| 项目编号: | 1501301
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| 项目名称: | DISSERTATION RESEARCH: Riverscape genetics: testing the role of river properties with population-genetic models in Neotropical freshwater fishes |
| 作者: | L. Lacey Knowles
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| 承担单位: | University of Michigan Ann Arbor
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| 批准年: | 2014
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| 开始日期: | 2015-04-01
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| 结束日期: | 2018-03-31
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| 资助金额: | USD20179
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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: | river
; river segment
; work
; riverine environment
; freshwater fish biodiversity hotspot
; freshwater fish
; specific river property
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| 英文摘要: | Genetic data can provide a window in the factors that structure and drive divergence among populations. In this study, we will use such data to reveal how current and past landscapes features determine population structure. Such inferences, however, are challenging without methodologies to predict the genetic signature under such conditions. The proposed work will be a step towards addressing this knowledge gap with an application to a freshwater fish biodiversity hotspot, the Atlantic Coastal Rainforest of Brazil. The proposed work will provide critical knowledge about freshwater fishes in this particular ecosystem, as well as be broadly applicable to riverine environments in other world regions. The project provide insights into the properties of rivers that make them critical to conservation efforts because of their impact in population persistence and movement patterns of organisms living in the rivers. The PIs will also collaborate with Brazilian students on this project, promoting international scientific engagement.
This research will use computer simulations to generate expected patterns of genetic variation so the impact of specific river properties (e.g., the length of river segments, the number of connecting tributaries, and the flow regime) on movement patterns of an endemic tetra can be discerned. Such a mechanistic understanding will be instrumental to interpreting past studies that have documented differences in genetic variation between different regions. The tests developed here will allow re-evaluation of those prior studies to determine what processes structuring biodiversity might differ among regions. As such, the work will provide a general tool that can advance our understanding of the processes generating biodiversity patterns. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/94933
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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: | |
L. Lacey Knowles. DISSERTATION RESEARCH: Riverscape genetics: testing the role of river properties with population-genetic models in Neotropical freshwater fishes. 2014-01-01.
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