Utilization of fresh water snails as ecological indicators
2010
Kassem, I.
This study was conducted during 2005 at ten hydro stations in Damascus, with the aim of identifying the species of water snails and the reaction between the snail distribution and ecological factors. Six species of Gastropoda, three of which belonging to Prosobranchia and the remainders belonging to Pulmonata were identified. The concentrations of O²,CO², NO3-, NH4+ and S04- were also determined. The Principal Compound Analysis (P.C.A) was imposed upon the results which revealed some association between the presence of certain species and the ecological factors. The abundance of Physa acuta species was indicative of organic pollutants while some others, namely Melanopsis praemorsa, Theodoxus Jordani, Bithynia phialensis were signs of pollutant free water stations.
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Эту запись предоставил Ain Shams University
