Collaborative Research: How Mountains Maintain Biodiversity: A Multidisciplinary Characterization of a Pleistocene Refugium in the Interior Pacific Northwest

合作研究:山脉如何维持生物多样性:太平洋西北内陆更新世避难所的多学科特征

基本信息

  • 批准号:
    1145636
  • 负责人:
  • 金额:
    $ 18.84万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    2012
  • 资助国家:
    美国
  • 起止时间:
    2012-05-01 至 2016-04-30
  • 项目状态:
    已结题

项目摘要

Understanding the responses of species to historical climate shifts can inform predictions of the future impacts of climate change on ecosystems. Mountains contain a wide range of habitats and diverse species, which have been shaped by a history of major climate changes since the last ice age. These changes have resulted in rapid and major changes in vegetation such as shifts from tundra to forest. Mountainous regions are also thought to harbor biodiversity in refugia during otherwise inhospitable climate periods. This project will characterize an ice-age refugium in steep terrain in northern Idaho that may have harbored a wide diversity of plant and animal species, and thus illuminate how mountainous terrain may buffer populations through major climate changes. Focusing on two dominant tree species in northern conifer forests (western redcedar and mountain hemlock), this project will integrate three methodological approaches to leverage their strengths in inferring past population sizes and locations. First, cutting-edge DNA-sequencing methods will reveal the genetic footprints of species' migration pathways and test for the existence of refugia. Second, new paleoecological records of pollen and macrofossils will reveal the regional plant species composition and climate during the coldest periods in the past 50,000 years. Third, simulations of historical climate across the complex mountain landscape will be combined with information on the physiological tolerances of each species (e.g., cold hardiness), to reveal the most likely locations of refugia within this region. The interdisciplinary approach of this project provides an opportunity to train the next generation of biogeographers, who will need these traditionally distinct skill sets in genetics, paleontology, and landscape modeling to forecast ecological impacts of future climate change. Graduate students will rotate among genetics, paleoecology and landscape ecology labs to achieve this training goal. In addition, a curriculum workshop will be conducted for high school teachers, and used to develop lessons for hands-on activities.
了解物种对历史气候变化的反应可以为预测气候变化对生态系统的未来影响提供信息。 山脉拥有广泛的栖息地和多样化的物种,这些栖息地是由上一个冰河时代以来的重大气候变化历史塑造的。 这些变化导致植被发生快速而重大的变化,例如从苔原到森林的转变。 人们还认为,在气候恶劣的时期,山区的保护区也蕴藏着生物多样性。 该项目将描述爱达荷州北部陡峭地形中的一个冰河时代避难所的特征,该避难所可能拥有多种植物和动物物种,从而阐明山区地形如何在重大气候变化中缓冲人口。 该项目以北部针叶林的两种主要树种(西部红杉和山铁杉)为重点,将整合三种方法,利用它们的优势来推断过去的种群规模和位置。 首先,尖端的 DNA 测序方法将揭示物种迁徙路径的遗传足迹并测试栖息地的存在。 其次,新的花粉和宏观化石古生态记录将揭示过去5万年最冷时期的区域植物物种组成和气候。 第三,对复杂山地景观历史气候的模拟将与每个物种的生理耐受性信息(例如耐寒性)相结合,以揭示该地区最有可能的避难所位置。该项目的跨学科方法为培训下一代生物地理学家提供了机会,他们将需要遗传学、古生物学和景观建模方面传统上独特的技能组合来预测未来气候变化的生态影响。 研究生将在遗传学、古生态学和景观生态学实验室之间轮换,以实现这一培训目标。 此外,还将为高中教师举办课程讲习班,并用于开发实践活动课程。

项目成果

期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Climate and vegetation since the Last Interglacial (MIS 5e) in a putative glacial refugium, northern Idaho, USA
美国爱达荷州北部假定的冰川保护区自末次间冰期 (MIS 5e) 以来的气候和植被
  • DOI:
    10.1016/j.quascirev.2015.03.028
  • 发表时间:
    2015
  • 期刊:
  • 影响因子:
    4
  • 作者:
    Herring, Erin M.;Gavin, Daniel G.
  • 通讯作者:
    Gavin, Daniel G.
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Daniel Gavin其他文献

Daniel Gavin的其他文献

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{{ truncateString('Daniel Gavin', 18)}}的其他基金

Holocene Fire History and the Vulnerability of a Primary Rainforest to Fire Encroachment
全新世火灾历史和原始雨林对火灾侵袭的脆弱性
  • 批准号:
    1561099
  • 财政年份:
    2016
  • 资助金额:
    $ 18.84万
  • 项目类别:
    Standard Grant
Doctoral Dissertation Research: Interactions Among Forest Defoliator Outbreaks, Wildfires, Climatic Variability, and Nitrogen Availability in the Interior Pacific Northwest
博士论文研究:西北内陆地区森林落叶虫爆发、野火、气候变化和氮可用性之间的相互作用
  • 批准号:
    1233278
  • 财政年份:
    2012
  • 资助金额:
    $ 18.84万
  • 项目类别:
    Standard Grant

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Research on the Rapid Growth Mechanism of KDP Crystal
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