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Ellenberg salt value

Formal name:  plant populations salt indicator value according to Ellenberg
Abbreviation:  S
Local identifier:  TOP200
Synonym Term:  plant salt preference
Related Term:  salt tolerance
Definition:  a feature of the plant population (EFO:plant population) or plant species (Mayr:species) describing the occurrence of its individulas along gradient of salt in soil solution or water solution
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 salt values can be ordered according to increasing salt content as follows: S1, S2 S3, S4, S5, S6, S7, S8, S9
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