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Ecological factors affecting the recent Picea abies decline in Slovenia [Elektronski vir] : the importance of bedrock type and forest naturalnessKermavnar, Janez ; Kutnar, Lado ; Pintar, Anže MartinNorway spruce (Picea abies [L.] Karst.) has been at the centre of controversy for many decades. Recent evidence of its profound disturbance-induced damage and consequent stock depletions across ... forest landscapes in Europe has reinforced doubts regarding the sustainability and prospects of this tree species in the future. Like many other European countries, Slovenia has experienced significant Norway spruce mortality and a decrease in growing stock primarily as the result of several disturbance agents (bark beetle outbreaks, an ice storm, windthrows). We investigated a countrywide spruce growing stock decline based on data between 2010 and 2018. Particular focus was placed on identifying the main ecological drivers of this decline, namely geological conditions, climatic parameters, soil attributes, topographic factors and forest stand characteristics. The effects of potential predictors on the relative change (%) in spruce volume (m3 ha-1) during the period 2010-2018 were analysed with Generalized Additive Models. Based on a national dataset including forest compartments (n = 6355) with a spruce growing stock decline > 10%, we found mixed support for ecology-based hypotheses. While spruce decline responded to bedrock type as predicted (i.e., greater relative decline in carbonate compared to silicate compartments), higher forest naturalness (preservation of tree species composition) was not associated with a lower decline. Spruce decline was amplified by higher potential evapotranspiration and soil clay content but showed a strong negative relationship with spruce proportion in the year 2010. General trends along the gradients of other selected predictors (stoniness/rockiness and heat load index) were less pronounced. The results suggest that most of these ecological predictors interact with geology and forest naturalness in affecting Norway spruce decline. Our analysis reveals that bedrock type can play an important role due to its mitigating effects. However, forest naturalness is of secondary significance as intensified large-scale forest disturbances likely override its buffering potential.Source: IForest = I Forest [Elektronski časopis]. - ISSN 1971-7458 (Vol. 16, iss. 2, 2023, str. 105-115)Type of material - e-articlePublish date - 2023Language - englishCOBISS.SI-ID - 147892483
Author
Kermavnar, Janez |
Kutnar, Lado |
Pintar, Anže Martin
Topics
navadna smreka |
izbruhi podlubnikov |
žled |
geologija |
pedologija |
gozdne združbe |
Slovenija |
Norway Spruce |
bark beetle outbreaks |
ice storm |
soil-geology |
relationship |
tree species composition |
Slovenia
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Author | Kermavnar, Janez ; Kutnar, Lado ; Pintar, Anže Martin |
Title | Ecological factors affecting the recent Picea abies decline in Slovenia [Elektronski vir] : the importance of bedrock type and forest naturalness |
Publication date | 2023-03-29 |
COBISS.SI-ID | 147892483 |
Publication version in repository | Publisher's version |
Publication licence | Creative Commons Attribution 4.0 International |
Embargo | Immediate publication for public |
Project(s) from which the publication was funded
Title | Acronym | Project ID | Funder |
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Gozdna biologija, ekologija in tehnologija | P4-0107-2020 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
|
Spremembe gozdne vegetacije zaradi vplivov globalnih in lokalnih okoljskih sprememb v daljšem časovnem obdobju | Z4-4543 |
Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije |
|
Javna gozdarska služba | JGS | JGS |
Ministrstvo za kmetijstvo, gozdarstvo in prehrano |
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Kermavnar, Janez | 39085 |
Kutnar, Lado | 15108 |
Pintar, Anže Martin | 52108 |
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