MRI: Development of a Southwest Experimental Garden Array (SEGA) for Integrating Genetics and Climate Change

MRI:开发西南实验花园阵列(SEGA)以整合遗传学和气候变化

基本信息

  • 批准号:
    1126840
  • 负责人:
  • 金额:
    $ 247.91万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2011
  • 资助国家:
    美国
  • 起止时间:
    2011-10-01 至 2017-09-30
  • 项目状态:
    已结题

项目摘要

To integrate genetics and climate change research, the Southwest Experimental Garden Array (SEGA), combines reciprocal transplant and provenance trial experimental designs with state-of-the-art multi-factor climate change manipulations. This facility will allow research that scales from genes to ecosystems to test the genetic basis of plant performance along environmental gradients. This facility allows users to test the fundamental hypothesis that a genetic by environment approach is central to understanding climate change impacts on the biomes of the world, and feedbacks of these biomes to the climate system. Such studies will become essential if managed translocation strategies are adopted. The potential of this powerful experimental approach, so successfully used in agriculture, has not been realized in climate change research. It requires an integration of genetics with community ecology, ecosystem science, climatology, and land management, disciplines that have traditionally lacked a genetics perspective. The promise of this approach is demonstrated by reciprocal transplant experiments showing that locally adapted tree species are now becoming locally "maladapted" due to strong genetic interactions with the environment, which in turn affects hundreds of associated species. Using a series of 10 common gardens (5 in each of two soil types) along an elevation gradient from desert to mountain forest ecosystems, this facility provides the basis of a new generation of climate change research. For example, using reciprocal transplants of the same plant genotypes, researchers from multiple disciplines will quantify the ecological and evolutionary impacts of climate change on 1) foundation plant species that drive their respective ecosystems, 2) their associated arthropod, microbial, and understory communities that depend upon these plants for their survival, 3) native-exotic species interactions, and 4) the ecosystem processes that emerge from these interactions. This facility will enable identification of physiological mechanisms that underlie differential species and genotype performance under current and future climatic conditions. Plant performance results from the array will allow modelers to incorporate a genetic algorithm to calibrate models and to predict vegetation shifts and whole community responses to climate changes. Because the southwestern USA is experiencing some of the highest levels of climate-change impacts in North America, our garden array can serve a regional as well as a global role in addressing the gene by environment interactions that are likely to reshape biotic communities this century.This garden array will provide genetics information for scientists to make better informed predictions of the impact of climate change on individual species, communities, and ecosystems, which in turn will inform land management and restoration projects. Our array will: 1) provide a scientific basis for the concept of managed translocation, 2) identify drought tolerant genotypes and source population(s) that perform best at a given location for current and expected future climatic conditions, and 3) help develop techniques for managing invasive species that have benefited from climate change. This facility will enhance existing and new education programs and efforts to recruit and retain students from underrepresented groups in STEM fields. Under-graduates and graduate students will use these sites for their own research. Our sites at The Arboretum at Flagstaff and Wupatki National Monument will provide public outreach to 100,000 plus annual visitors. Stakeholders include 11 Research and Education Centers at NAU, USFS, NPS, TNC, USGS, BLM, Babbitt Ranches, and international collaborators. SEGA will serve as a model for proposed arrays worldwide.
为了整合遗传学和气候变化研究,西南实验花园阵列(SEGA)将互惠移植和种源试验设计与最先进的多因素气候变化操作相结合。该设施将允许从基因到生态系统的研究,以沿着环境梯度测试植物性能的遗传基础。该设施允许用户测试一个基本假设,即环境遗传方法对于理解气候变化对世界生物群落的影响以及这些生物群落对气候系统的反馈至关重要。如果采用有管理的迁移策略,这种研究将变得至关重要。这种强大的实验方法的潜力,在农业中如此成功地应用,在气候变化研究中尚未实现。它需要将遗传学与群落生态学、生态系统科学、气候学和土地管理等传统上缺乏遗传学视角的学科相结合。互惠移植实验证明了这种方法的前景,该实验表明,由于与环境的强烈遗传相互作用,当地适应的树种现在正变得在当地“不适应”,这反过来影响了数百种相关物种。沿着从沙漠到山地森林生态系统的海拔梯度,该设施使用了一系列10个普通花园(两种土壤类型各5个),为新一代气候变化研究提供了基础。例如,利用相同植物基因型的相互移植,来自多个学科的研究人员将量化气候变化对生态和进化的影响:1)驱动其各自生态系统的基础植物物种,2)依赖这些植物生存的相关节肢动物、微生物和林下群落,3)本地-外来物种相互作用,以及4)这些相互作用产生的生态系统过程。该设施将能够确定在当前和未来气候条件下不同物种和基因型表现的生理机制。来自阵列的植物性能结果将允许建模者结合遗传算法来校准模型,并预测植被变化和整个群落对气候变化的反应。由于美国西南部正在经历北美地区一些最严重的气候变化影响,我们的花园阵列可以在通过环境相互作用解决基因问题方面发挥区域和全球作用,这可能会重塑本世纪的生物群落。这个花园阵列将为科学家提供遗传学信息,以便更好地预测气候变化对单个物种、群落和生态系统的影响,这反过来将为土地管理和恢复项目提供信息。我们的阵列将:1)为管理易位的概念提供科学基础;2)确定在当前和预期的未来气候条件下在给定地点表现最佳的耐旱基因型和源种群;3)帮助开发管理从气候变化中受益的入侵物种的技术。该设施将加强现有和新的教育项目,并努力从STEM领域中代表性不足的群体中招募和留住学生。本科生和研究生将使用这些网站进行自己的研究。我们在Flagstaff的植物园和Wupatki国家纪念碑的站点将为每年10万多名游客提供公共宣传。利益相关者包括NAU、USFS、NPS、TNC、USGS、BLM、babbitranches和国际合作者的11个研究和教育中心。世嘉将作为世界范围内拟议的阵列的模型。

项目成果

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Thomas Whitham其他文献

Thomas Whitham的其他文献

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{{ truncateString('Thomas Whitham', 18)}}的其他基金

Genes to Ecosystems
基因到生态系统
  • 批准号:
    0836362
  • 财政年份:
    2009
  • 资助金额:
    $ 247.91万
  • 项目类别:
    Standard Grant
FIBR: Ecological Genomics and Heritability: Consequences of Extended Phenotypes
FIBR:生态基因组学和遗传力:扩展表型的后果
  • 批准号:
    0425908
  • 财政年份:
    2004
  • 资助金额:
    $ 247.91万
  • 项目类别:
    Standard Grant
Planning Visit to Australia for Parallel Long-Term Studies of Eucalyptus and Populus
计划访问澳大利亚对桉树和杨树进行并行长期研究
  • 批准号:
    0439125
  • 财政年份:
    2004
  • 资助金额:
    $ 247.91万
  • 项目类别:
    Standard Grant
LTREB: Rapid Ecotonal Shifts, Pest Outbreaks, and Mortality of a Dominant Tree Species in Response to Record Drought
LTREB:创纪录干旱导致的快速生态带变化、害虫爆发和主要树种的死亡
  • 批准号:
    0236204
  • 财政年份:
    2003
  • 资助金额:
    $ 247.91万
  • 项目类别:
    Continuing Grant
IRCEB: Plant Genetic Structure as a Controlling Factor in Community and Ecosystem Functioning: Studies using Natural and Synthetic Hybrids of a Dominant Riparian Tree
IRCEB:植物遗传结构作为群落和生态系统功能的控制因素:使用优势河岸树的天然和合成杂交种进行研究
  • 批准号:
    0078280
  • 财政年份:
    2000
  • 资助金额:
    $ 247.91万
  • 项目类别:
    Standard Grant
The Roles of Stress and Time in Insect Outbreaks: The Effect of a One Million-Year Successional Gradient and a 100-Year Regional Drought on the Pinyon Needle Scale
压力和时间在昆虫爆发中的作用:一百万年的演替梯度和一百年的区域干旱对松针尺度的影响
  • 批准号:
    0075563
  • 财政年份:
    2000
  • 资助金额:
    $ 247.91万
  • 项目类别:
    Standard Grant
SGER: Rapid Ecotonal Shifts in the Southwest
SGER:西南地区生态位的快速转变
  • 批准号:
    9909109
  • 财政年份:
    1999
  • 资助金额:
    $ 247.91万
  • 项目类别:
    Standard Grant
Hybrid Cottonwood-Herbivore Interactions: Integration of Biogeographic and Synthetic Population Studies
杂种杨木与草食动物的相互作用:生物地理学和综合种群研究的整合
  • 批准号:
    9726648
  • 财政年份:
    1998
  • 资助金额:
    $ 247.91万
  • 项目类别:
    Continuing Grant
LTREB: Effects of Recent Environmental Change on the Pinyon-Herbivore-Mycorrhizal Community of Sunset Crater
LTREB:近期环境变化对日落火山口松树-草食动物-菌根群落的影响
  • 批准号:
    9615313
  • 财政年份:
    1997
  • 资助金额:
    $ 247.91万
  • 项目类别:
    Continuing Grant
The Use of Cottonwood Hybrid Zones to Examine the Ecological Genetics of Plant-Herbivore Interactions and Community Structure
利用三叶杨杂交区研究植物-草食动物相互作用和群落结构的生态遗传学
  • 批准号:
    9408009
  • 财政年份:
    1994
  • 资助金额:
    $ 247.91万
  • 项目类别:
    Continuing Grant

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