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Ellenberg light value

Formal name:  plant populations light indicator value according to Ellenberg
Abbreviation:  L
Local identifier:  TOP186
Synonym Term:  plant light preference
Related Term:  shade tolerance
Definition:  a feature of the plant population (EFO:plant population) or plant species (Mayr:species) describing the occurrence of its individuals in relation to relative irradiance intensity at the time when the deciduous plants (PATO:deciduous (plant)) are in full leaf (PO:leaf)
Formal Unit:  unitless (ordinal)

Comment:  The values are indicators for the ecological behavior of a distinct plant species distributed in Central Europe, i.e. for its occurance under field conditions, including competition of many other plants. The different light values can be ordered according to increasing relative irradiance intensity as follows: L1, L2, L3, L4, L5, L6, L7, L8, L9
Reference:  Ellenberg, H., Weber, H. E., Duell, R., Wirth, V., Werner, W., Paulissen, D. (1992): Zeigerwerte der Pflanzen in Mitteleuropa, 2nd edition, Scripta Geobotanica, Vol. 18, Goltze KG, Goettingen