Patch-based graphs of landscape connectivity: A guide to construction, analysis and application for conservation |
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Authors: | Paul Galpern Micheline Manseau Andrew Fall |
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Affiliation: | aNatural Resources Institute, University of Manitoba, 70 Dysart Road, Winnipeg, MB, Canada R3T 2N2;bParks Canada, 145 McDermot Avenue, Winnipeg, MB, Canada R3B 0R9;cSchool of Resource and Environmental Management, Simon Fraser University, Burnaby, BC, Canada;dGowlland Technologies Ltd., Tucker Bay Road, Lasqueti Island, BC, Canada V0R 2J0 |
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Abstract: | Graph theory has become a popular tool for modelling the functional connectivity of landscapes. We conduct a review of studies that use graph theory to model connectivity among patches of habitat (patch-based graphs), with the intention of identifying typical research questions and their associated graph construction and analysis methods. We identify and examine nine questions of conservation importance that can be answered with these types of graph models, discussing appropriate applications of these questions and presenting a guide for using graph methods to answer them. We also investigate how the connectivity predictions of patch-based graphs have been assessed and emphasize the importance of empirical evaluation. Our findings identify commonality among diverse approaches and methodological gaps with an aim to improve application and to help the integration of graph theory and ecological analysis. |
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Keywords: | Landscape graphs Patch-based graphs Functional connectivity Actual connectivity Graph theory |
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