Skip to Main Content
A subcontinental analysis of forest fragmentation effects on insect and disease invasionAuthor(s): Qinfeng Guo; Kurt Riitters; Kevin Potter
Publication Series: Scientific Journal (JRNL)
Station: Southern Research Station
Download Publication (1.0 MB)
DescriptionThe influences of human and physical factors on species invasions have been extensively examined by ecologists across many regions. However, how habitat fragmentation per se may affect forest insect and disease invasion has not been well studied, especially the related patterns over regional or subcontinental scales. Here, using national survey data on forest pest richness and fragmentation data across United States forest ecosystems, we examine how forest fragmentation and edge types (neighboring land cover) may affect pest richness at the county level. Our results show that habitat fragmentation and edge types both affected pest richness. In general, specialist insects and pathogens were more sensitive to fragmentation and edge types than generalists, while pathogens were much less sensitive to fragmentation and edge types than insect pests. Most importantly, the developed land edge type contributed the most to the richness of nonnative insects and diseases, whether measured by the combination of all pest species or by separate guilds or species groups (i.e., generalists vs. specialists, insects vs. pathogens). This observation may largely reflect anthropogenic effects, including propagule pressure associated with human activities. These results shed new insights into the patterns of forest pest invasions, and it may have significant implications for forest restoration and management.
- 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.
CitationGuo, Qinfeng; Riitters, Kurt; Potter, Kevin. 2018. A subcontinental analysis of forest fragmentation effects on insect and disease invasion. Forests. 9(12): 744-. https://doi.org/10.3390/f9120744.
Keywordscross-trophic, edge effects, edge type, landscape matrix, management, neighbor effects, nonnative species, scale
- Invasive plants, insects, and diseases in the forests of the Anthropocene
- Spatial patterns of discovery points and invasion hotspots of non‐native forest pests
- The spread of invasive species and infectious disease as drivers of ecosystem change.
XML: View XML