Dataset: ECOSENSE stem BVOC fluxes

This dataset presents stem BVOC (biogenic volatile organic compound) fluxes from six temperate tree species measured under field conditions in May and June 2025. Measurements were conducted during midday (13:00-15:00 CEST), a period chosen to capture peak physiological activity and flux rates, in the municipal forest of Ettenheim, Baden-Württemberg, Germany. The study site is located in a temperate mixed forest ecosystem at the transition between the Upper Rhine Valley and the Black Forest and is characterized by a diverse tree species composition. BVOC fluxes are reported in μg m-2 h-1 and were obtained using stem-based sampling approaches designed to quantify BVOC fluxes directly at the stem surface. Samples were collected from six representative tree species: Quercus robur (Qr), Fagus sylvatica (Fs), Larix decidua (Ld), Pseudotsuga menziesii (Pm), Abies alba (Aa), and Picea abies (Pa), covering both broadleaf and coniferous functional types.