| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Planktonic ecosystems in the channel - trophic relations
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| Autores: |
Lehoerff, Genevieve
Erard-le Denn, Evelyne
Arzul, Genevieve
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| Data: |
1993
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| Ano: |
1993
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| Palavras-chave: |
CHANNEL
COASTAL WATER ECOSYSTEM
PLANKTONIC BIOMASS
TROPHIC EFFICIENCY
IMPACT
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| Resumo: |
Four planktonic coastal ecosystems from the western Channel to the southern part of the North Sea have been compared. The characteristics of the south of the North Sea are a very high planktonic biomass with an annual maximum value of 45 mg C m-3 h-1 for primary production, a maximum of 11 mg m-3 for Chlorophyll a and 60 mg C m-3 for zooplanktonic biomass (expressed in term of carbon weight), linked with an oscillating ecosystem. In the western Channel primary production shows an annual maximum value of 8 mg C m-3 h-1, die chlorophyll a, a maximum of 2.5 mg m-3 and zooplanktonic carbon weight of 14 mg C m-3 linked to a greater inertia in the system. Turnover is faster in the north. Trophic efficiency ratios have been calculated and linked to hydrodynamic conditions and currents. The impacts of a thermal perturbation from a nuclear power plant effluent (DT 11-degrees - 15-degrees-C) applied to ecosystems are compared.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/00100/21130/18750.pdf
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| Editor: |
Gauthier-Villars
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| Relação: |
http://archimer.ifremer.fr/doc/00100/21130/
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| Formato: |
application/pdf
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| Fonte: |
Oceanologica Acta (0399-1784) (Gauthier-Villars), 1993 , Vol. 16 , N. 5-6 , P. 661-670
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