Ondřej Vostarek
A5075363218- Forest Ecology and Biodiversity Studies
- Ecology and Vegetation Dynamics Studies
- Tree-ring climate responses
- Forest ecology and management
- Plant Water Relations and Carbon Dynamics
- Forest Management and Policy
- Fire effects on ecosystems
- Lichen and fungal ecology
- Remote Sensing and LiDAR Applications
- Forest Insect Ecology and Management
- Remote Sensing in Agriculture
- Species Distribution and Climate Change
- Botany and Plant Ecology Studies
- Mycorrhizal Fungi and Plant Interactions
- Forest Biomass Utilization and Management
- Conservation, Biodiversity, and Resource Management
Czech University of Life Sciences Prague
2019-2024
Abstract Protecting structural features, such as tree‐related microhabitats (TreMs), is a cost‐effective tool crucial for biodiversity conservation applicable to large forested landscapes. Although the development of TreMs influenced by tree diameter, species, and vitality, relationships between age TreM profile remain poorly understood. Using tree‐ring‐based approach data set 8038 trees, we modeled effects age, site characteristics on richness occurrence across some most intact primary...
Abstract Carbon accounting in the land sector requires a reference level from which to calculate past losses of carbon and potential for gains using stock-based target. carrying capacity represented by stock primary forests is an ecologically-based that allows estimation mitigation derived protecting restoring increase their stocks. Here we measured collated tree inventory data at forest sites including research studies, literature inventories (7982 sites, 288,262 trees, 27 countries) across...
With accelerating environmental change, understanding forest disturbance impacts on trade-offs between biodiversity and carbon dynamics is of high socio-economic importance. Most studies, however, have assessed immediate or short-term effects disturbance, while long-term remain poorly understood. Using a tree-ring-based approach, we analysed the effect 250 years disturbances present-day indicators in primary forests. Disturbance legacies spanning centuries shaped contemporary co-benefits...
Abstract Estimates of historical disturbance patterns are essential to guide forest management aimed at ensuring the sustainability ecosystem functions and biodiversity. However, quantitative estimates various characteristics required in applications rare longer‐term studies. Thus, our objectives were (1) quantify past severity, patch size, stand proportion disturbed (2) test for temporal subregional differences these characteristics. We developed a comprehensive dendrochronological method...
In a world of accelerating changes in environmental conditions driving tree growth, tradeoffs between growth rate and longevity could curtail the abundance large old trees (LOTs), with potentially dire consequences for biodiversity carbon storage. However, influence tree-level on forest structure at landscape scales will also depend disturbances, which shape size age distribution, whether LOTs can benefit from improved growing due to climate warming. We analyzed temporal spatial variation...
Abstract Tree regeneration is a key demographic process influencing long‐term forest dynamics. It driven by climate, disturbances, biotic factors and their interactions. Thus, predictions of tree are challenging due to complex feedbacks along the wide climatic gradients covered most species. The stress gradient hypothesis (SGH) provides framework for assessing such across species ranges, suggesting that competition between trees more frequent under favourable conditions, whereas reduced...
Abstract Aims We examined differences in life span among the dominant tree species (spruce, Picea abies ; fir, Abies alba beech, Fagus sylvatica and maple, Acer pseudoplatanus ) across primary mountain forests of Europe. asked how disturbance history, lifetime growth patterns, environmental factors influence span. Locations Balkan Mountains, Carpathian Dinaric Mountains. Methods Annual ring widths from 20,600 cores were used to estimate spans, trends, history metrics. Mixed models examine...
Abstract Assessing the impacts of natural disturbance on functioning complex forest systems are imperative in context global change. The unprecedented rate contemporary species extirpations, coupled with widely held expectations that future intensity will increase warming, highlights a need to better understand how processes structure habitat availability ecosystems. Standardised typologies tree-related microhabitats (TreMs) have been developed facilitate assessments resource for multiple...
To enhance our understanding of forest carbon sequestration, climate change mitigation and drought impact on ecosystems, the availability high-resolution annual growth maps based tree-ring width (TRW) would provide a significant advancement to field. Site-specific characteristics, which can be approximated by Earth observation satellites (EOS), emerge as crucial drivers growth, influencing how translates into tree growth. EOS provides information surface reflectance related characteristics...
Abstract Natural disturbances change forest habitat quality for many species. As the extent and intensity of natural may increase under climate change, it is unclear how this can affect on different spatial scales. To support management tools policies aiming to prevent loss, we studied develops in long run depending disturbance severity using a space‐for‐time substitution approach. We explored effects time since (0–250 years) (20%–100% canopy removal) structure‐based indicators European...
Abstract Aim Natural disturbances influence forest structure, successional dynamics and consequently, the distribution of species through time space. We quantified long‐term impacts natural on lichen richness composition in primary mountain forests, with a particular focus occurrence endangered species. Location Ten spruce stands across five chains Western Carpathians, European hotspot biodiversity. Methods Living trees, snags downed logs were surveyed for epiphytic epixylic lichens 57...
Research Highlights: Past disturbances occurred naturally in primary forests the Southern Carpathians. High- and moderate-severity shaped present structure of these ecosystems, which regenerated successfully without forestry interventions. Background Objectives: Windstorms bark beetle outbreaks have recently affected large forest areas across globe, causing concerns that lie outside range natural variability ecosystems. This often led to salvage logging inside protected areas, one main...
Understanding temporal and spatial variations in historical disturbance regimes across intact, continuous, altitudinally diverse primary forest landscapes is extremely important to help forecast development adapt management an era of rapid environmental change. Because few complex remain Europe, previous research has largely described for individual types smaller isolated stands. We studied the largest, still relatively unexplored mountain landscape temperate Făgăraș Mountains Romania. To...
Quantitative estimates of historical disturbances are essential to guide forest management aimed at sustainability ecosystem functions and biodiversity. We quantified past disturbance severity, patch size, stand proportion disturbed in European primary mountain spruce forests using dendrochronology. found that continuous gradients from low- high-severity small- large-size events affected these forests. In addition the importance small events, moderate-scale moderate-severity were also common...
Under climate change, modelling forest productivity is gaining increasing attention since forests on the one hand contribute to change mitigation by carbon sequestration and provide wood as an important renewable resource, other increasingly suffer from extreme events such droughts, late-frosts, disturbances. Despite major advancements in tree-growth over past decade, we still lack observation-based (in contrast simulated) high-resolution, gridded growth products that could help a better...
Mountain forests in Europe have experienced substantially elevated rates of climate warming relative to global average trends. However, we only a limited understanding relationships between and growth dynamics juvenile trees, despite the importance early life-stages development forest ecosystems. We used an expansive, international network inventory plots examine mechanisms regulating potential two ecologically dominant tree species, Norway spruce European beech. time series annual radial...