Die Standortamplitude der Großen Brennessel (Urtica dioica L.)—eine Auswertung vegetationskundlicher Aufnahmen auf der Grundlage der Ellenbergschen Zeigerwerte )

Abstract

SUMMARY The ecological amplitude of stinging nettle ( Urtica dioica L.) was characterized on the basis of average indicator values sensu Ellenberg (1974). Based on 1132 phytosociological descriptions the following results were obtained:— Urtica dioica had a narrow amplitude for soil acidity (R-value), centered close to neutral— Nitrogen-rich sites were clearly preferred, but the habitat amplitude was greater for nitrogen supply than for soil acidity. Nitrogen-poor soils were not colonized.— Moist sites were preferred. Drier and wetter sites were colonized only after anthropogenic disturbance.— The nettles occured on both sunny and shaded sites, but their main distribution was on nitrogen-rich soils with partial shade.