Search results for: Tomáš Hlásny

Items from 1 to 19 out of 19 results

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The interacting effect of climate change and herbivory can trigger large‐scale transformations of European temperate forests

Laura Dobor, Marco Baldo, Lukáš Bílek, Ivan Barka, more

Global Change Biology > 30 > 2 > n/a - n/a

In many regions of Europe, large wild herbivores alter forest community composition through their foraging preferences, hinder the forest's natural adaptive responses to climate change, and reduce ecosystem resilience. We investigated a widespread European forest type, a mixed forest dominated by Picea abies, which has recently experienced an unprecedented level of disturbance across the continent...

article

Is salvage logging effectively dampening bark beetle outbreaks and preserving forest carbon stocks?

Laura Dobor, Tomáš Hlásny, Werner Rammer, Soňa Zimová, more

Journal of Applied Ecology > 57 > 1 > 67 - 76

Salvage logging is one of most frequently applied management responses to forest disturbances world‐wide. As forest disturbances are increasing, so too is the application of salvage logging, yet its effects on ecosystems remains incompletely understood. In the Norway spruce (Picea abies (L.) Karst.) forests of Europe, salvaging of windfelled trees is inter alia applied to reduce the risk of bark...

article

Choice of reference climate conditions matters in impact studies: Case of bias‐corrected CORDEX data set

Laura Dobor, Tomáš Hlásny

International Journal of Climatology > 39 > 4 > 2022 - 2040

Climate models have provided driving data for impact studies for decades. However, the uncertainties related to the use of such data have typically not been sufficiently considered. We investigate how CORDEX climate simulations, which were corrected for bias based on MESAN reanalysis data for the period of 1989–2010, match the gridded observational data set E‐OBS. Furthermore, we investigate whether...

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Projected shift of Köppen–Geiger zones in the central Europe: A first insight into the implications for ecosystems and the society

Petr Skalák, Aleš Farda, Pavel Zahradníček, Miroslav Trnka, more

International Journal of Climatology > 38 > 9 > 3595 - 3606

We examined a future change of Köppen–Geiger climate classification zones in central Europe in the 21st century using the high‐resolution (10 km) bias‐corrected simulations of two regional climate models following the IPCC SRES A1B emission scenario. Temperate oceanic climate (Cfb) will remain the dominant climate type in central Europe but it will extent into higher altitudes and replace boreal or...

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Felled trap trees as the traditional method for bark beetle control: Can the trapping performance be increased?

Jaroslav Holuša, Tomáš Hlásny, Roman Modlinger, Karolina Lukášová, more

Forest Ecology and Management > 2017 > 404 > C > 165-173

Felled trap trees have been traditionally used to control bark beetles in central Europe. There is, however, little research on the method and on factors affecting trap tree performance. We therefore evaluated the effect of felling date, tree diameter, site shading, and weather conditions on the pattern of trap tree infestation by bark beetles. An experiment was conducted at two localities with contrasting...

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Climatic drivers of forest productivity in Central Europe

Tomáš Hlásny, Jiří Trombik, Michal Bošeľa, Ján Merganič, more

Agricultural and Forest Meteorology > 2017 > 234-235 > C > 258-273

Climate is an important driver of forest health, productivity, and carbon cycle, but our understanding of these effects is limited for many regions and ecosystems. We present here a large-scale evaluation of climate effects on the productivity of three temperate tree species. We determine whether the National Forest Inventory data (NFI) collected in the Czech Republic (14,000 plots) and Slovakia (1,180...

article

Conversion of Norway spruce forests in the face of climate change: a case study in Central Europe

Tomáš Hlásny, Ivan Barka, Joerg Roessiger, Ladislav Kulla, more

European Journal of Forest Research > 2017 > 136 > 5-6 > 1013-1028

Steadily increasing damage to Norway spruce forests in Europe has caused researchers and managers to consider whether these forests can be converted to more stable ecosystems. In a central European mountain region, we investigated whether management systems (MSs) specified by regional stakeholders provide sound alternatives to the currently applied management. We used the forest model Sibyla to explore...

article

Forest management impacts on capercaillie (Tetrao urogallus) habitat distribution and connectivity in the Carpathians

Martin Mikoláš, Martin Tejkal, Tobias Kuemmerle, Patrick Griffiths, more

Landscape Ecology > 2017 > 32 > 1 > 163-179

Context Distribution and connectivity of suitable habitat for species of conservation concern is critical for effective conservation planning. Capercaillie (Tetrao urogallus), an umbrella species for biodiversity conservation, is increasingly threatened because of habitat loss and fragmentation. Objective We assessed the impact of drastic changes in forest management in the Carpathian Mountains,...

article

Crop planting date matters: Estimation methods and effect on future yields

Laura Dobor, Zoltán Barcza, Tomáš Hlásny, Tamás Árendás, more

Agricultural and Forest Meteorology > 2016 > 223 > C > 103-115

Productivity of arable lands highly depends on the management techniques and their timing. Climate change urges the need for adaptive management tools, such as methods for optimization of planting date (PD). In existing crop models PD is usually specified by the user as a fixed date or through a set of rules which depend on diverse environmental conditions. However, validated rules of PD calculation...

article

Future climate of the Carpathians: climate change hot-spots and implications for ecosystems

Tomáš Hlásny, Jiří Trombik, Laura Dobor, Zoltán Barcza, more

Regional Environmental Change > 2016 > 16 > 5 > 1495-1506

The Carpathians are the largest European mountain range and harbour exceptional biodiversity. However, recent and anticipated changes in climate along with rapid social and economic development suggest that the region’s values may not be sustained. We strived to identify the main regional climate change hot-spots and evaluate the distribution of climatically exposed land-use types and ecosystems....

article

Multi-decade patterns of gypsy moth fluctuations in the Carpathian Mountains and options for outbreak forecasting

Tomáš Hlásny, Jiří Trombik, Jaroslav Holuša, Karolina Lukášová, more

Journal of Pest Science > 2016 > 89 > 2 > 413-425

The gypsy moth is the most important defoliator of broadleaved forests in the Northern Hemisphere. We explored the patterns in the moth’s long-term dynamics and produced outbreak forecasts for seven countries located in central to southeastern Europe and extending into the Carpathian Mountains. We investigated how the outbreak periods and trends in the size of outbreak areas differ among the countries,...

article

Sustainable forest management in a mountain region in the Central Western Carpathians, northeastern Slovakia: the role of climate change

Tomáš Hlásny, Ivan Barka, Ladislav Kulla, Tomáš Bucha, more

Regional Environmental Change > 2017 > 17 > 1 > 65-77

European forestry is facing many challenges, including the need to adapt to climate change and an unprecedented increase in forest damage. We investigated these challenges in a Norway spruce-dominated mountain region in Central Europe. We used the model Sibyla to explore forest biomass production to the year 2100 under climate change and under two alternative management systems: the currently applied...

article

MODIS-based vegetation index has sufficient sensitivity to indicate stand-level intra-seasonal climatic stress in oak and beech forests

Tomáš Hlásny, Ivan Barka, Zuzana Sitková, Tomáš Bucha, more

Annals of Forest Science > 2015 > 72 > 1 > 109-125

Context Variation in photosynthetic activity of trees induced by climatic stress can be effectively evaluated using remote sensing data. Although adverse effects of climate on temperate forests have been subjected to increased scrutiny, the suitability of remote sensing imagery for identification of drought stress in such forests has not been explored fully. Aim The study seeks to evaluate...

article

Future carbon cycle in mountain spruce forests of Central Europe: Modelling framework and ecological inferences

Tomáš Hlásny, Zoltán Barcza, Ivan Barka, Katarína Merganičová, more

Forest Ecology and Management > 2014 > 328 > C > 55-68

Although mountain Norway spruce forests may act as powerful carbon (C) sinks, the complexity of climate change effects on their C cycle remains unclear. In the current study, we combined the simulations produced by the process-based model Biome-BGC and the empirical model SIBYLA in order to predict the future C cycle in the spruce-dominated mountain forest stand in Central Europe. Annual data for...

article

Persisting bark beetle outbreak indicates the unsustainability of secondary Norway spruce forests: case study from Central Europe

Tomáš Hlásny, Marek Turčáni

Annals of Forest Science > 2013 > 70 > 5 > 481-491

• Context Secondary Norway spruce forests in the Western Beskids are among the most damaged forests in Europe. Although spruce bark beetle (Ips typographus) has been recently causing large-scale damage to these forests, our understanding of I. typographus dynamics in this environment is inadequate for evaluating forest sustainability. • Aim This study aims to evaluate the patterns of damage caused...

article

Spatial modelling-based approach to phytogeographical regionalization using grassland vegetation data

Tomáš Hlásny, Ingrid Turisová

Central European Journal of Biology > 2012 > 7 > 2 > 318-326

We presented a methodology for drawing continuous boundaries in the landscape differentiating between regions with different floristic composition. A region in Central Slovakia covering 2,445 km² was investigated. Ecological indicator values for temperature (EIT) in 1,978 grassland polygons were analysed. Ordinary kriging was used to interpolate EIT across the study region. Lattice wombling was used...

article

Adaptation to common optimum in different populations of Norway spruce (Picea abies Karst.)

Dušan Gömöry, Roman Longauer, Tomáš Hlásny, Marián Pacalaj, more

European Journal of Forest Research > 2012 > 131 > 2 > 401-411

Responses of Norway spruce populations to climatic transfer, in terms of growth and survival, were analyzed on the basis of a provenance experiment derived from the international provenance test IUFRO 1964/1968. The experiment comprises a series of five trial plots situated at contrasting elevations ranging from 484 to 1,275 m a.s.l., with 11 provenances represented at all trial plots that were used...

article

Snow disturbances in secondary Norway spruce forests in Central Europe: Regression modeling and its implications for forest management

Tomáš Hlásny, Štěpán Křístek, Jaroslav Holuša, Jiří Trombik, more

Forest Ecology and Management > 2011 > 262 > 12 > 2151-2161

Snow is an important ecological factor limiting vegetation distribution, growth, and regeneration, and the importance of snow in the latitudes of Central Europe is expected to increase in the future. We assessed snow damage to secondary spruce stands (not of native provenance therefore not adapted to local conditions) in a mountainous region of 14500ha in Central Europe (Moravian–Silesian Beskids,...

article

Identification of phytogeographical borders using grassland vegetation data

Ingrid Turisová, Tomáš Hlásny

Biologia > 2010 > 65 > 4 > 630-638

The paper proposes a methodology of phytogeographical regionalisation using grassland vegetation data. The research area is located in the West Carpathians, in volcanic field with adjacent post-tectonic basins and valleys in the Central Slovakia. The applied techniques were variogram modelling, ordinary kriging and lattice wombling. Phi coefficient was used to determine the diagnostic species of proposed...

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