Fatty acid dynamics during the spring bloom in a High Arctic fjord: importance of abiotic factors versus community changes
We followed the fatty acid composition of particulate organic matter (POM) in a High Arctic fjord (79°N; Svalbard, Norway) during and after the spring bloom. The content of essential polyunsaturated fatty acids (PUFAs) was highest (45% of total fatty acids) at the beginning of the bloom, well before...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Online Access: | http://dx.doi.org/10.1139/f06-159 http://www.nrcresearchpress.com/doi/pdf/10.1139/f06-159 |
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crcansciencepubl:10.1139/f06-159 2024-09-09T19:22:52+00:00 Fatty acid dynamics during the spring bloom in a High Arctic fjord: importance of abiotic factors versus community changes Leu, Eva Falk-Petersen, Stig Kwaśniewski, Slawomir Wulff, Angela Edvardsen, Kåre Hessen, Dag O 2006 http://dx.doi.org/10.1139/f06-159 http://www.nrcresearchpress.com/doi/pdf/10.1139/f06-159 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Fisheries and Aquatic Sciences volume 63, issue 12, page 2760-2779 ISSN 0706-652X 1205-7533 journal-article 2006 crcansciencepubl https://doi.org/10.1139/f06-159 2024-07-25T04:10:08Z We followed the fatty acid composition of particulate organic matter (POM) in a High Arctic fjord (79°N; Svalbard, Norway) during and after the spring bloom. The content of essential polyunsaturated fatty acids (PUFAs) was highest (45% of total fatty acids) at the beginning of the bloom, well before the biomass maximum, and decreased linearly towards the end (30%). During the postbloom period, the concentrations of PUFAs remained stable, between 25% and 30%. Redundancy analysis was used to identify the environmental factors that explained the observed variability in the fatty acid composition of phytoplankton. A particular emphasis was put on the potential influence of high irradiances. During the spring bloom, nutrient availability (Si and N), as well as shifts in phytoplankton community composition and chlorophyll a, were shown to account for much of the pattern in fatty acid composition. During the postbloom period, particularly during periods of stratification, light had a pronounced effect on the fatty acid composition. In general, we found a decrease in the relative amount of PUFAs under high light intensities and nutrient limitation. Article in Journal/Newspaper Arctic Phytoplankton Svalbard Canadian Science Publishing Arctic Norway Svalbard Canadian Journal of Fisheries and Aquatic Sciences 63 12 2760 2779 |
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Open Polar |
collection |
Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
We followed the fatty acid composition of particulate organic matter (POM) in a High Arctic fjord (79°N; Svalbard, Norway) during and after the spring bloom. The content of essential polyunsaturated fatty acids (PUFAs) was highest (45% of total fatty acids) at the beginning of the bloom, well before the biomass maximum, and decreased linearly towards the end (30%). During the postbloom period, the concentrations of PUFAs remained stable, between 25% and 30%. Redundancy analysis was used to identify the environmental factors that explained the observed variability in the fatty acid composition of phytoplankton. A particular emphasis was put on the potential influence of high irradiances. During the spring bloom, nutrient availability (Si and N), as well as shifts in phytoplankton community composition and chlorophyll a, were shown to account for much of the pattern in fatty acid composition. During the postbloom period, particularly during periods of stratification, light had a pronounced effect on the fatty acid composition. In general, we found a decrease in the relative amount of PUFAs under high light intensities and nutrient limitation. |
format |
Article in Journal/Newspaper |
author |
Leu, Eva Falk-Petersen, Stig Kwaśniewski, Slawomir Wulff, Angela Edvardsen, Kåre Hessen, Dag O |
spellingShingle |
Leu, Eva Falk-Petersen, Stig Kwaśniewski, Slawomir Wulff, Angela Edvardsen, Kåre Hessen, Dag O Fatty acid dynamics during the spring bloom in a High Arctic fjord: importance of abiotic factors versus community changes |
author_facet |
Leu, Eva Falk-Petersen, Stig Kwaśniewski, Slawomir Wulff, Angela Edvardsen, Kåre Hessen, Dag O |
author_sort |
Leu, Eva |
title |
Fatty acid dynamics during the spring bloom in a High Arctic fjord: importance of abiotic factors versus community changes |
title_short |
Fatty acid dynamics during the spring bloom in a High Arctic fjord: importance of abiotic factors versus community changes |
title_full |
Fatty acid dynamics during the spring bloom in a High Arctic fjord: importance of abiotic factors versus community changes |
title_fullStr |
Fatty acid dynamics during the spring bloom in a High Arctic fjord: importance of abiotic factors versus community changes |
title_full_unstemmed |
Fatty acid dynamics during the spring bloom in a High Arctic fjord: importance of abiotic factors versus community changes |
title_sort |
fatty acid dynamics during the spring bloom in a high arctic fjord: importance of abiotic factors versus community changes |
publisher |
Canadian Science Publishing |
publishDate |
2006 |
url |
http://dx.doi.org/10.1139/f06-159 http://www.nrcresearchpress.com/doi/pdf/10.1139/f06-159 |
geographic |
Arctic Norway Svalbard |
geographic_facet |
Arctic Norway Svalbard |
genre |
Arctic Phytoplankton Svalbard |
genre_facet |
Arctic Phytoplankton Svalbard |
op_source |
Canadian Journal of Fisheries and Aquatic Sciences volume 63, issue 12, page 2760-2779 ISSN 0706-652X 1205-7533 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/f06-159 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
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63 |
container_issue |
12 |
container_start_page |
2760 |
op_container_end_page |
2779 |
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1809763210502340608 |