Skip to main content
Research article - Peer-reviewed, 2016

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

Blicharska, Malgorzata; Andersson, Johan; Bergsten, Johannes; Bjelke, Ulf; Hilding-Rydevik, Tuija; Johansson, Frank; Blicharska, Malgorzata

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. (C) 2016 The Authors. Published by Elsevier GmbH. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Keywords

Aquatic insects; Biodiversity; Pond function; Pond management; Pond vegetation; Urban

Published in

Urban Forestry and Urban Greening
2016, volume: 20, pages: 103-112
Publisher: ELSEVIER GMBH, URBAN & FISCHER VERLAG

Authors' information

Blicharska, Malgorzata
Uppsala University
Andersson, Johan
Uppsala University
Bergsten, Johannes
Swedish Museum of Natural History
Swedish University of Agricultural Sciences, Swedish Species Information Centre
Swedish University of Agricultural Sciences, Swedish Biodiversity Centre
Johansson, Frank
Uppsala University
Blicharska, Malgorzata
Swedish University of Agricultural Sciences, Swedish Biodiversity Centre

Sustainable Development Goals

SDG11 Sustainable cities and communities

UKÄ Subject classification

Environmental Sciences

Publication Identifiers

DOI: https://doi.org/10.1016/j.ufug.2016.08.012

URI (permanent link to this page)

https://res.slu.se/id/publ/80371