干旱区生态环境知识资源中心(Arid): Decadal change in a population of western pond turtles a an isolated agricultural site in the San Joaquin Valley, California, USA

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DOI	10.1071/PC20065
	Decadal change in a population of western pond turtles a an isolated agricultural site in the San Joaquin Valley, California, USA
	Germano, David J.
通讯作者	Germano, DJ (corresponding author), Calif State Univ, Dept Biol, Bakersfield, CA 93311 USA.
来源期刊	PACIFIC CONSERVATION BIOLOGY
ISSN	1038-2097
EISSN	2204-4604
出版年	2021
卷号	27 期号:3 页码:236-243
英文摘要	Although necessary for humans, agriculture can negatively affect populations of other species through direct and indirect means. This is true even for aquatic turtles, which require terrestrial areas in which to nest. The western pond turtle (Actinemys marmorata; sensu lato) has lost most of its habitat in the Central Valley of California, USA, to agricultural activities, flood control, and urbanisation. Although a few areas still support this turtle, most habitats are now altered by humans. In 1999 and 2009, I trapped western pond turtles at a remnant slough surrounded by irrigated agricultural fields in the San Joaquin Valley portion of the Central Valley. In 1999,1 caught 123 turtles in 2 days of trapping (4.39 turtles/trap night) and in 2009 I caught 216 turtles in 4 days of trapping (4.15 turtles/trap night). Both sexes grew fast, similar to other sites in the San Joaquin Valley. I caught significantly more turtles <= 5 years of age in 2009 than in 1999, but significantly fewer large adults. In 2009, I X-rayed females and the mean clutch size was 7.4 (n = 7). Although activities and vegetative cover associated with agriculture can impact aquatic turtles, the population of western pond turtles at the slough were reproducing well, but the marked decline in the number of large adults is of concern for the long-term sustainability of this population.
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000697660400003
WOS关键词	ACTINEMYS-MARMORATA ; GROWTH ; REPRODUCTION ; ECOLOGY ; RUNOFF ; DESERT ; RIVER
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/2XILL650/364275
作者单位	[Germano, David J.] Calif State Univ, Dept Biol, Bakersfield, CA 93311 USA
推荐引用方式 GB/T 7714	Germano, David J.. Decadal change in a population of western pond turtles a an isolated agricultural site in the San Joaquin Valley, California, USA[J],2021,27(3):236-243.
APA	Germano, David J..(2021).Decadal change in a population of western pond turtles a an isolated agricultural site in the San Joaquin Valley, California, USA.PACIFIC CONSERVATION BIOLOGY,27(3),236-243.
MLA	Germano, David J.."Decadal change in a population of western pond turtles a an isolated agricultural site in the San Joaquin Valley, California, USA".PACIFIC CONSERVATION BIOLOGY 27.3(2021):236-243.

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