Прегледај по Аутор "Matović, Bratislav"
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- СтавкаEmerging stability of forest productivity by mixing two species buffers temperature destabilizing effect(Wiley, 2022) del Río, Miren; Pretzsch, Hans; Ruiz-Peinad, Ricardo; Jactel, Hervé; Coll, Lluís; Löf, Magnus; Aldea, Jorge; Ammer, Christian; Avdagić, Admir; Barbeito, Ignacio; Bielak, Kamil; Bravo, Felipe; Brazaitis, Gediminas; Cerný, Jakub; Collet, Catherine; Condés, Sonia; Drössler, Lars; Fabrika, Marek; Heym, Michael; Holm, Stig-Olof; Hylen, Gro; Jansons, Aris; Kurylyak, Viktor; Lombardi, Fabio; Matović, Bratislav; Metslaid, Marek; Motta, Renzo; Nord-Larsen, Thomas; Nothdurft, Arne; den Ouden, Jan; Pach, Maciej; Pardos,Marta; Poeydebat, Charlotte; Ponette, Quentin; Pérot, Tomas; Reventlow, Ditlev Otto Juel; Sitko, Roman; Sramek, Vit; Steckel, Mathias; Svoboda, Miroslav; Verheyen, Kris; Vospernik, Sonja; Wolff, Barbara; Zlatanov, Tzvetan; Bravo-Oviedo, Andrés1. 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 fundamentals have mainly been investigated through diversity experiments. To adequately manage forest ecosystems, it is necessary to have a comprehensive understanding of the effect of mixing species on the temporal stability of productivity and the way in which it is influenced by climate conditions across large geographical areas. 2. Here, we used a unique dataset of 261 stands combining pure and two-species mixtures of four relevant tree species over a wide range of climate conditions in Europe to examine the effect of species mixing on the level and temporal stability of productivity. Structural equation modelling was employed to further explore the direct and indirect influence of climate, overyielding, species asynchrony and additive effect (i.e. temporal stability expected from the species growth in monospecific stands) on temporal stability in mixed forests. 3. We showed that by adding only one tree species to monocultures, the level (overyielding:+6%) and stability (temporal stability: +12%) of stand growth increased significantly. We identified the key effect of temperature on destabilizing stand growth, which may be mitigated by mixing species. We further confirmed asynchrony as the main driver of temporal stability in mixed stands, through both the additive effect and species interactions, which modify between-species asynchrony in mixtures in comparison to monocultures. 4. Synthesis and applications. This study highlights the emergent properties associated with mixing two species, which result in resource efficient and temporally stable production systems. We reveal the negative impact of mean temperature on temporal stability of forest productivity and how the stabilizing effect of mixing two species can counterbalance this impact. The overyielding and temporal stability of growth addressed in this paper are essential for ecosystem services closely linked with the level and rhythm of forest growth. Our results underline that mixing two species can be a realistic and effective nature-based climate solution, which could contribute towards meeting EU climate target policies.
- СтавкаEuropean beech stem diameter grows better in mixed than in mono‑specific stands at the edge of its distribution in mountain forests(Springer, 2021) Pretzsch, Hans; Hilmers, Torben; Uhl, Enno; Bielak, Kamil; Bosela, Michal; del Rio, Miren; Dobor, Laura; Forrester, David I.; Nagel, Thomas A.; Pach, Maciej; Avdagić, Admir; Bellan, Michal; Binder, Franz; Bončina, Andrej; Bravo, Felipe; de‑Dios‑García, Javier; Dinca, Lucian; Drozdowski, Stanisław; Giammarchi, Francesco; Hoehn,Maria; Ibrahimspahić, Aida; Jaworski, Andrzej; Klopčič, Matija; Kurylyak, Viktor; Lévesque, Mathieu; Lombardi, Fabio; Matović, Bratislav; Ordóñez, Cristóbal; Petráš, Rudolf; Rubio‑Cuadrado, Alvaro; Stojanovic, Dejan; Skrzyszewski, Jerzy; Stajić, Branko; Svoboda, Mirolav; Versace, Soraya; Zlatanov, Tzvetan; Tognetti, RobertoRecent studies show that several tree species are spreading to higher latitudes and elevations due to climate change. European beech, presently dominating from the colline to the subalpine vegetation belt, is already present in upper montane subalpine forests and has a high potential to further advance to higher elevations in European mountain forests, where the temperature is predicted to further increase in the near future. Although essential for adaptive silviculture, it remains unknown whether the upward shift of beech could be assisted when it is mixed with Norway spruce or silver fir compared with mono-specific stands, as the species interactions under such conditions are hardly known. In this study, we posed the general hypotheses that the growth depending on age of European beech in mountain forests was similar in mono-specific and mixed-species stands and remained stable over time and space in the last two centuries. The scrutiny of these hypotheses was based on increment coring of 1240 dominant beech trees in 45 plots in mono-specific stands of beech and in 46 mixed mountain forests. We found that (i) on average, mean tree diameter increased linearly with age. The age trend was linear in both forest types, but the slope of the age–growth relationship was higher in mono-specific than in mixed mountain forests. (ii) Beech growth in mono-specific stands was stronger reduced with increasing elevation than that in mixed-species stands. (iii) Beech growth in mono-specific stands was on average higher than beech growth in mixed stands. However, at elevations > 1200 m, growth of beech in mixed stands was higher than that in mono-specific stands. Differences in the growth patterns among elevation zones are less pronounced now than in the past, in both mono-specific and mixed stands. As the higher and longer persisting growth rates extend the flexibility of suitable ages or size for tree harvest and removal, the longer-lasting growth may be of special relevance for multi-aged silviculture concepts. On top of their function for structure and habitat improvement, the remaining old trees may grow more in mass and value than assumed so far.
- СтавкаGrowth response of different tree species (oaks, beech and pine) from SE Europe to precipitation over time(Institute of Dendrology, Polish Academy of Sciences, 2018) Stojanović, Dejan B.; Levanič, Tom; Matović, Bratislav; Stjepanović, Stefan; Orlović, SašaChanging climatic conditions can have various consequences for forest ecosystems, from increasing frequencies of forest fires, ice and windstorm events to pathogen outbreaks and mass mortalities. The Standardized Precipitation Index (SPI) was chosen for the evaluation of drought impact on the radial growth of trees after extensive preliminary testing of various calculated monthly climate parameters from the CARPATCLIM database. SPI was calculated for periods between 3 and 36 months for different sites (lowland and mountainous parts of Serbia, Southeast Europe), from which Quercus robur, Q. cerris, Fagus sylvatica and Pinus sylvestris samples were acquired. Bootstrapped Pearson’s correlations between SPI monthly indices and radial growth of tree species were calculated. We found that 12-month SPI for summer months may be a good predictor of positive and negative growth of different species at different sites. The strongest positive correlations for five of six tree-ring width chronologies were between 12-month June and 14-month September SPI, which implies that high growth rates can be expected when the autumn of the previous year, and winter, spring and summer of the current year, are well supplied with precipitation, and vice versa (low precipitation in given period/low growth rates).
- СтавкаQuantifying Forest Cover Loss as a Response to Drought and Dieback of Norway Spruce and Evaluating Sensitivity of Various Vegetation Indices Using Remote Sensing(MDPI, 2024) Miletić, Boban R.; Matović, Bratislav; Orlović, Saša; Gutalj, Marko; Ðorem, Todor; Marinković, Goran; Simović, Srđan; Dugalić, Mirko; Stojanović, Dejan B.The Norway spruce is one of the most important tree species in Europe. This tree species has been put under considerable pressure due to the ongoing impacts of climate change. Meanwhile, frequent droughts and pest outbreaks are reported as the main reason for its dieback, resulting in severe forest cover loss. Such was the case with Norway spruce forests within the Kopaonik National Park (NP) in Serbia. This study aims to quantify, spatially and temporally, forest cover loss and to evaluate the sensitivity of various vegetation indices (VIs) in detecting drought-induced response and predicting the dieback of Norway spruce due to long-lasting drought effects in the Kopaonik NP. For this purpose, we downloaded and processed a large number of Landsat 7 (ETM+), Landsat 8 (OLI), and Sentinel 2 (MSI) satellite imagery acquired from 2009 to 2022. Our results revealed that forest cover loss was mainly driven by severe drought in 2011 and 2012, which was later significantly influenced by bark beetle outbreaks. Furthermore, various VIs proved to be very useful in monitoring and predicting forest health status. In summary, the drought-induced response detected using various VIs provides valuable insights into the dynamics of forest cover change, with implications for monitoring and conservation efforts of Norway spruce forests in the Kopaonik NP.
- СтавкаQuantifying Forest Cover Loss as a Response to Drought and Dieback of Norway Spruce and Evaluating Sensitivity of Various Vegetation Indices Using Remote Sensing(MDPI, 2024) Miletić, Boban R.; Matović, Bratislav; Orlović, Saša; Gutalj, Marko; Ðorem, Todor; Marinković, Goran; Simović, Srđan; Dugalić, Mirko; Stojanović, Dejan B.The Norway spruce is one of the most important tree species in Europe. This tree species has been put under considerable pressure due to the ongoing impacts of climate change. Meanwhile, frequent droughts and pest outbreaks are reported as the main reason for its dieback, resulting in severe forest cover loss. Such was the case with Norway spruce forests within the Kopaonik National Park (NP) in Serbia. This study aims to quantify, spatially and temporally, forest cover loss and to evaluate the sensitivity of various vegetation indices (VIs) in detecting drought-induced response and predicting the dieback of Norway spruce due to long-lasting drought effects in the Kopaonik NP. For this purpose, we downloaded and processed a large number of Landsat 7 (ETM+), Landsat 8 (OLI), and Sentinel 2 (MSI) satellite imagery acquired from 2009 to 2022. Our results revealed that forest cover loss was mainly driven by severe drought in 2011 and 2012, which was later significantly influenced by bark beetle outbreaks. Furthermore, various VIs proved to be very useful in monitoring and predicting forest health status. In summary, the drought-induced response detected using various VIs provides valuable insights into the dynamics of forest cover change, with implications for monitoring and conservation efforts of Norway spruce forests in the Kopaonik NP.
- СтавкаThe Impact of Adverse Weather and Climate on the Width of European Beech (Fagus sylvatica L.) Tree Rings in Southeastern Europe(MDPI, 2018) Stjepanović, Stefan; Matović, Bratislav; Stojanović, Dejan; Lalić, Branislava; Levanič, Tom; Orlović, Saša; Gutalj, MarkoEuropean beech (Fagus sylvatica L.) is the most important deciduous tree species in Europe. According to different climate scenarios, there is a relatively high probability of a massive decline in and loss of beech forests in southern Europe and in the southern part of central Europe. Thus, the authors of this study explored the dynamics of tree diameter increments and the influence of extremely dry years on the width of tree rings. This study used dendroecological methods to analyze the growth and diameter increments of European beech trees at locations in Serbia and the Republic of Srpska. The sampling was conducted along the vertical distribution of beech forests, at five sites at the lower limit of the distribution, at five optimal sites of the distribution, and at five sites at the upper limit of the distribution. Long-term analyses indicate that dry conditions during a growing season can reduce tree-ring width, but a reduction in tree growth can be expected as a result of more than one season of unfavorable conditions. Low temperatures in autumn and winter and prolonged winters can strongly affect upcoming vegetation and reduce tree development even under normal thermal conditions during a growing season
- СтавкаThe potential impact of climate change on the distribution of key tree species in Serbia under RCP4.5 and RCP 8.5 scenarios(2021) Miletić, Boban; Orlović, Saša; Lalić, Branislava; Đurđević, Vladimir; Vujadinović Mandić, Mirjam; Vuković, Ana; Gutalj, Marko; Stjepanović, Stefan; Matović, Bratislav; Stojanović, Dejan B.The survival of forest tree species within certain areas of their distributions is in question due to the increasing occurrence of disturbances and degradation processes in forest ecosystems due to climate change. The aim of this paper is to predict changes in the spatial distribution of the ten most important tree species in Serbia (European beech, Pedunculate oak, Austrian oak, Hungarian oak, Sessile oak, Narrow-leafed ash, Silver fir, Norway spruce, Black and Scots pine) using climate indices (Forestry Aridity Index, FAI and Ellenberg Quotient, EQ) with up-to-date climate observations (E-OBS, covering the time period 1990-2019) and projections of future climate conditions (RCP 4.5 and RCP 8.5 scenarios, split into two time periods 2041-2070, 2071-2100). The computation of the area under the receiver operating characteristic (ROC) curves has shown that both FAI and EQ have a “fair” to “excellent” ability to predict the occurrence of five out of ten species (European beech, Silver fir, Norway spruce, Black and Scots pine), with EQ having a slightly better predicting ability. EQ-based projections from mid (2041-2070) to late 21st century (2071-2100) under RCP 4.5 predict that reduction rates will not exceed 25%. Similar reduction rates are given by FAI-based projections until 2070, while rates increase to approximately 35% towards the end of this century. For RCP 8.5, FAI-based projections are significantly worse than EQ-based projections. Irrespective of the used index, projections until 2070 suggest that 55- 75% of existing habitats will remain intact. Towards the end of the century, however, our analysis indicate that 75-85% (EQ) to 90-100% (FAI) of the five analyzed species habitats, will be found outside of their current climate space.
- СтавкаThe productivity of mixed mountain forests comprised of Fagus sylvatica, Picea abies, and Abies alba across Europe(2019) Hilmers, Torben; Avdagić, Admir; Bartkowicz, Leszek; Bielak, Kamil; Binder, Franz; Bončina, Andrej; Dobor, Laura; Forrester, David I.; Hobi, Martina L.; Ibrahimspahić, Aida; Jaworski, Andrzej; Klopčič, Matija; Matović, Bratislav; Nagel, Thomas A.; Petráš, Rudolf; del Rio, Miren; Stajić, Branko; Uhl, Enno; Zlatanov, Tzvetan; Tognetti, Roberto; Pretzsch, HansMixed mountain forests of European beech (Fagus sylvatica L.), Norway spruce (Picea abies (L.) Karst), and silver fir (Abies alba Mill.) cover a total area of more than 10 million hectares in Europe. Due to altitudinal zoning, these forests are particularly vulnerable to climate change. However, as little is known about the long-term development of the productivity and the adaptation and mitigation potential of these forest systems in Europe, reliable information on productivity is required for sustainable forest management. Using generalized additive mixed models this study investigated 60 long-term experimental plots and provides information about the productivity of mixed mountain forests across a variety of European mountain areas in a standardized way for the first time. The average periodic annual volume increment (PAI) of these forests amounts to 9.3 m3ha−1y−1. Despite a significant increase in annual mean temperature the PAI has not changed significantly over the last 30 years. However, at the species level, we found significant changes in the growth dynamics. While beech had a PAI of 8.2 m3ha−1y−1 over the entire period (1980–2010), the PAI of spruce dropped significantly from 14.2 to 10.8 m3ha−1y−1, and the PAI of fir rose significantly from 7.2 to 11.3 m3ha−1y−1. Consequently, we observed stable stand volume increments in relation to climate change.
- СтавкаThe productivity of mixed mountain forests comprised of Fagus sylvatica, Picea abies, and Abies alba across Europe(2019) Hilmers, Torben; Avdagić, Admir; Bartkowicz, Leszek; Bielak, Kamil; Binder, Franz; Bončina, Andrej; Dobor, Laura; Forrester, David I.; Hobi, Martina L.; Ibrahimspahić, Aida; Jaworski, Andrzej; Klopčič, Matija; Matović, Bratislav; Nagel, Thomas A.; Petráš, Rudolf; del Rio, Miren; Stajić, Branko; Uhl, Enno; Zlatanov, Tzvetan; Tognetti, Roberto; Pretzsch, HansMixed mountain forests of European beech (Fagus sylvatica L.), Norway spruce (Picea abies (L.) Karst), and silver fir (Abies alba Mill.) cover a total area of more than 10 million hectares in Europe. Due to altitudinal zoning, these forests are particularly vulnerable to climate change. However, as little is known about the long-term development of the productivity and the adaptation and mitigation potential of these forest systems in Europe, reliable information on productivity is required for sustainable forest management. Using generalized additive mixed models this study investigated 60 long-term experimental plots and provides information about the productivity of mixed mountain forests across a variety of European mountain areas in a standardized way for the first time. The average periodic annual volume increment (PAI) of these forests amounts to 9.3 m3ha−1y−1. Despite a significant increase in annual mean temperature the PAI has not changed significantly over the last 30 years. However, at the species level, we found significant changes in the growth dynamics. While beech had a PAI of 8.2 m3ha−1y−1 over the entire period (1980–2010), the PAI of spruce dropped significantly from 14.2 to 10.8 m3ha−1y−1, and the PAI of fir rose significantly from 7.2 to 11.3 m3ha−1y−1. Consequently, we observed stable stand volume increments in relation to climate change
- СтавкаWith increasing site quality asymmetric competition and mortality reduces Scots pine (Pinus sylvestris L.) stand structuring across Europe(Elsevier, 2022) Pretzsch, Hans; Bravo-Oviedo, Andr´es; Hilmers, Torben; Ruiz-Peinado, Ricardo; Coll, Lluís; L¨of, Magnus; Ahmed, Shamim; Aldea, Jorge; Ammer, Christian; Avdagić, Admir; Barbeito, Ignacio; Bielak, Kamil; Bravo, Felipe; Brazaitis, Gediminas; Cerný, Jakub; Collet, Catherine; Dr¨ossler, Lars; Fabrika, Marek; Heym, Michael; Holm, Stig-Olof; Hylen, Gro; Jansons, Aris; Kurylyak, Viktor; Lombardi, Fabio; Matović, Bratislav; Metslaid, Marek; Motta, Renzo; Nord-Larsen, Thomas; Nothdurft, Arne; Ord´o˜nez, Crist´obal; Ouden, Jan den; Pach, Maciej; Pardos, Marta; Ponette, Quentin; P´erot, Tomas; Reventlow, Ditlev Otto Juel; Sitko, Roman; Sramek, Vit; Steckel, Mathias; Svoboda, Miroslav; Uhl, Enno; Verheyen, Kris; Vospernik, Sonja; Wolff, Barbara; Zlatanov, Tzvetan; del Río, MirenHeterogeneity of structure can increase mechanical stability, stress resistance and resilience, biodiversity and many other functions and services of forest stands. That is why many silvicultural measures aim at enhancing structural diversity. However, the effectiveness and potential of structuring may depend on the site conditions. Here, we revealed how the stand structure is determined by site quality and results from site-dependent partitioning of growth and mortality among the trees. We based our study on 90 mature, even-aged, fully stocked monocultures of Scots pine (Pinus sylvestris L.) sampled in 21 countries along a productivity gradient across Europe. A mini-simulation study further analyzed the site-dependency of the interplay between growth and mortality and the resulting stand structure. The overarching hypothesis was that the stand structure changes with site quality and results from the site-dependent asymmetry of competition and mortality. First, we show that Scots pine stands structure across Europe become more homogeneous with increasing site quality. The coefficient of variation and Gini coefficient of stem diameter and tree height continuously decreased, whereas Stand Density Index and stand basal area increased with site index. Second, we reveal a site-dependency of the growth distribution among the trees and the mortality. With increasing site index, the asymmetry of both competition and growth distribution increased and suggested, at first glance, an increase in stand heterogeneity. However, with increasing site index, mortality eliminates mainly small instead of all-sized trees, cancels the size variation and reduces the structural heterogeneity. Third, we modelled the site-dependent interplay between growth partitioning and mortality. By scenario runs for different site conditions, we can show how the site-dependent structure at the stand level emerges from the asymmetric competition and mortality at the tree level and how the interplay changes with increasing site quality across Europe. Our most interesting finding was that the growth partitioning became more asymmetric and structuring with increasing site quality, but that the mortality eliminated predominantly small trees, reduced their size variation and thus reversed the impact of site quality on the structure. Finally, the reverse effects of mode of growth partitioning and mortality on the stand structure resulted in the highest size variation on poor sites and decreased structural heterogeneity with increasing site quality. Since our results indicate where heterogeneous structures need silviculture interventions and where they emerge naturally, we conclude that these findings may improve system understanding and modelling and guide forest management aiming at structurally rich forests.