Collaborative Research: Testing Community Theories with Environment by Species-traits Correlations: A Comparative and Experimental Approach in Ponds

合作研究：通过物种性状相关性测试群落理论与环境：池塘的比较和实验方法

• 批准号: 9816192
• 负责人: Val Smith
• 金额: $ 3.01万
• 依托单位: University of Kansas Center for Research Inc
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1999
• 资助国家: 美国
• 起止时间: 1999-05-15 至 2002-04-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9816192&HistoricalAwards=false
• 关键词: Collaborative; Research; Testing; Community; Theories

Leibold & SmithDEB-9815799 & 9816192Multiple ecological factors influence the dynamics of populations, the structure of communities and the functioning of ecosystems. One mechanism to evaluate the multiple levels that influence the distribution of species among sites is to focus on the relationship between environmental gradients and the traits of species that occupy different sites along gradients. This project would use this approach by testing the predictions of a set of mechanistic models by combining experimental approaches and recently developed statistical methods, the 4th corner technique. It will conduct long-term experiments in mesocosms that manipulate nutrients, light and trophic structure to investigate how ecological, morphological and stoichiometric traits are correlated with these factors. Information will be collected to relate patterns in 4th corner matrices directly to the predictions and assumptions of two major alternative hypotheses for the regulation of aquatic food webs in ponds.

Leibold SmithDEB-9815799 9816192多种生态因素影响种群动态、群落结构和生态系统功能。 评估影响物种在不同地点分布的多个水平的一种机制是关注环境梯度与沿着梯度占据不同地点的物种特征之间的关系。 该项目将使用这种方法，通过结合实验方法和最近开发的统计方法（第四角技术）来测试一组机械模型的预测。 它将在围隔生态系统中进行长期实验，操纵营养物质、光照和营养结构，以调查生态、形态和化学计量特征如何与这些因素相关联。 信息将被收集到相关的模式，直接在第四个角落矩阵的预测和假设的两个主要的替代假说的调节池塘中的水生食物网。