偶发性溪流排水对鳟鱼空间种群结构的影响

IF 2.8 2区 生物学 Q2 ECOLOGY Freshwater Biology Pub Date : 2024-05-20 DOI:10.1111/fwb.14287
Nathaniel P. Hitt, Karli M. Rogers, Karmann G. Kessler, Martin A. Briggs, Jennifer H. Fair, C. Andrew Dolloff
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引用次数: 0

摘要

由于气候变化,预计溪流脱水现象将变得更加普遍,我们探讨了溪流脱水对北美东部温带森林生态系统中的溪鳟(Salvelinus fontinalis)的潜在影响。我们通过 10 年(2012-2021 年)的电鱼调查估算了溪流水池内的鱼类密度(n = 386),并将弗吉尼亚州谢南多尔国家公园内的一条偶发性脱水溪流(Paine Run)与一条保持水流连通的类似大小的溪流(Staunton River)进行了比较。年平均鱼类密度(鱼类/池塘平方米)在幼鱼和成鱼年龄段的河流之间没有差异,但在佩恩河,两个年龄段鱼类密度的空间变化更大。与斯汤顿河相比,佩恩河中未被占用的水池比例更大,附近水池中鱼类密度的空间自相关性也更强,这表明地表水流的破碎限制了鱼类的扩散。我们的研究结果表明,在低流量条件下,水池作为生态庇护所非常重要,偶发性脱水可能会将更多的鱼类阻隔在更少的区域内,从而影响鳟鱼的灭绝风险。我们的研究结果还强调了溪流网络中水文变化的重要性,因为下游的河流测量仪无法预测所观察到的鱼类密度或水池占有率的空间异质性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Effects of episodic stream dewatering on brook trout spatial population structure

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来源期刊
Freshwater Biology
Freshwater Biology 生物-海洋与淡水生物学
CiteScore
5.90
自引率
3.70%
发文量
162
审稿时长
2 months
期刊介绍: Freshwater Biology publishes papers on all aspects of the ecology of inland waters, including rivers and lakes, ground waters, flood plains and other freshwater wetlands. We include studies of micro-organisms, algae, macrophytes, invertebrates, fish and other vertebrates, as well as those concerning whole systems and related physical and chemical aspects of the environment, provided that they have clear biological relevance. Studies may focus at any level in the ecological hierarchy from physiological ecology and animal behaviour, through population dynamics and evolutionary genetics, to community interactions, biogeography and ecosystem functioning. They may also be at any scale: from microhabitat to landscape, and continental to global. Preference is given to research, whether meta-analytical, experimental, theoretical or descriptive, highlighting causal (ecological) mechanisms from which clearly stated hypotheses are derived. Manuscripts with an experimental or conceptual flavour are particularly welcome, as are those or which integrate laboratory and field work, and studies from less well researched areas of the world. Priority is given to submissions that are likely to interest a wide range of readers. We encourage submission of papers well grounded in ecological theory that deal with issues related to the conservation and management of inland waters. Papers interpreting fundamental research in a way that makes clear its applied, strategic or socio-economic relevance are also welcome. Review articles (FRESHWATER BIOLOGY REVIEWS) and discussion papers (OPINION) are also invited: these enable authors to publish high-quality material outside the constraints of standard research papers.
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