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Dissertation Research: Regional trophic diversity dynamics in North American Eocene mammals

论文研究：北美始新世哺乳动物的区域营养多样性动态

基本信息

批准号：
1011474
负责人：
Anthony Barnosky
金额：
$ 0.8万
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：
2010
资助国家：
美国
起止时间：
2010-07-01 至 2013-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1011474&HistoricalAwards=false
关键词：
Dissertation Research Regional trophic diversity

项目摘要

Due largely to climate change and changes in land use, at least 20% of the mammal species living today are threatened with extinction. The fossil record is a key source of information about how species responded to environmental change in the past. Fossil material from carnivorous mammals in southern California, dating to the Eocene and Oligocene epochs (56 - 23 million years ago), will be examined to learn more about the ecology of those species and how they may have been impacted by a changing environment. This material also will be compared to records from central Oregon to examine patterns of change in regional mammalian diversity at a time when there was a dramatic loss in flowering plant diversity. Together, these analyses will provide insights into the timing and magnitude of changes in mammalian diversity, and how the extent and timing of this loss of diversity compared for carnivorous and non-carnivorous mammals. To encourage more dialogues between paleontologists and conservation biologists, and to promote the irreplaceable value of paleontological collections in biodiversity research, the findings of this study will be disseminated through professional scientific meetings, undergraduate-level college courses, and museum tours and lectures for schoolchildren and the general public.

主要由于气候变化和土地利用的变化，目前至少有20%的哺乳动物物种面临灭绝的威胁。化石记录是了解物种如何应对过去环境变化的关键信息来源。来自加州南部的食肉哺乳动物的化石材料，可以追溯到始新世和渐新世时期（5600万至2300万年前），将被检查，以了解更多关于这些物种的生态以及它们如何受到不断变化的环境的影响。这些材料也将与来自俄勒冈州中部的记录进行比较，以研究在开花植物多样性急剧丧失的时候，区域哺乳动物多样性的变化模式。总之，这些分析将提供深入了解哺乳动物多样性变化的时间和幅度，以及肉食性和非肉食性哺乳动物的多样性损失的程度和时间。为了鼓励古生物学家和保护生物学家之间进行更多的对话，并促进古生物收藏品在生物多样性研究中不可替代的价值，这项研究的结果将通过专业科学会议、大学本科课程、博物馆图尔斯参观和面向中小学生和公众的讲座进行传播。