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Stream habitat changes along an agricultural impacted stream

机译：河流栖息地改变了农业受影响的流

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We studied changes in stream habitat characteristics along the Agiiera stream (North Spain), a 3rd order stream that drains a 150 km2 rural watershed. Streambed composition differed between the headwaters and the lower reaches of the stream where alluvial deposits exist. Bed substrate was maintained at one site by mechanical rearranging of the bed materials. The riparian forest cover varied from total absence to full cover and was not related to the land use on the banks. Reduction of forest cover was always accompanied by a reduction of the number of species in the forest canopy. We conclude that: (1) large differences in stream habitat quality can be observed over short distances (less than 2 km), (2) stream habitat changes are difficult to predict as a function of the land use that is dominant on the stream banks, and (3) at the reach level, stream habitat characteristics depend on the resiliency of the stream corridor and on the management practices being applied.
机译：我们研究了Agiiera Stream（北西班牙）的溪流栖息地特征的变化，这是一个第三订单流，耗尽150平方公里的农村流域。河流组合物在返波中不同，并且存在冲积沉积物的流的下游。通过机械重新排列床材料在一个位点保持床基质。河岸森林掩护从完全缺席到全面覆盖而变化，与银行的土地使用无关。减少森林覆盖始终伴随着森林冠层中物种数量的减少。我们得出结论：（1）可以在短距离（不到2公里）的情况下观察到溪流栖息地质量的大差异，（2）流栖息地变化很难预测，因为土地利用在流银行上占据占主导地位的函数（3）在达到水平，河流栖息地特征取决于流走廊的弹性以及应用的管理实践。

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