Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/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
![]() |
ISSN | 0012-9658 |
EISSN | 1939-9170 |
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 |
推荐引用方式 GB/T 7714 | 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. |
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。