Aarhus University, Department of Bioscience, Vejlsøvej 25, 8600 Silkeborg, Denmark.
Environ Pollut. 2012 May;164:142-9. doi: 10.1016/j.envpol.2012.01.007. Epub 2012 Feb 21.
Agricultural pesticides continue to impair surface water ecosystems, although there are few assessments of interactions with other modifications such as fine sediment and physical alteration for flood drainage. We, therefore, surveyed pesticide contamination and macroinvertebrates in 14 streams along a gradient of expected pesticide exposure using a paired-reach approach to differentiate effects between physically modified and less modified sites. Apparent pesticides effects on the relative abundance of SPEcies At Risk (SPEAR) were increased at sites with degraded habitats primarily due to the absence of species with specific preferences for hard substrates. Our findings highlight the importance of physical habitat degradation in the assessment and mitigation of pesticide risk in agricultural streams.
农业农药继续损害地表水生态系统，尽管很少有评估与其他改造如细沉积物和洪水排水的物理改造相互作用。因此，我们使用配对流域方法调查了 14 条溪流中的农药污染和大型无脊椎动物，以区分物理改造和较少改造的地点之间的影响。在栖息地退化的地点，SPEcies At Risk (SPEAR) 的相对丰度明显受到农药的影响，主要是由于缺乏对硬底质有特殊偏好的物种。我们的研究结果强调了物理生境退化在评估和减轻农业溪流中农药风险方面的重要性。
