干旱区生态环境知识资源中心(Arid): Effects of grazing on plant communities and successional processes vary along an aridity gradient at a northern temperate grassland

Arid

DOI	10.1007/s11258-021-01196-4
	Effects of grazing on plant communities and successional processes vary along an aridity gradient at a northern temperate grassland
	Hamilton, Nicholas P.; Sanborn, Paul T.; Burton, Philip J.
通讯作者	Hamilton, NP (corresponding author), Minist Forests Lands Nat Resource Operat & Rural, Range Branch, 2000 S Ospika Blvd, Prince George, BC V2N 4W5, Canada.
来源期刊	PLANT ECOLOGY
ISSN	1385-0237
EISSN	1573-5052
出版年	2022
英文摘要	The intermountain grasslands of North America reach their most northern geographic extent in interior British Columbia's Cariboo-Chilcotin region. Here, this study examined the long-term effects of livestock grazing exclusion and reductions in grazing severity on plant community characteristics including plant and litter cover, species richness and abundance of leading species of 33 grassland sites across a broad aridity and soil property gradient. Across the aridity gradient, grazing reduced species richness, plant cover, and litter cover. However, the effects of grazing on dominant species varied across the gradient. In more arid grasslands, historical grazing substantially reduced cover of late-seral native bunchgrass Psuedoroegnaria spicata, and repeated measurements indicate that very long time periods are necessary for successional processes associated with recovery of native bunchgrasses. At the cool-wet end of the aridity gradient, successional processes are more rapid but dominated by exotic species Poa pratensis and Tragopogon pratensis. Recent (past 20 years) light grazing and rest-rotation have favored Poa pratensis at the expense of native needlegrasses (Achnatherum spp. and Hesperostipa spp.). We suggest that absence of a dominant large-stature native bunchgrass for mesic grasslands was a key factor in the invasion and dominance of Poa pratensis.
英文关键词	Achnatherum richardsonii Functional trait Hesperostipa comata Niche Poa pratensis Pseudoroegnaria spicata
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000709680000002
WOS关键词	CLIMATE-CHANGE ; GREAT-BASIN ; RANGE ; MANAGEMENT ; RESISTANCE ; VEGETATION ; DIVERSITY ; SOILS ; FIRE
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/2XILL650/367633
作者单位	[Hamilton, Nicholas P.] Minist Forests Lands Nat Resource Operat & Rural, Range Branch, 2000 S Ospika Blvd, Prince George, BC V2N 4W5, Canada; [Hamilton, Nicholas P.; Sanborn, Paul T.] Univ Northern British Columbia, Ecosyst Sci & Management Program, Prince George, BC, Canada; [Burton, Philip J.] Univ Northern British Columbia, Ecosyst Sci & Management Program, Terrace, BC, Canada
推荐引用方式 GB/T 7714	Hamilton, Nicholas P.,Sanborn, Paul T.,Burton, Philip J.. Effects of grazing on plant communities and successional processes vary along an aridity gradient at a northern temperate grassland[J],2022.
APA	Hamilton, Nicholas P.,Sanborn, Paul T.,&Burton, Philip J..(2022).Effects of grazing on plant communities and successional processes vary along an aridity gradient at a northern temperate grassland.PLANT ECOLOGY.
MLA	Hamilton, Nicholas P.,et al."Effects of grazing on plant communities and successional processes vary along an aridity gradient at a northern temperate grassland".PLANT ECOLOGY (2022).