干旱区生态环境知识资源中心(Arid): Compensatory Microhabitat Selection by Northern Pacific Rattlesnakes (Crotalus oreganus oreganus) in a Cool and Wet Macroclimate

Arid

DOI	10.1670/17-153
	Compensatory Microhabitat Selection by Northern Pacific Rattlesnakes (Crotalus oreganus oreganus) in a Cool and Wet Macroclimate
	Hecker, Lee J.1; Bean, William T.2; Marks, Sharyn B.1
通讯作者	Hecker, Lee J.
来源期刊	JOURNAL OF HERPETOLOGY
ISSN	0022-1511
EISSN	1937-2418
出版年	2020
卷号	54 期号:1 页码:39-49
英文摘要	Northern Pacific Rattlesnakes (Crotalus oreganus oreganus) have a range that extends from southern California into British Columbia. This subspecies is common in relatively warm and arid regions, but also occurs in habitats that are neither warm nor arid. We hypothesized that the presence of suitable microhabitat conditions can compensate for a less suitable macroclimate, allowing C. o. oreganus to exist in less suitable regions. We developed environmental niche models for C. o. oreganus at two spatial scales: (1) northern California and western Oregon, and (2) the northern California coast. These models explored macroclimatic suitability of northern, coastal California relative to other regions within the range of C. o. oreganus. The models revealed that the three most northern and coastal counties of California have a significantly less suitable macroclimate relative to the rest of each study area. Next, we used paired resource selection functions to determine microhabitat differences between rocky outcrops used as hibernacula and outcrops that are unoccupied by rattlesnakes despite similarities. Our analysis indicated selection for outcrops with more deep crevices, less vegetative cover, and slopes facing due south (180 degrees from North). Additionally, we mapped landslides near hibernacula, which revealed that hibernacula commonly occurred within the head-scarps of landslides. We suggest that because landslide triggers (e.g., heavy rainfall and earthquakes) occur frequently along California's north coast, more rocky outcrops are created that are suitable as hibernacula. The relatively high abundance of these suitable outcrops compensates for the marginal macroclimate, allowing C. o. oreganus to occur in the region.
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000513005100006
WOS关键词	SPECIES DISTRIBUTION ; SITE SELECTION ; ECOLOGY ; SNAKES ; MELANOLEUCUS ; HIBERNACULA ; PITUOPHIS ; BEHAVIOR ; VIRIDIS ; MODEL
WOS类目	Zoology
WOS研究方向	Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314977
作者单位	1.Humboldt State Univ, Dept Biol Sci, Arcata, CA 95521 USA; 2.Humboldt State Univ, Dept Wildlife, Arcata, CA 95521 USA
推荐引用方式 GB/T 7714	Hecker, Lee J.,Bean, William T.,Marks, Sharyn B.. Compensatory Microhabitat Selection by Northern Pacific Rattlesnakes (Crotalus oreganus oreganus) in a Cool and Wet Macroclimate[J],2020,54(1):39-49.
APA	Hecker, Lee J.,Bean, William T.,&Marks, Sharyn B..(2020).Compensatory Microhabitat Selection by Northern Pacific Rattlesnakes (Crotalus oreganus oreganus) in a Cool and Wet Macroclimate.JOURNAL OF HERPETOLOGY,54(1),39-49.
MLA	Hecker, Lee J.,et al."Compensatory Microhabitat Selection by Northern Pacific Rattlesnakes (Crotalus oreganus oreganus) in a Cool and Wet Macroclimate".JOURNAL OF HERPETOLOGY 54.1(2020):39-49.