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.

安第斯山脉东侧拥有世界上最丰富的动植物群。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山翼现代森林群落组成的第一批详细信息，以及这些群落如何沿海拔梯度（600 m 至 3000 m 海拔）变化。同时，还将对该梯度上的八个地点进行调查，以确定自上一个冰河时代高峰以来当地森林群落的变化。从古代湖泊沉积物中回收的化石花粉和硅藻将提供湖泊系统和当地森林如何应对过去突然的气候变化的详细记录，例如上一个冰河时期的快速变冷事件，以及与当前间冰期开始相关的快速变暖。将提供有关森林群落多样性如何随时间变化的信息，以及群落的变化是否仅限于稀有物种或平等地影响所有物种。这些数据将帮助生物学家了解具有高比例特有物种的高度多样性动植物群如何能够在气候变化中生存，以及需要采取什么措施来保护它们。