干旱区生态环境知识资源中心(Arid): Press-pulse interactions and long-term community dynamics in a Chihuahuan Desert grassland

Arid

DOI	10.1111/jvs.12881
	Press-pulse interactions and long-term community dynamics in a Chihuahuan Desert grassland
	Collins, Scott L.1; Chung, Y. Anny 2,3; Baur, Lauren E.1; Hallmark, Alesia 1; Ohlert, Timothy J.1; Rudgers, Jennifer A.1
通讯作者	Collins, Scott L.
来源期刊	JOURNAL OF VEGETATION SCIENCE
ISSN	1100-9233
EISSN	1654-1103
出版年	2020
卷号	31 期号:5 页码:722-732
英文摘要	Questions Reordering of dominant species is an important mechanism of community response to global environmental change. We asked how wildfire (a pulse event) interacts with directional changes in climate (environmental presses) to affect plant community dynamics in a Chihuahuan Desert grassland. Location Sevilleta National Wildlife Refuge, Socorro County, New Mexico, USA. Methods Vegetation cover by species was measured twice each year from 1989 to 2019 along two permanently located 400-m long line intercept transects, one in Chihuahuan Desert grassland, and the second in the ecotone between Chihuahuan Desert and Great Plains grasslands. Trends in community structure were plotted over time, and climate sensitivity functions were used to predict how changes in the Pacific Decadal Oscillation (PDO) affected vegetation dynamics. Results Community composition was undergoing gradual change in the absence of disturbance in the ecotone and desert grassland. These changes were related to the reordering of abundances between two foundation grasses, Bouteloua eriopoda and B. gracilis, that together account for >80% of above-ground primary production. However, reordering varied over time in response to wildfire (a pulse) and changes in the PDO (a press). Community dynamics were initially related to the warm and cool phases of the PDO, but in the ecotone these relationships changed following wildfire, which reset the system. Conclusion Species reordering is an important component of community dynamics in response to ecological presses. However, reordering is a complex, non-linear process in response to ecological presses that may change over time and interact with pulse disturbances.
英文关键词	Bouteloua eriopoda Bouteloua gracilis climate change desert grassland fire Pacific Decadal Oscillation species reordering
类型	Article
语种	英语
国家	USA
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000530552100001
WOS关键词	NET PRIMARY PRODUCTION ; PRECIPITATION VARIABILITY ; MONSOON PRECIPITATION ; TEMPORAL DYNAMICS ; BIODIVERSITY ; SENSITIVITY ; TRANSITION ; DROUGHT ; MAINTENANCE ; VEGETATION
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/2XILL650/319066
作者单位	1.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA; 2.Univ Georgia, Dept Plant Pathol, Athens, GA 30602 USA; 3.Univ Georgia, Dept Plant Biol, Athens, GA 30602 USA
推荐引用方式 GB/T 7714	Collins, Scott L.,Chung, Y. Anny,Baur, Lauren E.,et al. Press-pulse interactions and long-term community dynamics in a Chihuahuan Desert grassland[J],2020,31(5):722-732.
APA	Collins, Scott L.,Chung, Y. Anny,Baur, Lauren E.,Hallmark, Alesia,Ohlert, Timothy J.,&Rudgers, Jennifer A..(2020).Press-pulse interactions and long-term community dynamics in a Chihuahuan Desert grassland.JOURNAL OF VEGETATION SCIENCE,31(5),722-732.
MLA	Collins, Scott L.,et al."Press-pulse interactions and long-term community dynamics in a Chihuahuan Desert grassland".JOURNAL OF VEGETATION SCIENCE 31.5(2020):722-732.