Martina Kičić, D. Vuletić, S. K. Ostoić, Sergej Šimpraga, Ninoslav Matošević, Ivana Kaliger, A. Marin
Forest Park Grmoščica is an important part of urban green infrastructure for the citizens of the western part of the city of Zagreb. To enhance the quality of management of the forest park to the satisfaction of its daily users, it is important to know their socio-demographic characteristics, visiting behaviour, recreational activities, as well as their perception of the forest park. The survey for users of the Forest Park Grmoščica was developed within the INTERREG DANUBE’s URBforDAN project. It was filled out by visitors of the forest park using on-site face-to-face method and was also available online. The results of the survey provided information about the users of the Forest Park Grmoščica, their socio-demographic data, visiting habits and perception. Also, the typology of users was given depending on the activities they undertake in the forest park (cyclists, joggers, visitors who spend time in Forest Park Grmoščica with their families, and pet walkers) and their main characteristics. The obtained data can improve the management of the Forest Park Grmoščica in such a way that it fulfils its social and ecological function and is adapted to the needs of its users.
{"title":"Who Are the Visitors of Forest Park Grmoščica and What Are Their Needs? Results of Quantitative Exploratory Survey","authors":"Martina Kičić, D. Vuletić, S. K. Ostoić, Sergej Šimpraga, Ninoslav Matošević, Ivana Kaliger, A. Marin","doi":"10.15177/seefor.20-19","DOIUrl":"https://doi.org/10.15177/seefor.20-19","url":null,"abstract":"Forest Park Grmoščica is an important part of urban green infrastructure for the citizens of the western part of the city of Zagreb. To enhance the quality of management of the forest park to the satisfaction of its daily users, it is important to know their socio-demographic characteristics, visiting behaviour, recreational activities, as well as their perception of the forest park. The survey for users of the Forest Park Grmoščica was developed within the INTERREG DANUBE’s URBforDAN project. It was filled out by visitors of the forest park using on-site face-to-face method and was also available online. The results of the survey provided information about the users of the Forest Park Grmoščica, their socio-demographic data, visiting habits and perception. Also, the typology of users was given depending on the activities they undertake in the forest park (cyclists, joggers, visitors who spend time in Forest Park Grmoščica with their families, and pet walkers) and their main characteristics. The obtained data can improve the management of the Forest Park Grmoščica in such a way that it fulfils its social and ecological function and is adapted to the needs of its users.","PeriodicalId":54023,"journal":{"name":"SEEFOR-South-East European Forestry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45501719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. Kovačević, Gordana Tišma, N. Nikolić, Marina Milović, V. Vuksanović, S. Orlović
This study evaluates in vitro tolerance of white poplar genotypes to the presence of lead in an acidic rooting medium. Lead was supplemented in form of Pb(NO3)2, in the following concentrations: 0 M (Control), 10-6 M, 10-5 M, 10-4 M and 10-3 M. After four weeks of cultivation, the following characters were measured: number of roots, the length of the longest root, the shoot height, dry root mass and dry shoot mass, and parameters related to photosynthetic pigments: content of chlorophyll a, b, a+b, and of carotenoids in fresh mass, as well as chlorophyll a/b ratio. For further statistical analysis, tolerance indices by Turner and Marshal (TI) were calculated for each measured character. The strongest inhibitory effect was achieved on the medium with 10-4 M Pb(NO3)2, but the best differentiation between genotypes was achieved on the medium with 10-5 M Pb(NO3)2. The highest tolerance indices for the length of the longest root and shoot height had genotypes L-12 and LBM, and for root and shoot dry mass genotypes LCM and L-12. There were no significant differences between genotypes in tolerance indices by any of the examined photosynthetic parameters. The obtained results suggest that both low pH and the presence of citric acid as chelating agent improved evaluation of lead tolerance in comparison with the results obtained on media with standard pH and without citric acid in similar studies. In vitro tests on acidic medium with citric acid can efficiently differentiate examined genotypes for lead tolerance, which could be important for their use in phytoextraction projects, especially on acidic soils.
本研究评价了白杨基因型对酸性生根培养基中铅的体外耐受性。以Pb(NO3)2的形式补充铅，浓度分别为0 M(对照)、10-6 M、10-5 M、10-4 M和10-3 M。培养4周后，测定根数、最长根长度、茎高、干根质量和干根质量，以及叶绿素a、b、a+b含量和鲜质量中类胡萝卜素含量及叶绿素a/b比值。为了进一步进行统计分析，计算了特纳和马歇尔(TI)对每个被测性状的耐受性指数。10-4 M Pb(NO3)2的抑菌效果最好，10-5 M Pb(NO3)2的抑菌效果最好。对最长根长和茎高耐性指标最高的是L-12和LBM基因型，对根和茎干质量耐性指标最高的是LCM和L-12基因型。在所检测的光合参数中，各基因型间的耐受性指标均无显著差异。所获得的结果表明，与类似研究中在标准pH和不含柠檬酸的培养基上获得的结果相比，低pH和柠檬酸作为螯合剂的存在都提高了对铅耐受性的评价。在含柠檬酸的酸性培养基上进行的体外试验可以有效地区分所检测的耐铅基因型，这对于植物提取项目，特别是在酸性土壤上的植物提取项目的应用可能是重要的。
{"title":"In Vitro Lead Tolerance Testing in White Poplar Genotypes on Acidic Medium","authors":"B. Kovačević, Gordana Tišma, N. Nikolić, Marina Milović, V. Vuksanović, S. Orlović","doi":"10.15177/seefor.20-18","DOIUrl":"https://doi.org/10.15177/seefor.20-18","url":null,"abstract":"This study evaluates in vitro tolerance of white poplar genotypes to the presence of lead in an acidic rooting medium. Lead was supplemented in form of Pb(NO3)2, in the following concentrations: 0 M (Control), 10-6 M, 10-5 M, 10-4 M and 10-3 M. After four weeks of cultivation, the following characters were measured: number of roots, the length of the longest root, the shoot height, dry root mass and dry shoot mass, and parameters related to photosynthetic pigments: content of chlorophyll a, b, a+b, and of carotenoids in fresh mass, as well as chlorophyll a/b ratio. For further statistical analysis, tolerance indices by Turner and Marshal (TI) were calculated for each measured character. The strongest inhibitory effect was achieved on the medium with 10-4 M Pb(NO3)2, but the best differentiation between genotypes was achieved on the medium with 10-5 M Pb(NO3)2. The highest tolerance indices for the length of the longest root and shoot height had genotypes L-12 and LBM, and for root and shoot dry mass genotypes LCM and L-12. There were no significant differences between genotypes in tolerance indices by any of the examined photosynthetic parameters. The obtained results suggest that both low pH and the presence of citric acid as chelating agent improved evaluation of lead tolerance in comparison with the results obtained on media with standard pH and without citric acid in similar studies. In vitro tests on acidic medium with citric acid can efficiently differentiate examined genotypes for lead tolerance, which could be important for their use in phytoextraction projects, especially on acidic soils.","PeriodicalId":54023,"journal":{"name":"SEEFOR-South-East European Forestry","volume":"1 1","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42234361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
N. Ćelepirović, Sanja Novak Agbaba, Monika Karija Vlahović
(1) Croatian Forest Research Institute, Division of Genetics, Forest Tree Breeding and Seed Science, Cvjetno naselje 41, HR-10450 Jastrebarsko, Croatia; (2) Croatian Forest Research Institute, Division of Forest Protection and Game Management, Cvjetno naselje 41, HR-10450 Jastrebarsko; (3) University of Zagreb, School of Medicine, Department of forensic medicine and criminology, DNA Laboratory, HR-10000 Zagreb, Croatia.
（1） 克罗地亚森林研究所，遗传、林木育种和种子科学部，Cvjetno naselje 41，HR-10450 Jastrebarsko，克罗地亚；（2） 克罗地亚森林研究所，森林保护和狩猎管理司，Cvjetno naselje 41，HR-10450 Jastrebarsko；（3） 萨格勒布大学，医学院，法医学和犯罪学系，DNA实验室，HR-10000，克罗地亚萨格勒布。
{"title":"DNA Barcoding of Fungi in the Forest Ecosystem of the Psunj and Papuk Mountains in Croatia","authors":"N. Ćelepirović, Sanja Novak Agbaba, Monika Karija Vlahović","doi":"10.15177/seefor.20-17","DOIUrl":"https://doi.org/10.15177/seefor.20-17","url":null,"abstract":"(1) Croatian Forest Research Institute, Division of Genetics, Forest Tree Breeding and Seed Science, Cvjetno naselje 41, HR-10450 Jastrebarsko, Croatia; (2) Croatian Forest Research Institute, Division of Forest Protection and Game Management, Cvjetno naselje 41, HR-10450 Jastrebarsko; (3) University of Zagreb, School of Medicine, Department of forensic medicine and criminology, DNA Laboratory, HR-10000 Zagreb, Croatia.","PeriodicalId":54023,"journal":{"name":"SEEFOR-South-East European Forestry","volume":"11 1","pages":"145-152"},"PeriodicalIF":0.6,"publicationDate":"2020-12-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42992306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hungarian oak (Quercus frainetto) has dominant or co-dominant role in many thermophilous deciduous forest communities in the Balkan Peninsula. However, recent field research in the north-western margin of its range has revealed that some stands have a pronounced mesophilous character, which was also supported by data from the literature. This paper aims to analyze this mesophilous community of Hungarian oak which is found in north-western Serbia, north-eastern Bosnia and Herzegovina (B&H) and eastern Croatia. Numerical analysis, which included classification and ordination of all 474 available relevés of Hungarian oak forests from the western and central Balkans, along with the 43 relevés of mesophilous forests of oak-hornbeam from B&H, have shown that 83 mesophilous Hungarian oak relevés are floristically and ecologically more similar to mesophilous forests of sessile oak-hornbeam (Erythronio-Carpinion) than to xero-thermophilous forests of Qeurcion confertae. The new association Carpino betuli-Quercetum frainetto ass. nova hoc loco was described, floristically and ecologically characterized and assigned to mesophilous oak-hornbeam forests of Erythronio-Carpinion. The study also discusses the syntaxonomical issues of Quercion confertae and its central association Quercetum frainetto-cerridis, considering the problem of the lack of good diagnostic species for both syntaxa, and introduces possible ways of dealing with these issues.
匈牙利栎(Quercus frainetto)在巴尔干半岛的许多喜热落叶林群落中起主导或共同主导作用。然而，最近在其分布范围的西北边缘进行的实地研究表明，一些林分具有明显的中温特征，这也得到了文献数据的支持。本文的目的是分析这个中温的匈牙利橡木群落，它被发现在塞尔维亚西北部，波斯尼亚和黑塞哥维那东北部(B&H)和克罗地亚东部。数值分析包括对巴尔干半岛西部和中部匈牙利栎林的474个可获得的相关数据进行分类和排序，以及对B&H的43个中温栎角梁林的相关数据进行分类和排序，结果表明，83个中温匈牙利栎林在区系和生态学上更类似于无根栎角梁林(Erythronio-Carpinion)的中温栎林，而不是qeurcioncontae的干热栎林。对新组合Carpino betui - quercetum frainetto as . nova hoc loco进行了描述、区系和生态特征分析，并将其归属于红木-卡皮宁中温栎-角梁林。本文还讨论了Quercion confertae及其中心关联Quercetum frainetto-cerridis的分类学问题，考虑到这两个分类学都缺乏良好的诊断种的问题，并提出了可能的解决方法。
{"title":"Mesophilous Quercus frainetto Dominated Forests from Western Balkans","authors":"V. Stupar","doi":"10.15177/seefor.20-15","DOIUrl":"https://doi.org/10.15177/seefor.20-15","url":null,"abstract":"Hungarian oak (Quercus frainetto) has dominant or co-dominant role in many thermophilous deciduous forest communities in the Balkan Peninsula. However, recent field research in the north-western margin of its range has revealed that some stands have a pronounced mesophilous character, which was also supported by data from the literature. This paper aims to analyze this mesophilous community of Hungarian oak which is found in north-western Serbia, north-eastern Bosnia and Herzegovina (B&H) and eastern Croatia. Numerical analysis, which included classification and ordination of all 474 available relevés of Hungarian oak forests from the western and central Balkans, along with the 43 relevés of mesophilous forests of oak-hornbeam from B&H, have shown that 83 mesophilous Hungarian oak relevés are floristically and ecologically more similar to mesophilous forests of sessile oak-hornbeam (Erythronio-Carpinion) than to xero-thermophilous forests of Qeurcion confertae. The new association Carpino betuli-Quercetum frainetto ass. nova hoc loco was described, floristically and ecologically characterized and assigned to mesophilous oak-hornbeam forests of Erythronio-Carpinion. The study also discusses the syntaxonomical issues of Quercion confertae and its central association Quercetum frainetto-cerridis, considering the problem of the lack of good diagnostic species for both syntaxa, and introduces possible ways of dealing with these issues.","PeriodicalId":54023,"journal":{"name":"SEEFOR-South-East European Forestry","volume":"11 1","pages":"97-110"},"PeriodicalIF":0.6,"publicationDate":"2020-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42212533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The aim of this study is to identify plant lice Cacopsylla pulchella as a new alien insect in the fauna of Albania. In order to assess the potential of this insect as a pest causing damages on trees, infestation level assessment was used. In the first decade of June 2020 samples were collected at three locations in Albania, where Cercis siliquastrum is grown. Samples were collected and brought to the laboratory for further analysis. Field research was performed to assess distribution and infestation intensity across various localities. The intensity of infestation was assessed by visual examination and was categorized according to previously determined categories. C. pulchella was confirmed on C. siliquastrum in three localities in Albania. Most of the infested trees had a moderate or high intensity of infestation. Compared to the results of other countries, it seems that the Judas trees are under heavy attack in Albania. Librazhd and Elbansn districts had the highest recorded infestation level. Infested trees found in this study should be inspected in the following years and this alien insect should be further monitored in order to estimate its potential of becoming an invasive pest in this country.
{"title":"First Record of Cacopsylla pulchella (Hemiptera, Psyllidae) in Albania","authors":"E. Çota, Marta Kovač, M. Pernek","doi":"10.15177/seefor.20-14","DOIUrl":"https://doi.org/10.15177/seefor.20-14","url":null,"abstract":"The aim of this study is to identify plant lice Cacopsylla pulchella as a new alien insect in the fauna of Albania. In order to assess the potential of this insect as a pest causing damages on trees, infestation level assessment was used. In the first decade of June 2020 samples were collected at three locations in Albania, where Cercis siliquastrum is grown. Samples were collected and brought to the laboratory for further analysis. Field research was performed to assess distribution and infestation intensity across various localities. The intensity of infestation was assessed by visual examination and was categorized according to previously determined categories. C. pulchella was confirmed on C. siliquastrum in three localities in Albania. Most of the infested trees had a moderate or high intensity of infestation. Compared to the results of other countries, it seems that the Judas trees are under heavy attack in Albania. Librazhd and Elbansn districts had the highest recorded infestation level. Infested trees found in this study should be inspected in the following years and this alien insect should be further monitored in order to estimate its potential of becoming an invasive pest in this country.","PeriodicalId":54023,"journal":{"name":"SEEFOR-South-East European Forestry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49340446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Andrašev, M. Bobinac, T. Dubravac, Nikola Šušić
(1) University of Novi Sad, Institute of Lowland Forestry and Environment, Antona Čehova 13d, RS-21000 Novi Sad, Serbia; (2) University of Belgrade, Faculty of Forestry, Kneza Višeslava 1, RS-11000 Belgrade, Serbia; (3) Croatian Forest Research Institute, Division for Silviculture, Cvjetno naselje 41, HR-10450 Jastrebarsko, Croatia; (4) University of Belgrade, Institute for Multidisciplinary Research, Kneza Višeslava 1, P.O. Box 33, RS11030 Belgrade
（1） 诺维萨德大学低地林业与环境研究所，AntonaČehova 13d，RS-21000 Novi Sad，塞尔维亚；（2） 贝尔格莱德大学林业学院，Kneza Višeslava 1，RS-11000贝尔格莱德，塞尔维亚；（3） 克罗地亚森林研究所，造林司，Cvjetno naselje 41，HR-10450 Jastrebarsko，克罗地亚；（4） 贝尔格莱德大学，多学科研究所，Kneza Višeslava 1，邮政信箱33，RS11030贝尔格莱德
{"title":"Diameter Structure Changes in the Pre-Maturing Black Locust and Common Hackberry Stand in the Subotica-Horgoš Sands under the Influence of a Late Thinning","authors":"S. Andrašev, M. Bobinac, T. Dubravac, Nikola Šušić","doi":"10.15177/seefor.20-13","DOIUrl":"https://doi.org/10.15177/seefor.20-13","url":null,"abstract":"(1) University of Novi Sad, Institute of Lowland Forestry and Environment, Antona Čehova 13d, RS-21000 Novi Sad, Serbia; (2) University of Belgrade, Faculty of Forestry, Kneza Višeslava 1, RS-11000 Belgrade, Serbia; (3) Croatian Forest Research Institute, Division for Silviculture, Cvjetno naselje 41, HR-10450 Jastrebarsko, Croatia; (4) University of Belgrade, Institute for Multidisciplinary Research, Kneza Višeslava 1, P.O. Box 33, RS11030 Belgrade","PeriodicalId":54023,"journal":{"name":"SEEFOR-South-East European Forestry","volume":"11 1","pages":"111-126"},"PeriodicalIF":0.6,"publicationDate":"2020-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41916896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
B. Stajić, Marko Kazimirovic, V. Dukić, N. Radaković
(1) University of Belgrade, Faculty of Forestry, Department of Forest Management Planning, Kneza Višeslava 1, RS-11030 Belgrade, Serbia; (2) University of Banja Luka, Faculty of Forestry, Department of Forest Management Planning, Bulevar Vojvode Stepe Stepanovića 75A, BA-78000 Banja Luka, Bosnia and Herzegovina; (3) Public Enterprise ‘’Djerdap National Park’’, Kralja Petra I broj 14a, RS-19220 Donji Milanovac, Serbia
(1)贝尔格莱德大学林学院，森林管理规划系，Kneza Višeslava 1，塞尔维亚贝尔格莱德RS-11030;(2)巴尼亚卢卡大学林学院，森林管理规划系，布列瓦尔省大草原Stepanovića 75A, BA-78000巴尼亚卢卡，波斯尼亚-黑塞哥维那;(3)公共企业“jerdap国家公园”，Kralja Petra I broj 14a, RS-19220, Donji Milanovac，塞尔维亚
{"title":"First Dendroclimatological Insight into Austrian Pine (Pinus nigra Arnold) Climate-Growth Relationship in Belgrade Area, Serbia","authors":"B. Stajić, Marko Kazimirovic, V. Dukić, N. Radaković","doi":"10.15177/seefor.20-12","DOIUrl":"https://doi.org/10.15177/seefor.20-12","url":null,"abstract":"(1) University of Belgrade, Faculty of Forestry, Department of Forest Management Planning, Kneza Višeslava 1, RS-11030 Belgrade, Serbia; (2) University of Banja Luka, Faculty of Forestry, Department of Forest Management Planning, Bulevar Vojvode Stepe Stepanovića 75A, BA-78000 Banja Luka, Bosnia and Herzegovina; (3) Public Enterprise ‘’Djerdap National Park’’, Kralja Petra I broj 14a, RS-19220 Donji Milanovac, Serbia","PeriodicalId":54023,"journal":{"name":"SEEFOR-South-East European Forestry","volume":"11 1","pages":"127-134"},"PeriodicalIF":0.6,"publicationDate":"2020-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41401575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
It is well-known that tree growth at the upper treeline is controlled by low temperatures and limited seasonal growth. The study’s objective was to investigate the climate warming effects on Bosnian pine (BP; Pinus heldreichii Christ.) growth during the 20th century. We hypothesized that, like all the other drought-stressed conifers growing on tree-line locations, BP responds significantly to climate factors that control their growth. Three natural forest stands of BP were selected in Prevalla, Decan and Koritnik. The cores were taken from 98 dominant and co-dominant BP trees at breast height with no sign of human interference. The tree-ring widths were measured at 0.001 mm precision, with a LINTAB 6 (RINNTECH, Heidelberg) system and TSAP-Win Scientific software. A set of three BP tree-ring width chronologies were developed by trees spread on a typical mountain slope at elevations ranging from 1815 to 1945 m above sea level. The tree-ring chronologies from three sites showed significant correlation and this agreement decreased with the distance between sites. The length of the master chronologies varies among sites ranging from 176 years (Koritnik) to 541 years (Decani). The tree growth was controlled by a common climatic signal (local temperatures) and drought during midsummer across the investigated sites. These results confirm the assumption that tree growth at tree-line sites is controlled by low temperatures and drought conditions during the midsummer.
{"title":"Tree Growth Variability of Pinus heldreichii at Tree-Line Locations in Kosovo","authors":"Faruk Bojaxhi, E. Toromani, N. Çollaku","doi":"10.15177/SEEFOR.20-11","DOIUrl":"https://doi.org/10.15177/SEEFOR.20-11","url":null,"abstract":"It is well-known that tree growth at the upper treeline is controlled by low temperatures and limited seasonal growth. The study’s objective was to investigate the climate warming effects on Bosnian pine (BP; Pinus heldreichii Christ.) growth during the 20th century. We hypothesized that, like all the other drought-stressed conifers growing on tree-line locations, BP responds significantly to climate factors that control their growth. Three natural forest stands of BP were selected in Prevalla, Decan and Koritnik. The cores were taken from 98 dominant and co-dominant BP trees at breast height with no sign of human interference. The tree-ring widths were measured at 0.001 mm precision, with a LINTAB 6 (RINNTECH, Heidelberg) system and TSAP-Win Scientific software. A set of three BP tree-ring width chronologies were developed by trees spread on a typical mountain slope at elevations ranging from 1815 to 1945 m above sea level. The tree-ring chronologies from three sites showed significant correlation and this agreement decreased with the distance between sites. The length of the master chronologies varies among sites ranging from 176 years (Koritnik) to 541 years (Decani). The tree growth was controlled by a common climatic signal (local temperatures) and drought during midsummer across the investigated sites. These results confirm the assumption that tree growth at tree-line sites is controlled by low temperatures and drought conditions during the midsummer.","PeriodicalId":54023,"journal":{"name":"SEEFOR-South-East European Forestry","volume":"11 1","pages":"135-144"},"PeriodicalIF":0.6,"publicationDate":"2020-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46163513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Fedyukov, Musikhina Lydmila Anatolyevna, Maria S. Chernova, O. Tsoy, N. A. Magalyas
The density of wood inside the stick varies greatly according to the diameter and height of the tree. The development of a non-destructive method of predicting an average density of wood in all specific breed stem-base density in parts of the tree is of great practical importance. For this purpose, the research was conducted to identify the patterns of wood density dynamics against the height and the diameter of birch trees growing in the conditions of the Middle Volga Region in Russia. Fourteen model birch trees (Betula pendula) were selected as research material on two plots in the plantations of the Scientific-Experimental Forest District of the Volga State University of Technology (VSUT) in the Republic of Mari El of Russia. From each felled model tree 50.0 mm cross-section discs were carved at a distance of 1.3 m from the root collar and at relative heights of 0.25H, 0.5H, and 0.75H. Prototypes in the form of 20x20x30 mm rectangular prisms (long side along the wood grain) were made from their north and south sides at a distance of 0.25R, 0.5R and 0.75R from the stem core along the NS diagonal. Density studies were conducted by measuring the density of the wood sample immersed in liquid against the buoyant force. It has been revealed that there are both differences and patterns of change in density in the longitudinal and cross-section directions of the trunk of a birch tree growing in the conditions of the Middle Volga Region in Russia. Based on the results obtained, a mathematical model of these laws has been formulated. Сlose relationship between the average density of the stick and its diameter at breast height (DBH) cross-section average density, i.e. ρtree=178.52+0.641ρdbh (r=0.922) has been revealed. By applying a well-known method of determining the density of crosssection radial core extracted from the wood by an age borer at this height, wood density of the birch trees growing in the Middle Volga Region can be calculated according to this equation.
{"title":"A Non-Destructive Prediction Method for Wood Density Variations of Silver Birch Trees Growing in the Middle Volga Region, Russia","authors":"V. Fedyukov, Musikhina Lydmila Anatolyevna, Maria S. Chernova, O. Tsoy, N. A. Magalyas","doi":"10.15177/seefor.20-09","DOIUrl":"https://doi.org/10.15177/seefor.20-09","url":null,"abstract":"The density of wood inside the stick varies greatly according to the diameter and height of the tree. The development of a non-destructive method of predicting an average density of wood in all specific breed stem-base density in parts of the tree is of great practical importance. For this purpose, the research was conducted to identify the patterns of wood density dynamics against the height and the diameter of birch trees growing in the conditions of the Middle Volga Region in Russia. Fourteen model birch trees (Betula pendula) were selected as research material on two plots in the plantations of the Scientific-Experimental Forest District of the Volga State University of Technology (VSUT) in the Republic of Mari El of Russia. From each felled model tree 50.0 mm cross-section discs were carved at a distance of 1.3 m from the root collar and at relative heights of 0.25H, 0.5H, and 0.75H. Prototypes in the form of 20x20x30 mm rectangular prisms (long side along the wood grain) were made from their north and south sides at a distance of 0.25R, 0.5R and 0.75R from the stem core along the NS diagonal. Density studies were conducted by measuring the density of the wood sample immersed in liquid against the buoyant force. It has been revealed that there are both differences and patterns of change in density in the longitudinal and cross-section directions of the trunk of a birch tree growing in the conditions of the Middle Volga Region in Russia. Based on the results obtained, a mathematical model of these laws has been formulated. Сlose relationship between the average density of the stick and its diameter at breast height (DBH) cross-section average density, i.e. ρtree=178.52+0.641ρdbh (r=0.922) has been revealed. By applying a well-known method of determining the density of crosssection radial core extracted from the wood by an age borer at this height, wood density of the birch trees growing in the Middle Volga Region can be calculated according to this equation.","PeriodicalId":54023,"journal":{"name":"SEEFOR-South-East European Forestry","volume":"11 1","pages":"85-90"},"PeriodicalIF":0.6,"publicationDate":"2020-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46936005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Pernek, M. Matek, T. Maretić, N. Lacković, D. Matošević
The aim of this study is to identify plant lice Cacopsylla pulchella a new alien insect in the fauna of Croatia. We propose a new method of infestation level assessment in order to assess the potential of this insect as a pest. In May 2020 samples were collected from eleven locations in Croatia, where Cercis siliquastrum is grown in parks. Adults and nymphs of C. pulchella were collected together with a plant material and brought to entomological laboratory for further analysis. Field research was performed in order to assess the distribution and infestation intensity across various localities in Croatia. The intensity of infestation was assessed heuristically by visual examination and was categorized in four categories: 0) no infestation, 1) low, 2) moderate and 3) high infestation. C. pulchella was confirmed on C. siliquastrum in eleven localities in Croatia. Most of the infested trees had a low or moderate intensity of infestation. Damages caused by this insect are due to the emission of honey dew, a small spherical drop covered with waxy secretion causing necrotic areas which could lead to the premature fall of the leaves. It is not known what kind of progress in infestation intensity could be expected so infested trees found in this study should be checked closely in the coming years. It is strongly suggested to continue the monitoring of this alien insect on C. siliquastrum in Croatia and to estimate its potential of become an invasive pest which could endanger ornamental and other values of its hosts.
{"title":"First Record of Cacopsylla pulchella (Hemiptera, Psyllidae) in Croatia","authors":"M. Pernek, M. Matek, T. Maretić, N. Lacković, D. Matošević","doi":"10.15177/seefor.20-10","DOIUrl":"https://doi.org/10.15177/seefor.20-10","url":null,"abstract":"The aim of this study is to identify plant lice Cacopsylla pulchella a new alien insect in the fauna of Croatia. We propose a new method of infestation level assessment in order to assess the potential of this insect as a pest. In May 2020 samples were collected from eleven locations in Croatia, where Cercis siliquastrum is grown in parks. Adults and nymphs of C. pulchella were collected together with a plant material and brought to entomological laboratory for further analysis. Field research was performed in order to assess the distribution and infestation intensity across various localities in Croatia. The intensity of infestation was assessed heuristically by visual examination and was categorized in four categories: 0) no infestation, 1) low, 2) moderate and 3) high infestation. C. pulchella was confirmed on C. siliquastrum in eleven localities in Croatia. Most of the infested trees had a low or moderate intensity of infestation. Damages caused by this insect are due to the emission of honey dew, a small spherical drop covered with waxy secretion causing necrotic areas which could lead to the premature fall of the leaves. It is not known what kind of progress in infestation intensity could be expected so infested trees found in this study should be checked closely in the coming years. It is strongly suggested to continue the monitoring of this alien insect on C. siliquastrum in Croatia and to estimate its potential of become an invasive pest which could endanger ornamental and other values of its hosts.","PeriodicalId":54023,"journal":{"name":"SEEFOR-South-East European Forestry","volume":" ","pages":""},"PeriodicalIF":0.6,"publicationDate":"2020-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46441678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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