Resource patchiness, dispersal and species co-occurrence: an experimental and levels-of-evidence approach in some lowland streams

数百万美元用于恢复河流生态系统，这些生态系统往往因人类活动而高度简化。 重要的是，这种恢复必须以健全的生态知识为基础。我们将测试食物和生活空间的基本资源的可用性如何影响物种的身份和密度。我们希望提供实用的建议，使管理人员能够提高周围的河流生物多样性，并服务于农业地区。同样，我们将能够就过度取水对流量变化很大的河流恢复可能取得成功的后果提出建议。

Millions of dollars are being spent on rehabilitating river ecosystems that have often been highly simplified by human activities. It is important that such rehabilitation be well-grounded in sound ecological knowledge. We will test how the availability of essential resources of food and living space affect the identity and density of species present. We expect to provide practical advice allowing managers to enhance biodiversity in streams surrounded by, and serving, agricultural areas. Likewise, we will be able to advise on the consequences of excessive water extraction on the likely success of such rehabilitation in rivers with highly variable flows.