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DISSERTATION RESEARCH: Phylogenetic approaches to functional diversity of mycorrhizal fungi: linking environmental change to ecosystem function

论文研究：菌根真菌功能多样性的系统发育方法：将环境变化与生态系统功能联系起来

基本信息

批准号：
0910374
负责人：
Brendan Bohannan
金额：
$ 1.5万
依托单位：
University of Oregon Eugene
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：
2009-06-01 至 2012-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=0910374&HistoricalAwards=false
关键词：
DISSERTATION RESEARCH Phylogenetic approaches functional

项目摘要

Human activities have resulted in reduced biodiversity, which can lead to altered ecosystem functions. These changes in ecosystem function are likely mediated by changes in functional diversity, the number of functionally different types of organisms. Because microbes control most biochemical cycles and largely determine ecosystem responses to environmental changes, quantifying microbial functional diversity is critical to predicting the responses of ecosystems to global change. This study will test the general hypothesis that global change results in altered ecosystem function and reduced biodiversity. Specifically, the relationships among nitrogen deposition (a component of global change), soil carbon storage (an ecosystem function) and the functional diversity of arbuscular mycorrhizal fungi (symbiotic fungi associated with the roots of numerous plant species) will be examined using novel phylogenetic and molecular approaches. This study will provide insights into how changes in nutrient inputs and biodiversity will affect ecosystem function, and it will generate novel information that has applications within the fields of agriculture, conservation biology and restoration ecology. By linking nutrient inputs, microbial functional diversity and ecosystem function, the results of this study can be utilized to make informed decisions regarding remediation of the negative effects of human activities on biodiversity and ecosystem function.

人类活动导致生物多样性减少，这可能导致生态系统功能的改变。生态系统功能的这些变化很可能是由功能多样性的变化介导的，即功能不同的生物类型的数量。由于微生物控制着大多数生物化学循环，并在很大程度上决定了生态系统对环境变化的响应，因此量化微生物功能多样性对于预测生态系统对全球变化的响应至关重要。本研究将检验全球变化导致生态系统功能改变和生物多样性减少的一般假设。具体来说，氮沉积（全球变化的一个组成部分）、土壤碳储存（一种生态系统功能）和丛枝菌根真菌（与许多植物物种的根相关的共生真菌）的功能多样性之间的关系将使用新的系统发育和分子方法进行研究。该研究将提供养分投入和生物多样性变化如何影响生态系统功能的见解，并将产生在农业、保护生物学和恢复生态学领域具有应用价值的新信息。通过将养分投入、微生物功能多样性和生态系统功能联系起来，本研究结果可用于对人类活动对生物多样性和生态系统功能的负面影响作出明智的补救决策。