Statistical study of the benthic communities of sources Ain Regrag, Sidi Bouali and Tataw (Middle Atlas, Morocco)
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Statistical study of the benthic communities of sources Ain Regrag, Sidi Bouali and Tataw (Middle Atlas, Morocco)
Abstract
The present work presents the results obtained from the sampling of benthic macro fauna on three major sources of freshwater in the Middle Atlas Morocco. The samples were taken monthly from January 2013 to December 2013 with a Surber NET with a width of mesh 400µm. A total of 22189 individuals belonging to 47 species were collected in the three studies 12 months of sampling stations. The statistical analyses by the ACP have shown several positive correlations between certain species creating benthic associations, so another vision of the multispecies trophic. The statistical tool has given rise to the involvement of the factor ‘season’ in the distribution of macro benthic species in the Tataw station, which would be manifested by a decrease or increase in abundance between seasons while in the source AR the vast majority of species are indifferent to a seasonal effect. The study of correlations between species and the physicochemical parameters of the environment revealed that, according to the station, several positive and negative correlations between some physicochemical parameters of the middle (T°C, Ca2 +, IP, dissolved O2) and some taxa colonizing studied habitats as the may flies, Baetis rhodani, Ecdyonorus ifranensis, the phoretic, Agapitus incertilus, the Aipteran, Simulium ornatum and the Amphipod Gammarus rouxii. Statistical analysis by ANOVA highlights the behavior of the species towards the two factors ‘time’ and ‘space’, indeed this review showed that for the majority of species (31 taxa), the number is stable in time but changes from one source to the other.
AFNOR 1997. Qualité de l’eau. Recueil des Normes Françaises Environnement, Tomes 1, 2, 3 et 4,) p1372.
Anistratenko VV. 2005. Lectotypes for Tricoliap ullus, Gibbula divaricata and Theodoxus fluviatilis (Mollusca, Gastropoda). Vestnikzoologii 39(6), 3-10.
Dakki M. 1987. Ecosystèmes d’eau courante du Haut Sebou (Moyen Atlas): études typologiques et analyses écologiques et biogéographiques des principaux peuplements entomologiques. Trav. Inst. Sci., Rabat, sér. Zool 42, 99 p.
Fadil F. 1994. Etude de la toxicité des sédiments et des métaux lourds chez Gammarus gauthieri (Crustacés, Amphipodes). Optimisation des conditions d’élevage et du test de toxicité. Thèse de 3ème cycle, Univ. Moulay Ismail, Fac. Sci. Meknès 119 p.
Fadil F. 2002. Les Gamma ridés épigés des eaux continentales du Maroc (Crustacés, Amphipodes): systématique, écologie, Biologie et intérêt écotoxio-logique. Thèse d’Etat, Univ. Moulay Ismail, Fac. Sci. Meknès 148 p.
Fonseca CR, Ganade G. 2001. Species functional redundancy, random extinctions and the stability of ecosystems. Journal of Ecology 89, 118-125.
Ghamizi M. 1998. Les Mollusques des eaux continentales du Maroc: Systématique et Zool. baetica, 16, 21-29, 2005 anodontacygnea en Tunisie 29 Bioécologie. Thèse de Doctorat d’Etat Es-Sciences Biologiques. Fac. Sc. Semlalia, Marrakech, Maroc.
Glöer P, Pešić V. 2012. The freshwater snails (Gastropoda) of Iran, with descriptions of two new genera and eight new species. Zoo Keys 219: 11-61.
Gray J. 2007. Patterns, threats and conservation needs. Biodiversity and Conservation 6, 153-175.
Legendre P, Egendre VL. 1984. Postglacial dispersal of freshwater fishes in the Québec peninsula. Can. J. Fish. Aquat. Sci 41, 1781-1802.
Loreau M. 2001. Biodiversity and ecosystem functioning: current knowledge and future challenge. Science 294, 804-808.
McCann K. 2007. Protecting biostructure. Nature 446, 29.
Rodier J, Bazin C, Broutin JP, Chambon P, Champsaur H, Rodi L. 1996. L’analyse de l’eau 8 ème édition, Edition Dunod, Paris, France.
Tachet H, Richoux P, Bournaud M, Usseglio-Polatera P. 2006. Invertébrés d’eau douce: systématique, biologie, écologie. CNRS 2 eme Editions, Paris 588 pp.
Urban MC, Skelly DK. 2006. Evolving met communities: Toward an evolutionary perspective on met communities. Ecology 87(7), 1616- 1626.
Van Damme D, Ghamizi M. 2007. Theodoxus numidicus In: IUCN 2010. IUCN Red List of Threatened Species. Version 2010.4.
Imane Nechad, Mouhcine Fadil, Fatima Fadil, 2016. Statistical study of the benthic communities of sources Ain Regrag, Sidi Bouali and Tataw (Middle Atlas, Morocco). J. Biodiv. Environ. Sci., 9(2), 272-285.
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