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Approaches to urban vegetation management and the impacts on urban bird and bat assemblages

机译：城市植被管理的方法及其对城市鸟类和蝙蝠组合的影响

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To balance the needs of people and biodiversity in cities, local governments are increasingly incorporating green spaces and urban greening initiatives into urban planning frameworks. Despite this, there is little information on which vegetation features or management actions are most useful in supporting biodiversity within these green spaces. We assess the effect of three vegetation management approaches that are commonly suggested to improve outcomes for urban biodiversity, including: (1) increasing the proportion of native vegetation; (2) increasing the density of trees, and (3) increasing the volume or complexity of understorey vegetation. We use a network of 39 urban green spaces (including golf courses, public parks and residential neighbourhoods) to assess how these vegetation management approaches impact urban bird and bat communities. The richness of both birds and bats increased with an increase in the proportion of native plants, bird species richness increased with increasing volume of understorey vegetation, and increasing large tree density led to increased bat activity. Our study suggests that increasing native vegetation composition and understorey vegetation volume, and the retention of large trees are practical vegetation management approaches that improve outcomes for urban birds and bats. Our data also suggests that as urbanisation and infill development proceeds, retention of large green spaces (such as golf courses) will be critical for urban biodiversity conservation, as these areas supported a component of the bird and bat fauna which was not recorded in other green space types. (C) 2016 Elsevier B.V. All rights reserved.
机译：为了平衡城市人口和生物多样性的需求，地方政府越来越多地将绿地和城市绿化计划纳入城市规划框架。尽管如此，关于哪种植被特征或管理措施对支持这些绿色空间中的生物多样性最有用的信息很少。我们评估了三种通常被建议用来改善城市生物多样性成果的植被管理方法的效果，包括：（1）增加本地植被的比例; （2）增加树木的密度，以及（3）增加地下植被的数量或复杂性。我们使用39个城市绿地（包括高尔夫球场，公园和居民区）的网络来评估这些植被管理方法如何影响城市鸟类和蝙蝠群落。鸟类和蝙蝠的丰富度都随着本地植物比例的增加而增加，鸟类物种的丰富度随着下层植被的数量增加而增加，大树密度的增加导致蝙蝠的活动增加。我们的研究表明，增加本地植被组成和林下植被数量，以及保留大树是实用的植被管理方法，可改善城市鸟类和蝙蝠的结实。我们的数据还表明，随着城市化和填充开发的进行，保留大型绿色空间（例如高尔夫球场）对于城市生物多样性保护至关重要，因为这些区域支持鸟类和蝙蝠动物群的一部分，而其他绿色没有记录到这一点。空间类型。 （C）2016 Elsevier B.V.保留所有权利。

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