Explanipedia

UAV-Based Multispectral Assessment of Wind-Induced Damage in Norway Spruce Crowns Open

Endijs Bāders, Andris Seipulis, Dārta Kaupe, Jordane Champion, Oskars Krišāns , et al. · 2025

Climate change has intensified the frequency and severity of forest disturbances globally, including windthrow, which poses substantial risks for both forest productivity and ecosystem stability. Rapid and precise assessment of wind-induce…

Trends in genetic diversity of silver birch: Insights from varied planting scenarios Open

Endijs Bāders, Pauls Zeltiņš, Didzis Elferts, Dainis Ruņǵis, Arnis Gailis , et al. · 2024

This study explores the impact of planting strategies on genetic diversity in silver birch (Betula pendula Roth) stands using simulation models. We examine the influence of different proportions of planted stands and the number of open-pol…

Bite Me: Bark Stripping Showed Negligible Effect on Volume Growth of Norway Spruce in Latvia Open

Agnese Anta Liepiņa, Sabīne Ieviņa, Endijs Bāders, Gundega Done, Roberts Matisons , et al. · 2024

Over the past few decades, increasing populations of cervid species in the Baltic region have reduced the quality and vitality of cultivated Norway spruce (Picea abies (L.) Karst.) stands. This study evaluated the effect of bark stripping …

The fate of remnant trees after wind disturbances in boreal and temperate forests Open

Kristiina Palm-Hellenurm, Endijs Bāders, Lee E. Frelich, Kajar Köster, Marek Metslaid , et al. · 2024

Trees that survive disturbances are important biological legacies that facilitate forests’ recovery and enhance their structural and species diversity, substantially contributing to the resilience of these ecosystems. The dynamic pattern o…

Recovery and resilience of European temperate forests after large and severe disturbances Open

Matteo Cerioni, Marek Brabec, Radek Bače, Endijs Bāders, Andrej Bončina , et al. · 2024

Recent observations of tree regeneration failures following large and severe disturbances, particularly under warm and dry conditions, have raised concerns about the resilience of forest ecosystems and their recovery dynamics in the face o…

Structural Heterogeneity of European Beech (Fagus sylvatica L.) Stands at Its Northernmost Limits Open

Diāna Jansone, Roberts Matisons, Viesturs Kārše, Endijs Bāders, Dārta Kaupe , et al. · 2023

The expansion of European beech to northeastern regions due to climate change is anticipated, especially if assisted migration techniques are employed. Marginal populations of European beech are exposed to unfavorable growing conditions th…

Tree biomass – a fragile carbon storage in old-growth birch and aspen stands in hemiboreal Latvia Open

Laura Ķēniņa, Didzis Elferts, Ieva Jaunslaviete, Endijs Bāders, Guntars Šņepsts , et al. · 2022

Birch (Betula pendula Roth, Betula pubescens Ehrh.) and European aspen (Populus tremula L.) stands dominate the deciduous forests of Northern Europe. Due to increasing forest protections, more deciduous stands will reach the old-growth sta…

Regularly Planted Rather Than Natural Understory of Norway Spruce (Picea abies H. Karst.) Contributes to the Individual Stability of Canopy Silver Birch (Betula pendula Roth.) Open

Oskars Krišāns, Roberts Matisons, Jānis Vuguls, Endijs Bāders, Steffen Rust , et al. · 2022

Forest plantations, particularly high-density planted stands, are considered to be more prone to wind damage compared to naturally regenerated stands. The wind resistance (mechanical stability) of plantations can, however, be improved by c…

THE DETECTION OF DISTURBANCE EFFECTS OF NORWAY SPRUCE (<i>PICEA ABIES</i> (L.) KARST.) IN UAV MULTISPECTRAL IMAGERY Open

Iveta Desaine, Endijs Bāders, Edžus Romāns, Oskars Krišāns, Andris Seipulis , et al. · 2022

This study analyses spectral separability of Norway spruce (Picea abies (L.) Karst.) trees several months after induction of mechanical damage (a simulated wind damage), and one year after the damage – at the beginning of vegetation season…

An Integration of Linear Model and ‘Random Forest’ Techniques for Prediction of Norway Spruce Vitality: A Case Study of the Hemiboreal Forest, Latvia Open

Endijs Bāders, Edžus Romāns, Iveta Desaine, Oskars Krišāns, Andris Seipulis , et al. · 2022

The increasing extreme weather and climate events have a significant impact on the resistance and resilience of Norway spruce trees. The responses and adaptation of individual trees to certain factors can be assessed through the tree breed…

SPECTRAL SEPARABILITY OF TREE DEFOLIATION DURING THE HETEROBASIDION ANNOSUM SPREADING Open

Endijs Bāders, Edžus Romans, Raitis Rieksts � Riekstins, Āris Jansons · 2022

Weather–Growth Responses Show Differing Adaptability of Scots Pine Provenances in the South-Eastern Parts of Baltic Sea Region Open

Roberts Matisons, Diāna Jansone, Endijs Bāders, Stefānija Dubra, Pauls Zeltiņš , et al. · 2021

Local adaptation and plasticity of growth play important roles in the adaptability of trees to changing conditions. Under accelerating climatic changes, the adaptive capacity of metapopulations can be exceeded, implying a necessity for ass…

South-Eastern Baltic Provenances of Scots Pine Show Heritable Weather-Growth Relationships Open

Roberts Matisons, Volker Schneck, Diāna Jansone, Endijs Bāders, Stefānija Dubra , et al. · 2021

The productivity of forests has been linked to the sensitivity of tree growth to meteorological conditions and their fluctuations, hence moderation of tree sensitivity is one of the goals for climate-smart forest management. For this, tree…

Trilemma of Nordic–Baltic Forestry—How to Implement UN Sustainable Development Goals Open

Lars Högbom, Dalia Abbas, Kęstutis Armolaitis, Endijs Bāders, Martyn N. Futter , et al. · 2021

Forests are the dominant land cover in Nordic–Baltic countries, and forestry, the management of forests for improved ecosystem-service (ES) delivery, is an important contributor to sustainability. Forests and forestry support multiple Unit…

Norway Spruce Survival Rate in Two Forested Landscapes, 1975–2016 Open

Endijs Bāders, Oskars Krišāns, Jānis Donis, Didzis Elferts, Ieva Jaunslaviete , et al. · 2020

The increasing frequency and severity of natural disturbances (e.g., storms and insect outbreaks) due to climate change are expected to reduce the abundance of Norway spruce stands in the European forests. Under such conditions, the assess…

Tree Damage by Ice Accumulation in Norway Spruce (Picea abies (L.) Karst.) Stands Regarding Stand Characteristics Open

Silva Šēnhofa, Juris Katrevičs, Andis Adamovičs, Kārlis Bičkovskis, Endijs Bāders , et al. · 2020

Freezing rain is a frequently occurring, but relatively rarely studied disturbance in Europe, although ice accumulation may occasionally cause severe damage for forestry. We aimed to characterize ice-accumulation damage to overstory trees …

Advance Regeneration of Norway Spruce and Scots Pine in Hemiboreal Forests in Latvia Open

Solveiga Luguza, Guntars Šņepsts, Jānis Donis, Iveta Desaine, Endijs Bāders , et al. · 2020

Continuous cover forestry (CCF) aims to emulate small natural disturbances and take advantage of natural regeneration. To implement these management practices successfully, knowledge of advance regeneration under the canopy in different co…

Comparison of Genetic Diversity in Naturally Regenerated Norway Spruce Stands and Seed Orchard Progeny Trials Open

Dainis Ruņǵis, Solveiga Luguza, Endijs Bāders, Vilnis Šķipars, Āris Jansons · 2019

Forest ecosystems in Europe are expected to experience changes in temperature and water regimes associated with increased risks of extreme environmental events and disasters. Genetic diversity and relatedness has been linked to resilience …

THE INTENSIVE MANAGEMENT OF NORWAY SPRUCE: A COMPROMISE BETWEEN FINANCIAL GAIN AND GENETIC DIVERSITY? Open

Solveiga Luguza, Endijs Bāders, Pauls Zeltiņš, Roberts Čakšs, Dainis Ruņǵis , et al. · 2019

INTRODUCTION Norway spruce (Picea abies (L.) Karst.) is a high-yielding commercial tree species grown in the Baltic sea region. It not only ensures timber production, but also provides a notable amount of crown branch biomass and a substa…

Recent land cover changes in Latvia Open

Endijs Bāders, Mārtiņš Lūkins, Juris Zariņš, Oskars Krišāns, Āris Jansons , et al. · 2018

Increase in use of biomass as renewable source of energy in Europe is tightly linked to the policies aimed at mitigation of climate changes i.e. reductions of greenhouse gas emissions.Both for assessment of the carbon sequestration and emi…

Characteristic of browsing damages in Norway spruce stands Open

Iveta Desaine, Endijs Bāders, Juris Katrevičs, Jānis Smilga, Jānis Jansons · 2018

Browsing damages are becoming more common due to almost doubling of population densities of cervids in Latvia during last 20 years; however, the figures are still lower than those observed in western and northern European countries.Consequ…

Imprints of management history on hemiboreal forest ecosystems in the Baltic States Open

Kalev Jõgiste, Lee E. Frelich, Diana Laarmann, Floortje Vodde, Endijs Bāders , et al. · 2018

In the Baltic States region, anthropogenic disturbances at different temporal and spatial scales mostly determine dynamics and development phases of forest ecosystems. We reviewed the state and condition of hemiboreal forests of the Baltic…

Effect of Stem Diameter, Genetics, and Wood Properties on Stem Cracking in Norway Spruce Open

Pauls Zeltiņš, Juris Katrevičs, Arnis Gailis, Tiit Maaten, Endijs Bāders , et al. · 2018

The choice of seed material (genetics) is one of the tools that can improve adaptation to the changing climate. Insufficient adaptation can result in a number of potential risks, including stem cracking. The goal of this study is to assess…

Landscape Diversity for Reduced Risk of Insect Damage: A Case Study of Spruce Bud Scale in Latvia Open

Endijs Bāders, Āris Jansons, Roberts Matisons, Didzis Elferts, Iveta Desaine · 2018

Spruce bud scale (Physokermes piceae (Schrnk.)) has gained attention due to recent outbreaks in the eastern Baltic Sea region—Poland, Lithuania, and Latvia. In the spring of 2010, it spread rapidly across Latvia, affecting large areas of N…

Carbon Pools in a Hemiboreal Over-Mature Norway Spruce Stands Open

Laura Ķēniņa, Didzis Elferts, Endijs Bāders, Āris Jansons · 2018

Old unmanaged forests are commonly assumed to be carbon neutral; however, there is still a lack of reference studies available to increase the recognition of carbon stock changes in these forests. Studies of old forest carbon storage from …

Pruning effect on Norway spruce (<i>Picea abies</i> (L.) Karst.) growth and quality Open

Endijs Bāders, Jānis Donis, Guntars Šņepsts, Andis Adamovičs, Āris Jansons · 2017

Pruning requires significant investment, therefore, the aim of the study was to characterize occlusion of branch wounds and changes in radial increment as well as frequency of browsing damages after pruning of Norway spruce ( Picea abies (…

Hemiboreal forest: natural disturbances and the importance of ecosystem legacies to management Open

Kalev Jõgiste, Henn Korjus, John A. Stanturf, Lee E. Frelich, Endijs Bāders , et al. · 2017

The condition of forest ecosystems depends on the temporal and spatial pattern of management interventions and natural disturbances. Remnants of previous conditions persisting after disturbances, or ecosystem legacies, collectively compris…

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