In this review, we discuss the role of hedgerow structure and condition in determining the value of hedgerow habitat for biodiversity conservation within an agricultural context, to inform and evaluate hedgerow management decisions and policy. Through a systematic literature review, narrative synthesis and vote counting, key structural condition indicators were identified for a range of conservation priority taxa. Abundance, survival or fecundity of ground vegetation, birds, mammals and invertebrates were affected by height, width, woody biomass, foliar quality and quantity, and gappiness of hedgerows. Although general patterns may not occur, a response to a particular structural feature can vary both within and between taxonomic groups, many responses are synergistic and interdependent. In conclusion, the definition of a “good quality” hedgerow for biodiversity conservation should be expanded to include all those key structural features which are important across taxa. Furthermore, the importance of heterogeneity in hedgerow structural condition is highlighted, where no fixed set of hedgerow characteristics were found to benefit all taxa. If uniform hedgerow management is overprescribed, as has been the tendency with some agri-environment schemes, some species (including those of conservation concern) are likely to be adversely affected by a loss of suitable habitat or resource decline.

中文翻译：

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绿篱结构条件对养殖景观中野生动物栖息地供应的影响

在这篇综述中，我们讨论了树篱结构和条件在确定农业背景下树篱栖息地对生物多样性保护的价值方面的作用，以告知和评估树篱管理决策和政策。通过系统的文献综述、叙述综合和计票，确定了一系列保护优先类群的关键结构条件指标。地面植被、鸟类、哺乳动物和无脊椎动物的丰度、生存或繁殖力受到高度、宽度、木质生物量、叶质和数量以及树篱间隙的影响。尽管一般模式可能不会出现，但对特定结构特征的反应可能在分类群内部和分类群之间有所不同，但许多反应是协同和相互依赖的。总之，生物多样性保护的“优质”树篱的定义应扩大到包括所有对整个类群都很重要的关键结构特征。此外，强调了树篱结构条件异质性的重要性，没有发现一组固定的树篱特征对所有类群有利。如果过度规定统一的树篱管理，就像一些农业环境计划的趋势一样，一些物种（包括那些受保护的物种）可能会因适当栖息地的丧失或资源减少而受到不利影响。