U.S.-Madagascar Dissertation Enhancement: The Ranomafana Fragments Project

美国-马达加斯加论文增强：Ranomafana 片段项目

• 批准号: 9912116
• 负责人: Bruce Patterson
• 金额: $ 1.77万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-09-01 至 2001-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9912116&HistoricalAwards=false
• 关键词: U.S.; Madagascar; Dissertation; Enhancement; Ranomafana

9912116PattersonThis dissertation enhancement grant supports a US graduate student, Mr. Alex Dehgan, working under the guidance of Dr. Bruce Patterson, MacArthur Curator of Zoology at The Field Museum, to conduct a study in Madagascar on how different lemur behaviors affect their relative persistence in forest fragments, and the resulting impact on lemur demographics. Why do some but not all species become extinct when the size of their small fragmented habitat is reduced? Behavior already has an important role in determining an animal's ability to persist in the midst of habitat fragmentation, and Dehgan theorizes that behavior will also have a significant effect on how habitat fragmentation impacts a particular species' distribution on the landscape level. He also predicts that the extent of a species' behavioral flexibility (as determined by constraints developed through the course of its evolution), and the behavioral characteristics that it possesses, are important for determining its susceptibility to extinction, which will also affect its distribution across the landscape. Madagascar's lemurs exhibit an extraordinarily diverse range of behaviors, social systems, and ecological habits within a single, evolutionarily-related unit, and they provide a unique opportunity to understand the role that behavioral constraint has on the complex social organization of a species in the midst of fragmented landscapes. Dehgan will explore the linkage between behavior and biogeography to determine how behavioral differences among lemurs affect their relative persistence in forest fragments, and he will seek to uncover the proximate mechanisms behind such distributions. The study will be conducted on 12 subsets of lemurs in fragmented rainforest habitats in and around Ranomafana National Park. Dr. B. Andriamihaja, of the Madagascar Institute for Conservation of Tropical Environments, and Professor Berthe Rakotosamimanan, of the University of Antananarivo, will provide guidance to Mr. Dehgan on this project.The expected results should provide an important link between biogeographic patterns of extinction and local ecological processes and behaviors, which will create a better understanding of the mechanisms that drive local extinction and determine animal distributions, and will be an important new contribution to fragmentation theories. This project is being jointly funded by the Division of International Programs and the Division of Environmental Biology.

9912116PattersonThis论文增强补助金支持美国研究生Alex Dehgan先生在菲尔德博物馆动物学麦克阿瑟策展人布鲁斯帕特森博士的指导下工作，在马达加斯加进行一项关于不同狐猴行为如何影响其在森林片段中的相对持久性以及对狐猴人口统计的影响的研究。 为什么当一些物种的小而分散的栖息地缩小时，它们会灭绝，而不是所有的物种？ 行为已经在决定动物在栖息地碎片化中持续生存的能力方面发挥了重要作用，Dehgan认为行为也将对栖息地碎片化如何影响特定物种在景观水平上的分布产生重大影响。 他还预测，一个物种的行为灵活性的程度（由其进化过程中形成的约束决定），以及它所拥有的行为特征，对于决定其灭绝的敏感性非常重要，这也将影响其在景观中的分布。马达加斯加狐猴在一个单一的、与进化相关的单位中表现出非常多样化的行为、社会系统和生态习惯，它们提供了一个独特的机会，让我们了解行为约束对一个物种在支离破碎的景观中复杂的社会组织所起的作用。 Dehgan将探索行为和地理学之间的联系，以确定狐猴之间的行为差异如何影响它们在森林片段中的相对持久性，他将寻求揭示这种分布背后的近似机制。 这项研究将在拉努马法纳国家公园内和周围破碎的雨林栖息地的12个狐猴亚群进行。 B医生。马达加斯加热带环境保护研究所的Andriamihaja和塔那那利佛大学的Berthe Rakotosamimanan教授将为Dehgan先生的这一项目提供指导。预期的结果将在物种灭绝的地理模式与当地生态过程和行为之间提供重要的联系，这将使我们更好地理解推动局部灭绝和决定动物分布的机制，并将是对碎片化理论的重要新贡献。 该项目由国际方案司和环境生物学司联合资助。