文章基本信息

标题：Distribution and Density of Zebra Mussels (Dreissena Polymorpha Pallas, 1771) and Related Some Environmental Properties in Euphrates River, Iraq
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作者：Jasim M. Salman ; Ahmad J. Nasar
期刊名称：Journal of Environment and Earth Science
印刷版ISSN：2225-0948
电子版ISSN：2225-0948
出版年度：2014
卷号：4
期号：11
页码：32-39
语种：English
出版社：The International Institute for Science, Technology and Education (IISTE)
摘要：The present study was carried on the Euphrates river /middle of Iraq, from October 2011 to September 2012 between Al-Musayyib city and Twereej City. Sampling were monthly from three sites in study area for studying some physical and chemical properties to river water ( air &water temperature , p H , EC , TDS ,TSS , Dissolved oxygen , transparency ,Total alkalinity , Total hardness, calcium , magnesium ) , also measured the concentration of chlorophell -a as indicator of biomass and primary productivity in Euphrates river. This study include collected the samples of zebra mussel from study sites to calculated the density and distribution of the species.The results showed the impact of spatial and temporal variation of environmental properties under study on the distribution and density of D.polymorpha .The species was recorded during most of time and sites of study and this species being invasive species was recorded for the first time in this region. Fluctuation was observed in the total density of D.polymorpha and the highest values were recorded in the sites (3) ( 23.7 individual /m2) during March 2012 and absente during October 2011 and September 2012 . Statistical analysis was done using the canonical correspondence analysis (CCA).
关键词：Zebra mussel; Biodiversity; Invasive species; Euphrates River; Iraq.