干旱区生态环境知识资源中心(Arid): Conservation of threatened San Joaquin antelope squirrels: distribution surveys, habitat suitability, and conservation recommendations

Arid

DOI	10.51492/cfwj.cesasi.21
	Conservation of threatened San Joaquin antelope squirrels: distribution surveys, habitat suitability, and conservation recommendations
	Cypher, Brian L.; Kelly, Erica C.; O'Leary, Reagen; Phillips, Scott E.; Saslaw, Lawrence R.; Tennant, Erin N.; Westall, Tory L.
通讯作者	Cypher, BL (corresponding author), Calif State Univ Stanislaus, Endangered Species Recovery Program, One Univ Circle, Turlock, CA 95382 USA.
来源期刊	CALIFORNIA FISH AND GAME
ISSN	0008-1078
EISSN	2331-0405
出版年	2021
卷号	107 页码:345-366
英文摘要	The San Joaquin antelope squirrel (Ammospermophilus nelsoni: SJAS) is listed as Threatened pursuant to the California Endangered Species Act due to profound habitat loss throughout its range in the San Joaquin Desert in California. Habitat loss is still occurring and critical needs for SJAS include identifying occupied sites, quantifying optimal habitat conditions, and conserving habitat. Our objectives were to (1) conduct surveys to identify sites where SJAS were present, (2) assess habitat attributes on all survey sites, (3) generate a GIS-based model of SJAS habitat suitability, (4) use the model to determine the quantity and quality of remaining habitat, and (5) use these results to develop conservation recommendations. SJAS were detected on 160 of the 326 sites we surveyed using automated camera stations. Sites with SJAS typically were in arid upland shrub scrub communities where desert saltbush (Atriplex polycarpa) or jointfir (Ephedra californica) were the dominant shrubs, although shrubs need not be present for SJAS to be present. Sites with SJAS usually had relatively sparse ground cover with >10% bare ground and Arabian grass (Schismus arabicus) was the dominant grass. SJAS were more likely to occur on sites where kangaroo rats (Dipodomys spp.) were present and burrow abundance was greater, but SJAS were less likely to be present on sites with California ground squirrels (Otospermophilus beecheyi). Based on our habitat suitability model, an estimated 5,931 km(2) of high or moderately high quality habitat and 4,753 km(2) of lower quality habitat remain. To conserve SJAS, we recommend (1) conducting additional SJAS surveys on sites not surveyed but with suitable habitat, (2) conserving unprotected lands with suitable habitat, (3) managing vegetation on occupied sites if necessary, (4) restoring disturbed lands to increase suitability for SJAS, and (5) conducting translocations of SJAS to unoccupied sites with suitable habitat.
英文关键词	Ammospermophilus nelsoni conservation distribution habitat suitability San Joaquin antelope squirrel San Joaquin Valley threatened
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000672513100022
WOS关键词	GRASSES ; DESERT ; VALLEY
WOS类目	Fisheries ; Zoology
WOS研究方向	Fisheries ; Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362764
作者单位	[Cypher, Brian L.; Kelly, Erica C.; Phillips, Scott E.; Saslaw, Lawrence R.; Westall, Tory L.] Calif State Univ Stanislaus, Endangered Species Recovery Program, One Univ Circle, Turlock, CA 95382 USA; [O'Leary, Reagen; Tennant, Erin N.] Calif Dept Fish & Wildlife, Cent Reg, Lands Unit, 1234 E Shaw Ave, Fresno, CA 93710 USA
推荐引用方式 GB/T 7714	Cypher, Brian L.,Kelly, Erica C.,O'Leary, Reagen,et al. Conservation of threatened San Joaquin antelope squirrels: distribution surveys, habitat suitability, and conservation recommendations[J],2021,107:345-366.
APA	Cypher, Brian L..,Kelly, Erica C..,O'Leary, Reagen.,Phillips, Scott E..,Saslaw, Lawrence R..,...&Westall, Tory L..(2021).Conservation of threatened San Joaquin antelope squirrels: distribution surveys, habitat suitability, and conservation recommendations.CALIFORNIA FISH AND GAME,107,345-366.
MLA	Cypher, Brian L.,et al."Conservation of threatened San Joaquin antelope squirrels: distribution surveys, habitat suitability, and conservation recommendations".CALIFORNIA FISH AND GAME 107(2021):345-366.