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Taxonomic Diversity and Benthic Community structure of Watersheds of Medjerda and Joumine (North East of Tunisia)

Author Affiliations

  • 1 Laboratory of Environment Biomonitoring (Group of Hydrobiology), Faculty of Sciences of Bizerta University of Carthage, 7021, Jarzouna. TUNISIA

Int. Res. J. Earth Sci., Volume 3, Issue (1), Pages 24-30, January,25 (2015)

Abstract

This paper presents the analysis of the relationships between benthic communities from two watersheds of north-east Tunisia (Medjerda and Joumine) and habitat characteristics of the sampling sites. Biological material was collected from 6 sampling sites. The results show the presence of at least 80 taxa. Mercuria confusa Frauenfeld, 1863 has the highest relative abundance and frequency, followed by Ostracoda Latreille, 1802 and Echinogammarus pungens H. Milne Edwards, 1840. A statistical method based on classical description parameters (richness, diversity…) showed that the communities are relatively diversified in stations 1 and 4, whereas they are very poor in the other stations. The MDS and PCA analysis allowed identifying spatial features through the succession of benthic stands and its ecological preferences.

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