Abstract

Summary
Amphibians are today a privileged group in global biodiversity conservation efforts. Several species are threatened with extinction due to the loss and deterioration of their habitats. Knowledge of the geographic distribution of amphibians in Algeria was until recently relatively incomplete. In order to better understand the distribution of amphibians in North-Eastern Algeria, we sampled 102 stations between 2014 and 2018 spread over the territory of the WilayaofSoukAhras, which allowed us to identify 7 species including six Anuras, (Hylameridionalis, Bufospinosus, Sclerophrysmauritanica, Bufotesboulengeri, Pelophylaxsaharicus and Discoglossuspictus) and aUrodele (Pleurodèlesnebulosus)species endemic Algero-Tunisian and vulnerable.
The PERMANOVA non-parametric multivariate analysis allowed to deduce that the assemblages of amphibians in the different stations of our study area differ significantly across the bioclimatic stages (F = 0.098, p <0.01) and the facies (F = 2.0293, p <0.01).
The Similarity Analysis (ANOSIM) of assemblages of amphibians among the possible combinations across the three bioclimatic stages has revealed that there is a similarity between the humid and the subhumid. Four species contributed to this dissimilarityDiscoglossuspictus, Sclerophrysmauritanica, Bufospinosus and Hylameridionalis. This same test highlighted three pairs of combinations that present a significant dissimilarity between the facies namely: permanent running water / vegetation, permanent standing water / vegetation and temporary stagnant water / vegetation. Only one species, Sclerophrysmauritanica, contributed to this difference.
The ACC indicates the role played by the physicochemical variables tested in the organization of the stand of amphibians in the Souk Ahras region. It seems that H. meridionalis and P. nebulosus are linked to the dissolved oxygen parameter, S. mauritanica and P. saharicusmark their presence in turbid waters with a certain conductivity threshold while D. pictus, B. spinosus and B. boulengerirub shoulders with brackish waters.
Keywords: Amphibiens, distribution, Souk Ahras, bioclimatique stage, facies, physicochemical variables

Information

Item Type:	Thesis
Divisions:	» Laboratory for Terrestrial and Aquatic Ecosystems » Faculty of Natural Sciences and Life
ePrint ID:	2280
Date Deposited:	2020-09-06
Further Information:	Google Scholar
URI:	https://www.univ-soukahras.dz/en/publication/article/2280

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