干旱区生态环境知识资源中心(Arid): How Long Before a Second Defoliation of Actively Growing Grass Plants in the Desert Grassland?

Arid

DOI	10.3389/fvets.2020.600734
	How Long Before a Second Defoliation of Actively Growing Grass Plants in the Desert Grassland?
	Noelle, Sarah; Lyons, Timothy; Gorlier, Alessandra; McClaran, Mitchel P.; Nichols, Mary; Ruyle, George
通讯作者	Sarah, (corresponding author), Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA.
来源期刊	FRONTIERS IN VETERINARY SCIENCE
EISSN	2297-1769
出版年	2020
卷号	7
英文摘要	In the Desert Grassland, second and subsequent defoliations on perennial grasses during the active growing season can have substantial impacts on grass recovery and reproduction following herbivory. Land managers implement tactics to avoid multiple defoliations on plants by way of rotational grazing, reduced stocking rates, and/or reduced time spent within a given pasture. We explored frequency and rate of defoliation by cattle on perennial bunchgrasses within an 11-day grazing period in three pastures including distance to water (300 and 600 m) and plant height to determine their influence on animal diet selection. Results indicate that 32% of all marked plants were defoliated by cattle and only 5% of defoliated plants were defoliated a second time by day 10 of the grazing period. Defoliation patterns in the studied pastures did not differ between two distances from water, or in relation to plant height. However, at the second defoliation cattle grazed plants that were shorter than at the first defoliation suggesting a selection for high quality re-growth over larger forage on offer. The results of this study show that a 10-day grazing period during the growing season of the Desert Grassland is an effective strategy to avoid second defoliations on individual perennial grass plants while maintaining sufficient forage for use during the dormant winter grazing season.
英文关键词	stocking rate adaptive management regrowth rate distance to water grazing (rangelands)
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000601265900001
WOS关键词	TILLER DEFOLIATION ; MATOPOS SANDVELD ; INDIVIDUAL TILLERS ; PATTERNS ; FREQUENCY ; HERBAGE ; CATTLE ; STEMS
WOS类目	Veterinary Sciences
WOS研究方向	Veterinary Sciences
来源机构	University of Arizona
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/348871
作者单位	[Noelle, Sarah; Gorlier, Alessandra; McClaran, Mitchel P.; Ruyle, George] Univ Arizona, Sch Nat Resources & Environm, Tucson, AZ 85721 USA; [Lyons, Timothy] Bur Land Management, Dept Interior, Washington, DC USA; [Nichols, Mary] ARS, Dept Agr, Washington, DC USA
推荐引用方式 GB/T 7714	Noelle, Sarah,Lyons, Timothy,Gorlier, Alessandra,et al. How Long Before a Second Defoliation of Actively Growing Grass Plants in the Desert Grassland?[J]. University of Arizona,2020,7.
APA	Noelle, Sarah,Lyons, Timothy,Gorlier, Alessandra,McClaran, Mitchel P.,Nichols, Mary,&Ruyle, George.(2020).How Long Before a Second Defoliation of Actively Growing Grass Plants in the Desert Grassland?.FRONTIERS IN VETERINARY SCIENCE,7.
MLA	Noelle, Sarah,et al."How Long Before a Second Defoliation of Actively Growing Grass Plants in the Desert Grassland?".FRONTIERS IN VETERINARY SCIENCE 7(2020).