globalchange  > 全球变化的国际研究计划
DOI: 10.1016/j.foreco.2019.04.047
WOS记录号: WOS:000470946000034
论文题名:
The effects of mountain pine beetle outbreaks on avian communities in lodgepole pine forests across the greater Rocky Mountain region
作者: Janousek, William M.1,2; Hicke, Jeffrey A.3; Meddens, Arjan J. H.4; Dreitz, Victoria J.1,2
通讯作者: Janousek, William M.
刊名: FOREST ECOLOGY AND MANAGEMENT
ISSN: 0378-1127
EISSN: 1872-7042
出版年: 2019
卷: 444, 页码:374-381
语种: 英语
WOS关键词: WESTERN UNITED-STATES ; BIRD COMMUNITIES ; TREE MORTALITY ; CLIMATE-CHANGE ; BARK BEETLES ; INDICATORS ; DENSITY
WOS学科分类: Forestry
WOS研究方向: Forestry
英文摘要:

Disturbance is an integral component of forest ecosystems. Therefore, contemporary changes to the frequency and severity of disturbances in forests may have lasting ecological consequences. In recent decades, widespread mountain pine beetle (MPB; Dendroctonus ponderosae) outbreaks have contributed more to total tree mortality than other disturbances such as wildfire. Past studies have used a broad range of measurements to evaluate the local effects of beetle outbreaks on birds (e.g., dead trees per acre versus percent mortality) and this has led to some challenges and inconsistencies in generalizing results across larger spatial scales. We sought to address these inconsistencies by using a single data source estimating outbreak-related tree mortality across the western United States to better understand the effect of beetle outbreaks on avian communities in lodgepole pine forests. This study uses five years of avian monitoring data (2008-2012) from the Integrated Monitoring in Bird Conservation Regions program, collected across Colorado, Idaho, Montana, and Wyoming. We developed a hierarchical multispecies occupancy model to quantify changes in the forest bird community following beetle outbreaks while accounting for the imperfect detection of species. Mean species richness (N) did not differ between MPB outbreak sites (N = 19.35, 95%CRI = 17.00, 22.01) and sites with no outbreak (N = 20.23, 95%CRI = 16.83, 24.25). Furthermore, we found weak evidence for a community-level response to increasing outbreak severity and time since outbreak, due in part to the variability among species within each of the four nesting guilds analyzed in this study (canopy, cavity, shrub, and ground nesting birds). However, we did find evidence of turnover in community composition with just over 50% of species (28 of 55) having statistically different occurrence rates following MPB outbreaks. Our study underscores the notion that species richness alone does not fully express changes in the forest bird community. Our results also suggest many species, particularly cavity nesters, utilize beetle-killed forests and persist at higher occurrence rates for up to 10 years post-outbreak. This period includes the timeframe when beetle-killed trees are most readily salvageable and emphasizes the need for continued evaluation of snag-retention policies prior to the implementation of post-outbreak management activities.


Citation statistics:
被引频次[WOS]:12   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/143403
Appears in Collections:全球变化的国际研究计划

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作者单位: 1.Univ Montana, Avian Sci Ctr, WA Franke Coll Forestry & Conservat, 32 Campus Dr, Missoula, MT 59812 USA
2.Univ Montana, Wildlife Biol Program, WA Franke Coll Forestry & Conservat, Dept Ecosyst & Conservat Sci, 32 Campus Dr, Missoula, MT 59812 USA
3.Univ Idaho, Dept Geog, 875 Perimeter Dr, Moscow, ID 83844 USA
4.Univ Idaho, Dept Nat Resources & Soc, 875 Perimeter Dr, Moscow, ID 83844 USA

Recommended Citation:
Janousek, William M.,Hicke, Jeffrey A.,Meddens, Arjan J. H.,et al. The effects of mountain pine beetle outbreaks on avian communities in lodgepole pine forests across the greater Rocky Mountain region[J]. FOREST ECOLOGY AND MANAGEMENT,2019-01-01,444:374-381
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