Spatiotemporal variability of fish assemblage in the Shatt Al-Arab River,Iraq
Spatiotemporal variability of ifsh assemblage in the Shatt Al-Arab River, Iraq作者机构：Department of Fisheries and Marine ResourcesCollege of AgricultureUniversity of BasrahIraq Institute of TeachersDirectorate of Basrah EducationIraq
出 版 物：《Journal of Coastal Life Medicine》 (海岸生命医学杂志（英文版）)
年 卷 期：2015年第1期
页 面：27-34页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：Fish assemblage Fish guilds Ecological factors Shatt Al-Arab estuary Iraq
摘 要：Objective:To study spatial and temporal variability of fish assemblage in the Shatt Al-Arab ***:This study was conducted from December 2011 to November *** temperature,salinity,dissolved oxygen and transparency were measured from three sites in the *** fishing methods were adopted to collect fish including gill nets,cast net,electro-fishing and hook and *** between the distribution of fish species and the environmental variables were quantified by using canonical correspondence ***:The results showed that the fish assemblage consisted of 58 species representing 46 genera and 27 families belong to Osteichthyes except one(Carcharhinus leucas)relate to *** of species increased in summer and autumn months and sharply decreased in *** ilisha was the most abundant species comprising 27.4%of the catch,followed by Carassius auratus(23.7%)and Liza klunzingeri(10.6%).The dominance(D_(3))value for the main three abundant species was 61.7%.Nine species were caught for the first times from the river include eight *** overall values of diversity index ranged from 0.67 in March to 2.57 in October,richness index from 2.64 in January to 3.71 in September and evenness index from 0.22 in March to 0.73 in ***:Spatially,the fish assemblages of Shatt Al-Arab River can be divided into three ecological fish guilds,namely,common species,seasonal species and occasional species.
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