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  • Amphipod  (1)
  • macrobenthos  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Chitin production by Ampelisca (Amphipoda) populations from a fine sand community in the Bay of Morlaix (English channel) (1995)
    Springer
    Hydrobiologia 310 (1995), S. 101-106 
    Details
    ISSN: 1573-5117
    Keywords: Chitin ; production ; Amphipod ; Ampelisca
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract We measured chitin biomass and production in five species of Ampelisca (Crustacea Amphipoda) living on a fine sand community at ‘Pierre Noire Station’ in the Bay of Morlaix (Western English Channel, Brittany, France). Taking into account the maxima of their mean total production, the annual chitin production was estimated at between 600 and 900 mg m−2 yr−1. These values are close to those of the chitin production of pioneering benthic communities growing on naked substrates in the coastal waters of Calvi bay (Mediterranean, Corsica) between 7 to 28 meter depth, and of the zooplankton of that same area.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00015528
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Variations à long-terme (1977–1985) du peuplement des sables fins de la Pierre Noire (baie de Morlaix, Manche occidentale): analyse statistique de l'évolution structurale (1986)
    Springer
    Hydrobiologia 142 (1986), S. 171-186 
    Details
    ISSN: 1573-5117
    Keywords: macrobenthos ; subtidal communities ; long-term evolution ; statistical analysis ; West English Channel
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Long term monitoring for eight years of the fine sand community from the bay of Morlaix has allowed the determination of the principal stages of its structural evolution. Principal component analysis on the general trends of 43 species has permitted the division of the chronological series into six successive periods. The rapid evolution of the community during the first four years after the Amoco Cadiz oil spill indicates a period of perturbation which is followed by a stabilisation of the macrobenthos. This evolution is a function of changes in direction in gradients within the populations. The resemblance metric and the dissimilarity correlograms were used after regrouping the species into six trophic groups. The Mantel test allowed measurement of the contrasts between equilibrium and restructuration periods. The extended variogram function showed different behaviour of trophic groups related to demographic strategies. The generalization of these methods in benthic studies should allow the comparison in space and time of the scale of the physical factors responsible for the observed phenomena.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00026757
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    Paper (German National Licenses)
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