Skip to Main Content
Cross-scale occupancy dynamics of a postfire specialist in response to variation across a fire regimeAuthor(s): Morgan W. Tingley; Andrew N. Stillman; Robert L. Wilkerson; Christine A. Howell; Sarah C. Sawyer; Rodney B. Siegel
Source: Journal of Animal Ecology. 209: 333
Publication Series: Scientific Journal (JRNL)
Station: Pacific Southwest Research Station
Download Publication (822.0 KB)
- Fire creates challenges and opportunities for wildlife through rapid destruction, modification and creation of habitat. Fire has spatially variable effects on landscapes; however, for species that benefit from the ephemeral resource patches created by fire, it is critical to understand characteristics of fires that promote postfire colonization and persistence and the spatial scales on which they operate.
- Using a model postfire specialist, the black‐backed woodpecker (Picoides arcticus), we examined how colonization and persistence varied across two spatial scales as a function of four characteristics of fire regimes—fire severity, fire size, fire ignition date and number of years since fire.
- We modelled black‐backed woodpecker colonization and persistence using data from 108 recently burned forests in the Sierra Nevada and southern Cascades ecoregions of California, USA, that we monitored for up to 10 years following fire. We employed a novel, spatially hierarchical, dynamic occupancy framework which differentiates colonization and persistence at two spatial scales: across fires and within fires.
- We found strong effects of fire characteristics on dynamic rates, with colonization and persistence declining across both spatial scales with increasing years since fire. Additionally, at sites within fires, colonization decreased with fire size and increased with fire severity and for fires with later ignition dates.
- Our results support the notion that different aspects of a species’ environment are important for population processes at different spatial scales. As habitat quality is ephemeral for any given postfire area, our results illustrate the importance of time since fire in structuring occupancy at the fire level, with other characteristics of fires playing larger roles in determining abundance within individual fires. Our results contribute to the broader understanding of how variation in fire characteristics influences the colonization and persistence of species using ephemeral habitats, which is necessary for conserving and promoting postfire biodiversity in the context of rapidly shifting fire regimes.
- You may send email to email@example.com to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationTingley, Morgan W.; Stillman, Andrew N.; Wilkerson, Robert L.; Howell, Christine A.; Sawyer, Sarah C.; Siegel, Rodney B. 2018. Cross-scale occupancy dynamics of a postfire specialist in response to variation across a fire regime. Journal of Animal Ecology. 209: 333. https://doi.org/10.1111/1365-2656.12851.
Keywordsblack‐backed woodpecker, colonization, dynamic occupancy model, multiscale analysis, persistence, Picoides arcticus, wildfire
- Breed locally, disperse globally: Fine-scale genetic structure despite landscape-scale panmixia in a fire-specialist
- The persistence of Black-backed Woodpeckers following delayed salvage logging in the Sierra Nevada
- Influence of postfire salvage logging on black-backed woodpecker nest-site selection and nest survival
XML: View XML