Phytoplankton composition in the subarctic North Pacific during autumn 2005
During a subarctic North Pacific cruise in autumn 2005, we investigated the similarities and differences between phytoplankton composition in the Alaskan Gyre (AG) and the Western Subarctic Gyre (WSG) using the chemotaxonomy program CHEMTAX, microscopy and flow cytometry. Chlorophyll a (Chl a) stand...
Published in: | Journal of Plankton Research |
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Oxford University Press
2009
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fthighwire:oai:open-archive.highwire.org:plankt:31/2/179 2023-05-15T18:27:57+02:00 Phytoplankton composition in the subarctic North Pacific during autumn 2005 Fujiki, Tetsuichi Matsumoto, Kazuhiko Honda, Makio C. Kawakami, Hajime Watanabe, Shuichi 2009-02-01 00:00:00.0 text/html http://plankt.oxfordjournals.org/cgi/content/short/31/2/179 https://doi.org/10.1093/plankt/fbn108 en eng Oxford University Press http://plankt.oxfordjournals.org/cgi/content/short/31/2/179 http://dx.doi.org/10.1093/plankt/fbn108 Copyright (C) 2009, Oxford University Press ORIGINAL ARTICLES TEXT 2009 fthighwire https://doi.org/10.1093/plankt/fbn108 2013-05-27T04:54:37Z During a subarctic North Pacific cruise in autumn 2005, we investigated the similarities and differences between phytoplankton composition in the Alaskan Gyre (AG) and the Western Subarctic Gyre (WSG) using the chemotaxonomy program CHEMTAX, microscopy and flow cytometry. Chlorophyll a (Chl a) standing stock was almost constant (21.5–31.4 mg m−2) throughout the two gyres. Prymnesiophytes were consistently the dominant group (21–50% of Chl a standing stock) in both gyres. Diatoms were a minor component of Chl a standing stock (<10%); however, abundances of large diatoms (Thalassiosira spp., Fragilariopsis spp. and Neodenticula seminae) were higher in the AG than in the WSG. In the AG, green algae (chlorophytes and prasinophytes) were secondary components of Chl a standing stock (16–35%). Pterosperma spp. (Prasinophyceae) partially contributed to the predominance of green algae in the AG. In the WSG, Synechococcus spp. accounted for 14–27% of Chl a standing stock; however, the abundance of Synechococcus spp. reached 11 × 1010 cells m−3 and was numerically much higher than that of eukaryotic plankton (<2 × 1010 cells m−3). The similarities and differences between phytoplankton composition in the AG and WSG will influence the biogeochemical processes and food web dynamics in the subarctic North Pacific. Text Subarctic HighWire Press (Stanford University) Pacific Journal of Plankton Research 31 2 179 191 |
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Open Polar |
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HighWire Press (Stanford University) |
op_collection_id |
fthighwire |
language |
English |
topic |
ORIGINAL ARTICLES |
spellingShingle |
ORIGINAL ARTICLES Fujiki, Tetsuichi Matsumoto, Kazuhiko Honda, Makio C. Kawakami, Hajime Watanabe, Shuichi Phytoplankton composition in the subarctic North Pacific during autumn 2005 |
topic_facet |
ORIGINAL ARTICLES |
description |
During a subarctic North Pacific cruise in autumn 2005, we investigated the similarities and differences between phytoplankton composition in the Alaskan Gyre (AG) and the Western Subarctic Gyre (WSG) using the chemotaxonomy program CHEMTAX, microscopy and flow cytometry. Chlorophyll a (Chl a) standing stock was almost constant (21.5–31.4 mg m−2) throughout the two gyres. Prymnesiophytes were consistently the dominant group (21–50% of Chl a standing stock) in both gyres. Diatoms were a minor component of Chl a standing stock (<10%); however, abundances of large diatoms (Thalassiosira spp., Fragilariopsis spp. and Neodenticula seminae) were higher in the AG than in the WSG. In the AG, green algae (chlorophytes and prasinophytes) were secondary components of Chl a standing stock (16–35%). Pterosperma spp. (Prasinophyceae) partially contributed to the predominance of green algae in the AG. In the WSG, Synechococcus spp. accounted for 14–27% of Chl a standing stock; however, the abundance of Synechococcus spp. reached 11 × 1010 cells m−3 and was numerically much higher than that of eukaryotic plankton (<2 × 1010 cells m−3). The similarities and differences between phytoplankton composition in the AG and WSG will influence the biogeochemical processes and food web dynamics in the subarctic North Pacific. |
format |
Text |
author |
Fujiki, Tetsuichi Matsumoto, Kazuhiko Honda, Makio C. Kawakami, Hajime Watanabe, Shuichi |
author_facet |
Fujiki, Tetsuichi Matsumoto, Kazuhiko Honda, Makio C. Kawakami, Hajime Watanabe, Shuichi |
author_sort |
Fujiki, Tetsuichi |
title |
Phytoplankton composition in the subarctic North Pacific during autumn 2005 |
title_short |
Phytoplankton composition in the subarctic North Pacific during autumn 2005 |
title_full |
Phytoplankton composition in the subarctic North Pacific during autumn 2005 |
title_fullStr |
Phytoplankton composition in the subarctic North Pacific during autumn 2005 |
title_full_unstemmed |
Phytoplankton composition in the subarctic North Pacific during autumn 2005 |
title_sort |
phytoplankton composition in the subarctic north pacific during autumn 2005 |
publisher |
Oxford University Press |
publishDate |
2009 |
url |
http://plankt.oxfordjournals.org/cgi/content/short/31/2/179 https://doi.org/10.1093/plankt/fbn108 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Subarctic |
genre_facet |
Subarctic |
op_relation |
http://plankt.oxfordjournals.org/cgi/content/short/31/2/179 http://dx.doi.org/10.1093/plankt/fbn108 |
op_rights |
Copyright (C) 2009, Oxford University Press |
op_doi |
https://doi.org/10.1093/plankt/fbn108 |
container_title |
Journal of Plankton Research |
container_volume |
31 |
container_issue |
2 |
container_start_page |
179 |
op_container_end_page |
191 |
_version_ |
1766210215646068736 |