Assessments of physico-chemical parameters of Garaet Hadj Tahar wetland and their effect on waterbirds settlement

摘要: This topic presented the relationship between physicochemical parameters and waterbirds assembling at Garaet Hadj Tahar (occidental Numidia, northeast of Algeria). Our data were collected from January 2018 to December 2018. Five physical four nutrient parameters, measured this wetland. We have noted 35 species belonging eleven family. All wetland listed as least concern according IUCN red list, except three Anatidae key with a conservation statuts: Aythya nyroca (near threatned), Oxyura leucocephala (endangered species) Marmaronetta angustirostris  (vulnerable). The maximum values abundance, richness, Shannon diversity index Simpson in wintering period but not for Pielou�??s evenness index. Only five influenced population must getting more interest surveys order maintain biodiversity hotspot wetland.    Keywords: Wetland; Physicochemical; Numidia; Waterbirds; Tahar  References Alonso, J.C., Alonso, J.A., & Carrascal, L.M. (1991). 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