You are here: Home
/ Publication Information
Title: Mismatch between herbivore behavior and demographics contributes to scale-dependence of host susceptibility in two pine species
Author: Ylioja, Tiina; Slone, Daniel H.; Ayres, Matthew P.;
Source: Forest Science 51(6) 522-531
Publication Series: Miscellaneous Publication
Description: The impacts on forests of tree-killing bark beetles can depend on the species composition of potential host trees. Host susceptibility might be an intrinsic property of tree species, or it might depend on spatial patterning of alternative host species. We compared the susceptibility of loblolly pine (Pinus taeda) and Virginia pine (P. virginiana) to southern pine beetle (Dendroctonus frontalis) at two hierarchical levels of geographic scale: within beetle infestations in heterospecific stands (extent ranging from 0.28 to 0.65 ha), and across a forest landscape (extent 72,500 ha) that was dominated by monospecific stands. In the former, beetles preferentially attacked Virginia pine (tree mortality 65–100% in Virginia pine versus 0–66% in loblolly pine), but in the latter, loblolly stands were more susceptible than Virginia stands. This hierarchical transition in host susceptibility was predicted from knowledge of (1) a behavioral preference of beetles for attacking loblolly versus Virginia pine, (2) a negative correlation between preference and performance, and (3) a mismatch in the domain of scale between demographics and host selection by individuals. There is value for forest management in understanding the processes that can produce hierarchical transitions in ecological patterns.
Keywords: Spatial scale, hierarchial transition, disturbance, scolytinae, Pinus
- 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.
- 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.)
XML: View XML
Ylioja, Tiina; Slone, Daniel H.; Ayres, Matthew P. 2005. Mismatch between herbivore behavior and demographics contributes to scale-dependence of host susceptibility in two pine species. Forest Science 51(6) 522-531
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility