Insect Herbivores and Plant Succession: Interactions and Mechanisms

昆虫食草动物和植物演替：相互作用和机制

• 批准号: 8906290
• 负责人: Catherine Bach
• 金额: $ 23.76万
• 依托单位: Regents of the University of Michigan - Ann Arbor
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-09-01 至 1991-09-01
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8906290&HistoricalAwards=false
• 关键词: Insect; Herbivores; Plant; Succession; Interactions

The proposed research will investigate the effects of insect herbivory on rates and patterns of species replacement during primary plant succession on sand dunes. The research will focus on a specialist beetle, Altica bimarginata, and the willow, Salix cordata. An integrated set of field and greenhouse experiments will examine both the effects of plant successional stage on rates of herbivory and effects of herbivores on plant successional processess, as well as provide critical tests of the underlying mechanisms. To study how herbivore abundance varies between and within plant successional stages, field experiments will examine how attributes of host plants and the surrounding plant community influence herbivory. The role of genetic differences between plants in influencing rates of herbivory will be addressed with a reciprocal transplant study. Herbivore exclusion experiments will examine the role of herbivory in influencing plant successional patterns. The importance of surrounding plant neighbors in influencing succession and how herbivores affect succession will be studied with plant neighbor removal experiments. Greenhouse experiments varying the level of herbivory will examine what aspects of host plant fitness are affected by herbivory. Although herbivory is known to strongly affect plant fitness and competitive interactions, the role of herbivory in influencing plant succession has been largely ignored. By focusing on both the effects of plants on insects and the effects of insects on plants, the interactive nature of insect-plant dynamics in successional systems will be elucidated. These contributions are of central importance to insect and plant ecology, as well as understanding of communities and factors controlling species diversity.

这项拟议中的研究将调查昆虫的影响， 草食动物对物种更替率和模式的影响 沙丘上的原生植物演替。 研究将集中在 在一种特殊的甲虫上，Altica bimmartata，和杨柳上，Salix 心脏 一套完整的田间和温室实验 将研究植物演替阶段对 食草动物对植物的影响 继承过程，以及提供关键的测试， 基本机制。 为了研究食草动物的数量在不同物种之间 植物演替阶段，田间试验将研究如何 寄主植物和周围植物群落的属性 影响食草动物。 基因差异在 植物在影响率的食草动物将解决与 交互移植研究 草食动物排除实验 将研究食草动物在影响植物生长方面的作用， 演替模式 周边植物的重要性 影响演替的邻居以及食草动物如何影响 演替将与植物邻居删除进行研究 实验 温室实验改变了 食草动物将研究寄主植物适合度的哪些方面 受到食草动物的影响 虽然众所周知，食草动物强烈影响植物的适应性 和竞争的相互作用，草食动物的作用， 影响植物演替的因素在很大程度上被忽视了。 通过 重点研究植物对昆虫的影响 昆虫与植物的相互作用 将阐明演替系统的动态。 这些 对昆虫和植物的贡献至关重要 生态学，以及对社区和因素的理解 控制物种多样性。