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La distribution des crustacés décapodes invasifs Hemigrapsus sanguineus (De Haan, 1835) et Hemigrapsus takanoi Asakura & Watanabe, 2005 en Côte d’Opale en 2008
Tous Rius, A. (2008). La distribution des crustacés décapodes invasifs Hemigrapsus sanguineus (De Haan, 1835) et Hemigrapsus takanoi Asakura & Watanabe, 2005 en Côte d’Opale en 2008. MA Thesis. Université de Lille 1: Lille. 85 pp.
Thesis info:
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Documenttype: Doctoraat/Thesis/Eindwerk
Trefwoorden
    ANE, France, Nord
    Biodiversity
    Interspecific relationships > Competition
    Taxa > Species > Introduced species
    Carcinus maenas (Linnaeus, 1758) [WoRMS]; Hemigrapsus sanguineus (De Haan, 1835) [WoRMS]; Hemigrapsus takanoi Asakura & Watanabe, 2005 [WoRMS]
    Nord [Marine Regions]
    Marien/Kust
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  • Tous Rius, A.
Abstract
    Nowadays, invasions of species in coastal areas have become an ineluctable and irreversible phenomenon. The introduction of two Asians crustaceans’ decapods Hemigrapsus sanguineus and Hemigrapsus takanoi in French’s coasts reveals the problem of negatives and positives effects which can have invasives’s species on the biodiversity and the mechanism of coastal and littoral’s ecosystems. The study of these two species’ distribution in the Côte d’Opale shows that they were much implanted in the region and they colonized all the coastal and harbors areas. They’re occupying the same habitat as the green crab Carcinus maenas: species of European coasts which will be threaten by these two species if the density of these two introducer’s species became important, (in the same order of length in American north east’s coasts H. sanguineu which have colonize 750 km of New Jersey’s coasts until Maine). A following of this invasion should be contemplated for the understanding of interspecifics’s competitions for the feeding or for the habitat notably in harbors’ biocenoses characterized by a low biodiversity.
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