河流蓄水对泛滥平原浮游动物群落β多样性的可能影响

Carlos Eduardo A. Soares , Luiz Felipe M. Velho , Fábio A. Lansac-Tôha , Claudia C. Bonecker , Victor L. Landeiro , Luis Mauricio Bini
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引用次数: 23

摘要

使用长期数据集,我们测试了上巴拉那河泛滥平原浮游动物群落的β多样性是否在环境异质性和生产力较高的时期增加,并随着水位的增加而减少(当站点之间的连通性较高时)。我们检测到β多样性增加的时间趋势。物种占有率的时间减少比时间增加更频繁。我们的研究结果并不支持β多样性与环境异质性或生产力之间的普遍联系。水位变化是一个重要的解释变量,只对轮虫来说,而且方向与预期相反。总的来说,我们的研究结果表明,我们还远远没有全面了解β多样性变化的潜在过程。我们推测,研究区域上游建造的大量水坝可能是β多样性呈积极趋势的原因。
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The likely effects of river impoundment on beta-diversity of a floodplain zooplankton metacommunity
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来源期刊
Natureza & Conservacao
Natureza & Conservacao 环境科学-生物多样性保护
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