Implications of bio‐optical modeling of phytoplankton photosynthesis in Antarctic waters: Further evidence of no light limitation in the Bransfield Strait
During the cruise ECOANTAR 94 photosynthesis versus irradiance relationships, phytoplankton spectral absorption, quantum yield of carbon fixation, and water column light regime were determined in the eastern Bransfield Strait and surrounding areas of the Weddell Sea and Weddell‐Scotia Confluence, to...
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crwiley:10.4319/lo.1999.44.7.1599 2023-12-03T10:12:52+01:00 Implications of bio‐optical modeling of phytoplankton photosynthesis in Antarctic waters: Further evidence of no light limitation in the Bransfield Strait Figueiras, Francisco G. Arbones, Belén Estrada, Marta 1999 http://dx.doi.org/10.4319/lo.1999.44.7.1599 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1999.44.7.1599 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1999.44.7.1599 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 44, issue 7, page 1599-1608 ISSN 0024-3590 1939-5590 Aquatic Science Oceanography journal-article 1999 crwiley https://doi.org/10.4319/lo.1999.44.7.1599 2023-11-09T14:33:16Z During the cruise ECOANTAR 94 photosynthesis versus irradiance relationships, phytoplankton spectral absorption, quantum yield of carbon fixation, and water column light regime were determined in the eastern Bransfield Strait and surrounding areas of the Weddell Sea and Weddell‐Scotia Confluence, to determine if photosynthesis is light limited in these areas. There were no significant differences in the light‐saturated chlorophyll‐specific rate of photosynthesis ( P B m ), light‐limited slope (± B ), light saturation parameter ( E kPAR ), and the maximum quantum yield ( Φ m ) between surface and subsurface water for several water masses in the area, which indicates that the photosynthetic response in the upper mixed layer was uniform. There were also no significant differences between the spectral light saturation parameter ( E kPUR ) and the mean absorbed irradiance by phytoplankton in the upper mixed layer ( E umlPUR ). These similarities suggest that phytoplankton photosynthesis was not light limited in this Antarctic region during the cruise period. This was also affirmed by the fact that the average operational quantum yield of the water column (0.03 mol C [mol photons] −1 ) was half of the mean maximum quantum yield (0.06 mol C [mol photons] −1 ). Primary production is underestimated by 24% when broadband models are compared with spectral ones. These results have important implications for the modeling of carbon flows in the Southern Ocean. Article in Journal/Newspaper Antarc* Antarctic Bransfield Strait Southern Ocean Weddell Sea Wiley Online Library (via Crossref) Antarctic Southern Ocean Weddell Sea Bransfield Strait Weddell Limnology and Oceanography 44 7 1599 1608 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Oceanography |
spellingShingle |
Aquatic Science Oceanography Figueiras, Francisco G. Arbones, Belén Estrada, Marta Implications of bio‐optical modeling of phytoplankton photosynthesis in Antarctic waters: Further evidence of no light limitation in the Bransfield Strait |
topic_facet |
Aquatic Science Oceanography |
description |
During the cruise ECOANTAR 94 photosynthesis versus irradiance relationships, phytoplankton spectral absorption, quantum yield of carbon fixation, and water column light regime were determined in the eastern Bransfield Strait and surrounding areas of the Weddell Sea and Weddell‐Scotia Confluence, to determine if photosynthesis is light limited in these areas. There were no significant differences in the light‐saturated chlorophyll‐specific rate of photosynthesis ( P B m ), light‐limited slope (± B ), light saturation parameter ( E kPAR ), and the maximum quantum yield ( Φ m ) between surface and subsurface water for several water masses in the area, which indicates that the photosynthetic response in the upper mixed layer was uniform. There were also no significant differences between the spectral light saturation parameter ( E kPUR ) and the mean absorbed irradiance by phytoplankton in the upper mixed layer ( E umlPUR ). These similarities suggest that phytoplankton photosynthesis was not light limited in this Antarctic region during the cruise period. This was also affirmed by the fact that the average operational quantum yield of the water column (0.03 mol C [mol photons] −1 ) was half of the mean maximum quantum yield (0.06 mol C [mol photons] −1 ). Primary production is underestimated by 24% when broadband models are compared with spectral ones. These results have important implications for the modeling of carbon flows in the Southern Ocean. |
format |
Article in Journal/Newspaper |
author |
Figueiras, Francisco G. Arbones, Belén Estrada, Marta |
author_facet |
Figueiras, Francisco G. Arbones, Belén Estrada, Marta |
author_sort |
Figueiras, Francisco G. |
title |
Implications of bio‐optical modeling of phytoplankton photosynthesis in Antarctic waters: Further evidence of no light limitation in the Bransfield Strait |
title_short |
Implications of bio‐optical modeling of phytoplankton photosynthesis in Antarctic waters: Further evidence of no light limitation in the Bransfield Strait |
title_full |
Implications of bio‐optical modeling of phytoplankton photosynthesis in Antarctic waters: Further evidence of no light limitation in the Bransfield Strait |
title_fullStr |
Implications of bio‐optical modeling of phytoplankton photosynthesis in Antarctic waters: Further evidence of no light limitation in the Bransfield Strait |
title_full_unstemmed |
Implications of bio‐optical modeling of phytoplankton photosynthesis in Antarctic waters: Further evidence of no light limitation in the Bransfield Strait |
title_sort |
implications of bio‐optical modeling of phytoplankton photosynthesis in antarctic waters: further evidence of no light limitation in the bransfield strait |
publisher |
Wiley |
publishDate |
1999 |
url |
http://dx.doi.org/10.4319/lo.1999.44.7.1599 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1999.44.7.1599 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1999.44.7.1599 |
geographic |
Antarctic Southern Ocean Weddell Sea Bransfield Strait Weddell |
geographic_facet |
Antarctic Southern Ocean Weddell Sea Bransfield Strait Weddell |
genre |
Antarc* Antarctic Bransfield Strait Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Bransfield Strait Southern Ocean Weddell Sea |
op_source |
Limnology and Oceanography volume 44, issue 7, page 1599-1608 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.1999.44.7.1599 |
container_title |
Limnology and Oceanography |
container_volume |
44 |
container_issue |
7 |
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1599 |
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1608 |
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1784259501049774080 |