Vegetation and Fire History of Deglaciation Around Lake Titicaca, Peru/Bolivia

该奖项支持对花粉和木炭进行高分辨率分析的计划，特别强调解决的的喀喀湖新仙女木时期事件的存在。迄今为止，关于一系列与欧洲和北大西洋的Bolling/Allerod和Younger Dryas相似的气候振荡的最具说服力的证据来自玻利维亚的Sajama冰芯。附近的的的喀喀湖是一个适合测试萨哈马记录的地点。的的喀喀湖是一个深湖，有古老的沉积物，但在16000到9000年前，所有以前的岩心都有一个裂缝。NE98-1PC岩芯从170米的水下隆起，包含了第一个连续的沉积序列，覆盖了过去23000年。其他合作者正在研究各种各样的代用物，而这项提议寻求资金来为这个核心提供化石花粉和木炭数据。这些数据将提供植被运动、火灾的第一个连续记录，并从玻利维亚高原推断气候变化。事实上，它们将成为赤道以南新热带地区的两三个连续沉积记录之一，这些记录可以追溯到冰川高峰时期。

AbstractThis award supports plans to conduct a fine-resolution analysis of both pollen and charcoal, placing special emphasis on resolving the presence of a Younger Dryas style event at Lake Titicaca. To date, the most convincing evidence for a set of climatic oscillations that parallel the Bolling/Allerod and Younger Dryas of Europe and North Atlantic comes from the Sajama ice core, Bolivia. A site that lends itself to testing the Sajama record is the nearby Lake Titicaca. Titicaca is an deep lake with ancient sediments, but one in which a hiatus at 16,000 to 9,000 years ago exists in all previous cores. Core NE98-1PC was raised from 170 m of water and contains the first continuous sedimentary sequence covering the last 23,000 years. Other collaborators are working on a wide array of proxies, and this proposal seeks funds to provide fossil pollen and charcoal data for this core. These data would provide the first continuous record of vegetation movement, fire, and inferred climate change from the Bolivian Altiplano. Indeed, they would become one of two or three continuous sedimentary records from the neotropics south of the equator that date to the glacial maximum.