TY  - JOUR
A1  - Tötzke, Christian
A1  - Cermak, Jan
A1  - Nadezhdina, Nadezhda
A1  - Tributsch, Helmut
T1  - Electrochemical in-situ studies of solar mediated oxygen transport and turnover dynamics in a tree trunk of Tilia cordata
JF  - iForest - Biogeosciences and Forestry
N2  - Platinum electrodes were implanted into the xylem of a lime tree (Tilia cordata) stem and solar- induced electrochemical potential differences of up to 120 mV were measured during the vegetative period and up to 30 mV in winter. The time dependent curves were found to be delayed with respect to solar radiation, sap flow activity, temperature and vapor pressure deficit. A general equation for the potential difference was derived and simplified by analyzing the effect of temperature and tensile strength. The potential determining influence of oxygen concentration on the respective location of the platinum electrode was identified as the principal phenomenon measured. A systematic analysis and investigation of the observed periodic oxygen concentration signals promises new information on sap flow, oxygen diffusion through tree tissues and on oxygen consumption related to the energy turnover in tree tissues.
KW  - Tree Stems
KW  - Oxygen Transport
KW  - Xylem
KW  - Sap Flow
KW  - Tree Metabolism
KW  - Electrical Potential
Y1  - 2017
U6  - https://doi.org/10.3832/ifor1681-010
SN  - 1971-7458
VL  - 10
IS  - 2
SP  - 355
EP  - 361
PB  - SISEF - The Italian Society of Silviculture and Forest Ecology
CY  - Potenza
ER  -