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Ellenberg nutrient value

Formal name:  plant populations nutrient indicator value according to Ellenberg
Abbreviation:  N
Local identifier:  TOP780
Synonym Term:  plant nutrient preference
Definition:  a feature of the plant population (EFO:plant population) or plant species (Mayr:species) describing the occurrence of its individuals along gradients of few to much available nutrients during the growing period
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 nutrient values can be ordered according to available nutrients as follows: 1=N1, 2=N2 3=N3, 4=N4, 5=N5, 6=N6, 7=N7, 8=N8, 9=N9
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