Selection effects of air pollution on gene pools of Norway spruce, European silver fir and European beech

2001 ◽  
Vol 115 (3) ◽  
pp. 405-411 ◽  
Author(s):  
Roman Longauer ◽  
Dušan Gömöry ◽  
Ladislav Paule ◽  
David F Karnosky ◽  
Blanka Maňkovská ◽  
...  
Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 823
Author(s):  
Anna Zielonka ◽  
Marek Drewnik ◽  
Łukasz Musielok ◽  
Marcin K. Dyderski ◽  
Dariusz Struzik ◽  
...  

Forest ecosystems significantly contribute to the global organic carbon (OC) pool, exhibiting high spatial heterogeneity in this respect. Some of the components of the OC pool in a forest (woody aboveground biomass (wAGB), coarse root biomass (CRB)) can be relatively easily estimated using readily available data from land observation and forest inventories, while some of the components of the OC pool are very difficult to determine (fine root biomass (FRB) and soil organic matter (SOM) stock). The main objectives of our study were to: (1) estimate the SOM stock; (2) estimate FRB; and (3) assess the relationship between both biotic (wAGB, forest age, foliage, stand density) and abiotic factors (climatic conditions, relief, soil properties) and SOM stocks and FRB in temperate forests in the Western Carpathians consisting of European beech, Norway spruce, and silver fir (32 forest inventory plots in total). We uncovered the highest wAGB in beech forests and highest SOM stocks under beech forest. FRB was the highest under fir forest. We noted a considerable impact of stand density on SOM stocks, particularly in beech and spruce forests. FRB content was mostly impacted by stand density only in beech forests without any discernible effects on other forest characteristics. We discovered significant impacts of relief-dependent factors and SOM stocks at all the studied sites. Our biomass and carbon models informed by more detailed environmental data led to reduce the uncertainty in over- and underestimation in Cambisols under beech, spruce, and fir forests for mountain temperate forest carbon pools.


2021 ◽  
pp. 141-187
Author(s):  
H. Pretzsch ◽  
T. Hilmers ◽  
E. Uhl ◽  
M. del Río ◽  
A. Avdagić ◽  
...  

AbstractUnderstanding tree and stand growth dynamics in the frame of climate change calls for large-scale analyses. For analysing growth patterns in mountain forests across Europe, the CLIMO consortium compiled a network of observational plots across European mountain regions. Here, we describe the design and efficacy of this network of plots in monospecific European beech and mixed-species stands of Norway spruce, European beech, and silver fir.First, we sketch the state of the art of existing monitoring and observational approaches for assessing the growth of mountain forests. Second, we introduce the design, measurement protocols, as well as site and stand characteristics, and we stress the innovation of the newly compiled network. Third, we give an overview of the growth and yield data at stand and tree level, sketch the growth characteristics along elevation gradients, and introduce the methods of statistical evaluation. Fourth, we report additional measurements of soil, genetic resources, and climate smartness indicators and criteria, which were available for statistical evaluation and testing hypotheses. Fifth, we present the ESFONET (European Smart Forest Network) approach of data and knowledge dissemination. The discussion is focussed on the novelty and relevance of the database, its potential for monitoring, understanding and management of mountain forests toward climate smartness, and the requirements for future assessments and inventories.In this chapter, we describe the design and efficacy of this network of plots in monospecific European beech and mixed-species stands of Norway spruce, European beech, and silver fir. We present how to acquire and evaluate data from individual trees and the whole stand to quantify and understand the growth of mountain forests in Europe under climate change. It will provide concepts, models, and practical hints for analogous trans-geographic projects that may be based on the existing and newly recorded data on forests.


2018 ◽  
Vol 29 (4) ◽  
pp. 775-787 ◽  
Author(s):  
Marco Mina ◽  
Miren del Río ◽  
Markus O. Huber ◽  
Esther Thürig ◽  
Brigitte Rohner

2015 ◽  
Vol 166 (3) ◽  
pp. 147-158 ◽  
Author(s):  
Peter Brang ◽  
Sandra Hilfiker ◽  
Ulrich Wasem ◽  
Andreas Schwyzer ◽  
Thomas Wohlgemuth

Long-term research on storm areas demonstrates the potential and the limits of natural regeneration After windthrow, questions arise about the appropriate silvicultural management. Answers can be derived from long-term studies on 19 storm-damaged areas caused by Vivian (1990) and Lothar (1999), which encompass cleared, cleared and planted as well as uncleared subareas. Forest succession on these areas was studied using repeated regeneration inventories. Ten resp. 20 years after the storms, the resulting young forests were 3–12 m tall and had a stem density of 500 to 31,400 per ha. Many tree species grow in the storm areas, with climax species like European beech (in the lowlands) and Norway spruce (in high-altitude forests) being most frequent. Advance regeneration has only a small share of the young stands, since seedlings were scarce in the pre-storm stands. Regeneration is slightly more dense on cleared than on uncleared storm areas. The yearly increase in seedling density ranged from 25 to 4,000 trees per ha, with low values occurring mainly if dense vegetation of tall forbs, bramble or bracken covered the ground. The increase in density has fallen since the storms, and in thickets with high stem numbers, the regeneration density has even started to decrease. Pionieer trees as well as sycamore maple and ash grow fastest, and climax species like Norway spruce and silver fir slowest. For spruce, planting results in an advance of 1.0 to 2.4 m after 20 years in high montane storm areas; moreover, gaps, which are widespread in storm areas even 10 or 20 years after the storm event, can be avoided. On areas with total damage, cluster planting should be considered, in particular in protection forests and in cases with scarce advance regeneration, missing seed trees and dense ground vegetation.


2020 ◽  
Vol 66 (1) ◽  
pp. 23-36 ◽  
Author(s):  
Petr Mikulenka ◽  
Anna Prokůpková ◽  
Zdeněk Vacek ◽  
Stanislav Vacek ◽  
Daniel Bulušek ◽  
...  

AbstractNorway spruce (Picea abies [L.] Karst.) and silver fir (Abies alba Mill.) are main tree species of Central Europe that are currently highly vulnerable in times of global climate change. The research deals with the effect of climate and air pollution on radial growth of silver fir and Norway spruce in mixed age-varied (56 – 146 years) forests in the Jeseníky Protected Landscape Area, the Czech Republic. The objectives were to evaluate biodiversity, structure and production, specifically interaction of radial growth of fir and spruce to air pollution (SO2, NOX, tropospheric ozone) and climatic factors (precipitation, air temperature). Concentration of SO2 and NOX had negative effect on radial growth of fir, while radial growth of spruce was more negatively influenced by tropospheric ozone. Fir showed higher variability in radial growth and was more sensitive to climatic factors compared to spruce. On the other hand, fir was relatively adaptable tree species that regenerated very well when the pressure of stress factors subsided (air pollution load, Caucasian bark beetle, frost damage). Low temperature was a limiting factor of radial growth in the study mountainous area, especially for fir. Fir was significantly sensitive to late frost, respectively, spruce to winter desiccation and spring droughts with synergism of air pollution load. Generally, older forest stands were more negatively influenced by air pollution load and climatic extremes compared to young trees.


Author(s):  
Loïc Gillerot ◽  
David I. Forrester ◽  
Alessandra Bottero ◽  
Andreas Rigling ◽  
Mathieu Lévesque

2019 ◽  
Vol 65 (2) ◽  
pp. 129-144 ◽  
Author(s):  
Zdeněk Vacek ◽  
Stanislav Vacek ◽  
Jiří Slanař ◽  
Lukáš Bílek ◽  
Daniel Bulušek ◽  
...  

Abstract In time of climate change, close-to-nature silviculture is growing in importance as a tool for future forest management. The paper study the tree layer and natural regeneration of monospecific Norway spruce (Picea abies [L.] Karst.), trough mixed spruce-beech to dominant European beech (Fagus sylvatica L.) forests in Jizerské hory Mts., the Czech Republic. In the locality, shelterwood and selection system have been applied since 2000. The research objectives were to evaluate production parameters, structural diversity, species richness, natural regeneration dynamics and radial growth of individual tree species in relation to climatic factors and air pollution. The stand volume on permanent research plots amounted to 441 – 731 m3 ha−1 in initial stage of transformation. Natural regeneration showed high expansion of beech and decrease of spruce compared to mature tree species composition. Radial growth of spruce was in significant negative correlation with SO2 and NOX concentrations compared to no effect on beech increment. Moreover, spruce was more sensitive to significant years with extreme low radial growth. Beech was more stable in radial growth. Spruce was more resistant to air pollution and climatic stress in mixed stands. Low temperature was limiting factor of radial growth together with climate extremes (such as strong frosts and more frequent droughts) and biotic factors (bark beetle, beech scale). Close-to-nature management supporting admixed tree species should lead in future to diversification of stand structure toward higher species, spatial and age structure to mitigate negative effect of climatic change.


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