Nenad Potočić

Nenad Potočić
Croatian Forest Research Institute · Division for Forest Ecology

Dr

About

63
Publications
8,731
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
687
Citations

Publications

Publications (63)
Article
Full-text available
Science-based approaches in addressing future risks and challenges for forests require close collaboration among the communities operating different monitoring and research networks as well as experts in process and large-scale modelling. Results of the COST FP0903 conference which took place in October 2010 in Rome, reveal valuable results from di...
Article
Full-text available
We assessed the probability of three major natural hazards--windthrow, drought, and forest fire--for Central and South-Eastern European forests which are major threats for the provision of forest goods and ecosystem services. In addition, we analyzed spatial distribution and implications for a future oriented management of forested landscapes. For...
Article
Full-text available
As a part of a broader research into the nutrition of silver fir (Abies alba Mill.), the variation of calcium concentrations was investigated in needles and soil in two subsequent, climatologically diverse years. Statistically significant differences between plots were determined in Ca concentrations in soils. Concentrations of Ca in needles were s...
Article
Full-text available
European ash (Fraxinus excelsior) and narrow-leafed ash (F. angustifolia) are keystone forest tree species with a broad ecological amplitude and significant economic importance. Besides global warming both species are currently under significant threat by an invasive fungal pathogen that has been spreading progressively throughout the continent for...
Article
Full-text available
European beech (Fagus sylvatica L.) forests provide multiple essential ecosystem goods and ser-vices. The projected climatic conditions for the current century will significantly affect the vital-ity of European beech. The expected impact of climate change on forest ecosystems will be po-tentially stronger in southeast Europe than on the rest of th...
Article
Full-text available
ICP Forests has monitored the European forests since the late 1980s. This Brief describes temporal and spatial developments in tree defoliation, a widely adopted indicator of forest health and vitality. The defoliation data were obtained from the transnational crown condition surveys (ICP Forests Level I) carried out annually between 1990 and 2019...
Article
Full-text available
SAŽETAK Obična jela najoštećenija je i najugroženija vrsta crnogoričnog drveća u Republici Hrvatskoj. Odumiranje stabala obične jele pripisuje se različitim uzročnicima, stoga je cilj ovog istraživanja bio utvrditi mortalitet stabala obične jele po broju stabala i volumenu za različite skupine uzroka mortaliteta, među kojima su najvažniji bili klim...
Preprint
Full-text available
European ash (Fraxinus excelsior) and narrow-leafed ash (F. angustifolia) are keystone forest tree species in Europe with a broad ecological amplitude and significant economic importance. Besides global warming both species are currently under significant thread by an invasive fungal pathogen that has been progressively spreading throughout the con...
Article
Full-text available
Silver fir is one of the most threatened conifer species in Croatia, especially at the western edge of its spread in Croatian Dinarides, where the decline in fir trees has resulted in significant ecological and economic issues. The aim of this study was to determine, over an 18-year monitoring period, the relationships of silver fir crown defoliati...
Conference Paper
Soil erosion has a destructive effect on soil quality, structure, stability and texture, plant diversity, water dynamics and can degrade downstream water quality. Climatic, hydrological, topographic, geological and vegetation conditions, as well as the land use management are basic natural and anthropogenic factors largely responsible for erosion o...
Chapter
Full-text available
Criterion 2 considers and quantifies the exposure, risk, and impact on forest health posed by biotic and abiotic stressors. Environmental conditions, such as air and soil quality, influence the health and vitality of forest ecosystem and, subsequently, the provision of forest products and services. Appropriate management practices can improve the c...
Article
Full-text available
When studying forest responses to climate change it is important to consider tree nutrition. Enhanced atmospheric deposition of nitrogen, atmospheric carbon dioxide enrichment, and higher temperatures and longer growing seasons have stimulated tree growth in many parts of Europe. Increased tree growth can lead to increased nutrient demand. In fores...
Article
Full-text available
Interrelations of various common beech vitality indicators (crown defoliation, foliar chemistry, radial growth) as well as their possible dependencies on climatic conditions were investigated over the course of 12 years in a mature and healthy beech stand. Our results confirm the importance of temperature variables for defoliation, as high temperat...
Article
Full-text available
Considering the fragility of the Mediterranean environment, there is an increasing need to improve the knowledge of this forest environment. The aim of this study was to examine the effects of air pollution on the forest ecosystem’s condition by analyzing tree vitality. The study area was chosen to represent the most important and the most common s...
Article
Full-text available
Mast seeding, the synchronised occurrence of large amounts of fruits and seeds at irregular intervals, is a reproductive strategy in many wind-pollinated species. Although a series of studies have investigated mast year (MY) patterns in European forest tree species at the regional scale, there are few recent evaluations at a European scale on the i...
Article
Full-text available
When planting trees in urban environment, often there is a need for enhancing the soil quality, which can be achieved by the use of mineral fertilizers (for enhancing chemical soil properties) or soil conditioners (influencing both soil chemical and physical properties). Amur maple (Acer tataricum L. ssp. ginnala Maxim.) is a broadleaved bush or a...
Poster
Full-text available
This poster presents an ongoing research project which is carried out in the Mediterranean forests of Croatia. We show preliminary results and presents future tasks.
Presentation
Full-text available
When we talk about risks for Mediterranean forests we put forest fires on first place and on second storm winds. On European level damages caused by forest fires make 16% and storm winds 51% of all forest damages (assessment for period 2005-2010) but for Mediterranean part the ratio of damages caused by forest fires is much more higher than one cau...
Article
Full-text available
In this paper we investigated potential of portable chlorophyll meter CCM-200 (Opti-Sciences, Tyngsboro, MA, USA) to estimate total nitrogen concentration in different types of Pedunculate oak leaves. Research was conducted on 30 plants grown in field trial, during two vegetation periods (in years 2009 and 2010). Fertilization treatment (carried ou...
Technical Report
Full-text available
Activity under the UNECE Convention on Long-range Transboundary Air Pollution (CLRTAP) focuses on developing and implementing clean air policies across Europe and North America. There has been great success in reducing sulphur emissions over the past decades, but the concentration of nitrogen (N) compounds in the atmosphere, the level of N deposite...
Article
Full-text available
Key messageExceedance of critical limits in soil solution samples was more frequent in intensively monitored forest plots across Europe with critical loads for acidity and eutrophication exceeded compared to other plots from the same network. Elevated inorganic nitrogen concentrations in soil solution tended to be related to less favourable nutriti...
Article
Key messageAtmospheric deposition of nitrogen compounds and soil and foliar variables related to N deposition resulted important factors accounting for the variability of defoliation in European forest plots.ContextNitrogen (N) deposition has increased in the northern hemisphere because of anthropogenic-related emission of N compounds. Increased N...
Article
Full-text available
Key message Foliar phosphorus concentrations have decreased in Europe during the last 20 years. High atmospheric nitrogen deposition and climate change might be responsible for this trend. Continued decrease in foliar P concentrations might lead to reduced growth and vitality of beech forests in Europe. Context Increased forest soil acidification,...
Conference Paper
Full-text available
Biotope-related stress is mostly limked to the low availability of elementary plant requirements, such as water and nutrients. Reduced volume stock production of poplar clones 'M1҆' (P. ×canadensis) and 'S1-8' (Populus deltoides) in Slavonia (eastern part of Croatia) is attributed mainly to the recent lower water table along the Drava river. These...
Article
Full-text available
The response of forest ecosystems to increased atmospheric CO2 is constrained by nutrient availability. It is thus crucial to account for nutrient limitation when studying the forest response to climate change. The objectives of this study were to describe the nutritional status of the main European tree species, to identify growth limiting nutrien...
Article
Full-text available
The dynamics of nitrogen and phosphorus in current and one-year old needles of Silver fir (Abies alba Mill.) has been monitored during two vegetational seasons. The research was conducted on five plots marked by different edaphic and climatic conditions, and sampled trees had different defoliation degrees. The aim was to determine the nutritional s...
Article
Full-text available
Background and Purpose: Forest cultures in continental part of Croatia are mainly based on bracken-covered areas and moors on deserted agriculture soils and pastures. Successful afforestation i.e. establishment of forest cultures depends among other things on the understanding of habitats and ecology of forest trees. The choice of best species of f...
Article
Full-text available
In this paper the results of the experiment testing the influence of various growing substrates (Lithuanian peat, Humofin substrate, Stender A400 substrate) and slow-release fertilizers (Osmocote Exact Standard 5-6 M and 12-14 M)on the growth and physiological parameters of Common beech (Fagus sylvaticaL.) seedlings in a nursery and in the field co...
Data
Full-text available
In this article, several findings on socio-economic conditions derived from national reports and a web-based questionnaire are discussed and related to the changing role of forestry and the future forest policy development. A number of Central and South-eastern European countries taking part in a SEE-ERA-NET project ReForMan project (www.reforman.d...
Article
Full-text available
Austrian pine (Pinus nigra Arnold) was commonly planted during the last century in Croatia. Afforestation took place on various sites to prevent land from erosion and, or to restore forest vegetation, mainly in karst areas. Since 1992 the study on health status of Austrian pine plantations in Croatia revealed significant dieback symptoms in some ar...
Article
Full-text available
In the region of Gorski Kotar 6 sites (localities) of Silver fir (Abies alba Mill.) were selected to investigate the health status of trees, the infestation by common mistletoe (Viscum album L. ssp. abietis /Wiesb./ Abromeit), and to reveal the nutrition status of fir trees and mistletoes. Three localities were selected on soil sub-types based on s...
Article
Full-text available
The data of 45 soil profiles from a 16 × 16 km grid across Slo-venia was analysed to develop a local pedotransfer function (PTF) for bulk den-sity (ρb) estimation. In total, 106 soil horizons were considered. Concentration of organic carbon (OC) was found to be well correlated (r = -0.861, p < 0.001) with ρb. Two separate line segments were fitted...
Article
Full-text available
Although growing of conifer seedlings in containers is nothing new, our knowledge is deficient when it comes to various combinations of substrates, container types and different fertilizers and fertilizer doses, especially with tree species aimed at planting in the coastal zone of Croatia. This paper presents the results of the experiment testing t...
Article
Full-text available
In this paper the results of two nursery experiments dealing with the influence of preparation for foliar application “Hungavit” on the growth and development of common beech and pedunculate oak bare-root seedlings are given. The experiments were set up as randomized blocks with three treatments and three repetitions. A generally positive influence...
Article
Full-text available
In response to widespread concern that air pollution could affect forest condition, the International Co-operative Programme on the Assessment and Monitoring of Air Pollution Effects on Forests (ICP Forests) was established by the Convention on Long-range Transboundary Air Pollution (CLRTAP) under the United Nations Economic Commission for Europe i...
Article
Full-text available
In this article, several findings on socio-economic conditions derived from national reports and a web-based questionnaire are discussed and related to the changing role of forestry and the future forest policy development. A number of Central and South-eastern European countries taking part in a SEE-ERA-NET project ReForMan project (www.reforman.d...
Article
Full-text available
Within the framework of International Co-operative Programme on Assessment and Monitoring of Air Pollution Effects on Forests (ICP Forests), research and chemical analyses of plant material has been carried out in Croatia on seven intensive monitoring plots with typical forest communities. In order to monitor the reliability of methods of laborator...
Article
Full-text available
In this paper the results of the experiment testing the influence of various growing substrates (Lithuanian peat, Humofin substrate, Stender A400 substrate) and slow-release fertilizers (Osmocote Exact Standard 5-6 M and 12-14 M)on the growth and physiological parameters of Common beech (Fagus sylvaticaL.) seedlings in a nursery and in the field co...
Article
This article presents results of several studies in Middle, Eastern and Southeastern Europe on needs and application areas, desirable attributes and marketing potentials of forest management support tools. By comparing present and future application areas, a trend from sectoral planning towards landscape planning and integration of multiple stakeho...
Article
The large-scale dieback of Silver fir (Abies alba Mill.), present in Croatia in the past two decades, has led to atypical growth conditions for young Common beech (Fagus sylvatica L.) trees on beech-fir sites. This is in contradiction with recent forestry practice and ecological requirements of beech (skiophytic, drought sensitive). The aim of this...
Article
Full-text available
Background and Purpose: Common beech is a dominant broadleaved tree species in European forests, and also on the Medvednica massif. Since climate is a decisive factor in the development of a certain type of vegetation , it might have an equally important role in its survival. The influence of relief properties on the crown condition of common beech...
Article
Full-text available
Silver fir is the most widely distributed and the most important commercial conifer species in Croatia. However, it is also the most threatened. The first records of its dieback in Croatia date from the beginning of the 20 th century. Dieback has since evolved into a worrying phenomenon and a significant forestry problem. Dieback of silver fir is a...
Article
Full-text available
Background and Purpose: Common beech is a dominant broadleaved tree species in European forests, and also on the Medvednica massif. Since climate is a decisive factor in the development of a certain type of vegetation, it might have an equally important role in its survival. The influence of relief properties on the crown condition of common beech...
Article
Full-text available
Background and Purpose: From a variety of environmental factors that are thought to be a likely cause of dieback of forest tree species, climate prop-erties are surely among the most important. The fact that beech and fir forests on Velebit represent the most southern large complexes of these forests in Croatia makes them especially interesting in...
Article
Full-text available
The dynamics of nitrogen and phosphorus in current and one-year old needles of Silver fir (Abies alba Mill.) has been monitored during two vegetational seasons. The research was conducted on five plots marked by different edaphic and climatic conditions, and sampled trees had different defoliation degrees. The aim was to determine the nutritional s...
Article
Full-text available
The research on intensive monitoring plots (Level II) as a part and according to the methods of the International Co-operative Programme for Assessment and Monitoring of Air Pollution Effects on Forests (UN-ECE ICP Forests) has been conducted in Croatia since the year 1995. In this paper a comparison is given of data on foliar composition of Common...
Article
Full-text available
Research of crown condition between 1995 and 2004 in the Republic of Croatia showed an increase in the percentage of damage to all trees species. In comparison with 2003, moderate to severe damage to trees of all species increased by 3.6%, from 23.2% to 26.8% (fig. 15). Moderate to severe damage to broadleaves in comparison to previous years also i...
Article
Full-text available
Background and Purpose: The sulfur dioxide emitted from Plomin thermal power plant, Croatia, has been shown to have great influence on sulfur concentration in Black pine (Pinus nigra Arn.) needles. Since 1999 the emission of SO2 has been significantly lowered. Previous investigation (1) revealed that the lowering of S-concentrations in Black pine n...
Article
Full-text available
The aim of the research was to find the reasons for lawn and ornamental plants degradation at the Patriotic War Memorial Cemetery in Vukovar. For this purpose, three representative pedological profiles were opened, from which soil samples were taken for physical and chemical analyses. Seven average soil samples were also taken for determining soil...
Conference Paper
Peduncled oak (Quercus robur L.) represents the most valuable and most important species of forest trees in Croatia. With the practice of natural regeneration the forest soil is preserved as the most perfect and important part of the ecosystem, which by its physical and chemical properties differs from soils outside the forest. This paper, therefor...
Article
Full-text available
This paper presents research regarding the mutual relationship between intra-seasonal variations of tree stem diameter changes, changes of electrical resistance of cambial zone (ERCZ) and groundwater oscillations. Two groups consisting of ten common oak (Quercus robur L.) trees were selected, one group with crown damage status above (healthy trees)...
Article
Full-text available
In this paper the data on crown condition of forests in Croatia is presented for the five-year period 1999–2003, separately for all species, broadleaves, conifers and three most prominent tree species, pedunculate oak (Quercus robur L.), common beech (Fagus sylvatica L.) and silver fir (Abies alba Mill.). A comparison is made of the percentage of m...
Article
Full-text available
Background and Purpose: The impact of SO2 emitted from the Plomin thermal power plant (Croatia) was monitored for about fifteen years by measuring S-concentration in the needles of Black pine grown at different distances from the power plant. Since 1999 the emission of SO2 was significantly lowered, but expected decrease in S-concentrations in need...
Article
Full-text available
Concentration of S02 in the air is elevated near oil refineries and power plants burning coal, as well as in other industrial and urban areas. It has already been proven that the concentration of sulphur in plants is higher when the atmosphere is S0: -polluted. TE Ploniin 2 was put in operation at the end of year 1999. Diferrent to TE Plomin 1, it...

Network

Cited By

Projects

Projects (7)
Project
A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Response to Abiotic Stress and Climate Change". https://www.mdpi.com/journal/plants/special_issues/forest_ecophysiology Deadline for submissions: 16 January 2022
Project
The main goal of this project is to explore the impact of changing climate conditions on various indicators of beech vitality (crown defoliation, mineral nutrition, photosynthesis, radial growth), as well as their possible interrelations. We expect the results of this project to help interpret data from various large-scale forest monitoring networks and improve the integration of data from intensive and national monitoring programmes in terms of causes and effects.