干旱区生态环境知识资源中心(Arid): Episodic occurrence of favourable weather constrains recovery of a cold desert shrubland after fire

Arid

DOI	10.1111/1365-2664.13911
	Episodic occurrence of favourable weather constrains recovery of a cold desert shrubland after fire
	Urza, Alexandra K.; Weisberg, Peter J.; Board, David; Chambers, Jeanne C.; Kitchen, Stanley G.; Roundy, Bruce A.
通讯作者	Urza, AK (corresponding author), US Forest Serv, USDA, Rocky Mt Res Stn, Reno, NV 89506 USA. ; Urza, AK (corresponding author), Univ Nevada, Ecol Evolut & Conservat Biol Grad Program, Reno, NV 89557 USA.
来源期刊	JOURNAL OF APPLIED ECOLOGY
ISSN	0021-8901
EISSN	1365-2664
出版年	2021
英文摘要	1. Key to the long-term resilience of dryland ecosystems is the recovery of foundation plant species following disturbance. In ecosystems with high interannual weather variability, understanding the influence of short-term environmental conditions on establishment of foundation species is essential for identifying vulnerable landscapes and developing restoration strategies. We asked how annual environmental conditions affect post-fire establishment of Artemisia tridentata, a shrub species that dominates landscapes across much of the western United States, and evaluated the influence of episodic establishment on population recovery. 2. We collected A. tridentata stem samples from 33 plots in 12 prescribed fire sites that burned 8-11 years before sampling. We determined individual establishment years using annual growth rings. We measured seasonal soil environmental conditions at the study sites and asked if these conditions predicted annual establishment density. We then evaluated whether establishment patterns could be predicted by site-level climate or dominant subspecies. Finally, we tested the effect of the magnitude and frequency of post-fire establishment episodes on long-term population recovery. 3. Annual post-fire recruitment of A. tridentata was driven by the episodic availability of spring soil moisture. Annual establishment was highest with wetter spring soils (relative influence [RI] = 19.4%) and later seasonal dry-down (RI = 11.8%) in the year of establishment. Establishment density declined greatly 4 to 5 years after fire (RI = 17.1%). Post-fire establishment patterns were poorly predicted by site-level mean climate (marginal R-2 <= 0.18) and dominant subspecies (marginal R-2 <= 0.43). 4. Population recovery reflected the magnitude, but not the frequency, of early post-fire establishment pulses. Post-fire A. tridentata density and cover (measured 8-11 years after fire) were more strongly related to the magnitude of the largest establishment pulse than to establishment frequency, suggesting that population recovery may occur with a single favourable establishment year. 5. Synthesis and applications. This study demonstrates the importance of episodic periods of favourable weather for long-term plant population recovery following disturbance. Management strategies that increase opportunities for seed availability to coincide with favourable weather conditions, such as retaining unburned patches or repeated seeding treatments, can improve restoration outcomes in high-priority areas.
英文关键词	annual weather conditions big sagebrush ecological restoration favourable weather plant establishment post-fire recovery prescribed fire resource pulses
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000658804300001
WOS关键词	GREAT-BASIN ; PLANT-COMMUNITIES ; CLIMATE-CHANGE ; GERMINATION PREDICTION ; POSTFIRE REGENERATION ; ARTEMISIA-TRIDENTATA ; SPECIES INTERACTIONS ; DRYLAND ECOSYSTEMS ; RESOURCE PULSES ; RESTORATION
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352301
作者单位	[Urza, Alexandra K.; Board, David; Chambers, Jeanne C.] US Forest Serv, USDA, Rocky Mt Res Stn, Reno, NV 89506 USA; [Urza, Alexandra K.; Weisberg, Peter J.] Univ Nevada, Ecol Evolut & Conservat Biol Grad Program, Reno, NV 89557 USA; [Weisberg, Peter J.] Univ Nevada, Dept Nat Resources & Environm Sci, Reno, NV 89557 USA; [Kitchen, Stanley G.] US Forest Serv, USDA, Rocky Mt Res Stn, Provo, UT USA; [Roundy, Bruce A.] Brigham Young Univ, Dept Plant & Wildlife Sci, Provo, UT 84602 USA
推荐引用方式 GB/T 7714	Urza, Alexandra K.,Weisberg, Peter J.,Board, David,et al. Episodic occurrence of favourable weather constrains recovery of a cold desert shrubland after fire[J],2021.
APA	Urza, Alexandra K.,Weisberg, Peter J.,Board, David,Chambers, Jeanne C.,Kitchen, Stanley G.,&Roundy, Bruce A..(2021).Episodic occurrence of favourable weather constrains recovery of a cold desert shrubland after fire.JOURNAL OF APPLIED ECOLOGY.
MLA	Urza, Alexandra K.,et al."Episodic occurrence of favourable weather constrains recovery of a cold desert shrubland after fire".JOURNAL OF APPLIED ECOLOGY (2021).