Assessment of Benthic Macro-invertebrate Communities in Relation to Water Quality in Teltele Stream, Ambo West Showa, Ethiopia

Greener Journal of Environmental Management and Public Safety Pub Date : 2018-08-01 DOI:10.15580/gjemps.2018.3.070318092

G. Tessema, Agumassie Tesfahun

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引用次数: 1

Abstract

DOI: 10.15580/GJEMPS.2018.3.070318092 The assessment of benthic macro-invertebrates were studied in Teltele stream based on total of 6 orders and 11 families collected through December-May, 2015. Microsoft Excel and PAST software were employed to investigate the abundance and diversity of macro-invertebrates. Ephemeroptera was dominated 137(40.53%) followed by Coleoptera 112(33.14%) in the Teletele stream. However, other groups had less distribution. Based on the study sites, Ephemeroptera, Coleoptera and Diptera were the most widely distributed organisms accounted for 69(60%) at site 1, 28(17.1%) at site 2 and 40(67.8%) at site 3 for Ephemeroptera. Coleoptera comprised 22(19.1%) at site 1 and 90(54.87%) at site 2 and Diptera consisted 34(20.7%) at site 2 and 15(25.4%) at site 3. The distributions and compositions of the benthic macro-invertebrates were unequal at the sampling sites and statistically not significant (one way ANOVA, P>0.05). The Shannon diversity indexes were different among the sampling sites and the distribution of benthic organisms strongly associated with water quality parameters. The overall Shannon diversity index was (1.37) it revealed that the abundance and diversity of macro-invertebrate communities were low and therefore showed that poor water quality. At the study sites, several human induced associated impact problems like the existence of exotic Eucalyptus trees, Agricultural lands, waste material disposal and Ambo University’s oxidation pond were identified that resulted less distribution of macro-invertebrates in Teltele stream. The stream is vital for socioeconomic purposes such as drinking (cattle watering), sanitation, recreation, irrigation and others of the communities around the catchment and therefore, watershed management throughout the catchment is vital for proper utilization of the Teltele stream. Submitted: 03/07/2018 Accepted: 24/07/2018 Published: 01/08/2018

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埃塞俄比亚Ambo West Showa Teltele溪流中底栖大型无脊椎动物群落与水质关系的评估

基于2015年12月至5月收集的6目11科，对Teltele溪流中底栖大型无脊椎动物的评估进行了研究。采用Microsoft Excel和PAST软件对大型无脊椎动物的丰度和多样性进行了调查。远翅目以蜉蝣目137目(40.53%)居多，鞘翅目112目(33.14%)次之。然而，其他组的分布较少。从各研究点来看，蜉蝣目、鞘翅目和双翅目生物分布最广，分别在1点、2点和3点分布69种(60%)、28种(17.1%)和40种(67.8%)。1号点鞘翅目22只(19.1%)，2号点90只(54.87%);2号点双翅目34只(20.7%)，3号点15只(25.4%)。各采样点底栖大型无脊椎动物的分布和组成不均匀，差异无统计学意义(单因素方差分析，P < 0.05)。不同采样点的Shannon多样性指数不同，底栖生物的分布与水质参数密切相关。总体Shannon多样性指数为(1.37)，表明大型无脊椎动物群落的丰度和多样性较低，水质较差。在研究地点，发现了一些人为引起的相关影响问题，如外来桉树的存在、农业用地、废物处理和Ambo大学的氧化池，导致大型无脊椎动物在Teltele溪流中的分布减少。这条河流对于流域周围社区的饮用(牲畜饮水)、卫生、娱乐、灌溉等社会经济目的至关重要，因此，整个流域的流域管理对于Teltele河流的适当利用至关重要。提交时间:03/07/2018接收时间:24/07/2018发布时间:01/08/2018

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Greener Journal of Environmental Management and Public Safety

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