Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1046/j.1365-2699.2000.00387.x |
How isolated are Pleistocene refugia! Results from a study on a relict woodrat population from the Mojave Desert, California | |
Smith, FA; Matocq, MD; Melendez, KF; Ditto, AM; Kelly, PA | |
通讯作者 | Smith, FA |
来源期刊 | JOURNAL OF BIOGEOGRAPHY
![]() |
ISSN | 0305-0270 |
出版年 | 2000 |
卷号 | 27期号:2页码:483-500 |
英文摘要 | Pleistocene vicariance is often invoked to explain the disjunct populations of animals in habitat refugia throughout the southwestern United States. The combined effects of small population size and isolation from the rest of the contiguous range are thought to result in genetic differentiation of relict organisms. Here, we describe a relict population of dusky-footed woodrats (Neotoma fuscipes Baird) found in a pinyon-juniper-oak community in a small mountain range within the Mojave Desert. We compare morphological and genetic data for these individuals with two populations within the contiguous range, and with another species of woodrat (Neotoma lepida). We also examine the distributional overlap between contemporary oak species and dusky-footed woodrats, and estimate the potential oak woodland habitat available during the late Quaternary. As expected, both the morphological and generic analysis confirm that the relict population is N. fuscipes. Within the limitations of our data, we detect no evidence of differentiation, Instead, the relict population forms a paraphyletic group with the nearest population within the contiguous range. This may be explained by the combined influences of a shorter period of isolation and a greater effective population size than was originally expected. The linkage between contemporary oak and dusky-footed woodrat distributions is very tight, reinforcing the idea of an obligate relationship between the two. We estimate that at similar to 8000 ybp, pinyon-juniper-oak woodlands may have covered similar to 53% of the central Mojave, forming large contiguous areas of habitat. Although considerably more fragmented, at present similar to 12% of the area consists of relict woodlands. Our results suggest that there may be numerous other woodrat refugia, with a relatively high degree of connectiveness between the larger ones. Animals within them may effectively function as a single metapopulation, buffering against occasional stochastic extinction events. |
英文关键词 | oak/juniper woodlands biogeography Pleistocene vicariance climate change d-loop evolution Neotoma fuscipes |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000089193500020 |
WOS关键词 | EASTERN UNITED-STATES ; MITOCHONDRIAL-DNA ; AMERICAN SOUTHWEST ; NEOTOMA ; BIOGEOGRAPHY |
WOS类目 | Ecology ; Geography, Physical |
WOS研究方向 | Environmental Sciences & Ecology ; Physical Geography |
来源机构 | University of California, Berkeley |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/139294 |
作者单位 | (1)Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA;(2)Univ Calif Berkeley, Dept Integrat Biol, Berkeley, CA 94720 USA;(3)Univ Calif Berkeley, Museum Vertebrate Zool, Berkeley, CA 94720 USA;(4)San Joaquin Valley Endangered Species Recovery Pr, Fresno, CA 93727 USA |
推荐引用方式 GB/T 7714 | Smith, FA,Matocq, MD,Melendez, KF,et al. How isolated are Pleistocene refugia! Results from a study on a relict woodrat population from the Mojave Desert, California[J]. University of California, Berkeley,2000,27(2):483-500. |
APA | Smith, FA,Matocq, MD,Melendez, KF,Ditto, AM,&Kelly, PA.(2000).How isolated are Pleistocene refugia! Results from a study on a relict woodrat population from the Mojave Desert, California.JOURNAL OF BIOGEOGRAPHY,27(2),483-500. |
MLA | Smith, FA,et al."How isolated are Pleistocene refugia! Results from a study on a relict woodrat population from the Mojave Desert, California".JOURNAL OF BIOGEOGRAPHY 27.2(2000):483-500. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。