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Infaunal benthic recolonization after dredging operations in La Coruna Bay, NW Spain
López-Jamar, E.; Mejuto, J. (1988). Infaunal benthic recolonization after dredging operations in La Coruna Bay, NW Spain. Cah. Biol. Mar. 29(1): 37-49
In: Cahiers de Biologie Marine. Station Biologique de Roscoff: Paris. ISSN 0007-9723, more
Peer reviewed article  

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Keyword
    Brackish water

Authors  Top 
  • López-Jamar, E.
  • Mejuto, J.

Abstract
    In the harbour area of La Coruna Bay (NW Spain) there is a muddy sediment infaunal community dominated by the bivalve Thyasira flexuosa and the polychaete Chaetozone, sp., whose densities are very high (15,000-20,000 individuals. m super(-2)). Dredging operations carried out near a recently built dock determined that in this area the original community was reduced to a few species having short life cycles and to newly settled specimens. After the completion of the dredging operations, temporal variation of the affected area was followed during one year, and it is compared with a nearby area unaffected by dredging. The recovery of the dredged zone is practically attained 6 months after the completion of dredging operations, although biomass takes longer to reach values similar to those of the unaffected area.

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