气候变化领域集成服务门户(CCPortal): Green-tree retention and relative habitat use by mule deer (Odocoileus hemionus) 20 years after harvest of Douglas-fir (Pseudotsuga menziesii)

CCPortal

DOI	10.1016/j.foreco.2019.02.008
	Green-tree retention and relative habitat use by mule deer (Odocoileus hemionus) 20 years after harvest of Douglas-fir (Pseudotsuga menziesii) – Lodgepole pine (Pinus contorta) forest
	Sullivan T.P.; Sullivan D.S.
发表日期	2019
ISSN	0378-1127
起始页码	426
结束页码	434
卷号	437
英文摘要	Mule deer (Odocoileus hemionus) are a major mammal species in many interior Douglas-fir (Pseudotsuga menziesii) forest ecosystems in western North America. During winter in areas of relatively high snowpacks, mule deer seem to require older trees with large crowns for snow interception, but these forests are often targeted for harvest. Green-tree retention (GTR) may offer a solution to this conundrum. We tested three hypotheses (H) that, at 20–22 years after harvest, (H 1 ) abundance (e.g., basal area and density of residual trees and understory stand structure) of conifers, (H 2 ) abundance, species richness, and diversity of understory vegetation, and (H 3 ) relative habitat use by mule deer, will decline with lower levels of tree retention. Fecal pellet-groups of deer were counted in summer and winter periods for three years in replicated stands of dispersed retention, aggregated retention, patch-cut, group selection, and uncut forest in mixed Douglas-fir - lodgepole pine (Pinus contorta) forest in southern British Columbia, Canada. Mean basal area, density, and canopy closure of overstory Douglas-fir trees were generally greater in the patch-cut, group selection, and uncut forest sites than dispersed and aggregated retention sites, and hence supported the overstory part of H 1 . Mean density of understory conifers did not support H 1 as the majority of these trees were in the dispersed and aggregated retention stands. There was no difference in mean abundance nor species richness of understory vegetation among treatment sites. Mean species diversity tended to be 1.4–1.8 times higher in the patch-cut and group selection than the other sites, and hence provided weak support for H 2. Patch-cut and group selection sites were dominated by Douglas-fir trees in both the overstory and understory, along with potential forage shrub species, and were used by deer more than the dispersed and aggregated retention stands in both summer and winter. Relative habitat use by deer in uncut forest was greater than the retention stands and generally similar to the patch-cut and group selection sites in both seasons. These results suggest that partial harvesting of these mixed Douglas-fir – lodgepole pine stands across a range of opening sizes (e.g., 0.1 to 2–5 ha) should provide suitable habitat for mule deer over time. © 2019 Elsevier B.V.
英文关键词	Conifers; Douglas-fir; Habitat use; Herbs and shrubs; Mule deer; Pellet-groups; Winter range
语种	英语
scopus关键词	Ecosystems; Harvesting; Mammals; Pelletizing; Vegetation; Conifers; Douglas fir; Habitat use; Herbs and shrubs; Mule deer; Pellet-groups; Winter range; Forestry; abundance; basal area; coniferous forest; coniferous tree; deer; forest ecosystem; group selection; habitat use; herb; seasonal variation; shrub; species richness; understory; winter; Ecosystems; Harvesting; Mammals; Pelleting; Plants; Softwoods; British Columbia; Canada; Abies; Cervidae; Coniferophyta; Mammalia; Odocoileus hemionus; Pinus contorta; Pseudotsuga; Pseudotsuga menziesii
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156128
作者单位	Department of Forest and Conservation Sciences, Faculty of Forestry, University of British Columbia, 2424 Main Mall, Vancouver, BC V6T 1Z4, Canada; Applied Mammal Research Institute, 11010 Mitchell Ave., Summerland, British Columbia V0H 1Z8, Canada
推荐引用方式 GB/T 7714	Sullivan T.P.,Sullivan D.S.. Green-tree retention and relative habitat use by mule deer (Odocoileus hemionus) 20 years after harvest of Douglas-fir (Pseudotsuga menziesii) – Lodgepole pine (Pinus contorta) forest[J],2019,437.
APA	Sullivan T.P.,&Sullivan D.S..(2019).Green-tree retention and relative habitat use by mule deer (Odocoileus hemionus) 20 years after harvest of Douglas-fir (Pseudotsuga menziesii) – Lodgepole pine (Pinus contorta) forest.Forest Ecology and Management,437.
MLA	Sullivan T.P.,et al."Green-tree retention and relative habitat use by mule deer (Odocoileus hemionus) 20 years after harvest of Douglas-fir (Pseudotsuga menziesii) – Lodgepole pine (Pinus contorta) forest".Forest Ecology and Management 437(2019).