NDLI: Mapping sources, sinks, and connectivity using a simulation model of northern spotted owls

Content Provider	Springer Nature Link
Author	Schumaker, Nathan H. Brookes, Allen Dunk, Jeffrey R. Woodbridge, Brian Heinrichs, Julie A. Lawler, Joshua J. Carroll, Carlos LaPlante, David
Copyright Year	2014
Abstract	Source-sink dynamics are an emergent property of complex species–landscape interactions. A better understanding of how human activities affect source-sink dynamics has the potential to inform and improve the management of species of conservation concern. Here we use a study of the northern spotted owl (Strix occidentalis caurina) to introduce new methods for quantifying source-sink dynamics that simultaneously describe the population-wide consequences of changes to landscape connectivity. Our spotted owl model is mechanistic, spatially-explicit, individual-based, and incorporates competition with barred owls (Strix varia). Our observations of spotted owl source-sink dynamics could not have been inferred solely from habitat quality, and were sensitive to landscape connectivity and the spatial sampling schemes employed by the model. We conclude that a clear understanding of source-sink dynamics can best be obtained from sampling simultaneously at multiple spatial scales. Our methodology is general, can be readily adapted to other systems, and will work with population models ranging from simple and low-parameter to complex and data-intensive.
Starting Page	579
Ending Page	592
Page Count	14
File Format	PDF
ISSN	09212973
Journal	Landscape Ecology
Volume Number	29
Issue Number	4
e-ISSN	15729761
Language	English
Publisher	Springer Netherlands
Publisher Date	2014-02-23
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	HexSim Habitat connectivity Net flux Population viability analysis Landscape Ecology Plant Ecology Forestry Management Forestry Ecology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Geography, Planning and Development Ecology Nature and Landscape Conservation

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