A framework for incorporating fine-scale dispersal behaviour into biodiversity conservation planning

Lechner, Alex M., Doerr, Veronica, Harris, Rebecca M. B., Doerr, Erik and Lefroy, Edward C. (2015) A framework for incorporating fine-scale dispersal behaviour into biodiversity conservation planning. Landscape and Urban Planning, 141 11-23. doi:10.1016/j.landurbplan.2015.04.008

Author Lechner, Alex M.
Doerr, Veronica
Harris, Rebecca M. B.
Doerr, Erik
Lefroy, Edward C.
Title A framework for incorporating fine-scale dispersal behaviour into biodiversity conservation planning
Journal name Landscape and Urban Planning   Check publisher's open access policy
ISSN 0169-2046
Publication date 2015-09-01
Sub-type Article (original research)
DOI 10.1016/j.landurbplan.2015.04.008
Open Access Status
Volume 141
Start page 11
End page 23
Total pages 13
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2016
Language eng
Abstract Fine-scale landscape features such as scattered trees are increasingly thought to be critical for dispersal, and need to be considered in connectivity modelling and planning. Yet existing modelling approaches struggle to adequately take fine-scale features and threshold dynamics of dispersal behaviour into account, in part because of computational limitations. We present a framework for modelling connectivity at fine spatial resolutions over large spatial extents. Our framework involves a novel approach to characterising fine-scale dispersal behaviour within the context of existing modelling methods, and uses key parameters of dispersal behaviour to link models and their interpretation at multiple scales. We address computational limitations by creating a gap-crossing threshold layer, which identifies areas where dispersal is possible because of the presence and spacing of fine-scale connectivity elements. This layer is combined with a dispersal-cost layer within a graph-network analysis to identify the optimal least-cost path between patches. Graph metrics are used to assess the importance of specific patches at the regional-scale and to describe connectivity for the whole landscape. A local-scale connectivity model using the Circuitscape software complements the regional analysis outputs by considering all possible pathways across a landscape simultaneously rather than a single least-cost path. The framework was designed specifically to be applied by land use planners who need to quantify the impacts of property development on fine-scale connectivity, yet need to assess implications at the regional scale. We demonstrate the framework by applying it in the Lower Hunter region, Australia.
Keyword Circuitscape
Conservation planning
Graph theory
Least-cost paths
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Social Responsibility in Mining Publications
Official 2016 Collection
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 2 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 2 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Mon, 18 May 2015, 06:14:30 EST by Dr Alex Lechner on behalf of Centre for Social Responsibility in Mining