埃塞俄比亚Gilgel Abay河下游流域湿地大型无脊椎动物群落结构和多样性与环境因素的关系

IF 1.1 4区 环境科学与生态学 Q3 MARINE & FRESHWATER BIOLOGY
H. Getnet, S. Mengistou, B. Warkineh
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引用次数: 1

摘要

在埃塞俄比亚Gilgel Abay河(GAR)流域的湿地中,研究了环境因素对大型无脊椎动物多样性的影响。这项研究于2017年9月至2018年3月进行,包括雨季和旱季。根据周围的土地利用、人为干扰的暴露程度和可及性,有针对性地选择了GAR流域的六个研究湿地,以进行定量研究。生物和环境变量之间的关系通过多变量分析进行评估。共鉴定出36个大型无脊椎动物科。与受损程度较高的地点相比,受损程度较低的地点的大型无脊椎动物多样性指数显著较高。麻黄素翅目、Ododata目和毛翅目的几个科,包括Cordulidae、Calopterigidae、Baetidae、Aeshnidae、Polymitarcyidae、Hydrophroidae、Heptagenidae、Polycentrididae、Hydroptilidae和Philopotamidae,都与有机和无机污染物以及人类干扰呈负相关,可能被认为是受损程度较低的地点的潜在指标。相反,摇蚊科、水蛭科和Libellulidae科与生物需氧量、铵和人类干扰评分呈正相关,与溶解氧呈负相关。总体而言,本研究中的大型无脊椎动物多样性和组成结果表明,湿地的生态条件较差,尤其是与农业和城市地区相邻的湿地。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Macroinvertebrate community structure and diversity in relation to environmental factors in wetlands of the lower Gilgel Abay River catchment, Ethiopia
The influence of environmental factors on the diversity of macroinvertebrates was studied in the wetlands of the Gilgel Abay River (GAR) catchment in Ethiopia. The study was done between September 2017 and March 2018, encompassing both wet and dry seasons. Six study wetlands from the GAR catchment were selected in a targeted manner based on the surrounding land use, exposure to anthropogenic disturbances and accessibility to conduct a quantitative study. The relationships between biological and environmental variables were evaluated by using multivariate analyses. Altogether, 36 families of macroinvertebrates were identified. Macroinvertebrate diversity indices were significantly higher at less impaired sites, compared with more impaired sites. Several families of Ephemeroptera, Odonata and Trichoptera taxa, including Corduliidae, Calopterygidae, Baetidae, Aeshnidae, Polymitarcyidae, Hydropsychidae, Heptageniidae, Polycentrapodidae, Hydroptilidae and Philopotamidae were negatively correlated with organic and inorganic pollutants and human disturbances and might be considered as potential indicators of less impaired sites. Conversely, the families Chironomidae, Hirudinidae and Libellulidae were positively correlated with biological oxygen demand, ammonium and human disturbance score and negatively correlated with dissolved oxygen. Generally, results of macroinvertebrate diversity and composition in this study indicate poor ecological condition of the wetlands, particularly those adjacent to agricultural and urban areas.
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来源期刊
African Journal of Aquatic Science
African Journal of Aquatic Science MARINE & FRESHWATER BIOLOGY-
CiteScore
3.90
自引率
7.10%
发文量
31
审稿时长
>12 weeks
期刊介绍: The African Journal of Aquatic Science is an international journal devoted to the study of the aquatic sciences, covering all African inland and estuarine waters. The Journal publishes peer-reviewed original scientific papers and short articles in all the aquatic science fields including limnology, hydrobiology, ecology, conservation, biomonitoring, management, water quality, ecotoxicology, biological interactions, physical properties and human impacts on African aquatic systems.
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