NDLI: Evaluating functional connectivity with matrix behavior uncertainty for an endangered butterfly

Content Provider	Springer Nature Link
Author	Severns, Paul M. McIntire, Eliot J. B. Schultz, Cheryl B.
Copyright Year	2013
Abstract	Understanding animal responses to landscape elements helps forecast population reactions to changing landscape conditions. The challenge is that some behaviors are poorly known and difficult to estimate. We assessed how uncertainty in behavioral responses to dense woods, an avoided landscape structure, impacts functional connectivity among reproductive habitat patches for Fender’s blue butterfly, an endangered prairie species of western Oregon, USA. We designed a factorial simulation experiment using a spatially explicit individual-based model to project functional connectivity for female butterflies across current and alternative landscapes. We varied the probability of dense woods entry and turning angle standard deviation for movements within the dense woods over a range of biologically reasonable and observed values. Butterflies in the current landscape (46 % dense woods) and one with prairie encroached by forest (60 % dense woods) showed reductions in functional connectivity estimates consistent with the expectations of habitat fragmentation. Although dense woods entrance uncertainty impacted functional connectivity projections, uncertainty in the dense woods turning angle standard deviation had comparatively little impact on connectivity estimates. Reduction and reconfiguration of the current dense woods to 27 % cover (restored landscape) appeared to facilitate a corridor behavior in dispersing individuals, likely providing a functional connectivity estimate comparable to the historic landscape (<5 % dense woods). Our simulations suggest that additional study of butterfly movement within the dense woods is unnecessary and that a partial reduction in dense woods would be sufficient to achieve historic levels of functional connectivity for Fender’s blue across the study landscape.
Starting Page	559
Ending Page	569
Page Count	11
File Format	PDF
ISSN	09212973
Journal	Landscape Ecology
Volume Number	28
Issue Number	3
e-ISSN	15729761
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-02-27
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Habitat fragmentation Functional connectivity SEIBM Biased correlated random walk Matrix configuration Habitat restoration 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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