The use of the marine biotic index AMBI in the assessment of the ecological status of the Óbidos lagoon (Portugal)

Susana Carvalho, Miguel B. Gaspar*, Ana Moura, Carlos Vale, Paulo Antunes, Odete Gil, Luís Cancela da Fonseca, Manuela Falcão

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

78 Scopus citations

Abstract

This study reports the longitudinal distribution of sediment properties, including inorganic and organic contaminants, and the structure of the benthic community in Óbidos lagoon, a coastal system permanently connected to the sea and with negligible freshwater sources. Sediments from the upper to central lagoon consist of fine particles (91%) and from the lower lagoon of sands (94%). Chemical composition is strongly correlated to the percentage of fine particles. Contamination is relatively low in those sediments suggesting the effect of diffuse sources. The increase in organic matter content from down- to upstream areas was associated with the dominance of opportunistic species, while sensitive and indifferent species to organic enrichment were mainly associated to the clean sandy downstream area. The marine biotic index (AMBI) was suitable for the discrimination of the biological and environmental gradients in the Óbidos lagoon and was highly related with the gradient of organic matter content in this system.

Original languageEnglish (US)
Pages (from-to)1414-1424
Number of pages11
JournalMarine Pollution Bulletin
Volume52
Issue number11
DOIs
StatePublished - Jan 1 2006

Keywords

  • AMBI
  • Coastal lagoons
  • Contaminants
  • Macrobenthic communities
  • NE Atlantic
  • Sediment

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science
  • Pollution

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