Untersuchungen zur Diasporenbank der Bunkerde am Beispiel der Kollerfilze (Rosenheimer Becken; Alpentorfwerke Raubling)
Investigations into the diaspore bank of the top spit by reference to the Bavarian Kollerfilze bog (Rosenheim basin, Alpentorfwerke Raubling).
Creators: name: Poschlod, Peter
Publisher: name: FID GEO
Year: 1989

description: Die Diasporenbank der oberen Bodenschichten der in ehemaligen Maschinentorfstichen zwischengelagerten Bunkerde (im engeren Sinne: Vegetationshorizont) wurde untersucht. Die aktuellen Pflanzengesellschaften in diesen Maschinentorfstichen sind heute mehr oder weniger trockene, pfeifengrasarme bzw. pfeifengrasreiche Zwergstrauchheiden. Dabei haben nur die in der aktuellen Vegetation vorkommenden Arten (Calluna vulgaris, Molinia caerulea‚ Campylopus pyriformis, Cephalozia connivens) eine nennenswerte Samen- bzw. Diasporenbank aufgebaut. Während bei den Phanerogamen keine Arten der ehemals torfbildenden Vegetation (Eriophorum-Sphagnum-Torf!) in der Samenbank vertreten waren, kamen zumindest in der Diasporenbank der Kryptogamen mehrere Torfmoose (Sphagnum angustifolium, S. capillifolium, S. cuspidatum, S. magellanicum) vor, allerdings im Vergleich zu anderen Moosen mit sehr geringer Sproßzahl. Dabei entstanden die neuen Sprosse entweder aus mehr oder weniger stark vertorften Sproßteilchen oder über eine vorherige Protonemabildung; Möglicherweise existiert deshalb eine aus Sporen bestehende Diasporenbank der Torfmoose. Von welchem Typ die Diasporen der anderen Moose sind, ob Sporen oder vegetative Diasporen (Sproßteilchen, Brutkörper usw.), müssen weitere Untersuchungen zeigen.
description: This paper deals with results on the diaspore bank of a Bavarian mire under peat exploitation. The peat material containing the seed bank is the top spit, i.e. the uppermost layer of the mire, from which peat could not be extracted by cutting or milling. Therefore this layer, referred to in this text as the vegetation horizon, has been removed and refilled in former peat cutting areas. It is assumed by some people in peat industry that spreading of this material on the surface of recently milled peat areas facilitates recolonization by the plant cover of an intact mire. Therefore, the diaspore bank of the top spit was investigated as to its species composition. The results were as follows: Only the species occuring in the current vegetation, a dry heath (Calluna vulgaris, Molinia caerulea, Campylopus pyriformis, Cephalozia connivens), formed a significant seedbank or diaspore bank whereas, with the phanerogams none of the species from the former Cotton-Grass-Sphagnum peat forming mire vegetation were present in the seedbank. In the diaspore bank of the cryptogams, however, various peat mosses occurred (Sphagnum angustifolium, S. capillifolium, S. cuspidatum and S. magellanicum) though there were very few shoots in comparison with other mosses. Here new shoots developed from stems which appeared brown and dead or from protonemata. It is therefore possible that a diaspore bank of peat mosses exists consisting of spores. Further investigations will be required to establish the type of diaspores of the other mosses, be they spores or vegetative diaspores (stem particles or any gemmae etc.).
description: DFG, SUB Göttingen
description: research