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Climate history of the Indo-Pacific region and subsurface biosphere of Lake Towuti: The Swiss contribution to the ICDP Towuti Drilling Project (drilling part)

English title Climate history of the Indo-Pacific region and subsurface biosphere of Lake Towuti: The Swiss contribution to the ICDP Towuti Drilling Project (drilling part)
Applicant Vogel Hendrik
Number 153054
Funding scheme Research Infrastructure
Research institution Institut für Geologie Universität Bern
Institution of higher education University of Berne - BE
Main discipline Geology
Start/End 01.06.2014 - 31.05.2017
Approved amount 200'000.00
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All Disciplines (2)

Discipline
Geology
Biochemistry

Keywords (7)

Scientific Drilling; Lake sediments; Paleoenvironment; Indonesia; Paleoclimate; Int. Continental Scientific Drilling Progr. (ICDP); Subsurface Biosphere

Lay Summary (German)

Lead
Die Tropen spielen eine entscheidende Rolle im Klimasystem der Erde. Die klimawirksamen Prozesse und Mechanismen dieser Regionen sind aufgrund ihrer Komplexität allerdings noch nicht hinreichend verstanden. Für ein besseres Verständnis sind lange, mehrere Klimazyklen umfassende, Klimazeitreihen notwendig. Seesedimente eignen sich, aufgrund der Kontinuität ihrer Ablagerung und der oftmals hohen zeitlichen Auflösung, hervorragend als natürliche Klimaarchive. Der Towutisee (2.5°S, 121°E) auf der Insel Sulawesi in Zentralindonesien stellt ein solches hervorragendes natürliches Klimaarchiv für die letzten ~800,000 Jahre dar. Die Entschlüsselung dieses einzigartigen Klimaarchivs ist der Kern dieses Arbeit.
Lay summary

Titel Dokument

Inhalt und Ziel des Forschungsprojekts

Die übergeordneten Ziele unserer Arbeit sind:

  1. Abteufung einer Tiefbohrung am Towutisee, Indonesien;
  2. Rekonstruktion der Hydroklimageschichte der letzten ~800,000 Jahre mit Hilfe von sedimentologischen, geochemischen und mineralogischen Analysemethoden;
  3. Exploration der lakustrinen Biosphäre in tiefen Sedimentschichten;
  4. Charakterisierung der Frühstadien des Sees, die Ursuppe für die heutige Biodiversität und der einzigartigen Artenvergesellschaftung in dem See.

Wissenschaftlicher und gesellschaftlicher Kontext des Forschungsprojekts

Unsere Arbeit wird Aufschluss über wichtige Prozesse und Mechanismen im globalen Klimasystem und damit eine wichtige Grundlage für verbesserte Vorhersagen des zukünftigen Klimas liefern. Damit leistet die Arbeit einen wichtigen Beitrag für die Entscheidungsfindung von Politikerinnen und Politikern für die Definition von Klimaschutzzielen und Klimaadaptionsstrategien. Darüberhinaus wird das Projekt wichtige Erkenntnisse über mikrobiell induzierte Stoffkreisläufe in einem schwefelarmen und eisendominierten System liefern und damit Aufschluss geben über mögliche Prozesse, welche während der Frühstadien unseres Planeten und dem Mars auftraten.


Direct link to Lay Summary Last update: 10.04.2014

Responsible applicant and co-applicants

Publications

Publication
Scientific drilling projects in ancient lakes: Integrating geological and biological histories
Wilke Thomas, Wagner Bernd, Van Bocxlaer Bert, Albrecht Christian, Ariztegui Daniel, Delicado Diana, Francke Alexander, Harzhauser Mathias, Hauffe Torsten, Holtvoeth Jens, Just Janna, Leng Melanie J., Levkov Zlatko, Penkman Kirsty, Sadori Laura, Skinner Alister, Stelbrink Bj?rn, Vogel Hendrik, Wesselingh Frank, Wonik Thomas (2016), Scientific drilling projects in ancient lakes: Integrating geological and biological histories, in Global and Planetary Change, 143, 118-151.
The Towuti Drilling Project: paleoenvironments, biological evolution, and geomicrobiology of a tropical Pacific lake
Russell James M., Bijaksana Satria, Vogel Hendrik, Melles Martin, Kallmeyer Jens, Ariztegui Daniel, Crowe Sean, Fajar Silvia, Hafidz Abdul, Haffner Doug, Hasberg Ascelina, Ivory Sarah, Kelly Christopher, King John, Kirana Kartika, Morlock Marina, Noren Anders, O&apos, Grady Ryan, Ordonez Luis, Stevenson Janelle, von Rintelen Thomas, Vuillemin Aurele, Watkinson Ian, Wattrus Nigel, et al. (2016), The Towuti Drilling Project: paleoenvironments, biological evolution, and geomicrobiology of a tropical Pacific lake, in Scientific Drilling, 21, 29-40.
Depositional modes and lake-level variability at Lake Towuti, Indonesia, during the past ~29?kyr BP
Vogel Hendrik, Russell James M., Cahyarini Sri Yudawati, Bijaksana Satria, Wattrus Nigel, Rethemeyer Janet, Melles Martin (2015), Depositional modes and lake-level variability at Lake Towuti, Indonesia, during the past ~29?kyr BP, in Journal of Paleolimnology, 54(4), 359-377.

Collaboration

Group / person Country
Types of collaboration
Martin Melles/U. Cologne Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
John King/U. Rhode Island United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Ristiyanti Marwoto/LIPI - Centre for Biology Indonesia (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Nigel Wattrus/LLO, U. Minnesota United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Sean Crowe/U. British Columbia Canada (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Ian Watkinson/U. London Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Satria Bijaksana/Institut Teknologi Bandung Indonesia (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Janelle Stevenson/ANU Australia (Oceania)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Thomas v. Rintelen/Museum f. Naturkunde Berlin Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
James Russell/U. Brown United States of America (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Douglas Haffner/U. Windsor Canada (North America)
- in-depth/constructive exchanges on approaches, methods or results
- Research Infrastructure

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
TDP Workshop 2017 Poster Potential of sequentially extracted Fe as a proxy of paleo redox conditions and indicator of bio-geochemical cycling in Lake Towuti (Indonesia) 08.06.2017 Bandung, Indonesia Ariztegui Daniel; Chiaradia Massimo; Vogel Hendrik;
TDP Workshop 2017 Talk given at a conference Determining Organic Matter and Siderite content in Lake Towuti sediments - Empowering the results of Conventional Rock-Eval Analyses 08.06.2017 Bandung, Indonesia Vogel Hendrik; Ariztegui Daniel;
Swisssed Poster Geochemical cycles in Lake Towuti (Indonesia) - Disentangling the dominant factors ruling Fe isotopes fractionation 27.02.2017 Fribourg, Switzerland Ariztegui Daniel; Vogel Hendrik; Chiaradia Massimo;
SwissSed Poster Climatic and tectonic controls on source-to-sink processes through space and time in a tropical lateritic lake catchment: Lake Towuti, Indonesia 25.02.2017 Fribourg, Switzerland Vogel Hendrik;
Swiss Geoscience Meeting Poster Fe isotopes as indicators of bio-geochemical cycling in Lake Towuti (Indonesia) 18.11.2016 Geneva, Switzerland Vogel Hendrik; Chiaradia Massimo; Ariztegui Daniel;
EGU General Assembly Talk given at a conference Source to sink element geochemistry in Lake Towuti, Indonesia: Understanding climate induced controls on sediment compositon during the past 60 kyr BP 17.04.2016 Wien, Austria Vogel Hendrik;
Swiss Global Change Day Poster Source to sink element geochemistry and clay mineralogy in Lake Towuti, Indonesia: understanding climate-induced controls on sediment composition during the past 60 kyr BP 12.04.2016 Bern, Switzerland Ariztegui Daniel; Vogel Hendrik;
Swissed Poster Source to sink element geochemistry and clay mineralogy in Lake Towuti, Indonesia: understanding climate-induced controls on sediment composition during the past 60 kyr BP 27.02.2016 Fribourg, Switzerland Vogel Hendrik; Ariztegui Daniel;
Swiss Geoscience Meeting Talk given at a conference The Lake Towuti Drilling Project: A new, 1 million year record of Quaternary climate and ecosystem 20.11.2015 Basel, Switzerland Vogel Hendrik; Ariztegui Daniel;
Swiss Geoscience Meeting Talk given at a conference Erosion intensity and element cycling under changing hydroclimatic conditions in the catchment of tropical Lake Towuti, Indonesia 20.11.2015 Basel, Switzerland Vogel Hendrik;
Swiss Drilling Day Talk given at a conference The Lake Towuti Drilling Project: A New, 1-Million Year Paleorecord from the Indo-Pacific 09.09.2015 Bern, Switzerland Vogel Hendrik; Ariztegui Daniel; Chiaradia Massimo; Anselmetti Flavio S.;
CH-Quat meeting Talk given at a conference The footprint of hydroclimatic changes in sediments of Lake Towuti, equatorial Indonesia 28.05.2015 Bern, Switzerland Vogel Hendrik;
EGU general assembly Poster Climate induced metal enrichment in sediments of ferruginous Lake Towuti, Indonesia 12.04.2015 Wien, Austria Vogel Hendrik;


Communication with the public

Communication Title Media Place Year
Talks/events/exhibitions Nationaler Zukunftstag – Spuren im Schlamm German-speaking Switzerland 2016
Media relations: print media, online media Der Klimaschatz vom Towuti See OCCR website German-speaking Switzerland 2015
Talks/events/exhibitions Studieninfotag – Sedimente als Klimaarchive German-speaking Switzerland 2015
New media (web, blogs, podcasts, news feeds etc.) @towutidrilling facebook International 2014

Associated projects

Number Title Start Funding scheme
182090 Swiss membership in the International Scientific Continental Drilling Program ICDP 01.01.2019 Research Infrastructure
143340 The Swiss contribution to the ICDP Lake Van Drilling Project: Linking modern seismic and biogeochemical signatures to 500,000 years of environmental history 01.01.2013 Project funding (Div. I-III)
134545 Potrok Aike Maar Lake Sediments Archive Drilling Project - The Swiss contribution (PASADO-CH). Phase II 01.04.2011 Project funding (Div. I-III)
169911 Swiss membership in the International Scientific Continental Drilling Program ICDP 01.01.2017 Research Infrastructure
188876 The Lake Poso record: Paleoseismology, paleoclimate, and paleoenvironment on Sulawesi (Indonesia) 01.03.2020 Project funding (Div. I-III)
149221 Dead Sea Deep Drilling Project: The Swiss contribution (DSDDP-CH) - Phase II 01.12.2013 Project funding (Div. I-III)

Abstract

Two interlinked proposals seek funds for the Swiss contribution to the Lake Towuti Drilling Project (TDP) that is already partially sponsored and will be executed by the International Continental Scientific Drilling Program (ICDP). One proposal seeks funds for scientific activities and two PhD students of the involved Swiss research groups. Another proposal seeks funds for the Swiss share of costs related to drilling operations that will recover several hundred meters of sediment from Lake Towuti’s subsurface. Lake Towuti (2.5°S, 121°E) is a 560 km2-large and 200-m deep tectonic lake at the downstream end of the Malili lake system, a set of five ancient (1-2 Ma) tectonic lakes located in central Sulawesi, Indonesia. Its location provides an important opportunity to reconstruct long-term terrestrial paleoclimate change in a crucially important yet understudied region- the Western Pacific warm pool, heart of the El Niño-Southern Oscillation. Lake Towuti has high rates of floral and faunal endemism and is surrounded by one of the most diverse tropical forests on Earth, making it a hotspot of Southeast Asian biodiversity. The ultramafic (ophiolitic) rocks and lateritic soils in the catchment provide ferruginous metal substrates that feed a diverse, exotic microbial community in the lake and its sediments, potentially analogous to the microbial ecosystems that operated in the Archean Oceans and on Mars. Therefore, Lake Towuti is a key site for ICDP activities and the TDP will provide valuable new information to understand the climate, biological, and geomicrobiological evolution of this unique system. This Swiss initiative embedded in the overarching ICDP Towuti Drilling Project encompasses two interlinked research modules: Module (A): Climate history: Detailed sedimentology, geochemistry, and mineralogy of drill core from Site 1 (PI’s: Hendrik Vogel & Flavio Anselmetti, U. Bern). This module will provide the temporal succession of lithological variations and contribute the stratigraphic backbone for the master site of the TDP. Detailed lithofacies characterization, paired with high-resolution major element chemistry (XRF core-scanning), and detailed granulometric and mineralogical analysis on the sediment succession, will produce datasets crucial for the reconstruction of climatic and environmental variability and limnological change at high temporal resolutions. Information on sediment geochemistry and mineralogy as well as on climate-induced changes of past limnological conditions will also be beneficial for the geomicrobiological research of Module (B). The sedimentological and geochemical analysis of fluviolacustrine sediments will help characterizing the style and nature of Towuti’s early lake stages, the primordial ooze for today’s biodiversity and endemism. Module (B): Exploring the lacustrine subsurface biosphere (PI’s: Daniel Ariztegui & Massimo Chiaradia, U. Geneva). Microbial activity decreases dramatically below the sediment water interface, yet over long time-scales, this activity has an appreciable impact on sediment composition and on extant biogeochemical cycles. In this module we will examine the activity of the microbial community throughout the sediments. We will provide first-hand information on microbial activity measuring in situ ATP activity immediately after the cores will be retrieved. This bulk data will be compared and blended with more detailed analyses that will be performed by other members of the ICDP project. Laboratory analyses will include Rock-Eval pyrolysis to characterize the bulk nature of the organic matter that is the main support for microbial development. Lake Towuti’s sediments are Fe-rich and thus stand out as an end member microbial habitat. Thus, Fe-isotope analyses will also be performed by the Ph.D. student of this module. These data are anticipated to capture signals of strong water column stratification and anoxia as well as to record information about catchment weathering. Additionally, Zn isotopes will be measured in the same samples providing an independent proxy for productivity changes. This information will be amalgamated with that coming out from Module A to provide a solid picture of the nature of the lithological variations and its relationship with environmental changes.
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