Arid
DOI10.1002/ecy.2373
Long-term community change through multiple rapid transitions in a desert rodent community
Christensen, Erica M.; Harris, David J.; Ernest, S. K. Morgan
通讯作者Christensen, Erica M.
来源期刊ECOLOGY
ISSN0012-9658
EISSN1939-9170
出版年2018
卷号99期号:7页码:1523-1529
英文摘要

While studies increasingly document long-term change in community composition, whether long-term change occurs gradually or via rapid reorganization events remains unclear. We used Latent Dirichlet Allocation (LDA) and a change-point model to examine the long-term dynamics of a desert rodent community undergoing compositional change over a 38-yr span. Our approach detected three rapid reorganization events, where changes in the relative abundances of dominant and rare species occurred, and a separate period of increased variance in the structure of the community. These events coincided with time periods, possibly related to climate events, where the total abundance of rodents was extremely low. There are a variety of processes that could link low abundance events with a higher probability of rapid ecological transitions, including higher importance of stochastic processes (i.e., competitive interactions or priority effects) and the removal of structuring effects of competitive dominants or incumbent species. Continued study of the dynamics of community change will provide important information not only on the processes structuring communities, but will also provide guidance for forecasting how communities will undergo change in the future.


英文关键词community composition community dynamics desert rodents extreme climatic events Latent Dirichlet Allocation long-term data temporal dynamics
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000436869900002
WOS关键词LATENT DIRICHLET ALLOCATION ; RECENT CLIMATE-CHANGE ; COMPETITION ; ECOSYSTEM ; DYNAMICS ; MODELS ; NICHE ; TIME ; FRAMEWORK ; INVASION
WOS类目Ecology
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/208784
作者单位Univ Florida, Dept Wildlife Ecol & Conservat, 110 Newins Ziegler Hall, Gainesville, FL 32611 USA
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Christensen, Erica M.,Harris, David J.,Ernest, S. K. Morgan. Long-term community change through multiple rapid transitions in a desert rodent community[J],2018,99(7):1523-1529.
APA Christensen, Erica M.,Harris, David J.,&Ernest, S. K. Morgan.(2018).Long-term community change through multiple rapid transitions in a desert rodent community.ECOLOGY,99(7),1523-1529.
MLA Christensen, Erica M.,et al."Long-term community change through multiple rapid transitions in a desert rodent community".ECOLOGY 99.7(2018):1523-1529.
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