light availability datafile ...

The research was conducted across 53 plots (30 m x 30 m) located in mature forests in the region of Ghent, Belgium (the ‘TREEWEB’ platform) Light transmittance was measured with hemispherical images before and after leaf expansion at four locations in each of the 53 plots. We calculated the gap light index (GLI), which is the total transmitted PAR to the forest floor as a percentage of total incident PAR above the canopy. ...