Continuous stem diameter variations as an innovative phenotyping tools for tree functioning under stress

AMEGLIO T; LAMACQUE L; BAFFOIN R; HERBETTE S; FERNÁNDEZ ME; GYENGE JE; SAUDREAU M; NGAO J; LACOINTE L; CHARRIER G

Bariloche

Conferencia; International Conference: Adapting forest ecosystems and wood products to biotic and abiotic stress; 2019

LIA Forestia - INTA (Argentina) e INRA (Francia)

Continuous monitoring of stem diameter variations allowstogether the phenology, the growth dynamics and the associated physiology oftrees to be detected together and thus better manage abiotic and bioticstresses that they are subjected to. Recently, we developed a new autonomous prototypeconnected on Sigfox or LoRa networks, the PepiPIAF system (Hydrasol, France)for non-disturbing, very accurate (sensitivity to micrometers) monitoring ofstem (trunk or branch) diameter variations. Data are saved together withreal-time air temperature, using a wireless technology. Potential applicationsare multiple and concern all types of trees and shrubs in various contexts. Thetechnical details of this system and some examples of application and expertise(i) in phenology parameters acquisition, (ii) in extreme drought conditions todetermine mortality, (iii) in tree line limit to detect frost acclimation, (iv)in urban context to estimate services by trees to mitigate heat waves, will bepresented in proposed communication.