Collaborative Research: Vegetation and Paleoecology of an Amazon-Andean Elevational Transect

合作研究：亚马逊-安第斯高地断面的植被和古生态学

• 批准号: 0237684
• 负责人: Miles Silman
• 金额: $ 20.79万
• 依托单位: Wake Forest University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-04-01 至 2007-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0237684&HistoricalAwards=false
• 关键词: Collaborative; Research; Vegetation; Paleoecology; Amazon

The eastern flank of the Andes supports the richest flora and fauna in the world. Climate change and forest destruction threaten these habitats. Research will be undertaken to provide the first detailed information on the composition of modern forest communities on the Andean flank of southern Peru, and how those communities change along an elevational gradient (600 m to 3000 m elevation). Simultaneously, an investigation will be made at eight sites on that gradient to determine the changes of local forest communities since the peak of the last ice age. Fossil pollen and diatoms recovered from ancient lake sediment will provide a detailed record of how lake systems and local forests responded to past sudden climatic change, such as rapid cooling events within the last ice age, and the rapid warming associated with the start of the present interglacial. Information will be provided on how forest community diversity has changed through time, and whether changes in communities were restricted to just the rare species or affected all species equally. These data will help biologists understand how high diversity floras and faunas, with a high proportion of endemic species, can survive climate change, and what will be required to conserve them.

安第斯山脉的东部侧面支持世界上最富有的动植物。气候变化和森林破坏威胁着这些栖息地。将进行研究，以提供有关秘鲁南部安第斯侧面现代森林社区组成的第一个详细信息，以及这些社区如何沿着海拔梯度（600 m至3000 m海拔）变化。同时，将在该梯度的八个地点进行调查，以确定自上次冰河时代高峰以来当地森林社区的变化。从古老的湖泊沉积物中回收的化石花粉和硅藻将提供详细的记录，了解湖泊系统和当地森林如何应对过去的突然气候变化，例如上一个冰河时代内的快速冷却事件，以及与当前冰期开始的快速变暖。将提供有关森林社区多样性如何随着时间而变化的信息，以及社区的变化是否仅限于稀有物种或平等影响所有物种。这些数据将有助于生物学家了解植物群和动物群的高度多样性，具有很高比例的地方性物种可以在气候变化中生存，以及保护它们所需的东西。