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Etude du peuplement à Ophelia borealis et de l'annelide Nephtys cirrosa (Ehlers 1868) en Manche orientale et en Mer du Nord occidentale
Prygiel, J. (1987). Etude du peuplement à Ophelia borealis et de l'annelide Nephtys cirrosa (Ehlers 1868) en Manche orientale et en Mer du Nord occidentale. PhD Thesis. Université des Sciences et Techniques de Lille. Station Marine de Wimereux: Wimereux. 128 pp.
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Document type: Dissertation
Keyword
    Marine/Coastal
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Abstract
    The prospecting studies of the French part of the North Sea and of the East English Channel show the existence of 5 bio sedimentary units. It is among those that we identify as fine to medium sand populations specific for Ophelia borealis. This population consists of islots separated by great depressions. In the North Sea it tends to form a vast complex that covers the region. The study of the four sandy banks, chosen in a way to obtain a double gradient North-South and broad dimension with a licence to define the principle characteristics of this population.
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