Promoting dragonfly diversity in cities: major determinants and implications for urban pond design

作者: Diana Goertzen , Frank Suhling

DOI: 10.1007/S10841-012-9522-Z

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摘要: Urbanisation is increasing and it essential to integrate biodiversity into the spatial planning of urban areas. This requires deeper understanding patterns in cities. We investigated which habitat variables are major determinants dragonfly diversity species assemblage structure municipal area Dortmund (Germany). sampled larvae 33 ponds situated city parks, commercial, residential agricultural recorded 30 autochthonous with richness ranging from zero 17. Additionally, we surveyed a set environmental including size, water level, pond structures vegetation as well surrounding landscape potential disturbances like waterfowl fish. Multivariate methods were used identify diversity, abundance structure. Analysis indicated that aquatic terrestrial affected positively. City park had low but Ischnura elegans was obviously promoted by specific conditions, high density. found five assemblages mostly determined generalistic related different types. Moderately disturbed ruderal pioneer areas also contained increased numbers rare species. Our results indicate may have great value for maintaining biodiversity, various negative impact. To promote suggest natural design well-vegetated types particularly more-natural redesign ponds.

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