scholarly journals Forest ecosystems vitality monitoring (ICP forests, Level I) with special emphasis to the affected part of the sample trees in the Republic of Serbia

2020 ◽  
pp. 81-92
Author(s):  
Renata Gagić-Serdar ◽  
Tomislav Stefanović ◽  
Ilija Đorđević ◽  
Goran Češljar ◽  
Miroslava Marković ◽  
...  

Trees condition on the sample plots of the ICP forests, Level I, is especially considered and monitored by the typically damaged and affected part of the tree on which it occurs. Due to the need to enter unique data for the measured parameters (visible damages), their codes are assigned for each damage. These are the results from Sample plots, Level I, based on the ICP methodology. The results are entered into a single database for all participating countries. Infested assimilation organs - leaves or needles are direct indicators of the condition of the trees. The most common damage to leaves is caused by miners, gnats, beetles, and insects that totally bite the leaves so parts of the leaves are completely missing (Lymantria dispar L.). The leaves are mined by Stigmellidae, Gracillariidae, Cynipidae forming galls; there are also damages from the early oak defoliators Geometridae and Tortricidae. Apart from defoliators, the most common are xylophagous insects (for example, bark beetles) as well as root pests. The fungi that most commonly occur on the leaves are oak powdery mildew (Erysiphe alphitoides) and Rhytisma acerinum (which attacks species of the genus Acer). Other damages that occur are verticillium wilt (diseases of the conducting vessels), beech bark disease, then rot of the appendix, trunk, and branches. The paper presents the observed damage and diseases on the experimental plots of the ICP forests, Level I, in Serbia, according to the parts of the tree where they were discovered.

2015 ◽  
pp. 39-61
Author(s):  
Renata Gagić-Serdar ◽  
Tomislav Stefanović ◽  
Goran Češljar ◽  
Svetlana Bilibajkić ◽  
Radovan Nevenić ◽  
...  

In 2015 research observations of permanent monitoring of forests in the Republic of Serbia on permanent experimental plots were carried out in accordance with the Instructions of the International Cooperative Programme on Forest Condition Monitoring and data were collected for the necessary analyses. Experimental fields (FSP) are systematically arranged in 16x16 km or 4 x 4 km grid systems. Basic parameters evaluated in the plots were: presence of pests, phytopathological changes, as well as of other types and causes of forest damage. The aim of this paper was to correlate these factors that affect the vitality of forests and analyses of adverse influences affecting the forest ecosystems, the degree of defoliation and color changes (chlorosis on forest vegetation), and above all, the extent of damage to forests in Serbia in 2015.


2017 ◽  
pp. 41-56
Author(s):  
Tomislav Stefanović ◽  
Renata Gagić-Serdar ◽  
Ilija Đorđević ◽  
Goran Češljar ◽  
Natalija Momirović ◽  
...  

Project of forests condition monitoring (ICP Forests) operates as an international European project in which, on grid of ICP sample plots (bioindication points) condition of forests has been monitored annually in continuity, including recording data on defoliation with evidencing any damage to the trees. The main goal of the program is monitoring of condition of forests on a permanent, representative surfaces, arranged in a systematic grid distributed on the territory of of Europe. This paper analyzes the data on defoliation as part of the results of the forest conditions monitoring on ICP sample plots on the territory of the Republic of Serbia, in the period 2012-2016. The assessment of defoliation is performed on the experimental fields regardless of the cause of loss of leaves, because the results are not aimed to determinate the cause-and-effect relationships, but only to represent the state of defoliation on this study sample plots in the researched period. Assessment and analysis of the degree of crown defoliation has been presented for most common tree species as the most noticeable crown health indicators. Linking these results with other indicators of environmental conditions will provide more concrete informations, and draw conclusions about the vitality of the plants depending on ambient conditions.


2019 ◽  
pp. 103-113
Author(s):  
Renata Gagić-Serdar ◽  
Tomislav Stefanović ◽  
Ilija Đorđević ◽  
Goran Češljar ◽  
Natalija Momirović

The vitality of forests depends on environmental conditions and a great number of abiotic factors, such as climatic characteristics, atmospheric deposition, forest fires, direct atmospheric impacts. Nevertheless, abiotic agents are group of the most important factor threatening the trees sampled and monitored for more than a decade and a half in continuity. Therefore, further analysis can provide different trends of their direct effects and degrees of their out-turn. International program for further and more detailed monitoring of the forest condition in the Republic of Serbia (ICP Forests), which is carried out on both Level I and Level II(Mokra Gora and Crni Vrh) sample plots, will enable scientists to determine the vitality of forests both at the local and at the regional level. Results are vitality and health state of the forest ecosistems with emphasis on abiotic factors.


2014 ◽  
pp. 95-109
Author(s):  
Svetlana Bilibajkić ◽  
Radovan Nevenić ◽  
Miroslava Marković ◽  
Goran Češljar ◽  
Tomislav Stefanović ◽  
...  

Monitoring and assessment of the impact of air pollution and its effects on forest ecosystems on the territory of the Republic of Serbia, Level II, began with the establishment of Level II sample plots on Fruska Gora in 2009, on Kopaonik in 2010, in Odzaci in 2011 and on Crni Vrh and Mokra Gora in 2013. Level II Monitoring Programme includes ten working panels from ten different professional fields of forestry grouped according to the research area. All Level II sample plot activities are carried out in accordance with the ICP Forests Manual on methods and criteria for harmonized sampling, assessment, monitoring and analysis of the effects of air pollution on forests. The paper presents the results of monitoring crown condition on Level II sample plots on Kopaonik, Crni Vrh and Mokra Gora in 2014.


2012 ◽  
Vol 163 (12) ◽  
pp. 481-492
Author(s):  
Andreas Rigling ◽  
Ché Elkin ◽  
Matthias Dobbertin ◽  
Britta Eilmann ◽  
Arnaud Giuggiola ◽  
...  

Forest and climate change in the inner-Alpine dry region of Visp Over the past decades, observed increases in temperature have been particularly pronounced in mountain regions. If this trend should continue in the 21st Century, frequency and intensity of droughts will increase, and will pose major challenges for forest management. Under current conditions drought-related tree mortality is already an important factor of forest ecosystems in dry inner-Alpine valleys. Here we assess the sensitivity of forest ecosystems to climate change and evaluate alternative forest management strategies in the Visp region. We integrate data from forest monitoring plots, field experiments and dynamic forests models to evaluate how the forest ecosystem services timber production, protection against natural hazards, carbon storage and biodiver-sity will be impacted. Our results suggest that at dry low elevation sites the drought tolerance of native tree species will be exceeded so that in the longer term a transition to more drought-adapted species should be considered. At medium elevations, drought and insect disturbances as by bark beetles are projected to be important for forest development, while at high elevations forests are projected to expand and grow better. All of the ecosystem services that we considered are projected to be impacted by changing forest conditions, with the specific impacts often being elevation-dependent. In the medium term, forest management that aims to increase the resilience of forests to drought can help maintain forest ecosystem services temporarily. However, our results suggest that relatively rigid management interventions are required to achieve significant effects. By using a combination of environmental monitoring, field experiments and modeling, we are able to gain insight into how forest ecosystem, and the services they provide, will respond to future changes.


Author(s):  
А. B. Biarslanov ◽  
Z. G. Zalibekov ◽  
Z. U. Gasanova ◽  
P. А. Abdurashidova ◽  
V. А. Zhelnovakova ◽  
...  

The paper is devoted to soil cover degradation in the northen part of the Republic of Dagestan. Soil degradation is affected by irrational using free flowing underground water of artesians. Intensive extraction of underground water for domestic drinking water supply and pastures watering leads to irreversible processes in the soil cover. The study of salt spreading processes in soils caused by technogenic pressure is mainly considered for humid zone, in arid zone such work was not carried out. In this regard, the aim of the study is to clarify the state of the salt balance of soils for possible technogenic halogenesis under the conditions of a long half-century, continuous impact of artesian sources. The analysis of the territorial spreading of salts is considered on the example of soils of the marine coast and the central part of the Terek-Kuma lowland, represented by varieties of meadow saline and light chestnut soils. Taking into account the conditions of mutual location, experimental plots were selected with reference to artesian sources in the marine coast and in the continental part. Experimental and control sections were laid at experimental plots. Soil samples and artesian water samples were tested for the content of light soluble salts using conventional methods. It was established that under conditions of self-flowing artesian sources the soil of the continental part is characterized by an increased salt content and is 0.26-0.48% according to the profile against the background of the salt content in the samples of control plots – 0.11-0.17%. Coastal soils are characterized by a higher degree of salinization, the influence of mineralized water sources has a desalinization impact. On the test plot the salt content is 0.31–0.51%, in the control plot – 1.22–4.29%.


Author(s):  
Gonca Ece Özcan ◽  
Korhan Enez ◽  
Burak Arıcak

Forest roads are important transportation equipment through forested areas in the rugged, mountainous terrain of northern Turkey. Forest roads harm forest ecosystems due to both the manner in which they are established and how they are used afterwards. Damage to trees that occur during road construction through forests stresses trees, which facilitates outbreaks of bark beetle populations. Bark beetles are significant risk to the health and productivity of Turkish pine forests and to pine forests worldwide. In particular, Ips sexdentatus (Boerner) (Coleoptera, Curculionidae, Scolytinae) is a particularly destructive species of bark beetle in Turkish forests. Their damage to coniferous trees threatens the sustainability of the forest ecosystems. This study primarily aims to assess the intensity of damage that I. sexdentatus inflicts on Pinus nigra J.F.Arnold stands relative to several parameters: the distance to the nearest forest road, aspect (shady - sunny), slope (0–15% or >15%), and other stand characteristics. In this study, we show how damage by an I. sexdentatus infestation in pure black pine stands varies with distance to forest roads and in situ edaphic factors. We sampled 45 plots (400 m2 each), slope, aspect and distances to the nearest forest road was determined using ArcGIS software and the region’s road network overlays. Results showed that trees located within 100 m from the nearest forest road were the most severely damaged ones. The intensity of I. sexdentatus damage was about 16% in a hectare. Trees that were in 16–20 cm diameter class were damaged more often. I. sexdentatus damage did not show any significant correlation with the slope, aspect or degree of canopy closure.


2018 ◽  
Vol 52 (7) ◽  
pp. 1028-1058 ◽  
Author(s):  
Theodore McLauchlin ◽  
Álvaro La Parra-Pérez

Violence within armed groups in civil wars is important and understudied. Linking literatures on civil war violence and military politics, this article asks when this fratricidal violence targets soldiers who try to defect, and when it does not. It uses a unique data set of executions of officers on the Republican side of the Spanish Civil War. The article finds that while much of the violence appeared to target those who actually tried to defect, many nondefectors were likely shot too, due most likely to a pervasive stereotype that officers in general were disloyal to the Republic. This stereotype was used as an information shortcut and was promoted by political actors. Accordingly, unlikely defectors were likelier to be shot in locations in which less information was available about loyalties and in which political forces that were suspicious of officers as a group were locally stronger.


2019 ◽  
Vol 143 (1-2) ◽  
pp. 59-71
Author(s):  
Igor Anić

This paper explores the influence of higher forestry education and forestry science at the Faculty of Forestry of the University of Zagreb on the formation and preservation of forest wealth in the Republic of Croatia during the past 120 years as the basic, authentic, self-renewable, biologically diverse and distinctly natural element. In order to do so, we shall provide a survey of some significant achievements of the faculty and its distinguished professors by citing examples of important textbooks and scientific papers. In the year 2018, the Faculty of Forestry in Zagreb marked the 120th anniversary of its establishment. It was on October 20th, 1898, that the Academy of Forestry was founded within the University of Zagreb as the first higher forestry institution in Croatia and in the south-east of Europe. The continuity of higher forestry education at the University of Zagreb has been retained to date through the periods of activity of the Academy of Forestry (1898 - 1919), the Faculty of Agriculture and Forestry (1919-1946), the Agricultural-Forestry Faculty (1946 - 1960) and the Faculty of Forestry (1960 - to date). Three characteristic periods can be singled out in the development of forestry education and science at the Faculty of Forestry in Zagreb in the course of 120 years: the first half of the 20th century, the second half of the 20th century and the first half of the 21st century. The first half of the 20th century witnessed a surge in the Croatian forestry, which can primarily be attributed to the development of higher forestry education and science at the Academy of Forestry and the Faculty of Agriculture and Forestry of the University of Zagreb. Among the most important contributions of university forestry education and science in Croatia are the establishment of the Zagreb School of Silviculture and the beginnings of organized and systematic scientific research in forestry. The second half of the 20th century is characterized by the blossoming of higher forestry education and science in Croatia, which had a direct impact on the condition of forests and the development of practical forestry. During this period, the Croatian forestry, science and practice became an outstanding example of mutual cooperation and powerful development, which brought about an improvement in the condition of forests in Croatia as a whole. The forestry practice firmly adhered to the principles of the Zagreb School of Silviculture, an orientation towards natural regeneration, natural stand structure, and natural, diverse and stable forests. This trend has continued in the 21st century. The new age has given rise to vast changes and challenges in higher forestry education and science. The crisis of forestry, which has gradually been evolving over the past fifteen years, has had its repercussions on the basic activity of the Faculty: higher education and science. Today, the Faculty of Forestry is confronted with two serious challenges: lesser interest of young people in studying and a reduced intensity and scope of scientific research in forest ecosystems. There are no objective reasons for either of the above, however. Forests are the most widespread and the most important natural wealth in the continental part of the Republic of Croatia. There are currently a large number of job openings in forestry and urban forestry, as well as in nature and environment protection, and this trend will continue to rise in the future. The Croatian forest ecosystems are facing growing numbers of challenges and problems. On the other hand, there are fewer and fewer workers in forestry. In view of this, there is no reason for crisis in one of the most natural and oldest studies at the University of Zagreb. On the contrary, forestry experts have splendid prospects in today’s ecological, economic and social conditions. The task of the Faculty is to adjust itself and its basic products, experts in the management of forest ecosystems of the Republic of Croatia, to new challenges. Forestry practice and forestry science must work together, just as they have done throughout the long forestry history. Only be doing so will their development be ensured in accordance with the definition: forestry is a science, profession and art of managing and preserving forest ecosystems for the permanent benefit of man, society, environment and economy.


2019 ◽  
Vol 943 (1) ◽  
pp. 146-155
Author(s):  
A.A. Pakina ◽  
N.I. Tulskaya ◽  
A.A. Karnaushenko

The world’s economic welfare is supported by its natural resources. Mapping ecosystem services (ES) is essential to understand how ecosystems contribute to human wellbeing and to support policies, which have an impact on nature. Mapping (ES) is an important tool in their assessment. ES mapping and assessment include ecosystem properties and conditions, ES potential, supply, flow and demand. Approaches to the assessment and mapping the role of Tatarstan’s natural and transformed ecosystems in the carbon dioxide’s balance are presented. The contribution of forest ecosystems to the species’ balance composition and age of forests are estimated. The crop photosynthesis and soils’ respiration are used for agricultural lands. Emissions from industrial production are considered. Fuel combustion and other processes contribute to the balance of carbon dioxide as well. Maps compiled for these purposes prove to be an important tool to assess carbon capacity.


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