Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1093/jmammal/gyx140 |
Rodent community dynamics as mediated by environment and competition in the San Joaquin Desert | |
Germano, David J.1; Saslaw, Lawrence R.2 | |
通讯作者 | Germano, David J. |
来源期刊 | JOURNAL OF MAMMALOGY
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ISSN | 0022-2372 |
EISSN | 1545-1542 |
出版年 | 2017 |
卷号 | 98期号:6页码:1615-1626 |
英文摘要 | We studied a rodent community in the San Joaquin Desert of California, United States, from 1993 to 2016. Using biannual trapping on a 144-trap plot, we found that mice of various species were rarely caught in appreciable numbers in contrast to many other studies of rodent communities in arid North America. Most captures were made of 3 species of kangaroo rats: giant kangaroo rat (Dipodomys ingens), Heermann’s kangaroo rat (D. heermanni), and San Joaquin kangaroo rat (D. nitratoides). The site was dominated by D. ingens, which, in many years, was the only kangaroo rat captured. Precipitation varied extremely across the study period with 2 periods of high rainfall and 2 periods of well-below-average rainfall. The rodent community seems to have been responding to both bottom-up control and the competitive dominance of D. ingens. In particular, our trapping showed 2 complete cycles of abundance of D. ingens, from very high numbers to crashes with either no or only 2 individuals caught during a session. In both cases, the species recovered after these crashes in abundance. Although we found some D. ingens living to 4-5 years, and D. heermanni and D. nitratoides living up to 3 years, annual survivorship estimates were low compared with other studies of kangaroo rats. Other studies, however, were of much shorter duration and therefore may have missed eventual downturns in population abundances. Dipodomys ingens is a protected species, and from a conservation standpoint, our data indicate that populations can be highly resilient even in the face of high environmental variability. |
英文关键词 | California desert Dipodomys giant kangaroo rat kangaroo rats longevity mice San Joaquin survivorship |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000417241500011 |
WOS关键词 | KANGAROO RATS DIPODOMYS ; POPULATION-DYNAMICS ; RAINFALL VARIABILITY ; GENETIC-VARIATION ; LONG-TERM ; RESOURCES ; INGENS ; PRECIPITATION ; CALIFORNIA ; GRASSLAND |
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/2XILL650/200650 |
作者单位 | 1.Calif State Univ, Dept Biol, Bakersfield, CA 93311 USA; 2.US Bur Land Management, 3801 Pegasus Dr, Bakersfield, CA 93308 USA |
推荐引用方式 GB/T 7714 | Germano, David J.,Saslaw, Lawrence R.. Rodent community dynamics as mediated by environment and competition in the San Joaquin Desert[J],2017,98(6):1615-1626. |
APA | Germano, David J.,&Saslaw, Lawrence R..(2017).Rodent community dynamics as mediated by environment and competition in the San Joaquin Desert.JOURNAL OF MAMMALOGY,98(6),1615-1626. |
MLA | Germano, David J.,et al."Rodent community dynamics as mediated by environment and competition in the San Joaquin Desert".JOURNAL OF MAMMALOGY 98.6(2017):1615-1626. |
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