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生物通
8 个月
小型河流与溪流生境异质性及渠化对鱼类群落的影响:生态梯度响应 ...
这篇研究通过多变量分析(PCA)和典范对应分析(CCA)揭示了波兰Drawa河流域小型溪流的物理生境梯度(如底质类型、水生植物覆盖、河道干预)对鱼类群落结构和多样性的显著影响。研究发现,水生植物覆盖与鱼类生物量及丰度呈负相关,而生境异质性通过 ...
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