课题基金 / 基金详情

GRGC: Climatic and Ecologic Changes in the Late Pleistocene and their Role in Megafaunal Extinction

GRGC: Climatic and Ecologic Changes in the Late Pleistocene and their Role in Megafaunal Extinction
GRGC：更新世晚期的气候和生态变化及其在巨型动物灭绝中的作用
批准号：
9316371
负责人：
Paul Koch
金额：
$15.41万
依托单位：
Princeton University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1994
资助国家：
美国
项目状态：
已结题
起止时间：
1994-03-15 至 1997-08-31
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9316371&HistoricalAwards=false
关键词：
GRGCClimaticEcologicChangesLate

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中文摘要
翻译
小行星9316371 PI将研究更新世晚期大型哺乳动物灭绝的潜在原因，特别是测试大型食草动物（如乳齿象）的特殊饮食要求，由于变暖和季节性增加引起的快速植物群落重组而无法满足。 牙釉质的碳同位素组成将提供一个轴，区分饮食专业化和饮食的灵活性。 锶同位素的试点研究将提供季节性迁移模式的监测。 氧同位素将作为温度代用指标进行测量。
英文摘要
9316371 Koch PI will examine potential causes for large-mammal extinctions in the late Pleistocene, specifically testing the hypothesis that large herbivores, such as mastodonts, had specialized dietary requirements that could not be met due to rapid floral community reorganization spurred by warming and increased seasonality. Carbon isotope composition of tooth enamel will provide an axis for distinguishing dietary specialization from dietary flexibility. A pilot study of Sr isotopes will provide a monitor of seasonal migration patterns. Oxygen isotopes will be measured as temperature proxies.
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  • 批准号：
    1142108
  • 项目类别：
    Standard Grant
  • 资助金额：
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  • 财政年份：
    2012
  • 负责人：
    Paul Koch
  • 依托单位：
    University of California-Santa Cruz
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  • 项目类别：
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  • 资助金额：
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  • 财政年份：
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  • 负责人：
    Paul Koch
  • 依托单位：
    University of California-Santa Cruz
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