New Approaches in tree phenomics: the TreeTalker multiparametric device
14. Januar 2020 17:15 – 14. Januar 2020 18:15
Kleiner Hörsaal (Altes MPI)
Forests cover about 30% of the land area and provide a number of ecological services, such as biodiversity, timber, fibres, food, water purification, erosion control and carbon sequestration, as well as climate regulation. Forests are currently under threat by deforestation, forest degradation, fires, droughts, storms, diseases and many other disturbances. Sudden tree mortality, linked to drought and temperature stress, diseases and insects’ outbreaks, etc., is also an increasing and emergent concern. The direct attribution of extensive tree mortality to warming or drying episodes is still under debate (IPCC AR5). Despite there are a number of methods for addressing simultaneously tree functions such as photosynthesis and transpiration at leaf level or at canopy scale the same information at high temporal frequency and at individual tree scale is not yet widely diffused. Taking advantage of new technology and latest developments in sensor science, (e.g Internet of Things) we have developed a new device able to measure simultaneously important tree parameters. The parameters are: 1) tree radial growth, as indicator of photosynthetic carbon allocation in biomass; 2) sap flow, as indicator of tree transpiration and functionality of xylem transport; 3) xylem moisture content as indicator of hydraulic functionality 3) light penetration in the canopy in terms of fractional absorbed radiation and 4) light spectral components related to foliage dieback and physiology, 5) tree stability parameters to allow real time forecast of potential tree fallings. We will present a synthesis of data coming from different forest locations including natural, urban and artificial plantations and discuss the capabilities to extend such network at global scale. We also discuss the possibility of using our devices in large scale phenomics applications for individual tree responses to climate change impacts and identification of plant traits.
Prof. Dr. Riccardo Valentini
University of Tuscia, Viterbo, Italien
Kolloquium Ökologie, Naturschutz, Biodiversität