| 项目编号: | 1457652
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| 项目名称: | Collaborative Research: Species Interactions in Range Dynamics and Changing Environments: Stochastic Models and Experiments |
| 作者: | Alan Hastings
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| 承担单位: | University of California-Davis
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| 批准年: | 2014
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| 开始日期: | 2015-07-15
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| 结束日期: | 2020-06-30
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| 资助金额: | USD502000
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| 资助来源: | US-NSF
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| 项目类别: | Standard Grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Biological Sciences - Environmental Biology
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| 英文关键词: | invasive species
; species
; competitor species
; species interaction
; stochasticity
; species range
; range expansion
; single species
; range dynamics
; model species
; species invasion
; microcosm experiment
; resident species
; other environmental change
; flour beetle model system
; stochasticity set species
; stationary heterogeneous environment
; research project
; stochastic model
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| 英文摘要: | The spread of an invasive species is a poorly understood ecological phenomenon, yet it is of great practical importance causing an estimated $120 billion in damages per year. Current theory largely considers the situation of a single species invading into a stable habitat. Those models are inadequate to address the realistic situation of invasive species interacting with competitor species as the invasion front moves across the landscape. They also do not incorporate the fact that habitats themselves can shift on the landscape as a result of climatic and other environmental changes. For example, rapid movement of habitats toward the poles and higher elevations is a contemporary, global phenomenon. This research project will develop new theory, backed by experiments with model species in the laboratory, to explain how species invasions are shaped by the presence of competitor species, and the situation of habitats shifting on the landscape. This work will advance ecological science by providing a stronger theoretical basis for projections of species range shifts driven by invasive species and climate, and provide models useful to land managers, public health officials, and conservation biologists concerned with the spread of invasive species. This project will provide hands on training and experience to biologists from undergraduate students to postdoctoral scholars, enabling them to become the leaders of the next generation of scientists tackling complex problems in biology.
Important new phenomena for range dynamics emerge when two or more species are considered, and especially given that at the edge of any species range, densities are low, stochasticity must play an important role. Stochastic models will be developed together with highly replicated, microcosm experiments using a flour beetle model system. The research will determine 1) how interactions with a resident species modify the range expansion of an invader and its effect on the resident; 2) how species interactions and stochasticity set species ranges in stationary heterogeneous environments; and 3) how species interactions, stochasticity, and moving environments set species ranges and alter spatial community structure. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/93988
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Alan Hastings. Collaborative Research: Species Interactions in Range Dynamics and Changing Environments: Stochastic Models and Experiments. 2014-01-01.
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