干旱区生态环境知识资源中心(Arid): Pre-fire vegetation drives post-fire outcomes in sagebrush ecosystems: evidence from field and remote sensing data

Arid

DOI	10.1002/ecs2.2929
	Pre-fire vegetation drives post-fire outcomes in sagebrush ecosystems: evidence from field and remote sensing data
	Barker, Brittany S.; Pilliod, David S.; Rigge, Matthew; Homer, Collin G.
通讯作者	Pilliod, DS (corresponding author), US Geol Survey, Forest & Rangeland Ecosyst Sci Ctr, Boise, ID 83706 USA.
来源期刊	ECOSPHERE
ISSN	2150-8925
出版年	2019
卷号	10 期号:11
英文摘要	Understanding the factors that influence vegetation responses to disturbance is important because vegetation is the foundation of food resources, wildlife habitat, and ecosystem properties and processes. We integrated vegetation cover data derived from field plots and remotely sensed Landsat images in two focal areas over a 37-yr period (1979-2016) to investigate how historical changes to community composition influence contemporary responses of vegetation to fire in sagebrush ecosystems in the Great Basin. Our objectives were (1) to quantify the magnitude and direction of change in the cover of native and exotic plant functional groups in relation to their exposure to fire; (2) to relate plant community changes to their historical composition, exposure to fire, and environmental conditions; and (3) to test for consistency of trends revealed by vegetation cover data derived from field plots and Landsat images. Historical (1979-1981) field data originated from 298 locations, Landsat-derived data and contemporary (2011-2016) field data originated from 448 locations, and an expanded set of locations were included in some analyses of Landsat-derived data. We found that areas burned by fire since the 1980s had higher annual herbaceous cover than unburned areas both historically and contemporarily. Models revealed a significant interaction between historical community composition and exposure to fire, which suggests that plots with historically high herbaceous cover were more susceptible to burning. Trends revealed by field and Landsat-derived cover data were only partially consistent, potentially due in part to methods used to predict cover values from Landsat images, and the time period over which each data set was collected. Our results suggest that burned areas historically occupied by sagebrush-dominated plant communities may have been invaded by exotic annuals prior to burning, possibly because of prior land uses, and after burning, have now transitioned to a persistent herbaceous-dominated state. This type of state transition has important consequences for forage quality, wildlife habitat, soil nutrients, and future disturbances, such as drought and wildfire.
英文关键词	alternative state cheatgrass disturbance ecological legacy exotic annual plant Great Basin Landsat monitoring plant functional groups public rangelands wildfire
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000512727700029
WOS关键词	CHEATGRASS BROMUS-TECTORUM ; LAND-USE LEGACIES ; ARTEMISIA-TRIDENTATA RECOVERY ; GREAT-BASIN DESERT ; RELATIVE IMPORTANCE ; PLANT-COMMUNITIES ; GRASS INVASION ; CLIMATE ; STEPPE ; MANAGEMENT
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369788
作者单位	[Barker, Brittany S.; Pilliod, David S.] US Geol Survey, Forest & Rangeland Ecosyst Sci Ctr, Boise, ID 83706 USA; [Barker, Brittany S.] Oregon State Univ, Integrated Plant Protect Ctr, 2040 Cordley Hall, Corvallis, OR 97331 USA; [Barker, Brittany S.] Oregon State Univ, Dept Hort, 2040 Cordley Hall, Corvallis, OR 97331 USA; [Rigge, Matthew] US Geol Survey, Earth Resources Observat & Sci Ctr, AFDS, Sioux Falls, SD 57198 USA; [Homer, Collin G.] US Geol Survey, Earth Resources Observat & Sci Ctr, Sioux Falls, SD 57198 USA
推荐引用方式 GB/T 7714	Barker, Brittany S.,Pilliod, David S.,Rigge, Matthew,et al. Pre-fire vegetation drives post-fire outcomes in sagebrush ecosystems: evidence from field and remote sensing data[J]. United States Geological Survey,2019,10(11).
APA	Barker, Brittany S.,Pilliod, David S.,Rigge, Matthew,&Homer, Collin G..(2019).Pre-fire vegetation drives post-fire outcomes in sagebrush ecosystems: evidence from field and remote sensing data.ECOSPHERE,10(11).
MLA	Barker, Brittany S.,et al."Pre-fire vegetation drives post-fire outcomes in sagebrush ecosystems: evidence from field and remote sensing data".ECOSPHERE 10.11(2019).