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Information on Symposia per Science Theme

Theme No.

Theme Title

Number of Symposia proposed

Symposia Title

Symposia Conveners

Biographical sketch of the Conveners




Critical zone and Sustainable Development

Dr. Vimal Singh


Dr. Sekhar Muddu




Karl Schneider


Soil moisture, water cycle, climate-soil-vegetation system

Ecosystem regulates the interaction of radiant energy and mass transfer that is essential in the development of the Critical Zone. It is known that the Critical Zone impacts ecosystems and interaction between the vegetation and water is important to understand this process; this study of interaction between water and ecosystems is central to the Ecohydrology.

The theme of Ecohydrology encompasses all the hydrological processes impacting distribution and function of ecosystems. The scale may vary from interaction at pore level to the vegetation-atmosphere boundary level.

Critical Zone Science in Tropical System

Laurent Ruiz (France)

Soil production, weathering, critical zone, tropical climate

High temperatures, large amount of rainfall, and seasonality characterise the Tropical regions. Further areas with tropical climate can be divided in to wet, wet and dry, dry and cool tropics. Due to variation in temperatures, rainfall, and geology, the rate of weathering varies enormously in these areas, as a result soil production in these areas varies widely. It should be noted that large population lives in these regions, hence it is important to understand the Critical Zone processes in these areas.


Jean Riotte


Vegetation-Critical Zone, Nutrient cycle, Biogeochemistry

Understanding of the interactions between the four important spheres viz., atmosphere, hydrosphere, lithosphere, and biosphere is central to the theme of Biogeosciences. The interaction between natural ecosystems, physical and chemical enviroment, and humans is very complex and multidirectional, therefore, to comprehend these processes an integrated multidisciplinary approach is required. The biogeosciences studies have potential to enrich Critical Zone understanding; thus, its important to focus not only up on plant and microbial composition or quantification of processes driven by them but also, up on aspects such as microbial responses to environmental stresses that impacts biogeochemistry, depth up to which biological signals could be observed etc.