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The importance of blue and green landscape connectivity for biodiversity in urban ponds

Hyseni, Chaz and Heino, Jani and Bini, Luis Mauricio and Bjelke, Ulf and Johansson, Frank (2021). The importance of blue and green landscape connectivity for biodiversity in urban ponds. Basic and Applied Ecology. 57 , 129-145
[Research article]

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Abstract

The negative impact of urbanization on biodiversity can be buffered by blue (e.g., rivers, ponds) and green (e.g., parks, forests) spaces. However, to prevent biodiversity loss and reduce the risk of local extinctions, blue and green spaces need to be connected by corridors, so that organisms may disperse between sites. Landscape connectivity affects local community composition and metacommunity dynamics by facilitating dispersal. The goal of this study was to test the relative roles of pond environmental properties, spatial structure, and functional landscape connectivity on differentiation of invertebrate metacommunities in urban ponds in the city of Stockholm, Sweden. We characterized functional connectivity as blue connectivity (distance to water bodies), green connectivity (land use), and combined blue-green connectivity. We estimated functional connectivity by using electrical circuit theory to identify dispersal corridors. Interestingly, while circuit theory is often used in single-taxon studies, this method has rarely been applied to multiple taxa forming a metacommunity, as we have done in this study. Indeed, our study contributes toward an increased focus on the role of dispersal at the metacommunity level. We deter-mined that functional connectivity was the most important factor in explaining community differentiation, with the local environment contributing comparatively little, and spatial structure the least. Combined blue-green functional connectivity had a major influence on structuring urban pond communities, explaining 7.8% of the variance in community composition across ponds. Furthermore, we found that increased functional connectivity was associated with an increase in the number of species. In summary, our results suggest that to preserve biodiversity in urban ponds, it is important to enhance functional connectivity, and that open green spaces could augment blue corridors in maintaining functional connectivity in urban pond metacommunities. To generalize these findings, future urban biodiversity studies should compare how functional connectivity affects meta-communities across multiple major cities. (C) 2021 The Author(s). Published by Elsevier GmbH on behalf of Gesellschaft fur Okologie.

Authors/Creators:Hyseni, Chaz and Heino, Jani and Bini, Luis Mauricio and Bjelke, Ulf and Johansson, Frank
Title:The importance of blue and green landscape connectivity for biodiversity in urban ponds
Series Name/Journal:Basic and Applied Ecology
Year of publishing :2021
Volume:57
Page range:129-145
Number of Pages:17
Publisher:ELSEVIER GMBH
ISSN:1439-1791
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
Keywords:Aquatic fauna, Circuit theory, Dispersal corridors, Invertebrates, Landscape resistance, Metacommunity dynamics
URN:NBN:urn:nbn:se:slu:epsilon-p-114926
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-114926
Additional ID:
Type of IDID
DOI10.1016/j.baae.2021.10.004
Web of Science (WoS)000724055100004
ID Code:26358
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Swedish Species Information Centre
Deposited By: SLUpub Connector
Deposited On:20 Dec 2021 16:25
Metadata Last Modified:20 Dec 2021 16:31

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