Insect pollinator and natural enemy communities in green roof and ground-level urban habitats

IF 2.5 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Urban Ecosystems Pub Date : 2024-01-09 DOI:10.1007/s11252-023-01499-6
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Abstract

Urban greenspaces, including green roofs and ground-level urban habitats provide habitat for insect communities in cities. However, beneficial insect communities likely differ between human-managed habitats because of varying provision of resources and connectivity in these greenspaces. This study examined the insect communities in four extensive green roofs and three non-adjacent, similarly structured, managed ground-level habitats. We detected a high degree of overlap in insect taxa but found moderate differences in overall insect community composition between the green roof and ground-level habitats. While there was no difference in Shannon diversity between green roofs and ground-level habitats, the ground-level habitat had greater insect taxa richness. Green roof and ground-level habitats supported pollinators and natural enemies, while ground-level had greater mean pollinator and natural enemy richness and Shannon diversity. Green roofs intentionally designed for biodiversity using native plants for habitat did not differ from those designed for stormwater management and energy reduction using non-native plants in insect community metrics used in this study. These findings suggest that urban greenspaces continue to provide valuable habitat while connectivity and structure play a role in shaping urban insect communities.

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绿色屋顶和地面城市栖息地的昆虫授粉者和天敌群落
摘要 城市绿地,包括绿色屋顶和城市地面栖息地,为城市中的昆虫群落提供了栖息地。然而,由于这些绿地提供的资源和连通性不同,人类管理的栖息地之间的益虫群落也可能不同。本研究考察了四个大面积屋顶绿地和三个不相邻、结构类似、有管理的地面生境中的昆虫群落。我们发现昆虫类群有很大程度的重叠,但屋顶绿地和地面栖息地的昆虫群落组成总体上差异不大。虽然屋顶绿化生境和地面生境的香农多样性没有差异,但地面生境的昆虫类群丰富度更高。绿色屋顶和地面栖息地都支持传粉昆虫和天敌,而地面栖息地的平均传粉昆虫和天敌丰富度和香农多样性更高。在本研究使用的昆虫群落指标方面,为生物多样性而有意设计的、使用本地植物作为栖息地的绿色屋顶与为雨水管理和节能而设计的、使用非本地植物的绿色屋顶没有区别。这些研究结果表明,城市绿地仍可提供宝贵的栖息地,而连通性和结构则在塑造城市昆虫群落方面发挥作用。
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来源期刊
Urban Ecosystems
Urban Ecosystems BIODIVERSITY CONSERVATION-ECOLOGY
CiteScore
5.70
自引率
6.90%
发文量
113
期刊介绍: Urban Ecosystems is an international journal devoted to scientific investigations of urban environments and the relationships between socioeconomic and ecological structures and processes in urban environments. The scope of the journal is broad, including interactions between urban ecosystems and associated suburban and rural environments. Contributions may span a range of specific subject areas as they may apply to urban environments: biodiversity, biogeochemistry, conservation biology, wildlife and fisheries management, ecosystem ecology, ecosystem services, environmental chemistry, hydrology, landscape architecture, meteorology and climate, policy, population biology, social and human ecology, soil science, and urban planning.
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