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Assessment of the water quality and Odonata assemblages in three waterbodies in Ilara-Mokin, south-western Nigeria
International Journal of Odonatology ( IF 1.0 ) Pub Date : 2019-04-03 , DOI: 10.1080/13887890.2019.1593889
B.W. Adu 1 , B.O. Amusan 2 , T.O. Oke 1
Affiliation  

This study investigated the biological water quality and Odonata assemblages in three waterbodies in Ilara-Mokin, with the aim of determining the ecological integrity of the ecosystems. Sampling of Odonata specimens was carried out over April–August, 2017 between 9.00am and 4.00pm under favourable conditions. Some physico-chemical parameters of the water such as dissolved oxygen, electrical conductivity, temperature, flow rate, pH, and water depth were also investigated. A total of 41 odonate species were recorded in this study and this was represented by 29 dragonfly and 12 damselfly species. These species are contained in seven families (Macromiidae, Gomphidae, Libellulidae, Calopterygidae, Coenagrionidae, Chlorocyphidae and Platycnemididae). The seven families were recorded at Aponmu River while Omifunfun River and Isokun River accounted for six and four families respectively. However, the highest number of individuals was collected at Isokun River. Libellulidae was the dominant family. Diversity indices revealed that Aponmu river was the richest in terms of species richness, diversity and taxa distribution (Shannon: 3.18, Simpson D: 0.95, Margalef: 7.38, evenness: 7.38, equitability: 0.93). Dragonfly Biotic Index (DBI) analysis indicated that Omifunfun River represented the best habitat condition in the study area while Isokun River was considered the most perturbed sampled site in the study area. Conservative efforts should be intensified to protect Omifunfun River in order to preserve all extant aquatic biota and other available resources therein.

中文翻译:

尼日利亚西南部 Ilara-Mokin 三个水体的水质和 Odonata 组合评估

本研究调查了 Ilara-Mokin 三个水体中的生物水质和 Odonata 组合,目的是确定生态系统的生态完整性。2017 年 4 月至 8 月上午 9 点至下午 4 点在有利条件下对 Odonata 标本进行了采样。还研究了水的一些物理化学参数,例如溶解氧、电导率、温度、流速、pH 值和水深。本研究共记录了 41 种有齿昆虫,其中蜻蜓 29 种,豆娘 12 种。这些物种包含在七个科中(Macromiidae、Gomphidae、Libellulidae、Calopterygidae、Coenagrionidae、Chlorocyphidae 和 Platycnemididae)。7个科记录在Aponmu河,Omifunfun河和Isokun河分别占6个和4个科。然而,在 Isokun 河收集的个体数量最多。Libellulidae 是优势科。多样性指数显示,Aponmu 河在物种丰富度、多样性和分类群分布方面最为丰富(Shannon:3.18,Simpson D:0.95,Margalef:7.38,均匀度:7.38,公平性:0.93)。蜻蜓生物指数(DBI)分析表明,Omifunfun 河代表了研究区最好的栖息地条件,而 Isokun 河被认为是研究区中扰动最严重的采样点。应加强保护 Omifunfun 河的保守努力,以保护其中所有现存的水生生物群和其他可用资源。然而,在 Isokun 河收集的个体数量最多。Libellulidae 是优势科。多样性指数显示,Aponmu 河在物种丰富度、多样性和分类群分布方面最为丰富(Shannon:3.18,Simpson D:0.95,Margalef:7.38,均匀度:7.38,公平性:0.93)。蜻蜓生物指数(DBI)分析表明,Omifunfun 河代表了研究区最好的栖息地条件,而 Isokun 河被认为是研究区中扰动最严重的采样点。应加强保护 Omifunfun 河的保守努力,以保护其中所有现存的水生生物群和其他可用资源。然而,在 Isokun 河收集的个体数量最多。Libellulidae 是优势科。多样性指数显示,Aponmu 河在物种丰富度、多样性和分类群分布方面最为丰富(Shannon:3.18,Simpson D:0.95,Margalef:7.38,均匀度:7.38,公平性:0.93)。蜻蜓生物指数(DBI)分析表明,Omifunfun 河代表了研究区最好的栖息地条件,而 Isokun 河被认为是研究区中扰动最严重的采样点。应加强保护 Omifunfun 河的保守努力,以保护其中所有现存的水生生物群和其他可用资源。多样性指数显示,Aponmu 河在物种丰富度、多样性和分类群分布方面最为丰富(Shannon:3.18,Simpson D:0.95,Margalef:7.38,均匀度:7.38,公平性:0.93)。蜻蜓生物指数(DBI)分析表明,Omifunfun 河代表了研究区最好的栖息地条件,而 Isokun 河被认为是研究区中扰动最严重的采样点。应加强保护 Omifunfun 河的保守努力,以保护其中所有现存的水生生物群和其他可用资源。多样性指数显示,Aponmu 河在物种丰富度、多样性和分类群分布方面最为丰富(Shannon:3.18,Simpson D:0.95,Margalef:7.38,均匀度:7.38,公平性:0.93)。蜻蜓生物指数(DBI)分析表明,Omifunfun 河代表了研究区最好的栖息地条件,而 Isokun 河被认为是研究区中扰动最严重的采样点。应加强保护 Omifunfun 河的保守努力,以保护其中所有现存的水生生物群和其他可用资源。蜻蜓生物指数(DBI)分析表明,Omifunfun 河代表了研究区最好的栖息地条件,而 Isokun 河被认为是研究区中扰动最严重的采样点。应加强保护 Omifunfun 河的保守努力,以保护其中所有现存的水生生物群和其他可用资源。蜻蜓生物指数(DBI)分析表明,Omifunfun 河代表了研究区最好的栖息地条件,而 Isokun 河被认为是研究区中扰动最严重的采样点。应加强保护 Omifunfun 河的保守努力,以保护其中所有现存的水生生物群和其他可用资源。
更新日期:2019-04-03
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