Photosynthetic parameters in the Beaufort Sea in relation to the phytoplankton community structure
To model phytoplankton primary production from remotely sensed data, a method to estimate photosynthetic parameters describing the photosynthetic rates per unit biomass is required. Variability in these parameters must be related to environmental variables that are measurable remotely. In the Arctic...
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ftdoajarticles:oai:doaj.org/article:f1847a0890934974ad4087f2b4088595 2023-05-15T15:08:58+02:00 Photosynthetic parameters in the Beaufort Sea in relation to the phytoplankton community structure Y. Huot M. Babin F. Bruyant 2013-05-01T00:00:00Z https://doi.org/10.5194/bg-10-3445-2013 https://doaj.org/article/f1847a0890934974ad4087f2b4088595 EN eng Copernicus Publications http://www.biogeosciences.net/10/3445/2013/bg-10-3445-2013.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-10-3445-2013 1726-4170 1726-4189 https://doaj.org/article/f1847a0890934974ad4087f2b4088595 Biogeosciences, Vol 10, Iss 5, Pp 3445-3454 (2013) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2013 ftdoajarticles https://doi.org/10.5194/bg-10-3445-2013 2022-12-31T12:42:48Z To model phytoplankton primary production from remotely sensed data, a method to estimate photosynthetic parameters describing the photosynthetic rates per unit biomass is required. Variability in these parameters must be related to environmental variables that are measurable remotely. In the Arctic, a limited number of measurements of photosynthetic parameters have been carried out with the concurrent environmental variables needed. Such measurements and their relationship to environmental variables will be required to improve the accuracy of remotely sensed estimates of phytoplankton primary production and our ability to predict future changes. During the MALINA cruise, a large dataset of these parameters was obtained. Together with previously published datasets, we use environmental and trophic variables to provide functional relationships for these parameters. In particular, we describe several specific aspects: the maximum rate of photosynthesis ( P max chl ) normalized to chlorophyll decreases with depth and is higher for communities composed of large cells; the saturation parameter ( E k ) decreases with depth but is independent of the community structure; and the initial slope of the photosynthesis versus irradiance curve ( α chl ) normalized to chlorophyll is independent of depth but is higher for communities composed of larger cells. The photosynthetic parameters were not influenced by temperature over the range encountered during the cruise (−2 to 8 °C). Article in Journal/Newspaper Arctic Beaufort Sea Phytoplankton Directory of Open Access Journals: DOAJ Articles Arctic Biogeosciences 10 5 3445 3454 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 Y. Huot M. Babin F. Bruyant Photosynthetic parameters in the Beaufort Sea in relation to the phytoplankton community structure |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
To model phytoplankton primary production from remotely sensed data, a method to estimate photosynthetic parameters describing the photosynthetic rates per unit biomass is required. Variability in these parameters must be related to environmental variables that are measurable remotely. In the Arctic, a limited number of measurements of photosynthetic parameters have been carried out with the concurrent environmental variables needed. Such measurements and their relationship to environmental variables will be required to improve the accuracy of remotely sensed estimates of phytoplankton primary production and our ability to predict future changes. During the MALINA cruise, a large dataset of these parameters was obtained. Together with previously published datasets, we use environmental and trophic variables to provide functional relationships for these parameters. In particular, we describe several specific aspects: the maximum rate of photosynthesis ( P max chl ) normalized to chlorophyll decreases with depth and is higher for communities composed of large cells; the saturation parameter ( E k ) decreases with depth but is independent of the community structure; and the initial slope of the photosynthesis versus irradiance curve ( α chl ) normalized to chlorophyll is independent of depth but is higher for communities composed of larger cells. The photosynthetic parameters were not influenced by temperature over the range encountered during the cruise (−2 to 8 °C). |
format |
Article in Journal/Newspaper |
author |
Y. Huot M. Babin F. Bruyant |
author_facet |
Y. Huot M. Babin F. Bruyant |
author_sort |
Y. Huot |
title |
Photosynthetic parameters in the Beaufort Sea in relation to the phytoplankton community structure |
title_short |
Photosynthetic parameters in the Beaufort Sea in relation to the phytoplankton community structure |
title_full |
Photosynthetic parameters in the Beaufort Sea in relation to the phytoplankton community structure |
title_fullStr |
Photosynthetic parameters in the Beaufort Sea in relation to the phytoplankton community structure |
title_full_unstemmed |
Photosynthetic parameters in the Beaufort Sea in relation to the phytoplankton community structure |
title_sort |
photosynthetic parameters in the beaufort sea in relation to the phytoplankton community structure |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/bg-10-3445-2013 https://doaj.org/article/f1847a0890934974ad4087f2b4088595 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Beaufort Sea Phytoplankton |
genre_facet |
Arctic Beaufort Sea Phytoplankton |
op_source |
Biogeosciences, Vol 10, Iss 5, Pp 3445-3454 (2013) |
op_relation |
http://www.biogeosciences.net/10/3445/2013/bg-10-3445-2013.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-10-3445-2013 1726-4170 1726-4189 https://doaj.org/article/f1847a0890934974ad4087f2b4088595 |
op_doi |
https://doi.org/10.5194/bg-10-3445-2013 |
container_title |
Biogeosciences |
container_volume |
10 |
container_issue |
5 |
container_start_page |
3445 |
op_container_end_page |
3454 |
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1766340227144613888 |