Dissertation Research: Mechanisms of Plant Succession in Coastal Lake Michigan Sand Dunes

论文研究：密歇根湖沿岸沙丘植物演替机制

• 批准号: 9310785
• 负责人: David Tilman
• 金额: $ 0.6万
• 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: 1993
• 资助国家: 美国
• 起止时间: 1993-07-15 至 1995-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9310785&HistoricalAwards=false
• 关键词: Dissertation; Research; Mechanisms; Plant; Succession

9310785 Tilman This study combines theory, observation, experiments, and paleoecology methods in a comprehensive and mechanistic investigation of plant succession in coastal Lake Michigan sand dunes. Experiments will distinguish among potential environmental constraints limiting the distribution and abundance of plant species along a complex gradient. The influence of water stress, competition for water, nitrogen stress, competition for nitrogen, competition for light, colonization constraints, sand burial, and herbivory on seedling survival will be tested for six dominant species in a seedling transplant experiment. %%% Knowledge derived from this research will determine the importance of various constraints and tradeoffs during succession. The study site is ideally suited for this research, and the attempt to address the relative effects of several environmental factors is a unique aspect of this project. ***

小行星9310785 本研究结合理论、观测、实验和古生态学方法，对密歇根湖沿岸沙丘植物演替进行了全面的机制研究。实验将区分潜在的环境限制，限制分布和丰富的植物物种沿着一个复杂的梯度。水分胁迫的影响， 将在幼苗移植实验中测试六个优势物种对水分的竞争、氮胁迫、氮的竞争、光的竞争、定殖限制、沙埋和植食物对幼苗存活的影响。 从这项研究中获得的知识将确定继承过程中各种约束和权衡的重要性。研究地点非常适合这项研究，试图解决几个环境因素的相对影响是这个项目的一个独特方面。 ***