| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Effect of seafloor depth on phytoplankton blooms in high-nitrate, low-chlorophyll (HNLC) regions
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| Autores: |
Tyrrell, T.
Merico, A.
Waniek, J. J.
Wong, C. S.
Metzl, N.
Whitney, F.
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| Data: |
2005-11
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| Ano: |
2005
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| Palavras-chave: |
Phytoplankton
Ocean color
Bathymetry
HNLC
North Pacific
Iron
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| Resumo: |
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.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00232/34337/32758.pdf
DOI:10.1029/2005JG000041
https://archimer.ifremer.fr/doc/00232/34337/
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| Editor: |
Amer Geophysical Union
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| Formato: |
application/pdf
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| Fonte: |
Journal Of Geophysical Research-biogeosciences (2169-8953) (Amer Geophysical Union), 2005-11 , Vol. 110 , N. G02007 , P. 1-12
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| Direitos: |
Copyright 2005 by the American Geophysical Union.
info:eu-repo/semantics/openAccess
restricted use
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