期刊名称:Journal of Materials and Environmental Science
印刷版ISSN:2028-2508
出版年度:2017
卷号:8
期号:3
页码:857-862
出版社:University of Mohammed Premier Oujda
摘要:Some events could affect the biological diversity and living resources in marine areas.Under the influence of human activities, the Atlantic ocean ecosystem has changed.Taking this into consideration, a new approach of studies is absolutely necessary in orderto estimate the major modifications that occurred on macrophytobenthos, under theinfluence of harmful factors that disturb the quality of marine environment and itsbiodiversity. The aim of this study is to determine the macroalgal biodiversity of theEssaouira coast in relation to the main abiotic factors. Two stations were chosen: MoulayBouzektoune station (S1) located at 15 km far from Essaouira as a control, and the BabDokkala station (S2) located in the city where some industrial and domestic wastewatersare rejected without any treatment. The results show a high diversity ofmacrophytobenthos at S1 station with 79 taxa of macroalgae including 56 Rhodophyceae,14 Chlorohyceae and 9 Phaephyceae, whereas at S2 station, only 44 species wereinventoried including 31 Rhodophycae, 8 Chlorophycae and 5 PhaeophycaeSome physico-chemical parameters were measured to assess the pollution impact degreeon the two stations studied. The results show that in Bab Dokkala station, where it pourssewage from the city of Essaouira without pretreatment, there is an increase of nitrite,ammonium, total phosphorus and orthophosphates, with a slight decrease of pH.Thus, the algal biodiversity and abiotic parameters show that Bab Doukkala station isimpacted by domestic wastewater coming from the city of Essaouira in comparison withthe preserved one: Moulay Bouzerktoune.