows, we expect an impact on these blooms. Here, we use a state-of-the-art collection of in situ hydrogeochemical data for the period 1998–2014, which includes ocean color satellite-derived proxies for the biomass of calcifying and noncalcifying phytoplankton. Over the last 17 years, sea ice extent anomalies were evidenced having direct consequences for the spatial extent of spring blooms in the Barents Sea. In years of minimal sea ice extent, two spatially distinct blooms were clearly observed: one along the ice edge and another in ice-free water. These blooms are thought to be triggered by different stratification mechanisms: heating of the surface layers in ice-free waters and melting of the sea ice along the ice edge. In years of maximal sea ice extent, no such spatial delimitation was observed. The spring bloom generally ended in June when nutrients in the surface layer were depleted. This was followed by a stratified and oligotrophic summer period. A coccolithophore bloom generally developed in August, but was confined only to Atlantic Waters. In these same waters, a late summer bloom of noncalcifying algae was observed in September, triggered by enhanced mixing, which replenishes surface waters with nutrients. Altogether, the 17 year time-series revealed a northward and eastward shift of the spring and summer phytoplankton blooms. SCOPUS: ar.j info:eu-repo/semantics/published |
format |
Article in Journal/Newspaper |
author |
Oziel, Laurent Neukermans, Griet Ardyna, Mathieu Lancelot, Christiane Tison, Jean-Louis Wassmann, Paul Sirven, Jérôme Ruiz-Pino, Diana Gascard, Jean Claude |
author_facet |
Oziel, Laurent Neukermans, Griet Ardyna, Mathieu Lancelot, Christiane Tison, Jean-Louis Wassmann, Paul Sirven, Jérôme Ruiz-Pino, Diana Gascard, Jean Claude |
author_sort |
Oziel, Laurent |
title |
Role for Atlantic inflows and sea ice loss on shifting phytoplankton blooms in the Barents Sea |
title_short |
Role for Atlantic inflows and sea ice loss on shifting phytoplankton blooms in the Barents Sea |
title_full |
Role for Atlantic inflows and sea ice loss on shifting phytoplankton blooms in the Barents Sea |
title_fullStr |
Role for Atlantic inflows and sea ice loss on shifting phytoplankton blooms in the Barents Sea |
title_full_unstemmed |
Role for Atlantic inflows and sea ice loss on shifting phytoplankton blooms in the Barents Sea |
title_sort |
role for atlantic inflows and sea ice loss on shifting phytoplankton blooms in the barents sea |
publishDate |
2017 |
url |
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/259292 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea Sea ice |
genre_facet |
Barents Sea Sea ice |
op_source |
Journal of geophysical research. Oceans, 122 (6 |
op_relation |
uri/info:doi/10.1002/2016JC012582 uri/info:scp/85021321078 http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/259292 |
_version_ |
1766369479077396480 |