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Forest fragmentation in the Pacific Northwest: quantification and correlations.

Publication ,  Journal Article
Butler, BJ; Swenson, JJ; Alig, RJ
Published in: Forest ecology and management.
February 2004

A forest fragmentation index was produced for western Oregon and western Washington that combined measures of forested area, percentage edge, and interspersion. While natural, human land-cover, and human land-use processes contribute to forest fragmentation in the region, the drivers of these processes are categorically different. Here we examine forest fragmentation caused by human land-use decisions, which accounts for 20% of the total forest edge in the region. Using multiple linear regression, we developed a model with socio-economic and environmental predictor variables that explains 80% of the variance of the forest fragmentation index across the region. Population density, income, and percentage agriculture were all significant and positively correlated with the fragmentation index. Significantly negative correlations were found between the forest fragmentation index and distance to highway, percentage federal land, slope, and a dummy variable indicating land in Oregon. The three components of the fragmentation index were used as predictor variables in separate regression models and yielded results similar to the composite index. Models run separately for western Oregon and western Washington were similar to the regional model except that distance to highway was only significant in the western Oregon model and income was only significant in the western Washington model.

Duke Scholars

Published In

Forest ecology and management.

DOI

ISSN

0378-1127

Publication Date

February 2004

Volume

189

Issue

1-3

Start / End Page

363 / 373

Related Subject Headings

  • Forestry
  • 4102 Ecological applications
  • 3103 Ecology
  • 07 Agricultural and Veterinary Sciences
  • 06 Biological Sciences
  • 05 Environmental Sciences
 

Citation

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ICMJE
MLA
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Butler, B. J., Swenson, J. J., & Alig, R. J. (2004). Forest fragmentation in the Pacific Northwest: quantification and correlations. Forest Ecology and Management., 189(1–3), 363–373. https://doi.org/10.1016/j.foreco.2003.09.013
Butler, B. J., J. J. Swenson, and R. J. Alig. “Forest fragmentation in the Pacific Northwest: quantification and correlations.Forest Ecology and Management. 189, no. 1–3 (February 2004): 363–73. https://doi.org/10.1016/j.foreco.2003.09.013.
Butler BJ, Swenson JJ, Alig RJ. Forest fragmentation in the Pacific Northwest: quantification and correlations. Forest ecology and management. 2004 Feb;189(1–3):363–73.
Butler, B. J., et al. “Forest fragmentation in the Pacific Northwest: quantification and correlations.Forest Ecology and Management., vol. 189, no. 1–3, Feb. 2004, pp. 363–73. Epmc, doi:10.1016/j.foreco.2003.09.013.
Butler BJ, Swenson JJ, Alig RJ. Forest fragmentation in the Pacific Northwest: quantification and correlations. Forest ecology and management. 2004 Feb;189(1–3):363–373.
Journal cover image

Published In

Forest ecology and management.

DOI

ISSN

0378-1127

Publication Date

February 2004

Volume

189

Issue

1-3

Start / End Page

363 / 373

Related Subject Headings

  • Forestry
  • 4102 Ecological applications
  • 3103 Ecology
  • 07 Agricultural and Veterinary Sciences
  • 06 Biological Sciences
  • 05 Environmental Sciences