globalchange  > 过去全球变化的重建
DOI: 10.1007/s11258-019-00939-8
WOS记录号: WOS:000470753000005
论文题名:
Postfire population dynamics of a fire-dependent cypress
作者: Brennan, Teresa J.1; Keeley, Jon E.1,2
通讯作者: Brennan, Teresa J.
刊名: PLANT ECOLOGY
ISSN: 1385-0237
EISSN: 1573-5052
出版年: 2019
卷: 220, 期:6, 页码:605-617
语种: 英语
英文关键词: Hesperocyparisforbesii ; Tecate cypress ; Closed-cone cypress ; Fire frequency ; Immaturity risk ; Population dynamics
WOS关键词: CALIFORNIA ; HESPEROCYPARIS ; ASSOCIATION ; MORTALITY ; VIABILITY ; WILDFIRES ; RESPONSES ; INTERVAL ; ECOLOGY ; RARE
WOS学科分类: Plant Sciences ; Ecology ; Forestry
WOS研究方向: Plant Sciences ; Environmental Sciences & Ecology ; Forestry
英文摘要:

Tecate cypress (Hesperocyparis forbesii) is a rare species restricted to four metapopulations in southern California, USA and a few isolated populations in northern Baja California, Mexico. It is a closed-cone, fire-dependent tree of conservation concern due to an increase in human-caused wildfires that have shortened the interval between fires in many of their populations. In 2003, the Mine/Otay Fire burned 70% of the Tecate cypress on Otay Mountain in San Diego County, California providing an opportunity to evaluate the immaturity risk of this species and to examine its recruitment, survivorship, and reproductive maturity over a 14-year period from 2004 to 2017. Sixteen sites were established in burned stands of Tecate cypress with prefire ages that ranged from 7 to 53years old. After 14years, the overall density of Tecate cypress was still higher than before the fire, however, the areal extent of the species decreased due to the loss of locations where either there was low cone production or fire intensity was too high. The immaturity risk for this species, while a function of prefire stand age, is confounded by other factors including the reproductive capacities of trees based on their density and size and the climatic variables affecting their growth over time. The future management of Tecate cypress and other fire-dependent species requires a knowledge of all factors impacting their immaturity risk, as well as an understanding of the potential fire-climate interactions that may impact their persistence in a future of climate change and altered fire regimes.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/139523
Appears in Collections:过去全球变化的重建

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作者单位: 1.US Geol Survey, Western Ecol Res Ctr, Sequoia Kings Canyon Field Stn, 47050 Gen Highway, Three Rivers, CA 93271 USA
2.Univ Calif, Dept Ecol & Evolutionary Biol, 612 Charles E Young Dr, South Los Angeles, CA 90095 USA

Recommended Citation:
Brennan, Teresa J.,Keeley, Jon E.. Postfire population dynamics of a fire-dependent cypress[J]. PLANT ECOLOGY,2019-01-01,220(6):605-617
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