The themes of this interdisciplinary project are "Global Change and Impact on the Natural Environment and its Biological Response” and "Natural Hazards." The main objectives are to improve knowledge of the eruptive history of Piton de la Fournaise (frequency and intensity) and of two main volcanic hazards, using botanical and chemical study using a native pioneer plant species on lava flow, Bois de Rempart (BR) (Agarista salicifolia). This tree has a germination and installation capacity only on new substrates devoid of vegetation. It is not only the dominant species on lava flows, but also a long-lived tree and unusable wood.
Study procedure is as follows:
(1) Dating the pen flows out of volcanic enclosure, from the BR diameter measured on recent and known age lava flows,
(2) Dating major volcanic gas emissions by dendroisotopic analysis of BR cellulose (Anomaly = 180 presence of volcanic gases).
The aim is to produce a new map of volcanic hazards for Piton de la Fournaise sides.
As a result of its optimal geographic position, the station is the ideal place for students and researchers working on this program.
FUNDING: OSU-Réunion, Federation OMNCG