Autökologische Studien an Moorpflanzen 1. Charakterisierung der wichtigsten Pflanzensippen oligotroph-saurer Moore auf Grund ihrer Kationengehalte

Abstract

Summary 692 leave samples from mire plants (28 species, 9 families) were analyzed with regard to their contents in K, Ca, Mg, Mn and Fe to find out, if it is possible to characterize plant families by their cation-design according to the concepts of D uvigneaud & D enaeyer -D e Smet (1968, 1970) and H orak & K inzel (1971). The plant material used was earned in 4 collections, 2 in Sept. 1977 and 1978 to get values from the autumn-situation with the highest ion concentrations, one collection was done during investigations on a mirecomplex in the Limestone Alps in June 1979 and the fourth is from an investigation on the annual fluctuation of macronutrients in the genus Vaccinium from 1977–1979 (E der 1980). The first 2 collections were from 20 mire-sites situated all over Austria and each one site in Bavaria and Slovenia. Samples were taken too from mineral soil habitats in the neighbourhood of the mires and from Subalpine dwarf-shrub heaths in the Central Alps. This diversity of the sample localities should guarantee, that the results show really plant specific characteristics and not values depending on habitat conditions. For the interpretation of the results the BMDP5D-PROGRAM in the version of 1982, the univariate scatter plot was used showing diagrams with the distributions of the ions. This distributions were found to be characteristic for the following 5 family-groups: Coniferae , Ericaceae and Empetraceae , Cyperaceae , Poaceae and Scheuchzeriaceae , dicotyle herbs as a whole and mosses. Moreover, the results could also be used for interpretations in connection with the autecological behaviour of families, genera or single species, e.g. the role of Manganese in the distribution of Vaccinium myrtillus and Vaccinium uliginosum in the gradient mire expanse, mire margin, Lagg and!neighboured spruce forest.