Andrej Ficko (Author), Joerg Roessiger (Author), Andrej Bončina (Author)

Abstract

An increase in ungulate abundance in Europe in recent decades has raised concerns for the survival of browse-sensitive tree species in its early life history stages. A possible strategy for mitigating the browsing-induced mortality of natural regeneration is to optimize silviculture. We used matrix population models parameterized for three types of Abies alba - Picea abies - Fagus sylvatica forests (3,183 permanent sample plots from three study areas in Slovenia, 39,717 ha), and a non-linear optimization to: (i) schedule optimal timing and intensity of logging in the next 100 years to increase the recruitment of Abies alba without intervening in the population of ungulates; and (ii) examine the influence of different natural recruitment rates on the potential for mitigating recruitment failure through silviculture optimization. The optimal management has required species-, growth- and diameter-specific logging, including intensive logging of large-diameter Abies alba in the first decades and strict conservation of recruits. The potential for mitigating recruitment failure through optimization increased progressively with natural recruitment rate and progressively at a decreasing rate with time. Optimizing silviculture was effective for maintaining Abies alba in stands exposed to low or moderate browsing pressures. Faced with chronic ungulate herbivory, forest managers should primarily focus on the reduction of herbivory and to a lesser extent on optimizing silviculture.

Keywords

continuous cover forestry;optimization;natural regeneration;recruitment;Abies alba;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL BF - Biotechnical Faculty
UDC: 630*23:630*91
COBISS: 5045158 Link will open in a new window
ISSN: 1971-7458
Views: 982
Downloads: 745
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Other data

Secondary language: Slovenian
Secondary keywords: raznomerni gozdovi;optimizacija;naravna obnova gozda;novačenje;Abies alba;
Type (COBISS): Not categorized
Pages: str. 227-236
Issue: ǂVol. ǂ11
Chronology: 2018
DOI: 10.3832/ifor2567-011
ID: 10926081