Original paper

Zur Gliederung des Rhynchosporion albae W. Koch 1926 in Europa

Dierssen, K.; Reichelt, H.

Phytocoenologia Band 16 Heft 1 (1988), p. 37 - 104

48 references

published: Mar 3, 1988

DOI: 10.1127/phyto/16/1988/37

BibTeX file

ArtNo. ESP024001601002, Price: 29.00 €

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Kurzfassung

Anhand von rund 4200 Vegetationsaufnahmen wird eine Übersicht über die Gliederung des Verbandes Rhynchosporion (Ordnung Scheuchzerietalia, Klasse Scheuchzerio-Caricetea fuscae) vorgestellt. Eine allgemeine ökologische Charakteristik wird erörtert und Abgrenzungsprobleme gegenüber floristisch ähnlich zusammengesetzten Kontaktgesellschaften der Klassen Oxycocco-Sphagnetea sowie anderen höheren Einheiten der Klasse Scheuchzerio-Caricetea fuscae werden erörtert. Es folgt eine Einzelbeschreibung der drei unterschiedenen Assoziationen (einschließlich einer Eriophorum angustifolium-Gesellschaft), die standortlich dem Rhynchosporion nahesteht und floristisch als Rumpfgesellschaft (Basalgesellschaft) der Ordnung Scheuchzerietalia palustris einzuordnen ist. Die Beschreibungen umfassen Hinweise auf häufiger verwendete Synonyme, eine symmorphologische und standortliche Charakteristik sowie Zonationsmodelle und Verbreitungskarten der unterschiedenen Untereinheiten. Eine nomenklatorische Typifizierung der unterschiedenen Vegetationseinheiten wird angefügt.

Abstract

The phytosociological characterization of the alliance Rhynchosporion albaeKoch 1926 in Europe. The present survey presents a proposal for the delimitation of carpet and mud-bottom communities within oligotrophic and mesotrophic mires of boreal and temperate regions. About 4200 vegetation samples were compared. The characteristic species of the alliance and its three associations distinguished are: Scheuchzeria palustris, Carex limosa, Rhynchospora alba, Rhynchospora fusca, Drosera intermedia, Carex rotundata, Eriophorum russeolum, Sphagnum cuspidatum, Sphagnum majus, Sphagnum balticum, Sphagnum jensenii, Drepanocladus fluitans and Cladopodiella fluitans. The corresponding alliance Caricion lasiocarpae of the same order is Scheuchzerietalia, besides having a different floristic character separated by the higher productivity of its faithful species. The high compensation level of the mire water table (< 5 cm below soil surface) is the key hydrological factor for Rynchosporion sites. Differences in peat and peat water acidity are reflected floristically by different bryophyte synusia in the bottom layer (and classified at subassociation level). Difficulties in the delimitation from communities of the class Oxycocco-Sphagetea are discussed in detail. The floristical limit of hummock forming Sphagnaceae (Sphagnum magellanicum, Sphagnum rubellum) and mycorrhiza -building Ericaceae (Erica tetralix, Calluna vulgaris) in wet mire sites is considered to be useful both synecological and syntaxonomical for the separation of the two classes. The communities and their subassociations are described in detail; included are surveys of the vegetation samples used by different authors from various regions, the symmorphological appearance of the units, the more frequently used synonyms in former descriptions and a discussion of the most practicable subdivision of the vegetation types investigated. Characteristic zonation types are pointed out and ecological investigations from the literature are considered. A nomenclatural typification of the units described is included.

Keywords

mirepeathummockecological investigationsnomenclatural typification