气候变化领域集成服务门户(CCPortal): Experimental evidence indicates variable responses to forest disturbance and thermal refugia by two plethodontid salamanders

CCPortal

DOI	10.1016/j.foreco.2020.118045
	Experimental evidence indicates variable responses to forest disturbance and thermal refugia by two plethodontid salamanders
	Garcia T.S.; Johnson J.; Jones J.; Kroll A.J.
发表日期	2020
ISSN	0378-1127
卷号	464
英文摘要	Understanding how natural and anthropogenic disturbances affect sensitive species is critical to support conservation programs as land use activities and climatic conditions change. Forest management provides a range of ecosystem services to expanding human populations including production of substantial amounts of woody biomass, thereby reducing area under management and increasing opportunity for conservation designations. However, relatively little experimental information is available to describe how manipulating habitat at multiple scales may affect spatial and temporal variation in populations of climate-sensitive forest taxa. We conducted a Before-After Control-Impact experiment over seven years to evaluate responses of two species of Plethodontid salamanders in operational treatment (harvest, replanting, and herbicide application) and control units, Oregon, USA. In addition, we capitalized on existing variation in downed wood size and accounted for potential behavioral responses to evaluate the thermal refugia hypothesis. For Oregon slender salamanders (Batrachoseps wrighti), mean plot-level occupancy (90% CRI) was increased an estimated 11% (1.11; 0.62–2.1) and estimated mean abundance reduced 16% (0.84; 0.54–1.4) post-harvest. For Ensatina (Ensatina eschscholtzii), mean occupancy was reduced an estimated 80% (0.20; 0.08–0.47) and estimated mean abundance reduced 63% (0.37; 0.22–0.65) post-harvest. We found strong evidence of positive associations for both species with downed wood amount. As predicted, we found ambient temperatures to be higher in harvest than control units. Also, internal downed wood temperatures were warmer in harvested units, suggesting these structures may not have provided adequate thermal refugia. Application of an experimental framework provided evidence about both stand and structure level responses to active management. Habitat structures did not appear to buffer against substantial variation in local climate but evidence was equivocal about importance of these structures to population retention. Monitoring of recruitment and retention of downed wood through subsequent rotations can provide critical information to reduce trade-offs between wood production and conservation of climate sensitive taxa. © 2020 Elsevier B.V.
关键词	Conservation Economic and social effects Ecosystems Harvesting Land use Wood Abundance Coarse woody debris Habitat quality Hierarchical Bayes Occupancy Plethodontid salamanders Thermal refugia Forestry abundance adaptive management amphibian anthropogenic effect climate change climate conditions conservation status disturbance forest ecosystem temporal variation trade-off Conservation Ecosystems Forestry Harvesting Land Use Wood Oregon United States Batrachoseps wrightorum Ensatina Ensatina eschscholtzii Plethodontidae Salamandroidea
语种	英语
来源机构	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132874
推荐引用方式 GB/T 7714	Garcia T.S.,Johnson J.,Jones J.,et al. Experimental evidence indicates variable responses to forest disturbance and thermal refugia by two plethodontid salamanders[J]. Forest Ecology and Management,2020,464.
APA	Garcia T.S.,Johnson J.,Jones J.,&Kroll A.J..(2020).Experimental evidence indicates variable responses to forest disturbance and thermal refugia by two plethodontid salamanders.,464.
MLA	Garcia T.S.,et al."Experimental evidence indicates variable responses to forest disturbance and thermal refugia by two plethodontid salamanders".464(2020).