DOI: 10.1016/j.foreco.2017.06.017
Scopus记录号: 2-s2.0-85020741527
论文题名: Response of bird community structure to habitat management in piñon-juniper woodland-sagebrush ecotones
作者: Knick S.T. ; Hanser S.E. ; Grace J.B. ; Hollenbeck J.P. ; Leu M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 400 起始页码: 256
结束页码: 268
语种: 英语
英文关键词: Artemisia
; Disturbance
; Juniper
; Juniperus
; Pinus
; Piñon pine
; Sagebrush
; Structural equation modeling
; Treatment effects
Scopus关键词: Cutting
; Ecosystems
; Surveys
; Artemisia
; Disturbance
; Juniper
; Juniperus
; Pinus
; Sagebrush
; Structural equation modeling
; Treatment effects
; Birds
; bird
; climate change
; community structure
; coniferous tree
; disturbance
; habitat management
; numerical model
; parameterization
; prescribed burning
; shrub
; shrubland
; woodland
; United States
; Artemisia
; Artemisia tridentata
; Aves
; Juniperus
英文摘要: Piñon (Pinus spp.) and juniper (Juniperus spp.) woodlands have been expanding their range across the intermountain western United States into landscapes dominated by sagebrush (Artemisia spp.) shrublands. Management actions using prescribed fire and mechanical cutting to reduce woodland cover and control expansion provided opportunities to understand how environmental structure and changes due to these treatments influence bird communities in piñon-juniper systems. We surveyed 43 species of birds and measured vegetation for 1–3 years prior to treatment and 6–7 years post-treatment at 13 locations across Oregon, California, Idaho, Nevada, and Utah. We used structural equation modeling to develop and statistically test our conceptual model that the current bird assembly at a site is structured primarily by the previous bird community with additional drivers from current and surrounding habitat conditions as well as external regional bird dynamics. Treatment reduced woodland cover by >5% at 80 of 378 survey sites. However, habitat change achieved by treatment was highly variable because actual disturbance differed widely in extent and intensity. Biological inertia in the bird community was the strongest single driver; 72% of the variation in the bird assemblage was explained by the community that existed seven years earlier. Greater net reduction in woodlands resulted in slight shifts in the bird community to one having ecotone or shrubland affinities. However, the overall influence of woodland changes from treatment were relatively small and were buffered by other extrinsic factors. Regional bird dynamics did not significantly influence the structure of local bird communities at our sites. Our results suggest that bird communities in piñon-juniper woodlands can be highly stable when management treatments are conducted in areas with more advanced woodland development and at the level of disturbance measured in our study. © 2017 The Authors Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64237
Appears in Collections: 影响、适应和脆弱性
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作者单位: U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center, 970 Lusk Street, Boise, ID, United States; U.S. Geological Survey, Wetland and Aquatic Research Center, 700 Cajundome Boulevard, Lafayette, LA, United States; U.S. Geological Survey, Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR, United States
Recommended Citation:
Knick S.T.,Hanser S.E.,Grace J.B.,et al. Response of bird community structure to habitat management in piñon-juniper woodland-sagebrush ecotones[J]. Forest Ecology and Management,2017-01-01,400