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Eriksson, Amanda, 2010. Browsing effects on stand development after fire at Tyresta National Park, Southern Sweden. Second cycle, A1E. Umeå: SLU, Dept. of Forest Ecology and Management

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Abstract

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.

Main title:Browsing effects on stand development after fire at Tyresta National Park, Southern Sweden
Authors:Eriksson, Amanda
Supervisor:Granström, Anders
Examiner:Schimmel, Johnny
Series:Examensarbeten (SLU, Institutionen för skogens ekologi och skötsel)
Volume/Sequential designation:2010:14
Year of Publication:2010
Level and depth descriptor:Second cycle, A1E
Student's programme affiliation:SMJMP Master of Science in Forestry - Open Entrance 300 HEC
Department:(S) > Dept. of Forest Ecology and Management
Keywords:Browsing effects, Stand development, Post-fire, Exclosure, Deciduous species
URN:NBN:urn:nbn:se:slu:epsilon-2-457
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-2-457
Subjects:Forestry - General aspects
Forest injuries and protection
Language:English
Deposited On:19 Aug 2010 07:00
Metadata Last Modified:20 Apr 2012 14:15

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