Collaborative Research: Population Response to Quaternary Environmental Change: Great Basin Lagomorphs as a Case Study

合作研究：人口对第四纪环境变化的反应：以大盆地兔类动物为例

• 批准号: 0924021
• 负责人: Elizabeth Hadly
• 金额: $ 30.84万
• 依托单位: Stanford University
• 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: 2009-09-15 至 2012-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0924021&HistoricalAwards=false
• 关键词: Collaborative; Research; Population; Response; Quaternary

COLLABORATIVE RESEARCHPOPULATION RESPONSE TO QUATERNARY ENVIRONMENTAL CHANGE: GREAT BASIN LAGOMORPHS AS A CASE STUDYElizabeth A. Hadly, Department of Biology, Stanford UniversityDonald Grayson, Department of Anthropology, University of Washington________________________________________ This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5). Increase in global mean temperatures will amount to 1.1-6.4?aC by the end of this century, with US western regional changes even greater. Beyond shifting ranges, impacts to our native biota are only now beginning to be investigated. It is critical that we take on the goal of determining reliable indicators of population persistence and overall species extinction risk. One of the best ways of assessing the myriad effects of rapid environmental change on our extant fauna is to study how these same species responded to climatic events of the recent past. Recent advances in molecular genetics, stable isotope research, archaeology, paleontology, morphometrics and climatic modeling can now be combined to reveal the thresholds behind population loss from the fossils themselves, an endeavor that has not yet been attempted. Here we propose to assemble a diverse team of established and beginning investigators to ascertain factors underlying population persistence, expansion and loss from the fossil record. Within our exemplar study system, the Great Basin, we propose to use a diverse model mammalian order, the Lagomorpha, to ask whether the fossil record can help us to identify survival thresholds in potentially endangered populations of mammals. In particular, we propose to investigate the expansion and extirpation dynamics of lagomorphs over the last 15,000 years against the backdrop of changing landscapes, climates, and human populations in the region. We will use a combination of fossil occurrence and relative abundance data, archaeology, morphometrics, isotopic data, analysis of both modern and ancient genetic diversity (phylochronology), population size and connectivity to ascertain the factors associated with population dynamics of this group. By focusing across this broad and varied landscape through some 15,000 years of dramatic environmental change, we will provide a conceptual and empirical package that will allow more precise predictions of the fate of extant mammals worldwide in the face of ongoing human-caused environmental change.

合作研究人员对第四纪环境变化的反应：大盆地lagomorphs作为案例研究Elizabeth A. 到本世纪末，全球平均温度的升高将达到1.1-6.4？AC，我们西方地区的变化更大。 除了转移范围外，对我们本地生物群的影响才开始研究。 至关重要的是，我们要实现确定人口持久性和整体物种灭绝风险的可靠指标的目标。 评估快速环境变化对我们现存的动物群的无数影响的最佳方法之一是研究这些相同物种如何应对最近的气候事件。 现在可以合并分子遗传学，稳定的同位素研究，考古学，古生物学，形态学和气候建模的最新进展，以揭示化石本身的人口损失的阈值，这是一项尚未尝试的努力。 在这里，我们建议组建一个成立和开始的研究人员团队，以确定化石记录中人口持久性，扩张和损失的基础因素。 在我们的示例研究系统中，我们建议使用多种模型的哺乳动物秩序Lagomorpha询问化石记录是否可以帮助我们识别潜在濒危哺乳动物种群中的生存阈值。 特别是，我们建议在过去的15，000年中研究龙龙的扩张和消除动态，这是该地区不断变化的景观，气候和人类种群的背景。 我们将结合化石的发生与相对丰度数据，考古学，形态计量学，同位素数据，对现代和古代遗传多样性（植物学多样性）的分析，人口规模和连通性，以确定与该组人口动态相关的因素。 通过在大约15，000年的巨大环境变化中关注这一广阔而多样的景观，我们将提供一个概念和经验的包装，将在面对正在进行的人为造成的环境变化的情况下，对全球现存的哺乳动物的命运进行更精确的预测。