Journal
ANNALS OF FOREST SCIENCE
Volume 69, Issue 5, Pages 557-567Publisher
SPRINGER FRANCE
DOI: 10.1007/s13595-011-0174-z
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Funding
- Research Institute Julich in the context of the Helmholtz Research Initiative Terrestrial Environmental Observatories
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The logging of several spruce plantations is planned for the next years in the Eifel National Park (Western Germany). To understand the ecological mechanisms of spontaneous forest regeneration that follows these impacts, it is crucial to investigate the species composition and functional diversity of the buried germinable seeds in those stands. We analysed the soil seed bank by germination method and characterised germination dynamics and distribution of seedlings throughout the samples according to a sigmoid model and cumulative curves, respectively. To compare the proportions of functional and syntaxonomical groups between seed bank and aboveground vegetation, we applied the Fisher's exact test. Additionally, we described the spatial distribution of the species in the seed bank according to semivariograms. The studied seed bank reached a density of about 5,300 seed m(-2). Most of the species detected in the seed bank are related to open vegetation, forest fringes and early successional stages of forest regeneration. In spite of a low floristic similarity between seed bank and aboveground vegetation, the functional and syntaxonomical composition is very similar. Further studies considering the distribution of seeds in the soil and the changes of the seed bank composition during the regeneration process are required.
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