Optimizing silviculture in mixed uneven-aged forests to increase the recruitment of browse-sensitive tree species without intervening in ungulate population

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

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.

• Language: English
• Keywords: continuous cover forestry, optimization, natural regeneration, recruitment, Abies alba
• Work type: Not categorized
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Number of pages: Str. 227-236
• Numbering: Vol. 11
• PID: 20.500.12556/RUL-100774
• UDC: 630*23:630*91
• ISSN on article: 1971-7458
• DOI: 10.3832/ifor2567-011
• COBISS.SI-ID: 5045158
• Publication date in RUL: 13.04.2018

Record is a part of a journal

• Title: IForest
• Shortened title: IForest
• Publisher: SISEF
• ISSN: 1971-7458
• COBISS.SI-ID: 2513830

Licences

• License: CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
• Link: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Description: The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
• Licensing start date: 13.04.2018

Secondary language

• Language: Slovenian
• Keywords: raznomerni gozdovi, optimizacija, naravna obnova gozda, novačenje, Abies alba

Projects

• Funder: EC - European Commission
• Funding programme: FP7
• Project number: 289437
• Name: Advanced multifunctional forest management in European mountain ranges
• Acronym: ARANGE

• Funder: Other - Other funder or multiple funders
• Funding programme: Pahernik Foundation