Role of Predation and Plant-Small Mammal Interaction in Chilean Mediterranean Scrub Zone

智利地中海灌丛区捕食和植物-小型哺乳动物相互作用的作用

• 批准号: 8806639
• 负责人: Peter Meserve
• 金额: $ 9万
• 依托单位: Northern Illinois University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-10-15 至 1991-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8806639&HistoricalAwards=false
• 关键词: Role; Predation; Plant; Small; Mammal

Previous studies of Chilean mediterranean-type ecosystems have suggested a major role for predation, and plant-animal interactions in structuring small mammal assemblages, and in community level interactions. However, few long-term or carefully replicated field experiments have been conducted in temperate Neotropics, and such studies are needed to assess the generality of patterns elucidated largely from Northern Hemispheric communities. This research will investigate the specific effects of major predator groups on small mammals, and the evidence for significant plant-small mammal interactions in a semi-arid mediterranean community in a Chilean national park which has received considerable previous effort on small mammal population dynamics, resource partitioning patterns, predator diets, and floristic associations. Replicated fenced and/or net- covered exclosures permeable to small mammals, and small mammal- proof exclosures will be used to assess predation impace, and consumer effects, respectively, In addition to moitoring of direct effects, the evidence for changes in small mammal foraging patterns and habitat utilization will be assessed. Detectable responses to predator, and small mammal exclusion are expected to be rapid, and the proposed work will be among the first such large scale studies of these processes in temperate Neotropical small mammals.

智利地中海型生态系统的先前研究 表明捕食和动植物 在构建小型哺乳动物群落中的相互作用， 社区层面的互动。 然而，长期或 已经进行了仔细复制的田间试验， 温带新热带地区，这样的研究是需要评估的 模式的普遍性主要来自北方 半球社区。 这项研究将调查 主要捕食者群体对小型哺乳动物的具体影响， 植物与小型哺乳动物之间存在显著相互作用的证据， 智利国家公园的一个半干旱的地中海社区 之前已经在小型哺乳动物身上进行了大量的研究 种群动态，资源分配格局，捕食者 饮食和植物群。 复制围栏和/或网- 小型哺乳动物可透过的封闭空间，以及小型哺乳动物- 证据披露将用于评估捕食影响，并且 消费者的影响，分别，除了监测 直接影响，小型哺乳动物觅食变化的证据 将评估模式和生境利用情况。 可检测 对捕食者的反应，以及小型哺乳动物的排斥， 这将是第一次，而这项工作将是第一次。 对温带新热带地区这些过程的大规模研究 小型哺乳动物