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Structure et bioévaluation de l'état écologique des communautés benthiques d'un écosystème lagunaire de la côte atlantique marocaine
- Source :
- Comptes Rendus Biologies. 328:977-990
- Publication Year :
- 2005
- Publisher :
- Elsevier BV, 2005.
-
Abstract
- The Merja Zerga lagoon is a semi-enclosed marine ecosystem in which various types of human activities have been developed. This paper characterizes the biosedimentary units of the lagoon and defines a reference status of the quality and health of the macrozoobenthic communities that can be used as bioindicators of the quality of the global marine environment. Specific and functional diversity were high: 147 taxa were identified; they were distributed within seven main trophic groups. Trophic structure is dominated by the suspension-feeding bivalve Cerastoderma edule and the deposit-feeding bivalve Scrobicularia plana, while micrograzers and macroherbivores remain low. Biotic index values indicated that the site is moderately perturbed and that the benthic communities are unbalanced. Nevertheless, the communities showed a seasonal stability of abundances and a high specific richness all through the year.
- Subjects :
- Cerastoderma edule
General Immunology and Microbiology
biology
Ecology
Species diversity
General Medicine
biology.organism_classification
General Biochemistry, Genetics and Molecular Biology
Geography
Benthic zone
Marine ecosystem
General Agricultural and Biological Sciences
Scrobicularia plana
Bioindicator
Biotic index
Trophic level
Subjects
Details
- ISSN :
- 16310691
- Volume :
- 328
- Database :
- OpenAIRE
- Journal :
- Comptes Rendus Biologies
- Accession number :
- edsair.doi...........fca03701b05d6fa90a6e061897217309