DOI: 10.1111/gcb.12775
论文题名: Native and exotic plant cover vary inversely along a climate gradient 11 years following stand-replacing wildfire in a dry coniferous forest, Oregon, USA
作者: Dodson E.K. ; Root H.T.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2015
卷: 21, 期: 2 起始页码: 666
结束页码: 675
语种: 英语
英文关键词: Cheatgrass
; Climate change type drought
; Exotic invasion
; Medusahead
; Ponderosa pine forest
; State change
Scopus关键词: climate change
; climate effect
; coniferous forest
; ecosystem function
; environmental change
; environmental disturbance
; grass
; plant
; vegetation cover
; wildfire
; Oregon
; United States
; Bromus tectorum
; Poaceae
; Taeniatherum
; biodiversity
; climate
; climate change
; fire
; forest
; introduced species
; plant
; United States
; Biodiversity
; Climate
; Climate Change
; Fires
; Forests
; Introduced Species
; Oregon
; Plants
英文摘要: Community re-assembly following future disturbances will often occur under warmer and more moisture-limited conditions than when current communities assembled. Because the establishment stage is regularly the most sensitive to climate and competition, the trajectory of recovery from disturbance in a changing environment is uncertain, but has important consequences for future ecosystem functioning. To better understand how ongoing warming and rising moisture limitation may affect recovery, we studied native and exotic plant composition 11 years following complete stand-replacing wildfire in a dry coniferous forest spanning a large gradient in climatic moisture deficit (CMD) from warm and dry low elevation sites to relatively cool and moist higher elevations sites. We then projected future precipitation, temperature and CMD at our study locations for four scenarios selected to encompass a broad range of possible future conditions for the region. Native perennials dominated relatively cool and moist sites 11 years after wildfire, but were very sparse at the warmest and driest (high CMD) sites, particularly when combined with high topographic sun exposure. In contrast, exotic species (primarily annual grasses) were dominant or co-dominant at the warmest and driest sites, especially with high topographic sun exposure. All future scenarios projected increasing temperature and CMD in coming decades (e.g., from 4.5% to 29.5% higher CMD by the 2080's compared to the 1971-2000 average), even in scenarios where growing season (May-September) precipitation increased. These results suggest increasing temperatures and moisture limitation could facilitate longer term (over a decade) transitions toward exotic-dominated communities after severe wildfire when a suitable exotic seed source is present. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61921
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Forest Ecosystems and Society, Oregon State University, 321 Richardson Hall, Corvallis, OR, United States; Department of Botany, Weber State University, 3772 North Campus Drive, Department 2504, Ogden, UT, United States
Recommended Citation:
Dodson E.K.,Root H.T.. Native and exotic plant cover vary inversely along a climate gradient 11 years following stand-replacing wildfire in a dry coniferous forest, Oregon, USA[J]. Global Change Biology,2015-01-01,21(2)