With plants, <dominance> indicates the degree of covering (dominance) of the ground with this plant. Allowed keywords are: undetermined, less-than-1/20, 1/20-up-to-1/4, 1/4-up-to-1/2, 1/2-up-to-3/4, greater-than-3/4, single-individual (division according to Emschermann, P., Hoffrichter, O., Körner, H., Zissler, D. (Ed.), Meeresbiologische Exkursion, Gustav Fischer Verlag, Stuttgart, Jena, 1992, ISBN 3-437-20414-9, page 46).
If the degree of covering cannot be determined, <dominance> can be omitted, or <dominance>undetermined</dominance> is given.
<species>
<!-- degree of covering could not be determined -->
<!-- (in this case the statement can also be omitted) -->
<dominance>undetermined</dominance>
<!-- degreee of covering 1/4 up to 1/2 of the area investigated-->
<dominance>1/4-up-to-1/2</dominance>
<!-- only single individuals -->
<dominance>single-individual</dominance>