Assessment of White-tailed Deer (Odocoileus Virginianus Zimmerman) Density and Browse Damage at University of Wisconsin-Milwaukee Field Station PDF Download
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Author: Heather L. O'Brien
Publisher:
ISBN:
Category : Deer populations
Languages : en
Pages : 134
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Book Description
Author: Heather L. O'Brien
Publisher:
ISBN:
Category : Deer populations
Languages : en
Pages : 134
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Book Description
Author: Jonathan E. Hoeldtke
Publisher:
ISBN:
Category : Cervidae
Languages : en
Pages : 172
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Author: Katie L. Frerker
Publisher:
ISBN:
Category :
Languages : en
Pages : 103
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Author: Curtis C. Rollman
Publisher:
ISBN:
Category : Snow ecology
Languages : en
Pages : 230
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Book Description
Abstract: Many factors influence woody seedling regeneration in north temperate forest ecosystems. One important factor is snow depth, which may in turn interact with herbivory by white-tailed deer (Odocoileus virginianus). In this study we measured variation in snow depth at a northern Wisconsin hardwood forest over two winter seasons, 2012-2013 and 2013-2014. Snow measurements were taken approximately bi- weekly at 60 locations in the 25 hectare Wabikon Forest Dynamics Plot (WFDP) near Crandon, WI, USA. White-tailed deer herbivory was assessed at 275 2x1 m subplots within the WFDP during summer 2013. Our objectives were to identify biotic and abiotic variables that affected snow depth and to associate snow depth with seedling herbivory and mortality. Results showed that biotic variables had significantly greater impact on snow depth than abiotic variables such as slope, elevation, and aspect. Seedling herbivory and mortality during these two years were unrelated to local variations in snow depth. Deer were virtually absent from most of the forest plot during winter months. Both field seasons experienced above average snow levels, so this finding might not apply during all years. Nevertheless, our results shed important light on the dynamics of snow accumulation and melting in northern hardwood forests and suggest that snow inhibits deer browsing during winter. The effects of snow cover on deer browsing are especially important in light of predicted climate change, which may lead to reduced snow cover and therefore increased herbivory of seedlings.
Author: Purdue University. Agricultural Experiment Station
Publisher:
ISBN:
Category : White-tailed deer
Languages : en
Pages : 11
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Author: Frederick Franklin Gilbert
Publisher:
ISBN:
Category :
Languages : en
Pages : 68
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Author: Larry D. Harris
Publisher: University of Chicago Press
ISBN: 9780226317649
Category : Nature
Languages : en
Pages : 234
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Book Description
In this poineering application of island biogeography theory, Harris presents an alternative to current practices of timber harvesting. "Harris pulls together many threads of biological thinking about islands and their effect on plant and animal survival and evolution. He weaves these threads into a model for managing forest lands in a manner that might serve both our short-term economic and social needs as well as what some people feel is our ancient charge to be steward of all parts of creation."—American Forests Winner of the 1986 Wildlife Society Publication Award
Author: John H. Schulz
Publisher:
ISBN:
Category : White-tailed deer
Languages : en
Pages : 112
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Book Description
Author: Greg Colligan
Publisher: ProQuest
ISBN: 9780549387695
Category : Browsing (Animal behavior)
Languages : en
Pages :
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Book Description
Deer damage to soybean crops is a concern for soybean producers on the Delmarva Peninsula. Although researchers have documented decreases in the intensity of deer browse on soybean plants as the growing season progresses, an understanding of the mechanisms driving the decrease in deer browse is necessary for reduction and mitigation of deer damage to soybean crops. I tested 4 hypotheses to determine why deer browse rates decreases 3 weeks after plant emergence: plant phenology affects plant palatability, diet change occurs, deer damage induces a plant response making soybean leaves less palatable, and deer consume fewer leaves but the same amount of leaf biomass as the season progresses. I recorded deer browse in double and single crop soybean fields in Little Creek, Delaware during the 2005-2006 growing seasons. To test if plant phenology affected deer browse, I conducted a forage analysis of soybean leaves at different growth stages. Although forage quality components were variable across the growing season, white-tailed deer dietary requirements were met or exceeded in all cases expect one. I compared deer diet composition using microhistological analyses across the early soybean growing season. By late-May, crops constituted>76% of the items documented in deer diets. The proportion of soybeans in the diet increased from 13% to 37% from late-May to early-July. I tested for an induced plant response by comparing the browse rates of plots that were protected from deer browsing until 4 weeks after plant emergence to plots that received no protection and were browsed sometime in during the 1 st 4 weeks. Although I documented greater browse rates in the protected plots, I also documented that protected plots had taller plants suggesting that deer may have been attracted to the taller plants. The amount of soybean leaf biomass deer were consuming across the growing season was variable but did not decrease from the early to late growth stages of soybeans. Decreasing trends in deer browse, during the early part of the growing season, as reported by other authors were likely the result of how other authors determined browse rates. My research indicates that deer browse does not decrease 3 weeks after plant emergence. When browse rates are standardized by using consumed biomass per week, deer browse on soybean plants is continuous across the growing season. If deer continue to consume leaf biomass at a relatively constant rate as the plants grow more leaves, the impact on plant and the visibility of deer browsing to the agricultural producers will decrease across the season.
Author: James L Chamberlain
Publisher: Forest Service
ISBN: 9780160945885
Category : Nature
Languages : en
Pages : 280
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Book Description
This Non-timber Forest Products' assessment serves as a baseline science synthesis and provides information for managing non-timber forest resources in the United States. This report provides technical input to the 2017 National Climate Assessment and closely follows the Intergovernmental Panel on Climate Change (IPCC) process. You will find an overview of the findings and interrelated discussions covering aspects of biophysical, social, cultural, economic, and policy dimensions of non-timber forest products and the implications of the effects of climatic variabilities and change for them. Appendix information summarizes non-timber forest products relative to geographic regions across the country. Related products: Other products produced by the U.S. Forest Service (Department of Agriculture/USDA) can be found here: https://bookstore.gpo.gov/agency/us-forest-service Find more Federal documents relating to Climate & Weather resources here: https://bookstore.gpo.gov/catalog/weather-climate
