How Surface Water Management Can Benefit Fish Conservation in Urban Streams

IF 0.9 4区 环境科学与生态学 Q4 BIODIVERSITY CONSERVATION Journal of Fish and Wildlife Management Pub Date : 2021-06-16 DOI:10.3996/jfwm-20-051
W. A. Wilson, Maria Wipfler, Josh Stevens
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引用次数: 0

Abstract

We analyzed 33 y of fish community data collected from a low-order, urban stream in central Illinois, USA, to determine the effects of municipal wastewater management projects and urbanization on fish communities. From 1985 to 2017, species richness, number of pollution-intolerant species, and alternative index of biotic integrity significantly increased at sites across this system. Species diversity likewise increased, but was mostly significant only at sites downstream of the effluent outflow. Ceasing the chlorination of wastewater in 1990 resulted in significant increases in fish community metrics both upstream and downstream of effluent outflow, although effects varied from site to site. Completing a combined sewer overflow abatement project in 2008 resulted in some significant increases in species richness, diversity, and number of pollution-intolerant species at sites downstream of effluent outflow. From 2001 to 2016, the change in the number of pollution-intolerant species correlated inversely with the increased percentage of impervious cover in the study system. There was no significant correlation of other metrics with the change in percent impervious surfaces. These results suggest that urbanization at upstream sites limited to some extent the benefits of water management interventions that improved fish community metrics at downstream sites.
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地表水管理如何有益于城市溪流的鱼类保育
为了确定城市污水管理项目和城市化对鱼类群落的影响,我们分析了美国伊利诺斯州中部一条低阶城市河流中收集的33年鱼类群落数据。从1985年到2017年,该系统各站点的物种丰富度、不耐污染物种数量和生物完整性替代指数显著增加。物种多样性也有所增加,但主要集中在污水出口下游。1990年停止对废水进行氯化处理,导致废水流出的上游和下游的鱼类群落指标显著增加,尽管影响因地而异。2008年完成的污水溢流综合治理项目使污水下游地区的物种丰富度、多样性和耐污染物种数量显著增加。从2001年到2016年,研究系统中不耐污染物种数量的变化与不透水覆盖百分比的增加呈负相关。其他指标与不透水表面百分比的变化没有显著的相关性。这些结果表明,上游地区的城市化在一定程度上限制了改善下游地区鱼类群落指标的水管理干预措施的效益。
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来源期刊
Journal of Fish and Wildlife Management
Journal of Fish and Wildlife Management BIODIVERSITY CONSERVATION-ECOLOGY
CiteScore
1.60
自引率
0.00%
发文量
43
审稿时长
>12 weeks
期刊介绍: Journal of Fish and Wildlife Management encourages submission of original, high quality, English-language scientific papers on the practical application and integration of science to conservation and management of native North American fish, wildlife, plants and their habitats in the following categories: Articles, Notes, Surveys and Issues and Perspectives. Papers that do not relate directly to native North American fish, wildlife plants or their habitats may be considered if they highlight species that are closely related to, or conservation issues that are germane to, those in North America.
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