Porcupine damage and repellent research in the interior Pacific Northwest

منو

" Porcupine damage and repellent research in the interior Pacific Northwest "
Witmer, Gary W.; Pipas, Michael J.

Document Type	:	AL
Record Number	:	943216
Doc. No	:	LA1vc493x1
Language of Document	:	English
Main Entry	:	Witmer, Gary W.; Pipas, Michael J.
Title & Author	:	Porcupine damage and repellent research in the interior Pacific Northwest [Article]\ Witmer, Gary W.; Pipas, Michael J.
Title of Periodical	:	Proceedings of the Vertebrate Pest Conference
Volume/ Issue Number	:	18
Date	:	1998
Abstract	:	Porcupines (Erethizon dorsatum) rely on trees and shrubs for winter food and can cause serious, localized damage to conifers. Twenty-two percent of ponderosa trees (Pinus ponderosa) examined in southeastern Washington were damaged by porcupines. Most damage involved complete girdling of the mid- to upper boles of the larger trees (12 to 30 cm dbh) in the stand. Preliminary repellent trials with captive porcupines suggested that several materials might reduce tree damage, especially predator-associated odors. Field trials are needed to assess efficacy and duration of protection under ambient winter conditions.