Effect of seafloor depth on phytoplankton blooms in high-nitrate, low-chlorophyll (HNLC) regions
We calculated correlations between seafloor depth and phytoplankton blooms in all three main high-nitrate, low-chlorophyll (HNLC) regions, but with a particular focus on the subarctic North Pacific area. It has long been known that the central parts of the east and west subarctic North Pacific are H...
Published in: | Journal of Geophysical Research: Biogeosciences |
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Amer Geophysical Union
2005
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Online Access: | https://doi.org/10.1029/2005JG000041 https://archimer.ifremer.fr/doc/00232/34337/32758.pdf https://archimer.ifremer.fr/doc/00232/34337/ |
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fttriple:oai:gotriple.eu:10670/1.46eja4 2023-05-15T15:43:28+02:00 Effect of seafloor depth on phytoplankton blooms in high-nitrate, low-chlorophyll (HNLC) regions Tyrrell, T. Merico, A. Waniek, J. J. Wong, C. S. Metzl, N. Whitney, F. 2005-01-01 https://doi.org/10.1029/2005JG000041 https://archimer.ifremer.fr/doc/00232/34337/32758.pdf https://archimer.ifremer.fr/doc/00232/34337/ en eng Amer Geophysical Union doi:10.1029/2005JG000041 10670/1.46eja4 https://archimer.ifremer.fr/doc/00232/34337/32758.pdf https://archimer.ifremer.fr/doc/00232/34337/ other Archimer, archive institutionnelle de l'Ifremer Journal Of Geophysical Research-biogeosciences (2169-8953) (Amer Geophysical Union), 2005-11 , Vol. 110 , N. G02007 , P. 1-12 envir geo Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ 2005 fttriple https://doi.org/10.1029/2005JG000041 2023-01-22T16:39:40Z We calculated correlations between seafloor depth and phytoplankton blooms in all three main high-nitrate, low-chlorophyll (HNLC) regions, but with a particular focus on the subarctic North Pacific area. It has long been known that the central parts of the east and west subarctic North Pacific are HNLC regions. The deep western basin of the Bering Sea is also HNLC, whereas the wide continental shelf of the eastern Bering Sea is not. We carried out a statistical comparison of spatial maps of (1) seafloor depth and (2) chlorophyll a concentration from satellite data. This comparison reveals that shallow waters have, on average, higher peak chlorophyll a concentrations (more intense phytoplankton blooms) than deep waters (p << 0.01). Possible artifacts of the satellite data are considered but it is concluded that the signal is genuine, in part because the same patterns are found in in situ data. There are several possible explanations for the observed correlation; the most probable, we suggest, is that iron diffusing out of the seafloor causes alleviation of iron limitation in shallow waters. Text Bering Sea Subarctic Unknown Bering Sea Pacific Western Basin Journal of Geophysical Research: Biogeosciences 110 G2 n/a n/a |
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envir geo Tyrrell, T. Merico, A. Waniek, J. J. Wong, C. S. Metzl, N. Whitney, F. Effect of seafloor depth on phytoplankton blooms in high-nitrate, low-chlorophyll (HNLC) regions |
topic_facet |
envir geo |
description |
We calculated correlations between seafloor depth and phytoplankton blooms in all three main high-nitrate, low-chlorophyll (HNLC) regions, but with a particular focus on the subarctic North Pacific area. It has long been known that the central parts of the east and west subarctic North Pacific are HNLC regions. The deep western basin of the Bering Sea is also HNLC, whereas the wide continental shelf of the eastern Bering Sea is not. We carried out a statistical comparison of spatial maps of (1) seafloor depth and (2) chlorophyll a concentration from satellite data. This comparison reveals that shallow waters have, on average, higher peak chlorophyll a concentrations (more intense phytoplankton blooms) than deep waters (p << 0.01). Possible artifacts of the satellite data are considered but it is concluded that the signal is genuine, in part because the same patterns are found in in situ data. There are several possible explanations for the observed correlation; the most probable, we suggest, is that iron diffusing out of the seafloor causes alleviation of iron limitation in shallow waters. |
format |
Text |
author |
Tyrrell, T. Merico, A. Waniek, J. J. Wong, C. S. Metzl, N. Whitney, F. |
author_facet |
Tyrrell, T. Merico, A. Waniek, J. J. Wong, C. S. Metzl, N. Whitney, F. |
author_sort |
Tyrrell, T. |
title |
Effect of seafloor depth on phytoplankton blooms in high-nitrate, low-chlorophyll (HNLC) regions |
title_short |
Effect of seafloor depth on phytoplankton blooms in high-nitrate, low-chlorophyll (HNLC) regions |
title_full |
Effect of seafloor depth on phytoplankton blooms in high-nitrate, low-chlorophyll (HNLC) regions |
title_fullStr |
Effect of seafloor depth on phytoplankton blooms in high-nitrate, low-chlorophyll (HNLC) regions |
title_full_unstemmed |
Effect of seafloor depth on phytoplankton blooms in high-nitrate, low-chlorophyll (HNLC) regions |
title_sort |
effect of seafloor depth on phytoplankton blooms in high-nitrate, low-chlorophyll (hnlc) regions |
publisher |
Amer Geophysical Union |
publishDate |
2005 |
url |
https://doi.org/10.1029/2005JG000041 https://archimer.ifremer.fr/doc/00232/34337/32758.pdf https://archimer.ifremer.fr/doc/00232/34337/ |
geographic |
Bering Sea Pacific Western Basin |
geographic_facet |
Bering Sea Pacific Western Basin |
genre |
Bering Sea Subarctic |
genre_facet |
Bering Sea Subarctic |
op_source |
Archimer, archive institutionnelle de l'Ifremer Journal Of Geophysical Research-biogeosciences (2169-8953) (Amer Geophysical Union), 2005-11 , Vol. 110 , N. G02007 , P. 1-12 |
op_relation |
doi:10.1029/2005JG000041 10670/1.46eja4 https://archimer.ifremer.fr/doc/00232/34337/32758.pdf https://archimer.ifremer.fr/doc/00232/34337/ |
op_rights |
other |
op_doi |
https://doi.org/10.1029/2005JG000041 |
container_title |
Journal of Geophysical Research: Biogeosciences |
container_volume |
110 |
container_issue |
G2 |
container_start_page |
n/a |
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n/a |
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1766377629595729920 |