Bugmann Harald

Einfluss von Wurzelfäule-Pilzen auf die Walddynamik im Schweizer Nationalpark
Assessing the extension of root rot fungi, their influence on forest dynamics and forest regeneration in the Swiss National Park


Project Number: CH-2194
Project Type: Dissertation
Project Duration: 11/01/2002 - 10/31/2005 project completed
Funding Source: National ,
Project Leader: Prof. Harald Bugmann
Waldökologie
Institut für Terrestrische Ökosysteme (ITES)
ETH Zürich
ETH Zentrum CHN G 76.1
Universitätstrasse 16
8092 Zürich
Phone: +41 (0) 44 632 32 39 ; +41 (0) 44 632 32 17
FAX: +41 (0) 44 632 13 58
e-Mail: harald.bugmann(at)env.ethz.ch
http://www.fe.ethz.ch/

related to this project.
for which the project has a relevance.


Research Areas:
Biodiversity

Disciplines:
ecology
general biology

Keywords:
Vegetationskunde
Phytopathologie

Abstract:
Assessing the extension of root rot fungi, their influence on forest dynamics and forest regeneration in the Swiss National Park

Disturbances are important in maintaining the dynamic nature of ecosystems. Especially small-scale disturbances can be regarded as a primary source for heterogeneity in forest structure and composition. Root rot fungi play an important role in forest dynamics in the Swiss National Park. They not only cause single tree mortality but also spreading disease centres.
The goal of this dissertation is to
  • evaluate the spatial and temporal extension of gaps in the forest canopy based on a time series of aerial photographs
  • assess the occurrence and distribution of root rot fungi in gaps based on field surveys
  • link the aboveground symptoms of the trees with the occurrence of root rot fungi in their root systems
  • assess the qualitative and quantitative extent of woody regeneration in gaps and their influence on the future forest development.

    Our hypotheses are that
    i) root rot fungi play an important role in the forests of the Swiss National Park and spread since the founding of the park
    ii) trees with aboveground symptoms are infected by the root rot fungi Armillaria spp. and/or Heterobasidion annosum and the rooting systems of the trees at the edge of the gaps are already (at least in parts) infected
    iii) mainly mountain pines (Pinus mugo) regenerate in gaps and therefore root rot fungi decelerate the succession towards stone pine (Pinus cembra)-dominated forests.


    Publications:
    Bendel, Muriel 2006: The spread of root rot fungi in mountain pine stands in the Swiss National Park
    Diss., Naturwissenschaften, Eidgenössische Technische Hochschule ETH Zürich, Nr. 16307


    Last update: 12/16/16
    Source of data: ProClim- Research InfoSystem (1993-2020)
    Update the data of project: CH-2194

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