Sonja Vospernik
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View article: Effects of soil parameters on radial stem growth of four spruce stands in Austria
Effects of soil parameters on radial stem growth of four spruce stands in Austria Open
Understanding tree growth in relation to environmental conditions is essential, particularly in the context of climate change, where rising temperatures, frequent droughts, and disturbances threaten forest health and productivity. This stu…
View article: Bark Stripping Damage Caused by Red Deer (Cervus elaphus L.): Inventory Design Using Hansen–Hurwitz and Horvitz–Thompson Approach
Bark Stripping Damage Caused by Red Deer (Cervus elaphus L.): Inventory Design Using Hansen–Hurwitz and Horvitz–Thompson Approach Open
This study investigates the use of adaptive cluster sampling (ACS) for estimating bark stripping damage in forests, employing the Hansen–Hurwitz (HH) and Horvitz–Thompson (HT) estimators. Through simulations, we analysed the total, summer,…
View article: Scaling dendroecological studies on oaks combining different sampling schemes along a regional climatic gradient
Scaling dendroecological studies on oaks combining different sampling schemes along a regional climatic gradient Open
View article: Divergent regional volume growth responses of Scots Pine and Oak stands to climate change in Europe
Divergent regional volume growth responses of Scots Pine and Oak stands to climate change in Europe Open
View article: Forest temperature buffering in pure and mixed stands: A high-resolution temporal analysis with generalized additive models
Forest temperature buffering in pure and mixed stands: A high-resolution temporal analysis with generalized additive models Open
View article: Effects of soil parameters of radial stem growth of four spruce stands in Austria
Effects of soil parameters of radial stem growth of four spruce stands in Austria Open
Understanding tree growth in relation to environmental conditions is essential, particularly in the context of climate change, where rising temperatures, frequent droughts, and disturbances threaten forest health and productivity. This stu…
View article: Comparing Traditional Methods and Modern Statistical Techniques for Tree Height Prediction
Comparing Traditional Methods and Modern Statistical Techniques for Tree Height Prediction Open
Forest mensuration is important to gain knowledge and information about forest stands. Because tree height often proves more difficult to measure than diameter, different statistical models are used for their estimation instead. In this pa…
View article: Can mixing Quercus robur and Quercus petraea with Pinus sylvestris compensate for productivity losses due to climate change?
Can mixing Quercus robur and Quercus petraea with Pinus sylvestris compensate for productivity losses due to climate change? Open
View article: Stand-level sampling designs for bark stripping caused by red deer (Cervus elaphus L.): simulation studies based on nine fully censused stands
Stand-level sampling designs for bark stripping caused by red deer (Cervus elaphus L.): simulation studies based on nine fully censused stands Open
Precise assessment of bark stripping damage is of high economic importance, since bark stripping makes wood unusable for saw timber and it is important for compensation payments for game damage. Bark stripping is clustered and decreases wi…
View article: Tree species growth of Quercus robur/Quercus petraea and Pinus sylvestris across Europe - dynamic sensitive equilibrium
Tree species growth of Quercus robur/Quercus petraea and Pinus sylvestris across Europe - dynamic sensitive equilibrium Open
Quercus robur/Quercus petraea and Pinus sylvestris are light demanding, drought resistant wide spread European tree species occupying a similar ecological niche on mesotrophic xeric and mesic sites. Increasing drought and heat-spells will …
View article: Soil water storage capacity and soil nutrients drive tree ring growth of six European tree species across a steep environmental gradient
Soil water storage capacity and soil nutrients drive tree ring growth of six European tree species across a steep environmental gradient Open
Tree growth depends on tree-intrinsic attributes, synecological interactions, atmospheric conditions and soil properties. While the influence of tree factors and climate are analysed in detail in many studies, the effect of soil properties…
View article: Evaluation of afforestations for avalanche protection with orthoimages using the random forest algorithm
Evaluation of afforestations for avalanche protection with orthoimages using the random forest algorithm Open
Afforestations provide cost-effective and environmentally friendly protection against natural hazards, compared to technical measures. In Austria, more than 3000 afforestation sites for hazard protection covering 9000 ha have been establis…
View article: Forest Temperature Buffering in Pure and Mixed Stands: A High-Resolution Temporal Analysis with Generalized Additive Models
Forest Temperature Buffering in Pure and Mixed Stands: A High-Resolution Temporal Analysis with Generalized Additive Models Open
View article: Sampling designs for bark stripping caused by red deer (Cervus elaphus L.): Simulation studies based on nine fully censused stands
Sampling designs for bark stripping caused by red deer (Cervus elaphus L.): Simulation studies based on nine fully censused stands Open
Precise assessment of bark stripping damage is of high economic importance, since bark stripping makes wood unusable for saw timber and it is the basis for compensation payments for game damage. Bark stripping is clustered and more frequen…
View article: Evaluation of high elevation afforestations
Evaluation of high elevation afforestations Open
High elevation afforestations provide cost-effective and environmentally friendly protection against natural hazards, compared to technical measures. In Austria, more than 3,000 high elevation afforestation sites covering 9,000 ha have bee…
View article: On the role of soil water storage capacity and soil nutrients on tree growth of selected tree species in Central Europe.
On the role of soil water storage capacity and soil nutrients on tree growth of selected tree species in Central Europe. Open
While numerous correlational studies on the impact of climatic variation on tree ring formation consider plant functional traits, masting cycles and stochastic disturbances, the role of soil properties is frequently neglected due to insuff…
View article: Insights in forest structural diversity indicators with machine learning: what is indicated?
Insights in forest structural diversity indicators with machine learning: what is indicated? Open
Indicator choice is a crucial step in biodiversity assessments. Forest inventories have the potential to overcome data deficits for biodiversity monitoring on large spatial scales which is fundamental to reach biodiversity policy targets. …
View article: Tree species growth response to climate in mixtures of Quercus robur/Quercus petraea and Pinus sylvestris across Europe - a dynamic, sensitive equilibrium
Tree species growth response to climate in mixtures of Quercus robur/Quercus petraea and Pinus sylvestris across Europe - a dynamic, sensitive equilibrium Open
View article: Emerging stability of forest productivity by mixing two species buffers temperature destabilizing effect
Emerging stability of forest productivity by mixing two species buffers temperature destabilizing effect Open
The increasing disturbances in monocultures around the world are testimony to their instability under global change. Many studies have claimed that temporal stability of productivity increases with species richness, although the ecological…
View article: With increasing site quality asymmetric competition and mortality reduces Scots pine (Pinus sylvestris L.) stand structuring across Europe
With increasing site quality asymmetric competition and mortality reduces Scots pine (Pinus sylvestris L.) stand structuring across Europe Open
View article: Insights in forest structural diversity indicators with machine learning: What is indicated?
Insights in forest structural diversity indicators with machine learning: What is indicated? Open
Indicator choice is a crucial step in biodiversity assessments. Forest inventories have potential to overcome data deficits for biodiversity monitoring on large spatial scales which is fundamental to reach biodiversity policy targets. This…
View article: Position, size, and spatial patterns of bark stripping wounds inflicted by red deer (Cervus elavus L.) on Norway spruce using generalized additive models in Austria
Position, size, and spatial patterns of bark stripping wounds inflicted by red deer (Cervus elavus L.) on Norway spruce using generalized additive models in Austria Open
Key message Bark stripping wounds by red deer ( Cervus elavus L.) were assessed on 9026 Norway spruce trees. Wound variables (length, width, area, relative width, height above ground, and angle) were analysed using generalized additive mod…
View article: With Increasing Site Quality Asymmetric Competition and Mortality Reduces Scots Pine (Pinus Sylvestris L.) Stand Structuring Across Europe
With Increasing Site Quality Asymmetric Competition and Mortality Reduces Scots Pine (Pinus Sylvestris L.) Stand Structuring Across Europe Open
View article: Simulating the effects of thinning and species mixing on stands of oak (Quercus petraea (Matt.) Liebl./Quercus robur L.) and pine (Pinus sylvestris L.) across Europe
Simulating the effects of thinning and species mixing on stands of oak (Quercus petraea (Matt.) Liebl./Quercus robur L.) and pine (Pinus sylvestris L.) across Europe Open
View article: Intra-annual diameter growth variation of six common European tree species in pure and mixed stands
Intra-annual diameter growth variation of six common European tree species in pure and mixed stands Open
Studies of intra-annual growth are particularly useful for understanding tree growth because of their high temporal resolution. This study was performed in Austria and included hourly band dendrometer data of 244 annual tree recordings fro…
View article: Basal area increment models accounting for climate and mixture for Austrian tree species
Basal area increment models accounting for climate and mixture for Austrian tree species Open
Forest trees exhibit a large variation in basal area increment, which depends on tree specific factors, inter-tree relations and the environment. Studying the effect of the above factors on tree growth is essential for forest ecology and f…
View article: Assessing the protective role of alpine forests against rockfall at regional scale
Assessing the protective role of alpine forests against rockfall at regional scale Open
Worldwide, mountain forests represent a significant factor in reducing rockfall risk over long periods of time on large potential disposition areas. While the economic value of technical protection measures against rockfall can be clearly …
View article: Seasonal, medium-term and daily patterns of tree diameter growth in response to climate
Seasonal, medium-term and daily patterns of tree diameter growth in response to climate Open
Tree growth is expected to be responsive to climatic drivers across a spectrum of temporal scales, ranging from yearly growth to daily water use and photosynthesis. Automatic dendrometers offer the potential to provide continuous high-reso…
View article: A Flexible Height–Diameter Model for Tree Height Imputation on Forest Inventory Sample Plots Using Repeated Measures from the Past
A Flexible Height–Diameter Model for Tree Height Imputation on Forest Inventory Sample Plots Using Repeated Measures from the Past Open
In this study, height–diameter relations were modeled using two different mixed model types for imputation of missing heights from longitudinal data. Model Type A had a hierarchical structure of sample plot-specific and measurement occasio…
View article: Climate-sensitive radial increment model of Norway spruce in Tyrol based on a distributed lag model with penalized splines for year-ring time series
Climate-sensitive radial increment model of Norway spruce in Tyrol based on a distributed lag model with penalized splines for year-ring time series Open
A novel methodological framework is presented for climate-sensitive modeling of annual radial stem increment using year-ring width time series. The approach is based on a generalized additive model with penalized regression splines togethe…