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Spatial distribution and structure of benthic polychaete communities of Essaouira intertidal rocky shores(Atlantic coast of Morocco)

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Journal of Oceanology and Limnology 2020年第1期38卷 143-155页

作者： CHOUIKH Nor-eddine GILLET Patrick LANGSTON WJ CHEGGOUR Mohamed maarouf abdelmalek MOUABAD Abdelfattah Laboratory“Aliments Environnement et santé”Faculty of Sciences and TechnicsB.P.549Cadi Ayyad UniversityMarrakech 40000Morocco Mer Molécules Santé Department of Biology EnvironmentFaculty of Sciences UCOAngers 49008France Marine Biological Association the LaboratoryCitadel HillPlymouth PL12PBUnited Kingdom Department of Biology Ecole Normale SupérieureB.P.2400Cadi Ayyad UniversityMarrakech 40000Morocco

Polychaetes are one of the most important groups ofmacrobenthic organisms in coastal and marine environments,in terms of diversity and abundance,and play an important role in the functioning of *** study aims to describe the structure and spatial distribution ofpolychaete communities along Essaouira's rocky shoreline(Atlantic coast of Morocco)in relation to the major environmental variables such as granulometry,salinity,temperature,pH,and intertidal *** sites from these intertidal rocky shores were sampled using a quadrat method during the summer 2016.A total of 4435 individuals belonging to 34 taxa were *** the families,Sabellaridae(24%)and Nereididae(23%)were ranked first in terms of abundance of *** alveolata(24%)and Perinereis cultrifera(13%)were the dominant ***(H')values varied from 2.28 to ***'s index(J')varied between 0.62 and *** was essentially due to the low dominance of few *** analysis was used to characterise Essaouira's rocky shores on the basis of benthic polychaete *** analysis confirmed the presence of three distinct *** to canonical correspondence analysis,the structure and distribution of faunal assemblages of benthic polychaetes was mainly related to topographical complexity,water temperature,hydrodynamic conditions and *** conclude that these rocky shores show typically high benthic polychaete diversity compared to the taxonomic list of other rocky *** addition,these results constitute a baseline data for the development of a sustainable network for long-term monitoring of benthic polychaete community changes due to ecological factor influences and anthropogenic activity impacts.

关键词： polychaetes taxonomic diversity Essaouira rocky shore faunal assemblage

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