Collaborative Research: Interacting Effects of Insect Herbivory and Rodent Granivory on Plant Population Dynamics

合作研究：昆虫食草和啮齿动物谷食对植物种群动态的相互作用影响

• 批准号: 9727548
• 负责人: Ellen Simms
• 金额: $ 3.99万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-03-01 至 1999-04-12
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9727548&HistoricalAwards=false
• 关键词: Collaborative; Research; Interacting; Effects; Insect

9727548 Simms In this collaborative research project the investigators address a central question in ecology, to what extent do consumers control plant population dynamics? Their field study is directed at determining the conditions under which insect and mice consumers alter population dynamics of a shrub. The project will include three separate manipulative field experiments in grasslands and sand dunes. First, the density of insect herbivores and rodent granivores will be manipulated in separate plots planted with the target plant. The second experiment will include plots with different numbers of lupine seeds to determine how seed bank size affects recruitment of the target plant. The third experiment will manipulate plant density and below ground insect herbivory to determine whether competition affects plant tolerance or resistance to herbivory.

9727548 Simms在这个合作研究项目中，研究人员解决了生态学中的一个核心问题，消费者在多大程度上控制植物种群动态？ 他们的实地研究旨在确定昆虫和老鼠消费者改变灌木种群动态的条件。 该项目将包括在草地和沙丘上进行的三个独立的操纵性实地实验。首先，将在种植有目标植物的单独地块中操纵昆虫食草动物和啮齿动物食草动物的密度。 第二个实验将包括具有不同数量的羽扇豆种子的地块，以确定种子库大小如何影响目标植物的补充。第三个实验将操纵植物密度和地下昆虫植食性，以确定竞争是否影响植物耐受性或对植食性的抗性。