气候变化领域集成服务门户(CCPortal): Cut vs. fire: a comparative study of the temporal effects of timber harvest and wildfire on ecological indicators of the boreal forest

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DOI	10.1007/s10980-024-01882-4
	Cut vs. fire: a comparative study of the temporal effects of timber harvest and wildfire on ecological indicators of the boreal forest
	Best, Ian N.; Brown, Leonie; Elkin, Che; Finnegan, Laura; Mcclelland, Cameron J. R.; Johnson, Chris J.
发表日期	2024
ISSN	0921-2973
EISSN	1572-9761
起始页码	39
结束页码	4
卷号	39 期号:4
英文摘要	Context Large-scale natural disturbances are crucial drivers of ecosystem function and composition for many forested ecosystems. In the last century, the prevalence of anthropogenic disturbances has increased across Canada's boreal forest. Habitat disturbance from timber harvest and wildfire is linked to declines of boreal species, including woodland caribou (Rangifer tarandus caribou). Objectives We tested how disturbances influenced the recovery trajectory of ecological indicators of timber, biodiversity, and wildlife habitat through time following timber harvest and wildfire across the boreal forest of Alberta, Canada. MethodsDuring 2021 and 2022, we collected field data from 251 timber harvested and 264 burned stands (0-40 years since disturbance), as well as 256 older forest stands used by caribou (> 40 years since disturbance). Field data included metrics of stand attributes (e.g., basal area, stems per hectare), coarse woody debris (CWD), and abundance of forage for caribou, moose (Alces americanus), and bears (black bear: Ursus americanus, grizzly bear: Ursus arctos). Results Basal area of trees and stems per hectare recovered more quickly in timber harvest sites when compared to wildfire sites, but as time since disturbance increased there were no differences in these attributes among timber harvest, wildfire, and caribou use sites. CWD was greatest in recently burned sites, but declined over time to be similar in quantity as in harvested stands and older forest stands. Terrestrial lichens, important forage for caribou, were most abundant in the older caribou use sites, whereas forage for moose and bears, including shrubs, was most abundant in younger timber harvest and wildfire sites. Conclusions Our results demonstrate that timber harvesting may result in a quicker development of timber volume when compared to wildfire. However, this anthropogenic disturbance is less advantageous for the development of caribou habitat.
英文关键词	Disturbance; Timber harvest; Wildfire; Forage; Caribou; Coarse woody debris (CWD); Ecological indicator
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Physical Geography ; Geology
WOS类目	Ecology ; Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:001189632500001
来源期刊	LANDSCAPE ECOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304755
作者单位	University of Northern British Columbia
推荐引用方式 GB/T 7714	Best, Ian N.,Brown, Leonie,Elkin, Che,et al. Cut vs. fire: a comparative study of the temporal effects of timber harvest and wildfire on ecological indicators of the boreal forest[J],2024,39(4).
APA	Best, Ian N.,Brown, Leonie,Elkin, Che,Finnegan, Laura,Mcclelland, Cameron J. R.,&Johnson, Chris J..(2024).Cut vs. fire: a comparative study of the temporal effects of timber harvest and wildfire on ecological indicators of the boreal forest.LANDSCAPE ECOLOGY,39(4).
MLA	Best, Ian N.,et al."Cut vs. fire: a comparative study of the temporal effects of timber harvest and wildfire on ecological indicators of the boreal forest".LANDSCAPE ECOLOGY 39.4(2024).