Influence of the physical environment on polar phytoplankton blooms: A case study in the Fram Strait
The Fram Strait is the main gateway for water, heat and sea-ice exchanges between the Arctic Ocean and the North Atlantic. The complex physical environment results in a highly variable primary production in space and time. Previous regional studies have defined key bottom-up (ice cover and stratific...
Published in: | Journal of Marine Systems |
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Elsevier
2014
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Online Access: | https://oceanrep.geomar.de/id/eprint/28004/ https://oceanrep.geomar.de/id/eprint/28004/1/2014_Cherkasheva-etal-Influence_JMS-132_1-s2.0-S0924796313002649-main.pdf https://doi.org/10.1016/j.jmarsys.2013.11.008 |
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ftoceanrep:oai:oceanrep.geomar.de:28004 2023-05-15T15:15:21+02:00 Influence of the physical environment on polar phytoplankton blooms: A case study in the Fram Strait Cherkasheva, A. Bracher, A. Melsheimer, C. Köberle, Cornelia Gerdes, Rüdiger Nöthig, E.-M. Bauerfeind, Eduard Boetius, Antje 2014 text https://oceanrep.geomar.de/id/eprint/28004/ https://oceanrep.geomar.de/id/eprint/28004/1/2014_Cherkasheva-etal-Influence_JMS-132_1-s2.0-S0924796313002649-main.pdf https://doi.org/10.1016/j.jmarsys.2013.11.008 en eng Elsevier https://oceanrep.geomar.de/id/eprint/28004/1/2014_Cherkasheva-etal-Influence_JMS-132_1-s2.0-S0924796313002649-main.pdf Cherkasheva, A., Bracher, A., Melsheimer, C., Köberle, C., Gerdes, R., Nöthig, E. M., Bauerfeind, E. and Boetius, A. (2014) Influence of the physical environment on polar phytoplankton blooms: A case study in the Fram Strait. Journal of Marine Systems, 132 (April). pp. 196-207. DOI 10.1016/j.jmarsys.2013.11.008 <https://doi.org/10.1016/j.jmarsys.2013.11.008>. doi:10.1016/j.jmarsys.2013.11.008 cc_by_nc_nd Article PeerReviewed 2014 ftoceanrep https://doi.org/10.1016/j.jmarsys.2013.11.008 2023-04-07T15:18:21Z The Fram Strait is the main gateway for water, heat and sea-ice exchanges between the Arctic Ocean and the North Atlantic. The complex physical environment results in a highly variable primary production in space and time. Previous regional studies have defined key bottom-up (ice cover and stratification from melt water controlling the light availability, and wind mixing and water transport affecting the supply of nutrients) and top-down processes (heterotrophic grazing). In this study, in situ field data, remote sensing and modeling techniques were combined to investigate in detail the influence of melting sea-ice and ocean properties on the development of phytoplankton blooms in the Fram Strait region for the years 1998–2009. Satellite-retrieved chlorophyll-a concentrations from temporarily ice-free zones were validated with contextual field data. These were then integrated per month on a grid size of 20 × 20 km, resulting in 10 grids/fields. Factors tested for their influence on spatial and temporal variation of chlorophyll-a were: sea-ice concentration from satellite and sea-ice thickness, ocean stratification, water temperature and salinity time-series simulated by the ice-ocean model NAOSIM. The time series analysis for those ten ice-free fields showed a regional separation according to different physical processes affecting phytoplankton distribution. At the marginal ice zone the melting sea-ice was promoting phytoplankton growth by stratifying the water column and potentially seeding phytoplankton communities. In this zone, the highest mean chlorophyll concentration averaged for the productive season (April–August) of 0.8 mgC/m3 was observed. In the open ocean the phytoplankton variability was correlated highest to stratification formed by solar heating of the upper ocean layers. Coastal zone around Svalbard showed processes associated with the presence of coastal ice were rather suppressing than promoting the phytoplankton growth. During the twelve years of observations, chlorophyll concentrations ... Article in Journal/Newspaper Arctic Arctic Ocean Fram Strait North Atlantic Phytoplankton Sea ice Svalbard OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Arctic Ocean Svalbard Journal of Marine Systems 132 196 207 |
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Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The Fram Strait is the main gateway for water, heat and sea-ice exchanges between the Arctic Ocean and the North Atlantic. The complex physical environment results in a highly variable primary production in space and time. Previous regional studies have defined key bottom-up (ice cover and stratification from melt water controlling the light availability, and wind mixing and water transport affecting the supply of nutrients) and top-down processes (heterotrophic grazing). In this study, in situ field data, remote sensing and modeling techniques were combined to investigate in detail the influence of melting sea-ice and ocean properties on the development of phytoplankton blooms in the Fram Strait region for the years 1998–2009. Satellite-retrieved chlorophyll-a concentrations from temporarily ice-free zones were validated with contextual field data. These were then integrated per month on a grid size of 20 × 20 km, resulting in 10 grids/fields. Factors tested for their influence on spatial and temporal variation of chlorophyll-a were: sea-ice concentration from satellite and sea-ice thickness, ocean stratification, water temperature and salinity time-series simulated by the ice-ocean model NAOSIM. The time series analysis for those ten ice-free fields showed a regional separation according to different physical processes affecting phytoplankton distribution. At the marginal ice zone the melting sea-ice was promoting phytoplankton growth by stratifying the water column and potentially seeding phytoplankton communities. In this zone, the highest mean chlorophyll concentration averaged for the productive season (April–August) of 0.8 mgC/m3 was observed. In the open ocean the phytoplankton variability was correlated highest to stratification formed by solar heating of the upper ocean layers. Coastal zone around Svalbard showed processes associated with the presence of coastal ice were rather suppressing than promoting the phytoplankton growth. During the twelve years of observations, chlorophyll concentrations ... |
format |
Article in Journal/Newspaper |
author |
Cherkasheva, A. Bracher, A. Melsheimer, C. Köberle, Cornelia Gerdes, Rüdiger Nöthig, E.-M. Bauerfeind, Eduard Boetius, Antje |
spellingShingle |
Cherkasheva, A. Bracher, A. Melsheimer, C. Köberle, Cornelia Gerdes, Rüdiger Nöthig, E.-M. Bauerfeind, Eduard Boetius, Antje Influence of the physical environment on polar phytoplankton blooms: A case study in the Fram Strait |
author_facet |
Cherkasheva, A. Bracher, A. Melsheimer, C. Köberle, Cornelia Gerdes, Rüdiger Nöthig, E.-M. Bauerfeind, Eduard Boetius, Antje |
author_sort |
Cherkasheva, A. |
title |
Influence of the physical environment on polar phytoplankton blooms: A case study in the Fram Strait |
title_short |
Influence of the physical environment on polar phytoplankton blooms: A case study in the Fram Strait |
title_full |
Influence of the physical environment on polar phytoplankton blooms: A case study in the Fram Strait |
title_fullStr |
Influence of the physical environment on polar phytoplankton blooms: A case study in the Fram Strait |
title_full_unstemmed |
Influence of the physical environment on polar phytoplankton blooms: A case study in the Fram Strait |
title_sort |
influence of the physical environment on polar phytoplankton blooms: a case study in the fram strait |
publisher |
Elsevier |
publishDate |
2014 |
url |
https://oceanrep.geomar.de/id/eprint/28004/ https://oceanrep.geomar.de/id/eprint/28004/1/2014_Cherkasheva-etal-Influence_JMS-132_1-s2.0-S0924796313002649-main.pdf https://doi.org/10.1016/j.jmarsys.2013.11.008 |
geographic |
Arctic Arctic Ocean Svalbard |
geographic_facet |
Arctic Arctic Ocean Svalbard |
genre |
Arctic Arctic Ocean Fram Strait North Atlantic Phytoplankton Sea ice Svalbard |
genre_facet |
Arctic Arctic Ocean Fram Strait North Atlantic Phytoplankton Sea ice Svalbard |
op_relation |
https://oceanrep.geomar.de/id/eprint/28004/1/2014_Cherkasheva-etal-Influence_JMS-132_1-s2.0-S0924796313002649-main.pdf Cherkasheva, A., Bracher, A., Melsheimer, C., Köberle, C., Gerdes, R., Nöthig, E. M., Bauerfeind, E. and Boetius, A. (2014) Influence of the physical environment on polar phytoplankton blooms: A case study in the Fram Strait. Journal of Marine Systems, 132 (April). pp. 196-207. DOI 10.1016/j.jmarsys.2013.11.008 <https://doi.org/10.1016/j.jmarsys.2013.11.008>. doi:10.1016/j.jmarsys.2013.11.008 |
op_rights |
cc_by_nc_nd |
op_doi |
https://doi.org/10.1016/j.jmarsys.2013.11.008 |
container_title |
Journal of Marine Systems |
container_volume |
132 |
container_start_page |
196 |
op_container_end_page |
207 |
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1766345714025103360 |