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Avifauna diversity and anthropogenic threats of wetlands in South-Western Ethiopia
African Journal of Ecology ( IF 1.1 ) Pub Date : 2020-12-07 , DOI: 10.1111/aje.12826
Azmeraw Alemkere Bezabih 1 , Fayera Bakala Gabayo 2 , Tesfaye Tolossa Wakjira 2
Affiliation  

This study was conducted to investigate avifauna diversity and anthropogenic threats to wetlands in Sheka and Bench-Maji Zones. A total of 5 wetlands, 4 swamps and 1 artificial lake, were purposely selected. Avian diversity data were collected using point count method. Household surveys were undertaken to collect data on anthropogenic threats of wetlands. A total of 1,130 individuals of birds belonging to 28 families and 61 species were recorded. Species richness and diversity were higher in the wet season (51 species, H = 3.65) than the dry season (40 species, H = 3.37). The Bray–Curtis Dissimilarity Index (BC) revealed the three study sites were 78.77% dissimilar in species composition (BCijk = 0.7877) with a total number of 18 shared species. Chega-Gawussi wetlands and Chonkie-Shinke wetlands have 70.89% similarity with BC Dissimilarity Index value of 0.291. The study identified that drainage for farming practices, grass overexploitation and Eucalyptus plantations were the main threats to Chonke-Shinkie wetlands, and Lake Dembi has been threatened by sedimentation from the adjacent farmlands, waste disposal from the Mizan-Aman Municipality, coffee washing plantations, whereas Chega-Gawussi wetlands were affected by grass overexploitation and deforestation. Therefore, due attention and conservation actions are required from stakeholders for the protection of these ecosystems.

中文翻译:

埃塞俄比亚西南部的动物群落多样性和湿地的人为威胁

进行这项研究的目的是调查舍卡地区和Bench-Maji地区的动物群落多样性和对湿地的人为威胁。总共选择了5个湿地,4个沼泽和1个人工湖。使用点计数方法收集禽类多样性数据。进行了家庭调查以收集有关湿地的人为威胁的数据。总共记录了1,130只鸟类,它们属于28个科目和61种。雨季的物种丰富度和多样性较高(51种,H = 3.65),旱季的物种丰富度和多样性较高(40种,H = 3.37)。Bray-Curtis相异指数(BC)显示,三个研究地点的物种组成相异78.87%(BC ijk = 0.7877),共有18种共有物种。Chega-Gawussi湿地和Chonkie-Shinke湿地具有70.89%的相似度,BC差异指数值为0.291。该研究表明,耕作方式的排水,草丛的过度开采和桉树人工林是Chonke-Shinkie湿地的主要威胁,而邻近农田的沉积,密赞阿曼市的废物处理,咖啡洗人工园,而Chega-Gawussi湿地则受到草场过度开采和森林砍伐的影响。因此,利益相关者需要采取适当的关注和保护行动,以保护这些生态系统。
更新日期:2020-12-07
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