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Effects of management intensity, function and vegetation on the biodiversity in urban ponds

Blicharska, Malgorzata and Andersson, Johan and Bergsten, Johannes and Bjelke, Ulf and Hilding-Rydevik, Tuija and Johansson, Frank (2016). Effects of management intensity, function and vegetation on the biodiversity in urban ponds. Urban forestry & urban greening. 20, 103-112
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Official URL: http://dx.doi.org/10.1016/j.ufug.2016.08.012

Abstract

Ponds are important elements of green areas in cities that help counteract the negative consequences of urbanization, by providing important habitats for biodiversity in cities and being essential nodes in the overall landscape-scale habitat network. However, there is relatively little knowledge about the impacts of pond management intensity, function and environmental variables on urban pond biodiversity. In this study we addressed this gap by investigating which factors were correlated with the level of biodiversity in urban ponds, indicated by species richness of aquatic insects, in Stockholm, Sweden. Our study did not confirm any direct link between the perceived intensity of management or function of ponds and overall biodiversity. However, it seems that management can influence particular groups of species indirectly, since we found that Trichoptera richness (Caddisflies) was highest at intermediate management intensity. We suggest that this is caused by management of vegetation, as the amount of floating and emergent vegetation was significantly correlated with both the overall species richness and the richness of Trichoptera (Caddisflies). This relationship was non-linear, since ponds with an intermediate coverage of vegetation had the highest richness. Interestingly, the amount of vegetation in the pond was significantly affected by pond function and pond management. The overall species richness and richness of Trichoptera were also positively correlated with pond size. Since we found that the pattern of relations between species richness and environmental variables differed between the insect groups we suggest that it will be difficult to provide overall design and management recommendations for ponds in urban green areas. Therefore, it is recommended that to provide high aquatic diversity of species in urban areas one should aim at promoting high diversity of different types of ponds with differing management and environmental factors that shape them.

Authors/Creators:Blicharska, Malgorzata and Andersson, Johan and Bergsten, Johannes and Bjelke, Ulf and Hilding-Rydevik, Tuija and Johansson, Frank
Title:Effects of management intensity, function and vegetation on the biodiversity in urban ponds
Series/Journal:Urban forestry & urban greening (1618-8667)
Year of publishing :2016
Volume:20
Page range:103-112
Number of Pages:10
Publisher:Elsevier
ISSN:1618-8667
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:P Natural resources > P01 Nature conservation and land resources
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
Keywords:Aquatic insects, Biodiversity, Pond function, Pond management, Pond vegetation, Urban
URN:NBN:urn:nbn:se:slu:epsilon-e-4036
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-4036
Additional ID:
Type of IDID
UNSPECIFIED000391471000012
DOIUNSPECIFIED
ID Code:14179
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Swedish Species Information Centre
(NL, NJ) > Swedish Biodiversity Centre
Deposited By: SLUpub Connector
Deposited On:27 Mar 2017 07:52
Metadata Last Modified:27 Mar 2017 07:52

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