id	keyword
abc-1061	shade
abc-1061	shade leaves
abc-1061	leaf
abc-1061	sun
abc-1061	species
abc-1061	light
abc-1061	et al
abc-1061	sun leaves
abc-1061	forest
abc-1061	alba
abc-1061	sun shade
abc-1061	crown
abc-1061	chl
abc-1061	thickness
abc-1061	robur
abc-1061	plasticity
abc-1061	tree