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Rights Statements InC/1.0 , Open Access
Rights Statements InC/1.0 , Open Access
Journal article
Long-term influence of glyphosate herbicide on demography and diversity of small mammal communities in coastal coniferous forest
Northwest science., Vol.71(1), pp.6-17
1997
Handle:
https://hdl.handle.net/2376/1260
Abstract
This study tested the hypothesis that (1) abundance and related demographic parameters of small mammal populations, and (2) species diversity of small mammal communities, would be adversely affected in herbicide-treated habitats at 9 and 11 years after treatment in coastal coniferous forest. Study areas were located in south-coastal British Columbia, Canada, in the Coastal Western Hemlock (CWH-dm) biogeoclimatic zone where small mammal populations were intensively sampled on paired control and treatment sites. Average density of deer mice (Peromyscus maniculatus) during summer periods (1981-1990) was lower in the treatment than control in the immediate post-treatment (PT) period (1982), with comparable numbers in 1983, 1985, and 1990. At the 11-year PT area, deer mouse numbers were similar on control and treatment sites in 1978, 1979, 1980, and 1990. Average density of Oregon voles (Microtus oregoni) was higher on treatment than control sites at 9 and 11 years after treatment. Townsend chipmunks (Eutamias townsendii) tended to be less abundant on the treatment than control site 9 years PT but were essentially absent from the 11-year PT study area. There was no difference in average density of shrew (Sorex spp.) populations between control and treatment sites at either study area. It is likely that post-harvest successional change has more of an impact on small mammal abundance than change induced by a herbicide treatment. Our results suggest that glyphosate herbicide did not adversely affect reproduction, survival, or growth of deer mice and Oregon voles in coastal forest a decade after application. Species richness and diversity of small mammal communities changed little over the decade following treatment. This study is the first investigation on the effects of forest herbicide use on demography and diversity of small mammal communities that extends to a decade
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Details
- Title
- Long-term influence of glyphosate herbicide on demography and diversity of small mammal communities in coastal coniferous forest
- Creators
- Thomas P. Sullivan (Author)Druscilla S. Sullivan (Author)R. A. Lautenschlager (Author)Robert G. Wagner (Author)
- Publication Details
- Northwest science., Vol.71(1), pp.6-17
- Academic Unit
- Northwest Science
- Publisher
- WSU Press
- Identifiers
- 99900502739801842
- Copyright
- In copyright ; openAccess ; http://rightsstatements.org/vocab/InC/1.0/ ; http://purl.org/eprint/accessRights/OpenAccess
- Language
- English
- Resource Type
- Journal article