Dissertation Research: Changes in Performance Ranking of Seedlings of Coexisting Tree Species Under Different Combi- nations of Light, Mineral Nutrients and Soil Moisture

论文研究：不同光照、矿质养分和土壤湿度组合下共存树种幼苗表现排名的变化

• 批准号: 8701115
• 负责人: Brenda Casper
• 金额: $ 0.5万
• 依托单位: University of Pennsylvania
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-06-15 至 1988-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8701115&HistoricalAwards=false
• 关键词: Dissertation; Research; Changes; Performance; Ranking

This is a proposal by Dr. Brenda Casper and her graduate student Mr. Roger Latham of the University of Pennsylvania, Philadelphia. They postulate that differences among tree species in their resource requirements as seedlings may not be responsible for species coexistence in humid temperate forests. The research proposed presents a well reasoned and tightly oraganized plan to evaluate species differences in seedling response to different resources. They will provide a comprehensive analysis of the response to resources of several interacting tree species. Even though limited to seedlings, they will be in a good position to evaluate the possibility of the general hypothesis referred to above, a definite empirical advance from the present situation, as we have many more ideas than data on the questions they address. The context is well developed, and brings together some ideas and results from population ecology, physiological ecology and ecosystem ecology. This integrative approach is much needed and the pilot studies demonstrate that the proposed work will be a good investment. Results will be of importance to forestry and forest management. Dr. Brenda Casper is gaining in stature in this area of ecology as attested by an enthusiastic reception for her most recent publications. The University of Pennsylvania is well equipped to pursue this work to a successful completion. The program recommends funding.

这是布伦达·卡斯珀博士和她的毕业生 宾夕法尼亚大学的学生罗杰莱瑟姆先生， 费城 他们假设，不同树种之间的差异 资源需求，因为幼苗可能不负责 在潮湿的温带森林中物种共存。研究 提出了一个合理的和严密的组织计划， 评估不同品种对不同品种的幼苗反应差异 资源 他们将提供全面的分析， 几个相互作用的树种的资源。 甚至 虽然仅限于幼苗，但它们将处于有利位置， 评估所提到的一般假设的可能性 以上，从目前的情况来看，一个明确的经验进步， 因为我们有更多的想法比数据的问题， 地址. 背景是发达的，并汇集了一些 从种群生态学、生理生态学、 生态系统生态学。 这种综合办法是非常必要的 试点研究表明，拟议的工作将 一个很好的投资。结果将对林业和 森林管理 布伦达卡斯珀博士在这一领域的地位越来越高， 生态，因为她最热情的接待证明了这一点 最近的出版物。 宾夕法尼亚大学很好 有能力圆满完成这项工作。 的 方案建议融资。