Summer School "Ecology and Society: Frontiers and Boundaries" / 3 - 7 June 2019

Ecosystems societies Climate change Forests Hydrosystems Atmosphere Biodiversity Agrosystems Pressures Impacts Modelling Pollution Ecotoxicology Biogeochimical cycles Ecology Adaptability

Commodifying ecosystemic services

Forests week

Field Trip


Group - Crédits photo LabEx COTE

Forest trip

Round table - Crédits photo LabEx COTE

Field trip 2015 - Château Suduiraut, Crédits photo LabEx COTE

Round table Global ecology

Report by students

Welcome !

City trip - Crédits photo LabEx COTE

Classroom - Crédits photo LabEx COTE

Hydrosystems week



Conference room

Fieldtrip Ciron - Crédits photo LabEx COTE

Boat trip

Group 2018 - Crédits photo LabEx COTE

Role of cloud microorganisms in atmospheric processes

by Anne-Marie Delort

10 years ago our group started to study microorganisms present in cloud waters at the Puy de Dôme station. We showed that they were alive and metabolically active because they can resist to atmospheric stresses. This pioneering work opened new scientific questions concerning their potential role in atmospheric chemistry and physics. We showed that microorganisms can act as an alternative route to radical chemistry to transform organic compounds and oxidant species (including hydrogen peroxide and Iron) in clouds. Cloud microorganism can also participate to the formation of droplets by the production of biosurfactants, some others can act as Ice Nuclei thanks to their membrane protein and could thus participate to precipitations. Recent results will be presented.