| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
New observations on the eutrophication of the Gulf of Lion due to the nutrient input by the Rhone River
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| Autores: |
Coste, A
Cadenes, A
Minas, H
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| Data: |
1984-11
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| Ano: |
1984
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| Palavras-chave: |
France
Rhone R. Nutrient cycles Primary production River discharge Nutrients (mineral) Eutrophication
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| Resumo: |
During the cruise EURHOGLI (Eutrophication by the Rhone of the Gulf of Lion) of the R.V. Le Noroit , a grid of stations covering the dilution area of the Rhone River has been carried out two times with a time interval of about two weeks. An exceptional growth during the two months preceding the cruise, has produced an important dilution effect over a wide spread areas. The absence of nutrients demonstrates their general consumption by biological activity. The tracer properties of the nutrient can be observed only in a small area near the mouth of the river. Nutrients are becoming the tracer of this dilution, and a great development of chlorophyll associated to this same area, show that nearly all the biological activity of nutrient assimilation is concentrated in the narrow surface layer. Such a situation proves the absence of downward mixing effect due to the wind. Determinations of nutrients in the waters show a strong increase of the concentration during the last 20 years; this increase has an anthropogenic origin.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/1984/acte-1515.pdf
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| Editor: |
Actes de colloques. Ifremer. Brest [ACTES COLLOQ. IFREMER.]. 1984
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| Relação: |
http://archimer.ifremer.fr/doc/00000/1515/
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| Formato: |
application/pdf
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