干旱区生态环境知识资源中心(Arid): Fall-Winter Grazing After Fire in Annual Grass-Invaded Sagebrush Steppe Reduced Annuals and Increased a Native Bunchgrass

Arid

DOI	10.1016/j.rama.2021.03.001
	Fall-Winter Grazing After Fire in Annual Grass-Invaded Sagebrush Steppe Reduced Annuals and Increased a Native Bunchgrass
	Davies, Kirk W.; Bates, Jon D.; Perryman, Barry; Arispe, Sergio
通讯作者	Davies, KW (corresponding author), USDA ARS, Eastern Oregon Agr Res Ctr, 67826-A Hwy 205, Burns, OR 97720 USA.
来源期刊	RANGELAND ECOLOGY & MANAGEMENT
ISSN	1550-7424
EISSN	1551-5028
出版年	2021
卷号	77 期号:1 页码:1-8
英文摘要	Exotic annual grass invasion and dominance of rangelands is a concern across western North America and other semiarid and arid ecosystems around the world. Postfire invasion and dominance by exotic annual grasses in sagebrush communities is especially problematic as there are no cost-effective control strategies available for the vast acreages already invaded. However, fall-winter grazing by cattle has been suggested as a potential tool to decrease exotic annual grasses and encourage native perennial vegetation, but to date its efficacy has not been tested. We evaluated fall-winter grazing over 4 yr after wildfire in Wyoming big sagebrush (Artemisia tridentata Nutt. subsp. wyomingensis Beetle & Young) steppe invaded by exotic annual grasses. Fall-winter grazing reduced exotic annual grass and annual forb cover and density and increased the native perennial bunchgrass, Sandberg bluegrass (Poa secunda L.). Exotic annual grass cover and density were 1.5 x greater in ungrazed compared with fall-winter grazed areas after 4 yr. At this time, Sandberg bluegrass density and cover were 1.6 x and 2.3 x greater in fall-winter grazed compared with ungrazed areas. Large perennial bunchgrasses and perennial forbs did not increase with fall-winter grazing because either grazing did not facilitate their increase or they were slow to respond to decreases in exotic annuals. Fall-winter grazing likely decreased exotic annual grass by defoliating it during its early growth in the fall and late winter and by reducing ground cover that facilitates exotic annual grass emergence and growth. Fall-winter grazing clearly reduced exotic annual grasses, but its effects on native perennial vegetation were not conclusive. Careful application of fall-winter grazing appears to be a valuable tool for managing exotic annual grass cover and abundance, but longer-term research is necessary to determine if it can facilitate the return of native perennial dominance. Published by Elsevier Inc. on behalf of The Society for Range Management.
英文关键词	Artemisia tridentata Bromus tectorum cheatgrass dormant season grazing medusahead prescribed grazing
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000668475000001
WOS关键词	INVASIVE ALIEN PLANTS ; BROMUS-TECTORUM ; CRESTED WHEATGRASS ; EXOTIC GRASSES ; CHEATGRASS ; COMPETITION ; COMMUNITIES ; MANAGEMENT ; DYNAMICS ; SEEDLINGS
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367741
作者单位	[Davies, Kirk W.; Bates, Jon D.] USDA ARS, Eastern Oregon Agr Res Ctr, 67826-A Hwy 205, Burns, OR 97720 USA; [Perryman, Barry] Univ Nevada, Reno, NV 89557 USA; [Arispe, Sergio] Oregon State Univ, Corvallis, OR 97331 USA
推荐引用方式 GB/T 7714	Davies, Kirk W.,Bates, Jon D.,Perryman, Barry,et al. Fall-Winter Grazing After Fire in Annual Grass-Invaded Sagebrush Steppe Reduced Annuals and Increased a Native Bunchgrass[J],2021,77(1):1-8.
APA	Davies, Kirk W.,Bates, Jon D.,Perryman, Barry,&Arispe, Sergio.(2021).Fall-Winter Grazing After Fire in Annual Grass-Invaded Sagebrush Steppe Reduced Annuals and Increased a Native Bunchgrass.RANGELAND ECOLOGY & MANAGEMENT,77(1),1-8.
MLA	Davies, Kirk W.,et al."Fall-Winter Grazing After Fire in Annual Grass-Invaded Sagebrush Steppe Reduced Annuals and Increased a Native Bunchgrass".RANGELAND ECOLOGY & MANAGEMENT 77.1(2021):1-8.