Abstract
Plants cut at different times produce resprouts that vary in their nutritional value relative to when they are cut. To determine how vegetation management in transportation (road and rail) corridors at different times of the year could influence browse quality in the years following cutting, and how this could potentially influence encounters between herbivores and vehicles, we undertook a 3-year study. In 2001, at a wildlife viewing area near Prince George, British Columbia, Canada, we established a control area and treatment areas where shrubs and trees that are used as food by moose (Alces alces) were cut at the beginning of June, July, August, September, and October. In the fall, moose were most often observed browsing the resprouts of plants cut in August (years 1 and 2 post-treatment) and September (year 3). Cumulative winter track counts were highest in the uncut control area in the years following cutting. Spring pellet counts revealed that most pellets were deposited in the uncut (years 1 and 2) and August-cut (year 3) areas during winter. With the exception of the first year after cutting, browse removal by moose was highest for plants cut later in the growing season. Overall, our findings suggest that following cutting, plants cut later in the year are selected more often by moose relative to those cut earlier. To reduce browse use of corridor vegetation in areas where concerns for moose-vehicle collisions exist, we recommend that vegetation maintenance activities be conducted in the early summer months of June and July.
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Acknowledgments
We would like to thank K. Litwinow and the many research assistants and student volunteers who worked tirelessly to collect field data. Major funding for this project was provided by the Insurance Corporation of British Columbia, British Columbia Hydro and Power Authority, British Columbia Rail and the University of Northern British Columbia. Brownridge and Company Insurance Services, Sussex Insurance Agency and Nauroth & Associates Insurance Brokers also provided financial support. O. Hjeljord, G. Hesse and four anonymous reviewers provided constructive and welcomed feedback on an earlier draft of this manuscript.
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Rea, R.V., Child, K.N., Spata, D.P. et al. Road and Rail Side Vegetation Management Implications of Habitat Use by Moose Relative to Brush Cutting Season. Environmental Management 46, 101–109 (2010). https://doi.org/10.1007/s00267-010-9502-6
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DOI: https://doi.org/10.1007/s00267-010-9502-6