NDLI: Sensitivity of resource selection and connectivity models to landscape definition

Content Provider	Springer Nature Link
Author	Zeller, Katherine A. McGarigal, Kevin Cushman, Samuel A. Beier, Paul Vickers, T. Winston Boyce, Walter M.
Copyright Year	2017
Abstract	The definition of the geospatial landscape is the underlying basis for species-habitat models, yet sensitivity of habitat use inference, predicted probability surfaces, and connectivity models to landscape definition has received little attention.We evaluated the sensitivity of resource selection and connectivity models to four landscape definition choices including (1) the type of geospatial layers used, (2) layer source, (3) thematic resolution, and (4) spatial grain.We used GPS telemetry data from pumas (Puma concolor) in southern California to create multi-scale path selection function models (PathSFs) across landscapes with 2500 unique landscape definitions. To create the landscape definitions, we identified seven geospatial layers that have been shown to influence puma habitat use. We then varied the number, sources, spatial grain, and thematic resolutions of these layers to create our suite of plausible landscape definitions. We assessed how PathSF model performance (based on AIC) was affected by landscape definition and examined variability among the predicted probability of movement surfaces, connectivity models, and road crossing locations.We found model performance was extremely sensitive to landscape definition and identified only seven top models out of our suite of definitions (<1%). Spatial grain and the number of geospatial layers selected for a landscape definition significantly affected model performance measures, with finer grains and greater numbers of layers increasing model performance.Given the sensitivity of habitat use inference, predicted probability surfaces, and connectivity models to landscape definition, out results indicate the need for increased attention to landscape definition in future studies.
Starting Page	835
Ending Page	855
Page Count	21
File Format	PDF
ISSN	09212973
Journal	Landscape Ecology
Volume Number	32
Issue Number	4
e-ISSN	15729761
Language	English
Publisher	Springer Netherlands
Publisher Date	2017-02-22
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Species-habitat relationships Resource selection function Spatial grain Thematic resolution Puma concolor Connectivity Corridor Resistance Landscape Ecology Ecology Nature Conservation Landscape/Regional and Urban Planning Sustainable Development Environmental Management
Content Type	Text
Resource Type	Article
Subject	Geography, Planning and Development Ecology Nature and Landscape Conservation

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