Research Starter Grant - Causes and Consequences of Biocomplexity

研究启动补助金 - 生物复杂性的原因和后果

• 批准号: 0915173
• 负责人: Stephanie Carlson
• 金额: $ 5万
• 依托单位: University of California-Berkeley
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-08-01 至 2010-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0915173&HistoricalAwards=false
• 关键词: Research; Starter; Grant; Causes; Consequences

Pacific salmon are renowned for the great diversity of life histories and morphologies among populations. This diversity is the product of the combination of natal homing, which leads to reproductively isolated populations, and spatially varying selection pressures. Divergent natural selection acting on heritable phenotypic traits then drives adaptation to local conditions and, ultimately, population differentiation. Diversity among salmon stocks is important for the long-term sustainability of salmon fisheries because the relative contribution to total production of a fishery shifts depending on the prevailing environmental conditions. The overall goal of the PI?s research program is to illuminate the causes and consequences of diversity among salmon stocks. This research three components. First is in depth exploration of the ecological and evolutionary causes of diversity among current populations of coho salmon. The second component is a study of the consequences of population homogenization (i.e., diversity loss) by focusing on California's recently collapsed Chinook salmon. Finally, a theoretical component will focus on advancing methods for analyzing selection. The research starter award will help to launch this research program.The results of this research will have direct implications for the management and conservation of Pacific salmon. In the United States, 28 Evolutionary Significant Units of Pacific salmonids are currently listed as threatened or endangered. Ten of these units are found, either wholly or in part, in California. Explicit consideration of the evolutionary challenges facing these organisms should result in more effective management and conservation efforts. The PI is making a strong effort to engage members of underrepresented groups in her research program.

太平洋鲑鱼是著名的生活史和形态种群之间的巨大多样性。这种多样性是纳塔尔归巢，导致生殖隔离的人口，空间变化的选择压力的组合的产物。不同的自然选择作用于可遗传的表型性状，然后驱动对当地条件的适应，并最终导致种群分化。 鲑鱼种群的多样性对鲑鱼渔业的长期可持续性很重要，因为对渔业总产量的相对贡献取决于当时的环境条件。PI的总体目标是什么？的研究计划是阐明鲑鱼种群多样性的原因和后果。本研究由三部分组成。首先是深入探索目前银鲑种群多样性的生态和进化原因。第二个组成部分是研究人口同质化的后果（即，物种多样性丧失），方法是关注加州最近灭绝的奇努克鲑鱼。最后，理论部分将侧重于分析选择的先进方法。研究启动奖将有助于启动这项研究计划。这项研究的结果将对太平洋鲑鱼的管理和保护产生直接影响。在美国，有28种太平洋鲑科动物被列为濒危物种。其中10个单位被发现，全部或部分，在加州。明确考虑这些生物面临的进化挑战，应导致更有效的管理和保护工作。PI正在努力让代表性不足的群体参与她的研究计划。