Tracing back the evolution of Sub-Antarctic ecosystems

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These project aims at understanding the evolution of the ecosystems of Sub-Antarctic islands during the Holocene and its modern conditions. It includes three work packages: 1) Terrestrial geomorphologic and paleogeographical studies, 2) The study of stable oxygen and hydrogen isotopes (ongoing measurements) and 3) The study of aerosols (ongoing measurements). The main project tasks are: measuring heights of terraces and coastlines of the islands that will be visited; sampling organic material and loose sediments from terraces and coastlines to carry out carbon-14, OSL- and ESR- dating; geomorphologic mapping of visited coastline areas of islands; sediment core sampling from the lakes located 10-15m above sea level; sampling ocean water vapor, ice, and snow from the islands’ glaciers to analyze the ratio of oxygen isotopes; continuous sampling in the course of the cruise of aerosol particles in the air (concentration – hourly, chemical composition – daily).

Principal Investigator (PI)

Dmitry Bolshiyanov

Arctic and Antarctic Research Institute, Russia

 

Evolution of the ecosystems of Sub-Antarctic Islands during Holocene and its modern conditions

Principal institution / country

  • Laboratoire des Sciences du Climat et de l’Environnement, CEA/CNRS/UVSQ/IPSL (Gif-sur-Yvette/Saclay, France)
  • Institute of Atmospheric Optics, RAS, Siberian Branch (Tomsk, Russia)