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Topics and sessions > Topic VII - Regional paleoreconstructions

VII-1-(Sub)Antarctic lakes as recorders of local to global environment and climate changes

Conveners

  1. Fabien Arnaud (EDYTEM, CNRS, Univ. Savoie Mont Blanc, Le Bourget du Lac, France), fabien.arnaud@univ-smb.fr
  2. Jostein Bakke (Department of Earth Science and Bjerknes Centre for Climate Research, University of Bergen, Bergen, Norway)
  3. Bianca Perren (British Antarctic Survey, Cambridge, UK)
  4. Dominic Hodgson (British Antarctic Survey, Cambridge, UK)
  5. Emeline Bellet (EDYTEM, CNRS, Univ. Savoie Mont Blanc, Le Bourget du Lac, France)
  6. Tobias Schneider (Institute of Geography and Oeschger Centre for Climate Change Research, University of Bern, Switzerland)

The southern hemisphere high latitudes occupy a key place on Earth to maintain the subtle equilibria that make it an inhabitable planet. The Southern Annular Mode, which leads the dynamics of southern westerlies winds, is one of the major Earth climate modes, and circumpolar Antarctic waters are key for global carbon cycles. Moreover, Sub-Antarctic and Antarctic waters are among the richest on Earth and host an incredible biodiversity, whereas the Antarctic continent is a refuge for several species endangered by the current global warming. Despite its climatic and ecological importance, very little is known about the natural history of those remote places. Within this session, we will investigate the potential of southern high-latitude lake systems to reveal the environmental and climatic factors that have affected and continue to affect the region and their connections with the functioning of the Earth. Contributions are encouraged on any time scale, from very recent to multi-glacial cycles. We welcome contributions that utilise lake sediments as archives of past climatic and environmental changes, especially new and emerging methods such as sedimentary DNA, molecular and/or isotopic organic geochemistry, high-resolution scanning techniques (e.g., µXRF, hyperspectral imaging, µCT), or advanced quantitative transfer functions. The aim of this session is to foster a community of researchers involved in those remote environments to permit the emergence of integrated views and generate innovative ideas and future projects.

 

 

Topic VII - Regional paleoreconstructions > VII-2-Lakes in the Neotropics: Archives of paleoclimate and environmental change

Conveners

  1. Edward Duarte (Environnements, Laboratoire Environnements, Dynamiques et Territoires de Montagne – EDYTEM, Le Bourget-du-Lac, France), edward.duarte1@univ-smb.fr
  2. Liseth Pérez (Chair of Organic Biogeochemistry in Geo-Systems, RWTH Aachen University, Aachen 52056, Germany)
  3. Jonathan Obrist-Farner (Department of Earth Sciences and Engineering, Missouri University of Science and Technology, USA)
  4. Lina C. Pérez-Angel (Department of Earth, Environmental and Planetary Sciences, Brown University, USA)

Lacustrine records have been important to understand past changes in climate and environmental conditions. Paleolimnological investigations have provided invaluable proxy data to understand environmental events that drive ecological change, while also serving to calibrate and evaluate the accuracy of climate models. However, the paucity of high-resolution proxy records from tropical and subtropical regions, in comparison to those from higher-latitude lakes, has resulted in an inability to reconcile paleoclimate proxy data and climate models at key intervals in Earth’s history and to develop effective management strategies for freshwater ecosystems in the Neotropics.

We welcome abstracts on all topics related to low-latitude lake bodies including limnology, hydrology, geomorphology, geophysics, remote sensing, ecology, data and modeling, climate change, anthropogenic impacts, as well as the policy and management of these water resources.
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