1. Sciences pures
  2. Sciences de la vie

EAN13
9782844330765
Éditeur
Quae
Date de publication
1 décembre 2004
Collection
Programme scientifique Seine-Aval
Série
Programme scientifique Seine-Aval.
Nombre de pages
48
Dimensions
29,6 x 21 x 0,5 cm
Poids
207 g
Langue
fre

Programme Scientifique Seine-Aval., 7, 7.Biological Heritage And Food Chains

Jean-Claude Dauvin

Quae

Prix public : 7,00 €

In the Seine estuary, intertidal mudflats have been greatly reduced (< 30 km2) following channel management of the Seine river from Poses, in the upper part, to the sea. There are great differences between the biological compartments, ranging from areas with very high abundance of organisms (benthos on the muddy intertidal zone and, zooplankton in the lower part of the estuary) to areas with very low abundance (macrobenthos in the Seine river). There is also a contrast between the high abundance at the first levels of the trophic chain in a contaminated environment and the low abundance of fish. In the future, global management of the estuary will be required to ensure the biological compartments current level of functioning and to propose measures for rehabilitation of migrating fish.
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