气候变化领域集成服务门户(CCPortal): Shifting fire regimes cause continent- wide transformation of threatened species habitat

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DOI	10.1073/pnas.2316417121
	Shifting fire regimes cause continent- wide transformation of threatened species habitat
	Doherty, Tim S.; Macdonald, Kristina J.; Nimmo, Dale G.; Santos, Julianna L.; Geary, William L.; Bowman, David
发表日期	2024
ISSN	0027-8424
EISSN	1091-6490
起始页码	121
结束页码	18
卷号	121 期号:18
英文摘要	Human actions are causing widespread increases in fire size, frequency, and severity in diverse ecosystems globally. This alteration of fire regimes is considered a threat to numerous animal species, but empirical evidence of how fire regimes are shifting within both threatened species' ranges and protected areas is scarce, particularly at large spatial and temporal scales. We used a big data approach to quantify multidecadal changes in fire regimes in southern Australia from 1980 to 2021, spanning 415 reserves (21.5 million ha) and 129 threatened species' ranges including birds, mammals, reptiles, invertebrates, and frogs. Most reserves and threatened species' ranges within the region have experienced declines in unburnt vegetation (>= 30 y without fire), increases in recently burnt vegetation (<= 5 y since fire), and increases in fire frequency. The mean percentage of unburnt vegetation within reserves declined from 61 to 36% (1980 to 2021), whereas the mean percentage of recently burnt vegetation increased from 20 to 35%, and mean fire frequency increased by 32%, with the latter two trends primarily driven by the record- breaking 2019 to 2020 fire season. The strongest changes occurred for high- elevation threatened species, and reserves of high elevation, high productivity, and strong rainfall decline, particularly in the southeast of the continent. Our results provide evidence for the widely held but poorly tested assumption that threatened species are experiencing widespread declines in unburnt habitat and increases in fire frequency. This underscores the imperative for developing management strategies that conserve fire- threatened species in an increasingly fiery future.
英文关键词	climate change; long unburnt; megafire; old- growth forest; wildfire
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001228441800003
来源期刊	PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/298670
作者单位	University of Sydney; Deakin University; Charles Sturt University; Charles Sturt University; University of Melbourne
推荐引用方式 GB/T 7714	Doherty, Tim S.,Macdonald, Kristina J.,Nimmo, Dale G.,et al. Shifting fire regimes cause continent- wide transformation of threatened species habitat[J],2024,121(18).
APA	Doherty, Tim S.,Macdonald, Kristina J.,Nimmo, Dale G.,Santos, Julianna L.,Geary, William L.,&Bowman, David.(2024).Shifting fire regimes cause continent- wide transformation of threatened species habitat.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,121(18).
MLA	Doherty, Tim S.,et al."Shifting fire regimes cause continent- wide transformation of threatened species habitat".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 121.18(2024).