Index of size distribution (ISD): a method of quality assessment for coastal lagoons

  • Sofia Reizopoulou
  • Artemis Nicolaidou
Part of the Developments in Hydrobiology book series (DIHY, volume 192)

Abstract

A new index was developed as a tool for quantifying the degree of disturbance in lagoons in order to meet the objective of Ecological Quality Status (EcoQ), using the zoobenthos quality element. The Index of Size distribution (ISD) is proposed to assess the ecological quality status of coastal lagoons. It represents the skewness of the distribution of individuals of a benthic community in geometric size (biomass) classes. The ISD was applied in three coastal lagoons with different levels of disturbance and classified them as of good, moderate and poor ecological quality. A scheme for the classification of EcoQ in lagoonal systems is presented. The index showed a strong relationship with the percentage of organic carbon in the sediment, as well as with the dissolved oxygen concentrations. ISD having the advantage of good discriminating power and not demanding high taxonomic resolution, could be a simple and promising tool to be further applied and tested in Mediterranean lagoons.

Keywords

Lagoons Benthos Pollution assessment Indices Ecological quality status 

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Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • Sofia Reizopoulou
    • 1
  • Artemis Nicolaidou
    • 2
  1. 1.Institute of OceanographyHellenic Centre for Marine ResearchAnavissos, AttikiGreece
  2. 2.Department of Zoology - Marine Biology, School of BiologyUniversity of AthensPanepistimiopoli, AthensGreece

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