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Distribution of Meio- and Macrofaunal Assemblages in Anthropogenically Impacted Coastal Sediments (NW Mediterranean)

  • A. Covazzi Harriague
  • M. Chiantore
  • E. Piccione
  • L. Maliardi
  • G. Albertelli

Abstract

Meio- and macrofaunal assemblages in front of Genova and Savona were studied in order to evaluate their structure in anthropogenically impacted coastal sediments. In the study area, sediment particle size clearly decreases with depth, while their organic matter content shows a clearly increasing pattern. Hydrocarbons show top values at 20 m depth in front of Genova and at 50 m depth in front of Savona. In the whole considered area mollusc and echinoderm assemblages evidence higher densities and species number at 20 m depth. Herein a transition zone is observed where species characteristic of organic enrichment and sediment instability, such as the bivalves Corbula gibba and Thyasira flexuosa, reach top densities. Suspension-feeders dominate at 10 m, at 50 m deposit-feeders turn out dominant, while at 20 m these alternative feeding strategies coexist. Meiofauna abundance and number of taxa reached top values at 10 m depth in front of Genova as well as in front of Savona.

Keywords

Rose Bengal Total Organic Matter Organic Enrichment Nematode Abundance Meiofauna Abundance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Italia 2001

Authors and Affiliations

  • A. Covazzi Harriague
    • 1
  • M. Chiantore
    • 1
  • E. Piccione
    • 1
  • L. Maliardi
    • 1
  • G. Albertelli
    • 1
  1. 1.Dipartimento per lo Studio del Territorio e delle Sue RisorseUniversità di GenovaGenovaItaly

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