Title: Local habitat characteristics have a stronger effect than the surrounding urban landscape on beetle communities on green roof
Authors : Kyrö, Kukka
Brenneisen, Stephan
Kotze, Johan
Szallies, Alexander
Gerner, Magdalena
Lehvävirta, Susanna
Published in : Urban Forestry & Urban Greening
Volume(Issue) : 29
Pages : 122
Pages to: 130
Publisher / Ed. Institution : Elsevier
Issue Date: Jan-2018
License (according to publishing contract) : Not specified
Type of review: Peer review (Publication)
Language : English
Subjects : Coleoptera; Vegetated roofs; Pitfall traps; Patch characteristics; Green infrastructure; Landscape configuration
Subject (DDC) : 577: Ecology
711: Area planning
Abstract: Green roofs are a promising tool to return nature to cities and mitigate biodiversity loss brought about by urbanization. Yet, we lack basic information on how green roofs contribute to biodiversity and how their placement in the urban landscape affects different taxa and community composition. We studied the effects of local and landscape variables on beetle communities on green roofs. We expected that both local roof characteristics and urban landscape composition shape communities, but that their relative importance depends on species characteristics. Using pitfall traps, we collected beetles during two consecutive years from 17 green roofs in Basel, Switzerland. We evaluated the contribution of six local and six landscape variables to beetle community structure and to the responses of individual species. Communities on the roofs consisted of mobile and open dryhabitat species, with both local and landscape variables playing a role in structuring these communities. At the individual species level, local roof variables were more important than characteristics of the surrounding urban landscape. The most influential factors affecting the abundances of beetle species were vegetation, described as forb and grass cover (mainly positive), and roof age (mainly negative). Therefore, we suggest that the careful planning of green roofs with diverse vegetation is essential to increase their value as habitat for beetles. In addition, while beetle communities on green roofs can be diverse regardless of their placement in the urban landscape, the lack of wingless species indicates the need to increase the connectivity of green roofs to ground level habitats.
Departement: Life Sciences und Facility Management
Organisational Unit: Institute of Natural Resource Sciences (IUNR)
Publication type: Article in scientific Journal
DOI : 10.1016/j.ufug.2017.11.009
ISSN: 1618-8667
URI: https://digitalcollection.zhaw.ch/handle/11475/11310
Appears in Collections:Publikationen Life Sciences und Facility Management

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