globalchange  > 气候变化与战略
DOI: 10.1002/ecy.2571
WOS记录号: WOS:000457618800003
论文题名:
Post-fire forest regeneration shows limited climate tracking and potential for drought-induced type conversion
作者: Young, Derek J. N.1; Werner, Chhaya M.1; Welch, Kevin R.1; Young, Truman P.1; Safford, Hugh D.2,3; Latimer, Andrew M.1
通讯作者: Young, Derek J. N.
刊名: ECOLOGY
ISSN: 0012-9658
EISSN: 1939-9170
出版年: 2019
卷: 100, 期:2
语种: 英语
英文关键词: chaparral ; climate change ; fire ; forest ; recruitment ; regeneration ; shrub ; tree ; type conversion
WOS关键词: MIXED-CONIFER FOREST ; NORTHERN SIERRA-NEVADA ; STAND-REPLACING FIRE ; SUB-ALPINE FORESTS ; CASCADE RANGE ; WHITE FIR ; TREE ; CALIFORNIA ; MIGRATION ; WILDFIRE
WOS学科分类: Ecology
WOS研究方向: Environmental Sciences & Ecology
英文摘要:

Disturbance such as wildfire may create opportunities for plant communities to reorganize in response to climate change. The interaction between climate change and disturbance may be particularly important in forests, where many of the foundational plant species (trees) are long-lived and where poor initial tree establishment can result in conversion to shrub- or graminoid-dominated systems. The response of post-disturbance vegetation establishment to post-disturbance weather conditions, particularly to extreme weather, could therefore provide useful information about how forest communities will respond to climate change. We examined the effect of post-fire weather conditions on post-fire tree, shrub, and graminoid recruitment in fire-adapted forests in northern California, USA, by surveying regenerating vegetation in severely burned areas 4-5 yr after 14 different wildfires that burned between 2004 and 2012. This time period (2004-2016) encompassed a wide range of post-fire weather conditions, including a period of extreme drought. For the most common tree species, we observed little evidence of disturbance-mediated community reorganization or range shifts but instead either (1) low sensitivity of recruitment to post-fire weather or (2) weak but widespread decreases in recruitment under unusually dry post-fire conditions, depending on the species. The occurrence of a single strong drought year following fire was more important than a series of moderately dry years in explaining tree recruitment declines. Overall, however, post-fire tree recruitment patterns were explained more strongly by long-term climate and topography and local adult tree species abundance than by post-fire weather conditions. This observation suggests that surviving adult trees can contribute to a "biological inertia" that restricts the extent to which tree community composition will track changes in climate through post-disturbance recruitment. In contrast to our observations in trees, we observed substantial increases in shrub and graminoid establishment under post-fire drought, suggesting that shifts in dominance between functional groups may become more likely in a future with more frequent and intense drought.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/129475
Appears in Collections:气候变化与战略

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作者单位: 1.Univ Calif Davis, Dept Plant Sci, Davis, CA 95616 USA
2.Univ Calif Davis, Dept Environm Sci & Policy, Davis, CA 95616 USA
3.ARS, USDA, Vallejo, CA 94592 USA

Recommended Citation:
Young, Derek J. N.,Werner, Chhaya M.,Welch, Kevin R.,et al. Post-fire forest regeneration shows limited climate tracking and potential for drought-induced type conversion[J]. ECOLOGY,2019-01-01,100(2)
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