Does the Port 2000 harbour construction have an effect on the Seine estuary suprabenthic community?
Identifieur interne : 000A49 ( Main/Curation ); précédent : 000A48; suivant : 000A50Does the Port 2000 harbour construction have an effect on the Seine estuary suprabenthic community?
Auteurs : Jean-Claude Dauvin [France] ; Sandrine Alizier [France] ; Carole Valle [France] ; Thierry Ruellet [France]Source :
- Estuarine, coastal and shelf science : (Print) [ 0272-7714 ] ; 2010.
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- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Using a Before/During/After protocol, the effects of Port 2000 (the Le Havre harbour extension) on the suprabenthic communities in the Northern Channel of the Seine estuary (English Channel) were examined from March 2001 to March 2009. Since the beginning of Port 2000 construction in 2002, there have been several changes in the hydrological and sedimentary characteristics in the North Channel, including changes in current velocity, bottoms salinity and sand accumulation, as well as in the benthic communities themselves, moving from mud to medium and coarse sand communities. For the suprabenthos, changes were moderate, corresponding to an increase in species richness in the upper-part of the North Channel and a decrease in species density in the dominant mysids species (i.e., mainly Mesopodospsis slabberi) over time. Due to hydrological changes since the beginning of the Port 2000 project (several years of low freshwater input) it has been difficult to attribute the biological changes to Port 2000 construction only. In the future, the results obtained for the suprabenthos will have to be compared to those obtained for the macrobenthos. Similarly, since the suprabenthos is known to play an important role in the estuarine trophic chain, it will also be essential to estimate the fish distribution in the North Channel and to examine their stomach contents to evaluate the probable changes since the Port 2000 project began.
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Pascal:10-0065563Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Anthropogenic factor</term>
<term>Benthic zone</term>
<term>Brackish water environment</term>
<term>Community</term>
<term>Construction</term>
<term>Dynamics</term>
<term>Environment impact</term>
<term>Harbor zone</term>
<term>Mysidacea</term>
<term>Salinity</term>
<term>Seine Estuary</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Zone portuaire</term>
<term>Construction</term>
<term>Zone benthique</term>
<term>Communauté</term>
<term>Dynamique</term>
<term>Salinité</term>
<term>Facteur anthropique</term>
<term>Impact environnement</term>
<term>Milieu saumâtre</term>
<term>Mysidacea</term>
<term>Estuaire Seine</term>
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<front><div type="abstract" xml:lang="en">Using a Before/During/After protocol, the effects of Port 2000 (the Le Havre harbour extension) on the suprabenthic communities in the Northern Channel of the Seine estuary (English Channel) were examined from March 2001 to March 2009. Since the beginning of Port 2000 construction in 2002, there have been several changes in the hydrological and sedimentary characteristics in the North Channel, including changes in current velocity, bottoms salinity and sand accumulation, as well as in the benthic communities themselves, moving from mud to medium and coarse sand communities. For the suprabenthos, changes were moderate, corresponding to an increase in species richness in the upper-part of the North Channel and a decrease in species density in the dominant mysids species (i.e., mainly Mesopodospsis slabberi) over time. Due to hydrological changes since the beginning of the Port 2000 project (several years of low freshwater input) it has been difficult to attribute the biological changes to Port 2000 construction only. In the future, the results obtained for the suprabenthos will have to be compared to those obtained for the macrobenthos. Similarly, since the suprabenthos is known to play an important role in the estuarine trophic chain, it will also be essential to estimate the fish distribution in the North Channel and to examine their stomach contents to evaluate the probable changes since the Port 2000 project began.</div>
</front>
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