Arid
DOI10.1644/09-MAMM-S-142.1
Long-term insights into the influence of precipitation on community dynamics in desert rodents
Thibault, Katherine M.1,2,3; Ernest, S. K. Morgan2,3; White, Ethan P.2,3; Brown, James H.4; Goheen, Jacob R.5
通讯作者Thibault, Katherine M.
来源期刊JOURNAL OF MAMMALOGY
ISSN0022-2372
出版年2010
卷号91期号:4页码:787-797
英文摘要

Arid systems are characterized by spatiotemporal variability in resources and, as such, make ideal systems for examining the role of resource limitation in the long-term dynamics of populations. Using 28 years of data, we examine the long-term relationships of 3 guilds of desert rodent consumers with precipitation and primary productivity in a changing environment. Lags in rodent response to precipitation increased with increasing trophic level over the entire time series, consistent with resource limitation. However, we found that consumer resource dynamics are complex and variable through time. Precipitation exhibited increasing influence on both primary producers and consumers in this system over time. Experimental evidence suggests that reorganization of community composition, coincident with environmental change, likely explains some of the increasing influence of precipitation. Additional, indirect evidence suggests some role for increasing shrub density and changing precipitation regimes. Results from our long-term study demonstrate that the global phenomena of changing precipitation regimes, increasing frequency of extreme climatic events, and shrub encroachment are likely to have strong, interactive impacts in reorganizing ecological communities, with significant consequences for ecosystem dynamics. DOI: 10.1644/09-MAMM-S-142.1.


英文关键词consumer dynamics desertification desert rodents guild precipitation resource limitation resource pulses shrub encroachment temporal dynamics
类型Article
语种英语
国家USA ; Canada
收录类别SCI-E
WOS记录号WOS:000281215100003
WOS关键词CHIHUAHUAN DESERT ; POPULATION-DYNAMICS ; RESOURCE PULSES ; SEMIARID CHILE ; DIPODOMYS-SPECTABILIS ; DENSITY-DEPENDENCE ; TEMPORAL DYNAMICS ; KANGAROO RATS ; SMALL MAMMALS ; TOP-DOWN
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/2XILL650/165352
作者单位1.Furman Univ, Dept Biol, Greenville, SC 29613 USA;
2.Utah State Univ, Dept Biol, Logan, UT 84322 USA;
3.Utah State Univ, Ctr Ecol, Logan, UT 84322 USA;
4.Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA;
5.Univ British Columbia, Dept Zool, Vancouver, BC V6T 1Z4, Canada
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GB/T 7714
Thibault, Katherine M.,Ernest, S. K. Morgan,White, Ethan P.,et al. Long-term insights into the influence of precipitation on community dynamics in desert rodents[J],2010,91(4):787-797.
APA Thibault, Katherine M.,Ernest, S. K. Morgan,White, Ethan P.,Brown, James H.,&Goheen, Jacob R..(2010).Long-term insights into the influence of precipitation on community dynamics in desert rodents.JOURNAL OF MAMMALOGY,91(4),787-797.
MLA Thibault, Katherine M.,et al."Long-term insights into the influence of precipitation on community dynamics in desert rodents".JOURNAL OF MAMMALOGY 91.4(2010):787-797.
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