Photosynthetic parameters of arctic marine phytoplankton: Vertical variations and time scales of adaptation
In the eastern Canadian arctic the photosynthesis‐irradiance curves of phytoplankton from the 50% and 1% light levels differ mainly in their susceptibility to photoinhibition. The photoinhibition parameters of deep populations and the intensity of the deep chlorophyll maximum were correlated with N...
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crwiley:10.4319/lo.1983.28.4.0698 2024-09-15T18:30:32+00:00 Photosynthetic parameters of arctic marine phytoplankton: Vertical variations and time scales of adaptation Gallegos, Charles L. Platt, Trevor Harrison, W. G. Irwin, Brian 1983 http://dx.doi.org/10.4319/lo.1983.28.4.0698 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1983.28.4.0698 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1983.28.4.0698 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 28, issue 4, page 698-708 ISSN 0024-3590 1939-5590 journal-article 1983 crwiley https://doi.org/10.4319/lo.1983.28.4.0698 2024-07-02T04:10:36Z In the eastern Canadian arctic the photosynthesis‐irradiance curves of phytoplankton from the 50% and 1% light levels differ mainly in their susceptibility to photoinhibition. The photoinhibition parameters of deep populations and the intensity of the deep chlorophyll maximum were correlated with N 2 , the bulk stratification parameter of the water column. Comparison of data from the same region in different periods suggests that the characteristic susceptibility to photoinhibition requires 2–6 weeks to develop once a population is isolated below a pycnocline. Insensitivity to photoinhibition developed much more quickly when a population from the chlorophyll maximum was exposed to surface light. The threshold of photoinhibition increased rapidly, reaching surface intensities within 4–6 h. The adaptation is sufficiently rapid that phytoplankton from the chlorophyll maximum should be stressed only briefly when transported to the surface by a mixed‐layer‐deepening event. Article in Journal/Newspaper Phytoplankton Wiley Online Library Limnology and Oceanography 28 4 698 708 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
In the eastern Canadian arctic the photosynthesis‐irradiance curves of phytoplankton from the 50% and 1% light levels differ mainly in their susceptibility to photoinhibition. The photoinhibition parameters of deep populations and the intensity of the deep chlorophyll maximum were correlated with N 2 , the bulk stratification parameter of the water column. Comparison of data from the same region in different periods suggests that the characteristic susceptibility to photoinhibition requires 2–6 weeks to develop once a population is isolated below a pycnocline. Insensitivity to photoinhibition developed much more quickly when a population from the chlorophyll maximum was exposed to surface light. The threshold of photoinhibition increased rapidly, reaching surface intensities within 4–6 h. The adaptation is sufficiently rapid that phytoplankton from the chlorophyll maximum should be stressed only briefly when transported to the surface by a mixed‐layer‐deepening event. |
format |
Article in Journal/Newspaper |
author |
Gallegos, Charles L. Platt, Trevor Harrison, W. G. Irwin, Brian |
spellingShingle |
Gallegos, Charles L. Platt, Trevor Harrison, W. G. Irwin, Brian Photosynthetic parameters of arctic marine phytoplankton: Vertical variations and time scales of adaptation |
author_facet |
Gallegos, Charles L. Platt, Trevor Harrison, W. G. Irwin, Brian |
author_sort |
Gallegos, Charles L. |
title |
Photosynthetic parameters of arctic marine phytoplankton: Vertical variations and time scales of adaptation |
title_short |
Photosynthetic parameters of arctic marine phytoplankton: Vertical variations and time scales of adaptation |
title_full |
Photosynthetic parameters of arctic marine phytoplankton: Vertical variations and time scales of adaptation |
title_fullStr |
Photosynthetic parameters of arctic marine phytoplankton: Vertical variations and time scales of adaptation |
title_full_unstemmed |
Photosynthetic parameters of arctic marine phytoplankton: Vertical variations and time scales of adaptation |
title_sort |
photosynthetic parameters of arctic marine phytoplankton: vertical variations and time scales of adaptation |
publisher |
Wiley |
publishDate |
1983 |
url |
http://dx.doi.org/10.4319/lo.1983.28.4.0698 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1983.28.4.0698 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1983.28.4.0698 |
genre |
Phytoplankton |
genre_facet |
Phytoplankton |
op_source |
Limnology and Oceanography volume 28, issue 4, page 698-708 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.1983.28.4.0698 |
container_title |
Limnology and Oceanography |
container_volume |
28 |
container_issue |
4 |
container_start_page |
698 |
op_container_end_page |
708 |
_version_ |
1810471993223413760 |