Browsing effects on stand development after fire at Tyresta National Park, Southern Sweden

Fire and browsing are two disturbance factors which greatly affect future stand development, yet the two have rarely been studied together in a boreal forest environment. A good opportunity for studying the combined effects of browsing and fire on stand development in a boreal forest environment was...

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Autor principal: Eriksson, Amanda
Formato: H1
Lenguaje:Inglés
Publicado: SLU/Dept. of Forest Ecology and Management 2010
Materias:
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author Eriksson, Amanda
author_browse Eriksson, Amanda
author_facet Eriksson, Amanda
author_sort Eriksson, Amanda
collection Epsilon Archive for Student Projects
description Fire and browsing are two disturbance factors which greatly affect future stand development, yet the two have rarely been studied together in a boreal forest environment. A good opportunity for studying the combined effects of browsing and fire on stand development in a boreal forest environment was provided by the 1999 fire in Tyresta National Park, where an exclosure was set up shortly after the fire. The objective of this study was to examine the influence of browsing on post-fire stand development. For this purpose, the browsing effects on tree seedlings were examined, inside and outside an exclosure (1 ha) in the burned area. The areas inside and outside the exclosure were each divided into a low and a high fertility site. Sample plots were established at each of these sites, and inventoried in 2002 and 2007. Dense seedling populations established after the fire with on average 31,000 Salix caprea and 10,000 Populus tremula per ha. Results show that species composition and mortality were not directly influenced by browsing, whereas browsing effects on height development and height distribution were great. Eight years after fire, the heights of dominant seedlings of P. tremula and S. caprea were nearly double in the fenced area compared to the un-fenced area. In order to limit browsing effects on deciduous plants, fencing or browsing refugia should be used.
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institution Swedish University of Agricultural Sciences
language Inglés
publishDate 2010
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spelling RepoSLU17012012-04-20T14:15:18Z Browsing effects on stand development after fire at Tyresta National Park, Southern Sweden Betets effekter på beståndsutvecklingen efter brand i Tyresta Nationalpark, södra Sverige Eriksson, Amanda Browsing effects Stand development Post-fire Exclosure Deciduous species Fire and browsing are two disturbance factors which greatly affect future stand development, yet the two have rarely been studied together in a boreal forest environment. A good opportunity for studying the combined effects of browsing and fire on stand development in a boreal forest environment was provided by the 1999 fire in Tyresta National Park, where an exclosure was set up shortly after the fire. The objective of this study was to examine the influence of browsing on post-fire stand development. For this purpose, the browsing effects on tree seedlings were examined, inside and outside an exclosure (1 ha) in the burned area. The areas inside and outside the exclosure were each divided into a low and a high fertility site. Sample plots were established at each of these sites, and inventoried in 2002 and 2007. Dense seedling populations established after the fire with on average 31,000 Salix caprea and 10,000 Populus tremula per ha. Results show that species composition and mortality were not directly influenced by browsing, whereas browsing effects on height development and height distribution were great. Eight years after fire, the heights of dominant seedlings of P. tremula and S. caprea were nearly double in the fenced area compared to the un-fenced area. In order to limit browsing effects on deciduous plants, fencing or browsing refugia should be used. SLU/Dept. of Forest Ecology and Management 2010 H1 eng https://stud.epsilon.slu.se/1701/
spellingShingle Browsing effects
Stand development
Post-fire
Exclosure
Deciduous species
Eriksson, Amanda
Browsing effects on stand development after fire at Tyresta National Park, Southern Sweden
title Browsing effects on stand development after fire at Tyresta National Park, Southern Sweden
title_full Browsing effects on stand development after fire at Tyresta National Park, Southern Sweden
title_fullStr Browsing effects on stand development after fire at Tyresta National Park, Southern Sweden
title_full_unstemmed Browsing effects on stand development after fire at Tyresta National Park, Southern Sweden
title_short Browsing effects on stand development after fire at Tyresta National Park, Southern Sweden
title_sort browsing effects on stand development after fire at tyresta national park, southern sweden
topic Browsing effects
Stand development
Post-fire
Exclosure
Deciduous species