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LTREB: Adding the Temporal Component to our Understanding of Species Diversity in a Spatially Heterogeneous and Invaded Grassland System

LTREB：将时间成分添加到我们对空间异质和入侵草原系统中物种多样性的理解中

基本信息

批准号：
0515914
负责人：
Susan Harrison
金额：
$ 29.24万
依托单位：
University of California-Davis
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2005
资助国家：
美国
起止时间：
2005-09-01 至 2010-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0515914&HistoricalAwards=false
关键词：
LTREB Adding Temporal Component our

项目摘要

My project aims to understand how the diversity and composition of grasslands changes from year to year with changes in rainfall and other environmental conditions. In particular, I would like to know whether years that are unfavorable for the majority of species, such as drier than average years, are predictably beneficial to a certain minority of species. For example, species that are poor competitors, but that are drought-tolerant, may benefit more from the reduction in competition with other species in a dry year than they are directly disadvantaged by the dry conditions. To the extent that this is true, then yearly variation in conditions contributes to the total diversity of a community, and this relationship is particularly important to understand given the recent anthropogenic increase in climatic variability and climatic extremes. The sites and data from this study will be made freely available to other researchers through several avenues. The study will support and train several personnel; my laboratory has an excellent record of training women and minorities as graduate students and post-doctoral researchers. The students employed by this project will contribute to environmental education programs at the McLaughlin UC Natural Reserve, which serves a community with many lower-income and minority students.

我的项目旨在了解草原的多样性和组成是如何随着降雨量和其他环境条件的变化而逐年变化的。特别是，我想知道对大多数物种不利的年份，例如比平均干旱的年份，是否可以预见对某些少数物种有利。例如，在干旱年份减少与其他物种的竞争，可能会比直接受到干旱条件的不利影响更多地受益于那些竞争能力较差但耐旱性较强的物种。如果这是真的，那么条件的年度变化有助于群落的总多样性，考虑到最近气候变异性和气候极端的人为增加，了解这种关系特别重要。这项研究的网站和数据将通过几种途径免费提供给其他研究人员。这项研究将支持和培训几名人员；我的实验室在培训妇女和少数民族研究生和博士后研究人员方面有着出色的记录。该项目雇用的学生将为麦克劳克林加州大学自然保护区的环境教育项目做出贡献，该保护区服务于一个有许多低收入和少数族裔学生的社区。