Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11258-015-0546-9 |
Desert wildfire impacts on plant community function | |
Horn, Kevin J.1; Wilkinson, Joseph2; White, Steven2; St Clair, Samuel B.2 | |
通讯作者 | St Clair, Samuel B. |
来源期刊 | PLANT ECOLOGY
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ISSN | 1385-0237 |
EISSN | 1573-5052 |
出版年 | 2015 |
卷号 | 216期号:12页码:1623-1634 |
英文摘要 | Dramatic increases are occurring in the size and frequency of wildfires in arid ecosystems. The objective of this study was to characterize the composition of plant communities after desert wildfires and evaluate plant functional responses to post-fire environments. Plant community characteristics and functional traits were assessed from 2009 to 2011 along paired burned-unburned transects of multiple independent fires that occurred in the Mojave Desert in 2005. We measured plant community composition and diversity; xylem water potential; and foliar nitrogen, phosphorus, and non-structural carbohydrates of Yucca brevifolia and Larrea tridentata. Fire effects on the plant community remained evident on burned landscapes 6 years post-fire with 81, 86, and 42 % less shrub abundance, cover, and diversity. Plant functional traits had neutral to positive responses to burned landscapes that varied by species and season. Plants on burned and unburned landscapes had similar xylem water potentials following wetter periods but were significantly better in burned landscapes during dry periods and were more pronounced for L. tridentata than Y. brevifolia. Both species tended to maintain higher foliar nitrogen and phosphorus concentrations in burned areas across seasons. Post-fire conditions increased non-structural carbohydrates in L. tridentata leaves in summer and fall periods. L. tridentata had 50 % greater canopy leaf area index in burned landscapes compared to unburned areas. Improvements in water and nutrient relations of surviving desert shrubs in burned landscapes may be associated with competitive release from neighboring plants or altered root-shoot ratios and may enhance reproductive capacity that could facilitate the post-fire recovery of woody shrubs. |
英文关键词 | Creosote bush Invasion Joshua tree Mojave Desert Ecophysiology Red brome Water potential |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000368419800004 |
WOS关键词 | CREOSOTE BUSH SCRUB ; MOJAVE DESERT ; LARREA-TRIDENTATA ; YUCCA-BREVIFOLIA ; WATER RELATIONS ; FIRE ; VEGETATION ; NITROGEN ; SHRUBS ; FACILITATION |
WOS类目 | Plant Sciences ; Ecology ; Forestry |
WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology ; Forestry |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/189661 |
作者单位 | 1.Virginia Polytech Inst & State Univ, Dept Forest Resources & Environm Conservat, 311A Cheatham Hall, Blacksburg, VA 24061 USA; 2.Brigham Young Univ, Dept Plant & Wildlife Sci, 4124 LSB, Provo, UT 84602 USA |
推荐引用方式 GB/T 7714 | Horn, Kevin J.,Wilkinson, Joseph,White, Steven,et al. Desert wildfire impacts on plant community function[J],2015,216(12):1623-1634. |
APA | Horn, Kevin J.,Wilkinson, Joseph,White, Steven,&St Clair, Samuel B..(2015).Desert wildfire impacts on plant community function.PLANT ECOLOGY,216(12),1623-1634. |
MLA | Horn, Kevin J.,et al."Desert wildfire impacts on plant community function".PLANT ECOLOGY 216.12(2015):1623-1634. |
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