International Journal of Fauna and Biological Studies
2014, Vol. 1 Issue 6, Part C
Semi-quantitative analysis of freshwater molluscs in the permanent Annasser lakes, Ouergha watershed (Morocco)
Abdelaziz Maqboul, Rabia Aoujdad, Mohamed Fadli and Mohamed Fekhaoui
The main goal of this investigation was to study the systematic, description and distribution of freshwater molluscs in the Annasser lakes located in the Ouergha watershed (Morocco). The semi-quantitative surveys carried out between September 2002 and December 2005 has focused on four selected stations in the permanent pond. The choice of these stations was based on the molluscan data available, physical structure of the pond, structure associated vegetation, species diversity in each station and the maximum coverage area of the pond. Nine species of freshwater molluscs were collected in the malacological survey. The specific diversity of aquatic snails are positively correlated with the heterogeneity and complexity of natural vegetation and type of substrate of the temporary pond. The physical structure of the permanent pond is recognized to have an important influence on the density and composition of species communities. Indeed, the species richness in those biotop increases with the heterogeneity of habitat, serving for protection against predators as well as the diversification of ecological niches that allow sharing of resources.
Location of the sampling stations in Ouergha watershed
Pages: 108-113 | 1030 Views 22 Downloads
Abdelaziz Maqboul, Rabia Aoujdad, Mohamed Fadli and Mohamed Fekhaoui. Semi-quantitative analysis of freshwater molluscs in the permanent Annasser lakes, Ouergha watershed (Morocco). Int. J. Fauna Biol. Stud. 2014;1(6):108-113.