干旱区生态环境知识资源中心(Arid): Resource selection of a nomadic ungulate in a dynamic landscape

Arid

DOI	10.1371/journal.pone.0246809
	Resource selection of a nomadic ungulate in a dynamic landscape
	Stratmann, Theresa S. M.; Dejid, Nandintsetseg; Calabrese, Justin M.; Fagan, William F.; Fleming, Christen H.; Olson, Kirk A.; Mueller, Thomas
通讯作者	Stratmann, TSM (corresponding author), Goethe Univ, Dept Biol Sci, Frankfurt, Germany. ; Stratmann, TSM (corresponding author), Senckenberg Gesell Nat Forsch, Senckenberg Biodivers & Climate Res Ctr, Frankfurt, Germany.
来源期刊	PLOS ONE
ISSN	1932-6203
出版年	2021
卷号	16 期号:2
英文摘要	Nomadic movements are often a consequence of unpredictable resource dynamics. However, how nomadic ungulates select dynamic resources is still understudied. Here we examined resource selection of nomadic Mongolian gazelles (Procapra gutturosa) in the Eastern Steppe of Mongolia. We used daily GPS locations of 33 gazelles tracked up to 3.5 years. We examined selection for forage during the growing season using the Normalized Difference Vegetation Index (NDVI). In winter we examined selection for snow cover which mediates access to forage and drinking water. We studied selection at the population level using resource selection functions (RSFs) as well as on the individual level using step-selection functions (SSFs) at varying spatio-temporal scales from 1 to 10 days. Results from the population and the individual level analyses differed. At the population level we found selection for higher than average NDVI during the growing season. This may indicate selection for areas with more forage cover within the arid steppe landscape. In winter, gazelles selected for intermediate snow cover, which may indicate preference for areas which offer some snow for hydration but not so much as to hinder movement. At the individual level, in both seasons and across scales, we were not able to detect selection in the majority of individuals, but selection was similar to that seen in the RSFs for those individuals showing selection. Difficulty in finding selection with SSFs may indicate that Mongolian gazelles are using a random search strategy to find forage in a landscape with large, homogeneous areas of vegetation. The combination of random searches and landscape characteristics could therefore obscure results at the fine scale of SSFs. The significant results on the broader scale used for the population level RSF highlight that, although individuals show uncoordinated movement trajectories, they ultimately select for similar vegetation and snow cover.
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:000620071700019
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/369010
作者单位	[Stratmann, Theresa S. M.; Mueller, Thomas] Goethe Univ, Dept Biol Sci, Frankfurt, Germany; [Stratmann, Theresa S. M.; Dejid, Nandintsetseg; Mueller, Thomas] Senckenberg Gesell Nat Forsch, Senckenberg Biodivers & Climate Res Ctr, Frankfurt, Germany; [Calabrese, Justin M.] Ctr Adv Syst Understanding, Gorlitz, Germany; [Fagan, William F.; Fleming, Christen H.] Univ Maryland, Dept Biol, College Pk, MD 20742 USA; [Fleming, Christen H.] Natl Zool Pk, Smithsonian Conservat Biol Inst, Front Royal, VA USA; [Olson, Kirk A.] Wildlife Conservat Soc, Mongolia Program, Ulaanbaatar, Mongolia
推荐引用方式 GB/T 7714	Stratmann, Theresa S. M.,Dejid, Nandintsetseg,Calabrese, Justin M.,et al. Resource selection of a nomadic ungulate in a dynamic landscape[J],2021,16(2).
APA	Stratmann, Theresa S. M..,Dejid, Nandintsetseg.,Calabrese, Justin M..,Fagan, William F..,Fleming, Christen H..,...&Mueller, Thomas.(2021).Resource selection of a nomadic ungulate in a dynamic landscape.PLOS ONE,16(2).
MLA	Stratmann, Theresa S. M.,et al."Resource selection of a nomadic ungulate in a dynamic landscape".PLOS ONE 16.2(2021).