干旱区生态环境知识资源中心(Arid): Using movement to inform conservation corridor design for Mojave desert tortoise

Arid

DOI	10.1186/s40462-020-00224-8
	Using movement to inform conservation corridor design for Mojave desert tortoise
	Hromada, Steven J.; Esque, Todd C.; Vandergast, Amy G.; Dutcher, Kirsten E.; Mitchell, Corey I.; Gray, Miranda E.; Chang, Tony; Dickson, Brett G.; Nussear, Kenneth E.
通讯作者	Hromada, SJ
来源期刊	MOVEMENT ECOLOGY
ISSN	2051-3933
出版年	2020
卷号	8 期号:1
英文摘要	Background Preserving corridors for movement and gene flow among populations can assist in the recovery of threatened and endangered species. As human activity continues to fragment habitats, characterizing natural corridors is important in establishing and maintaining connectivity corridors within the anthropogenic development matrix. The Mojave desert tortoise (Gopherus agassizii) is a threatened species occupying a variety of habitats in the Mojave and Colorado Deserts. Desert tortoises have been referred to as corridor-dwellers, and understanding how they move within suitable habitat can be crucial to defining corridors that will sustain sufficient gene flow to maintain connections among populations amidst the increases in human development. Methods To elucidate how tortoises traverse available habitat and interact with potentially inhospitable terrain and human infrastructure, we used GPS dataloggers to document fine-scale movement of individuals and estimate home ranges at ten study sites along the California/Nevada border. Our sites encompass a variety of habitats, including mountain passes that serve as important natural corridors connecting neighboring valleys, and are impacted by a variety of linear anthropogenic features. We used path selection functions to quantify tortoise movements and develop resistance surfaces based on landscape characteristics including natural features, anthropogenic alterations, and estimated home ranges with autocorrelated kernel density methods. Using the best supported path selection models and estimated home ranges, we determined characteristics of known natural corridors and compared them to mitigation corridors (remnant habitat patches) that have been integrated into land management decisions in the Ivanpah Valley. Results Tortoises avoided areas of high slope and low perennial vegetation cover, avoided moving near low-density roads, and traveled along linear barriers (fences and flood control berms). Conclusions We found that mitigation corridors designated between solar facilities should be wide enough to retain home ranges and maintain function. Differences in home range size and movement resistance between our two natural mountain pass corridors align with differences in genetic connectivity, suggesting that not all natural corridors provide the same functionality. Furthermore, creation of mitigation corridors with fences may have unintended consequences and may function differently than natural corridors. Understanding characteristics of corridors with different functionality will help future managers ensure that connectivity is maintained among Mojave desert tortoise populations.
英文关键词	Connectivity Path-selection Home range Utility-scale solar
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:000575459400001
WOS关键词	GOPHERUS-AGASSIZII ; HABITAT USE ; HOME-RANGE ; LANDSCAPE CONNECTIVITY ; RESOURCE SELECTION ; SONORAN DESERT ; SPACE USE ; ROAD ; SCALE ; DISPERSAL
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	United States Geological Survey
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326642
作者单位	[Hromada, Steven J.] Univ Nevada, Program Ecol Evolut & Conservat Biol, 1664 N Virginia St, Reno, NV 89557 USA; [Hromada, Steven J.; Dutcher, Kirsten E.; Mitchell, Corey I.; Nussear, Kenneth E.] Univ Nevada, Dept Geog, 1664 N Virginia St, Reno, NV 89557 USA; [Esque, Todd C.] US Geol Survey, Western Ecol Res Ctr, 160 N Stephanie St, Henderson, NV 89074 USA; [Vandergast, Amy G.] US Geol Survey, Western Ecol Res Ctr, 4165 Spruance Rd,Suite 200, San Diego, CA 92101 USA; [Gray, Miranda E.; Chang, Tony; Dickson, Brett G.] Conservat Sci Partners, 11050 Pioneer Trail,Suite 202, Truckee, CA 96161 USA; [Dickson, Brett G.] No Arizona Univ, Landscape Conservat Initiat, POB 5694, Flagstaff, AZ 86011 USA
推荐引用方式 GB/T 7714	Hromada, Steven J.,Esque, Todd C.,Vandergast, Amy G.,et al. Using movement to inform conservation corridor design for Mojave desert tortoise[J]. United States Geological Survey,2020,8(1).
APA	Hromada, Steven J..,Esque, Todd C..,Vandergast, Amy G..,Dutcher, Kirsten E..,Mitchell, Corey I..,...&Nussear, Kenneth E..(2020).Using movement to inform conservation corridor design for Mojave desert tortoise.MOVEMENT ECOLOGY,8(1).
MLA	Hromada, Steven J.,et al."Using movement to inform conservation corridor design for Mojave desert tortoise".MOVEMENT ECOLOGY 8.1(2020).