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Collaborative Research: Grizzly Bear Digging in Subalpine Meadows: Influences on Plant Distributions and Nitrogen Availability

Collaborative Research: Grizzly Bear Digging in Subalpine Meadows: Influences on Plant Distributions and Nitrogen Availability
合作研究：灰熊在亚高山草甸挖掘：对植物分布和氮素有效性的影响
批准号：
9510447
负责人：
John Pastor
金额：
$11.15万
依托单位：
University of Minnesota-Twin Cities
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1995
资助国家：
美国
项目状态：
已结题
起止时间：
1995-10-01 至 1999-03-31
来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9510447&HistoricalAwards=false
关键词：
CollaborativeResearchGrizzlyBearDigging

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英文摘要
9510447 Pastor Grizzly Bear Digging in Subalpine Meadows: Influences on Plant Distributions and Nitrogen Availability Grizzly bears are omnivores who often feed intensively on bulbs of plants such as glacier lilies. Foraging by bears can overturn large tracts of subalpine meadows. Preliminary observations suggest that this activity may increase nitrogen availability, seed production, bulb nitrogen, and bulb carbohydrate content. As such, these large animals may play major roles in the structure and function of subalpine plant communities. This project will rigorously test this hypothesis in areas inside and adjacent to Rocky Mountain National Park in Montana. This research will consider the role of a large omnivorous animal on the ecosystems in which they reside.
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