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首页> 外文期刊>The Science of the Total Environment >Does river restoration work? Taxonomic and functional trajectories at two restoration schemes
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Does river restoration work? Taxonomic and functional trajectories at two restoration schemes

机译：河道恢复工作了吗？两种修复方案的分类和功能轨迹

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AbstractRivers and their floodplains have been severely degraded with increasing global activity and expenditure undertaken on restoration measures to address the degradation. Early restoration schemes focused on habitat creation with mixed ecological success. Part of the lack of ecological success can be attributed to the lack of effective monitoring. The current focus of river restoration practice is the restoration of physical processes and functioning of systems. The ecological assessment of restoration schemes may need to follow the same approach and consider whether schemes restore functional diversity in addition to taxonomic diversity. This paper examines whether two restoration schemes, on lowland UK rivers, restored macroinvertebrate taxonomic and functional (trait) diversity and relates the findings to the Bradshaw's model of ecological restoration. The study schemes are considered a success in terms of restoring physical processes, longitudinal connectivity and the resulting habitat composition. However, the rehabilitation of macroinvertebrate community structure and function was limited and inconsistent, varying over time, depending on the restoration measure applied and the taxonomic or functional index considered. Resampling of species pools at each site revealed a role for functional redundancy, meaning that increases in functional diversity are more difficult to achieve than outcomes based on taxonomic analyses. Our results highlight the usefulness of applying functional traits alongside taxonomic indices in evaluating river restoration projects.Graphical abstractDisplay OmittedHighlights•Restoration of natural process was the aim of two river restoration case studies.•The projects restored physical habitat composition.•Rehabilitation of macroinvertebrate structural complexity was limited.•Restoration of functional integrity was more difficult to achieve.•Functional traits are useful in evaluating river restoration projects.
机译： 摘要 图形摘要 省略显示 突出显示 • 恢复自然过程是两河恢复的目标定量案例研究。 • 这些项目恢复了物理栖息地的组成。 • 恢复无脊椎动物的结构复杂性受到限制。 • 恢复功能完整性更加困难。 • 功能性状在评估河流恢复项目时很有用。

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