干旱区生态环境知识资源中心(Arid): Cattle trampling increases dormant season mortality of a globally endangered desert milkvetch

Arid

DOI	10.1016/j.jnc.2020.125868
	Cattle trampling increases dormant season mortality of a globally endangered desert milkvetch
	Searle, Allyson B.; Meyer, Susan E.
通讯作者	Meyer, SE
来源期刊	JOURNAL FOR NATURE CONSERVATION
ISSN	1617-1381
EISSN	1618-1093
出版年	2020
卷号	56
英文摘要	Conflicting priorities for livestock grazing management in the context of rare plant conservation are common worldwide, especially in semiarid and arid ecosystems, where open-range livestock grazing is a primary land use. Detailed information on the interaction between livestock impacts and rare plant demography would facilitate improved management, yet this information is most often not available. In this study we examined the direct impacts of cattle trampling on dormant season survival of Astragalus holmgreniorum (Fabaceae), a globally endangered perennial spring ephemeral of the northeastern Mojave Desert, USA. Current management restricts livestock access to the dormant season, when plants are not active above-ground, but monitoring indicates possible population decline under this regime. We tagged > 2100 A. holmgreniorum plants to document dormant season survival and quantified cattle trampling and other disturbance impacts in small plots at six sites with contrasting disturbance regimes. We documented disturbance impacts on survival at the site, plot, and individual plant level across two dormant season iterations. We consistently found significant negative relationships between plant dormant season survival and cattle impacts. Plants at sites with heavy cattle trampling were up to five times more likely to experience mortality than those at sites with low cattle impact. Other surface disturbances (rodent activity, human impacts, water erosion) were also quantified but contributed substantially to reduced survival in only one case of water erosion disturbance. We conclude that grazing management in A. holmgreniorum critical habitat on federal land may require modification to reduce extinction risk for this federally listed endangered species.
英文关键词	Astragalus holmgreniorum Endangered species Grazing management Rare plant conservation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000556147300006
WOS关键词	ASTRAGALUS-HOLMGRENIORUM ; SEEDBED PREPARATION ; VEGETATION ; DIVERSITY ; PLANTS ; ALIEN ; MANAGEMENT ; PATTERNS ; STRATEGY ; RARE
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325443
作者单位	[Searle, Allyson B.] Utah Valley Univ, Dept Biol, 800 W Univ Pkwy, Orem, UT 84058 USA; [Meyer, Susan E.] US Forest Serv, USDA, Rocky Mt Res Stn, Shrub Sci Lab, 735 North 500 East, Provo, UT 84606 USA
推荐引用方式 GB/T 7714	Searle, Allyson B.,Meyer, Susan E.. Cattle trampling increases dormant season mortality of a globally endangered desert milkvetch[J],2020,56.
APA	Searle, Allyson B.,&Meyer, Susan E..(2020).Cattle trampling increases dormant season mortality of a globally endangered desert milkvetch.JOURNAL FOR NATURE CONSERVATION,56.
MLA	Searle, Allyson B.,et al."Cattle trampling increases dormant season mortality of a globally endangered desert milkvetch".JOURNAL FOR NATURE CONSERVATION 56(2020).