DOI: 10.1016/j.foreco.2016.10.058
Scopus记录号: 2-s2.0-84995376567
论文题名: High resistance to managed and natural forest fire in a rare rock-outcrop specialist herb (Boechera constancei, Brassicaceae)
作者: Case E.J. ; Harrison S.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2017
卷: 384 起始页码: 262
结束页码: 267
语种: 英语
英文关键词: Demographic analysis
; Fire
; Rock-outcrop specialist
; Serpentine
Scopus关键词: Deforestation
; Ecology
; Fires
; Forestry
; Plants (botany)
; Population dynamics
; Population statistics
; Rocks
; Serpentine
; Silicate minerals
; Slow light
; Demographic analysis
; Demographic transition
; Elasticity analysis
; Light availability
; Naturally occurring
; Population growth
; Population growth rates
; Sierra Nevada , California
; Fire resistance
; coniferous forest
; covariance analysis
; demographic transition
; ecosystem resilience
; fecundity
; forest fire
; herb
; leaf litter
; montane forest
; outcrop
; population growth
; prescribed burning
; rare species
; serpentine
; specialist
; understory
; California
; Sierra Nevada [California]
; United States
; Boechera constancei
; Brassicaceae
; Coniferophyta
英文摘要: Fire may increase the abundance of many understory plants in forested ecosystems, such as gap-dependent herbs that respond quickly to increased light availability. Fire may or may not benefit some rarer understory herbs, such as stress-tolerant species specializing on rock outcrops. The latter species may benefit less from post-fire increases in light, and their slow-growing life histories might impair their abilities to survive, recover, and/or increase their rates of growth and reproduction following fires. We examined the impacts of prescribed and natural fire on Boechera constancei (Brassicaceae), a rare herb growing on and around outcrops of infertile serpentine rock in upper montane conifer forests of the northern Sierra Nevada, California. We analyzed demographic transition rates of marked plants in response to experimental burns in winter 2012 and a subsequent lightning-caused fire in summer 2012. We measured leaf litter as a covariate, expecting that fire effects on B. constancei demography might be stronger in sites with more litter. Prescribed fire marginally decreased the fecundity of large individuals, but elasticity analyses found these rates to have no effect on estimated population growth, while the naturally occurring fire had no significant effects on demography. Leaf litter was not significant as a covariate in any analyses. Estimated population growth rates were thus unaffected by either prescribed or natural fire. Our results are consistent with the hypothesis that rock outcrop specialists are relatively insensitive to disturbance, and we suggest that such species may often have little bearing on the ecological costs and benefits of fire in forested systems. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/64563
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Environmental Science & Policy, UC Davis, Davis, CA, United States
Recommended Citation:
Case E.J.,Harrison S.. High resistance to managed and natural forest fire in a rare rock-outcrop specialist herb (Boechera constancei, Brassicaceae)[J]. Forest Ecology and Management,2017-01-01,384