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首页> 外文期刊>The American Midland Naturalist >Stream Salamander Species Richness and Abundance in Relation toEnvironmental Factors in Shenandoah National Park, Virginia
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Stream Salamander Species Richness and Abundance in Relation toEnvironmental Factors in Shenandoah National Park, Virginia

机译：弗吉尼亚谢南多厄国家公园的Sal流物种丰富度与环境因素的关系

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摘要

Stream salamanders are sensitive to acid mine drainage and may be sensitive to acidification and low acid neutralizing capacity (ANC) of a watershed. Streams in Shenandoah National Park, Virginia, are subject to episodic acidification from precipitation events. We surveyed 25 m by 2 m transects located on the stream bank adjacent to the water channel in Shenandoah National Park for salamanders using a stratified random sampling design based on elevation, aspect and bedrock geology. We investigated the relationships of four species (Eurycea bislineata, Desmognathus fuscus, D. monticola and Gyrinophilus porphyriticus) to habitat and water quality variables. We did not find overwhelming evidence that stream salamanders are affected by the acid-base status of streams in Shenandoah National Park. Desmognathus fuscus and D. monticola abundance was greater both in streams that had a higher potential to neutralize acidification, and in higher elevation (>700 m) streams. Neither abundance of E. bislineata nor species richness were related to any of the habitat variables. Our sampling method preferentially detected the adult age class of the study species and did not allow us to estimate population sizes. We suggest that continued monitoring of stream salamander populations in SNP will determine the effects of stream acidification on these taxa.
机译：河sal对酸性矿山的排水很敏感，可能对流域的酸化和低酸中和能力（ANC）敏感。弗吉尼亚州谢南多厄国家公园的溪流会因降水事件而发生间歇性酸化。我们使用了基于高程，坡向和基岩地质的分层随机抽样设计，对位于谢南多厄国家公园水道附近的河岸处的sal进行了25 m×2 m的样地调查。我们调查了四种物种（Eurycea bislineata，Desmognathus fuscus，D. monticola和Gyrinophilus porphyriticus）与栖息地和水质变量的关系。我们没有发现绝大多数证据表明小河sal受到雪兰多厄国家公园小溪的酸碱状态的影响。在中和酸度的潜力较高的溪流和海拔较高的溪流（> 700 m）中，浓厚的Desmognathus fuscus和D. monticola的丰度都较高。丰富的双孢大肠杆菌和物种丰富度都与任何生境变量都没有关系。我们的抽样方法优先检测了研究物种的成年年龄，因此我们无法估算种群数量。我们建议继续监测SNP中的sal种群将确定溪流酸化对这些类群的影响。

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