| DOI: | 10.1016/j.foreco.2016.03.032
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| Scopus记录号: | 2-s2.0-84961822804
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| 论文题名: | Wildlife habitat enhancements for grizzly bears: Survival rates of planted fruiting shrubs in forest harvests |
| 作者: | Braid A.C.R.; Manzer D.; Nielsen S.E.
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| 刊名: | Forest Ecology and Management
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| ISSN: | 0378-1127
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| 出版年: | 2016
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| 卷: | 369 | | 起始页码: | 144
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| 结束页码: | 154
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| 语种: | 英语
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| 英文关键词: | Buffaloberry
; Containerized shrub seedlings
; Cut blocks
; Huckleberry
; Saskatoon
; Wildlife food plots
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| Scopus关键词: | Animals
; Containers
; Ecosystems
; Food supply
; Forestry
; Harvesting
; Nutrients
; Buffaloberry
; Containerized shrub seedlings
; Cut blocks
; Huckleberry
; Saskatoon
; Wildlife food plot
; Seed
; arable land
; bear
; competition (ecology)
; environmental factor
; food supply
; foraging behavior
; habitat availability
; habitat conservation
; harvesting
; seedling establishment
; shrub
; soil amendment
; survival
; ungulate
; wildlife management
; Canada
; Saskatchewan
; Saskatoon
; Amelanchier alnifolia
; Poaceae
; Shepherdia
; Shepherdia canadensis
; Ungulata
; Ursus arctos
; Vaccinium membranaceum
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| 英文摘要: | Productive grizzly bear foraging habitats are lost as the prevalence of natural forest openings declines. We assessed the effectiveness of using wildlife habitat enhancements to increase food supply for grizzly bears in recent forest harvests by conducting planting trials of containerized shrub seedlings for three important late-season grizzly bear foods (fruiting shrubs): Shepherdia canadensis (Canada buffaloberry), Vaccinium membranaceum (mountain huckleberry), and Amelanchier alnifolia (saskatoon). We monitored seedling survival over two growing seasons and considered the effects of soil nutrient amendments, exclosures, initial seedling condition, and environmental factors (elevation and terrain). A. alnifolia had the highest survival rate, although it may not be as effective in the long term due to being preferred ungulate winter browse. Soil nutrient amendments reduced survival rates of all three species, perhaps due to competition with grasses, whereas exclosures increased survival rates. Survival rates across an elevation gradient for S. canadensis and A. alnifolia were inversely related to local occupancy rates, demonstrating that knowledge of their realized niche space is not consistent with early establishment rates of seedlings. As the amount of natural forest openings declines, wildlife habitat enhancements in disturbed sites with open canopies, including forest harvests, have the potential to locally increase late-season food supply for grizzly bears. © 2016 Elsevier B.V. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/64946
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| Appears in Collections: | 影响、适应和脆弱性
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作者单位: | Department of Renewable Resources, University of Alberta, Edmonton, AB, Canada; Alberta Conservation Association, Blairmore, AB, Canada
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| Recommended Citation: | |
Braid A.C.R.,Manzer D.,Nielsen S.E.. Wildlife habitat enhancements for grizzly bears: Survival rates of planted fruiting shrubs in forest harvests[J]. Forest Ecology and Management,2016-01-01,369
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