Summary: Southern pine beetles within stands Ayres et al. 1
A Contribution to:
The Southern Pine Beetle Encyclopedia
Robert N. Coulson and Kier D. Klepzig, editors.
USDA Forest Service, Southern Research Station, in press.
Southern pine beetle ecology: populations within stands.
Matthew P. Ayres1
, Sharon J. Martinson2
, and Nicholas A. Friedenberg3
Department of Biological Sciences, Dartmouth College, Hanover, NH 03755 USA
USDA Forest Service, Pacific Northwest Research Station, 3200 SW Jefferson Way, Corvallis,
OR 97331 USA
Applied Biomathematics, 100 North Country Road, Setauket, NY 11733 USA
Abstract--Populations of southern pine beetle (SPB) are typically substructured into local
aggregations each with tens of thousands of individual beetles. These aggregations, known as
"spots" because of their appearance during aerial surveys, are the basic unit for the monitoring
and management of SPB populations in forested regions. They typically have a maximum