International Conference: The Towuti Drilling Project: Paleoenvironments, Biological Evolution, and Geomicrobiology of a Tropical Western Pacific Lake

国际会议：陶乌提钻探项目：热带西太平洋湖泊的古环境、生物进化和地球微生物学

• 批准号: 1745739
• 负责人: James Russell
• 金额: $ 2.45万
• 依托单位: Brown University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-08-15 至 2019-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1745739&HistoricalAwards=false
• 关键词: International; Conference; Towuti; Drilling; Project

The Towuti Drilling Project (TDP) is an international research program to understand long-term environmental and climatic change in the tropical western Pacific, the impacts of geological and environmental changes on the biological evolution of endemic aquatic taxa, and the geomicrobiology and geochemistry of metal-rich, ultramafic-hosted lake sediment. Lake Towuti is the largest and oldest lake in Southeast Asia, and thus holds one of the longest records of climate change anywhere in the region. The lake is home to dozens of species of endemic fish, snails, shrimp, and other organisms, and is surrounded by the most diverse rainforest on Earth. The lake is also one of the only large ferruginous (iron-rich) lakes on Earth, and hosts an exotic microbial community that is potentially analogous to the ecosystems that existed in early Earth's ferruginous oceans. In late 2015, the TDP (EAR-1401448) recovered over 1000 m of sediment drill core from the floor of Lake Towuti to reconstruct how Indo-Pacific climate and these unique ecosystems evolved during the Pleistocene epoch. This award provides support for an international workshop in Makassar, Indonesia, to synthesize results from the TDP and to plan research on the environmental history of Indonesia. Specific areas to be addressed include: 1) a new long, high-resolution record of tropical western Pacific climatic change during last ~1 million years to test the impacts of changes in global temperature, greenhouse gas concentrations, and other climate forcings on Indo-Pacific hydrology; 2) the response of Southeast Asian tropical rainforests to past climate change, including climates warmer than the present; 3) information on the age and history of the lake and the limnological conditions that gave rise to Lake Towuti's endemic fauna and flora; and 4) new insight into the microbial processes operating at depth in Towuti's sediments and their effects on sediment mineralogy and biogeochemistry.

Towuti钻探项目（TDP）是一项国际研究计划，旨在了解热带西太平洋的长期环境和气候变化，地质和环境变化对特有水生生物类群生物进化的影响，以及富含金属的超镁铁质湖泊沉积物的地质微生物学和地球化学。Towuti湖是东南亚最大和最古老的湖泊，因此拥有该地区最长的气候变化记录之一。该湖是数十种特有鱼类，蜗牛，虾和其他生物的家园，并被地球上最多样化的雨林所包围。 该湖也是地球上仅有的大型含铁（富铁）湖泊之一，并拥有一个外来微生物群落，可能类似于早期地球含铁海洋中存在的生态系统。2015年底，TDP（编号：1401448）从Towuti湖的湖底回收了超过1000米的沉积物岩芯，以重建更新世时期印度-太平洋气候和这些独特生态系统的演变。 该奖项为在印度尼西亚马卡萨尔举办的国际讲习班提供支持，以综合TDP的成果并规划对印度尼西亚环境历史的研究。研究的具体领域包括：1）近100万年来热带西太平洋气候变化的一个新的长期高分辨率记录，以测试全球温度变化、温室气体浓度和其他气候强迫对印度洋-太平洋水文的影响; 2）东南亚热带雨林对过去气候变化的响应，包括比现在更温暖的气候; 3）关于湖泊的年龄和历史以及导致托乌蒂湖特有动物群和植物群形成的湖沼学条件的信息; 4）对托乌蒂湖沉积物中深层微生物作用过程及其对沉积物矿物学和地球化学的影响的新认识。

项目成果

Formation of diagenetic siderite in modern ferruginous sediments

现代含铁沉积物中成岩菱铁矿的形成

• DOI: 10.1130/g46100.1
• 发表时间: 2019
• 期刊: Geology
• 影响因子: 5.8
• 作者: Vuillemin;Kemnitz;Schleicher;Friese;Simister;Nomosatryo;Ordoñez;Ariztegui;Benning;Kallmeyer;Russell;Bijaksana;Towuti Drilling P
• 通讯作者: Towuti Drilling P

Empowering conventional Rock-Eval pyrolysis for organic matter characterization of the siderite-rich sediments of Lake Towuti (Indonesia) using End-Member Analysis

• DOI: 10.1016/j.orggeochem.2019.05.002
• 发表时间: 2019-01
• 期刊: Organic Geochemistry
• 影响因子: 3
• 作者: Luis Ordóñez;H. Vogel;D. Sebag;D. Arizteguí;T. Adatte;J. Russell;J. Kallmeyer;A. Vuillemin;A. Friese;S. Crowe;K. Bauer;R. Simister;C. Henny;S. Nomosatryo;S. Bijaksana