Fulltext

Five-year changes in Swiss mire vegetation = Veränderung der Schweizer Moorvegetation innerhalb von fünf Jahren

Graf, Ulrich ; Wildi, Otto ; Küchler, Meinrad ; Ecker, Klaus

In: Botanica Helvetica, 2010, vol. 120, no. 1, p. 15-27

Aggiungi alla tua lista
    Titre
    • Five-year changes in Swiss mire vegetation
    Titre traduit ()
    • Veränderung der Schweizer Moorvegetation innerhalb von fünf Jahren
    Auteur
    • Graf, Ulrich. WSL, Swiss Federal Institute for Forest, Snow and Landscape Research, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland
    • Wildi, Otto. WSL, Swiss Federal Institute for Forest, Snow and Landscape Research, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland
    • Küchler, Meinrad. WSL, Swiss Federal Institute for Forest, Snow and Landscape Research, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland
    • Ecker, Klaus. WSL, Swiss Federal Institute for Forest, Snow and Landscape Research, Zürcherstrasse 111, 8903, Birmensdorf, Switzerland
    Type de document
    • Postprint
    Langue
    • Inglese
    Publié dans
    • Botanica Helvetica, 2010, vol. 120, no. 1, p. 15-27. SP Birkhäuser Verlag Basel
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:321155
    Summary
    To assess whether short-term changes in mire vegetation can be detected using the phytosociological approach, paired vegetation relevés from two surveys of 112 mire sites of Switzerland were assigned to phytosociological alliances through a numerical approach. About 30% of the plots were assigned to different alliances in the two surveys. These transitions were analysed based on species frequencies and interpreted ecologically using Landolt's indicator values. Transitions between different alliances were more frequently related to the appearance of new species rather than to the disappearance of species. Transitions from and to peat bog communities were frequent. Many plots with fen vegetation were transformed into other wetland types. Fen-grassland increased in abundance, mainly at the cost of small-sedge fens. To re-establish the function of the Swiss mires as peat producers, we recommend to raise the mean summer water table to a maximum depth of 10cm