USDA Forest Service - Research Papers PNW-RP最新文献

{"title":"Fungi associated with Armillaria spp. rhizomorphs on Populus tremula L.","authors":"M. Damszel, S. Przemieniecki, Katarzyna Dyczewska, Jędrzej Mastalerz","doi":"10.2478/frp-2020-0013","DOIUrl":"https://doi.org/10.2478/frp-2020-0013","url":null,"abstract":"Abstract The economic significance of aspen Populus tremula l. is only marginal, which is the main reason for its low share in the structure of stands. however, aspen can play a decisive ecological role as a pioneer tree in the succession of forest communities and may decrease the occurrence of pathogenic fungi. Aspen is also dying out and in order to determine possible biotic causes, we examined taxa of fungi using classical and molecular methods in the area of the Czerwony Dwór Forest District, Subdistrict Rogale, compartments 74b and 75j. The health of aspen trees and the quantitative and qualitative structure of microorganisms associated with Armillaria spp. was evaluated. Based on our health assessment of the aspen, we conclude that the main reason for its dying out is the intensification of root rot, which is a result of Armillaria spp weakening the trees. In the general pool of Armillaria-associated microorganisms, saprotrophs were dominating, and the fungus Fomitopsis pinicola commonly inhabited the poplar stems, whereas pathogen antagonists comprised the lowest proportion. In the quantitative and qualitative structure of fungi found in rhizomorphs, the composition of ecological groups inhabiting stumps was found to be favourable nevertheless. The increasing frequency of pathogens on the logs is a major premise for removing trees affected by Armillaria, because aspen stumps are a good food base for A. cepistipes and A. ostoyae which ultimately spread within the stand. Treatment of stumps with preparations stimulating the decomposition of wood is not recommended for logs that form the food base for pathogenic fungi.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78662622","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}

{"title":"Comparing methods for assessing the health of regeneration in Scots pine culture","authors":"Z. Sierota, M. Małecka, M. Damszel","doi":"10.2478/frp-2020-0006","DOIUrl":"https://doi.org/10.2478/frp-2020-0006","url":null,"abstract":"Abstract This study’s aim was to describe the health condition of Scots pine cultures of up to 10 years old using and comparing various field assessment methods. Since forest districts report on the health of stands annually, we assumed that for a proper health analysis it is necessary to develop a simple and yet reliable assessment method that allows for determining the share of fungal pathogen infection in the stand (both foliar and root pathogens) and their differentiation from symptoms of abiotic factors such as drought. Six different methods of health assessment were tested in selected Forest Districts across Poland. We found that the most reliable assessment of the health condition of young stands is obtained with the surface method ‘MF’ (phytopathological monitoring method) and the linear ‘Z’ method, which uses transects of 30 meters in three rows in the shape of the letter Z.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81186243","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}

{"title":"Determining the value of standing timber for harvest planning optimization","authors":"K. Zaborski, J. Banaś, A. Kożuch","doi":"10.2478/frp-2020-0007","DOIUrl":"https://doi.org/10.2478/frp-2020-0007","url":null,"abstract":"Abstract Forest managers conducting sustainable forest management are guided by the principles of sustainable use of natural resources, which involve the need for long and short-term planning in organizational units of the State Forests. Plans often differ from reality by the time individual treatments and cuts are to be performed. For economic reasons, it is important to optimize harvest planning, not only focusing on the volume of timber to be harvested, but also the price differences of individual tree species and sort types of wood. The purpose of this study was to present methods evaluating standing timber and to assess their usefulness in optimizing the harvest volume using linear programming. Stands designated to be cut were evaluated using transaction value methods, i.e. “the stumpage value method” M1, the “consumption value” method M2, as well as the net present value (NPV) method M3. The research material was obtained from the State Forests Information System (SILP) for the Marcule Forest District covering the years 2014–2018. The stand values were determined at the beginning and end of the 10-year planning period. We observed that the stand value (standing timber) differed significantly between method M2 as compared to method M1. the value of stands determined by method M3, on the other hand, decreased as the discount rate increased. In the process of optimizing the selection of stands for felling, economic criteria should also be taken into account and this is a direct measure of obtainable standing timber in terms of the cutting possibility in the given planning period. In stands where one species dominates, a simplified method of determining the value (M1) can be used, whereas in stands with significant species diversity, method M2 provides a significantly more accurate value for the cutting timber. However, if harvest volume optimization using linear programming methods is to take longer time periods into account, e.g. 30 years (three 10-year economic planning periods), the most reasonable method for determining the value of stands is the net present value method M3.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72452506","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}

{"title":"Geocaching in education – a review of international experiences Part 2. Recipient, location and subject matter of education","authors":"E. Referowska-Chodak","doi":"10.2478/frp-2020-0009","DOIUrl":"https://doi.org/10.2478/frp-2020-0009","url":null,"abstract":"Abstract This article discusses the recipient, locations and subject matter of education using geocaching, based on a literature review. The aim is to aid the implementation of similar methods of education in Poland, including forest education, by providing practical information and guidelines. In the literature, the most frequently mentioned recipients of geocaching education are pupils, especially between 10–18 years of age, and university students. This is due to the fact that the authors of the publications were mostly school and academic teachers, as well as students and doctoral students of teaching and social faculties. For the same reason, the preferred locations of educational geocaching were also school/university areas and their immediate vicinity, as well as urban areas, including parks. Locations modified to a lesser degree by anthropogenic influences such as protected areas, waterfronts and forests were also mentioned. The subject range of geocaching classes is very wide, although geography, mathematics, biology, ecology, history, culture, modern technology/equipment, linguistics and physical education were particularly frequently mentioned. Subjects related to geology, local society, economy and art were also reported. Regarding recipients of educational geocaching, the literature clearly indicates limitations in its application to the youngest age groups, while at the same time its great usefulness in the education of all other age groups is highlighted. In addition to the currently dominating anthropogenic geocaching locations, Poland offers a large variety of natural places, such as forest areas, which are already used for informal field education. These locations furthermore enable multidisciplinary education, which is in line with the extremely wide range of subject content proposed for educational geocaching.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91025881","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}

{"title":"Site index research: a literature review","authors":"Wojciech Kędziora, R. Tomusiak, T. Borecki","doi":"10.2478/frp-2020-0010","DOIUrl":"https://doi.org/10.2478/frp-2020-0010","url":null,"abstract":"Abstract The purpose of this paper was to review literature covering the topic of site index with particular emphasis on Scots pine, the most important forest-forming species in Poland. We discuss the history of the site index, research on various tree species, statistical modelling methods, the spatial application of site index and age impact assessment. The history of research on the site index of forest species is long and dates back to the 18th century. Many researchers thought that determining the quality of the habitat is very important from the point of view of rational forest management. The site index, as a measure of the potential of the habitat on which the forest grows, is one of the most important characteristics of forest stands. The site index depends on the selected model, but is most often expressed as the average or top height of trees of a given species at a certain age. In our review, we point out several insufficiencies of studies on the site index, external influences and the connection of the site index with spatial conditions. Furthermore, research conducted so far has not explicitly confirmed that there is a relationship between the site index of pine stands and their geographical location in Poland. More research on the site index, especially in regard with climate change, is needed.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74726991","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}

{"title":"Assessing the occupation of nest boxes by dormice (Gliridae) in the Carpathian forests","authors":"Izabela Fedyń, E. Pierzchała, K. Nowak, J. Waś, Adela Malak, K. Śnigórska","doi":"10.2478/frp-2020-0008","DOIUrl":"https://doi.org/10.2478/frp-2020-0008","url":null,"abstract":"Abstract Nest boxes for dormice (Gliridae) can significantly increase the habitat’s carrying capacity for these species in areas under high anthropopressure and facilitate the long-term monitoring of populations. As part of the active protection of dormice in the Carpathian Landscape Parks in Małopolska, in August and September 2019, 575 boxes of two different sizes were checked for the presence of adults, young or nests. Additionally, habitat conditions within a 25 m radius were recorded (e.g. forest stand, estimated understory cover, the approximate number of natural shelters, fruiting plant species). The vast majority of all nest boxes – 79% – were used by dormice, but also birds and insects frequently occupied these shelters. Out of four species of dormice that occur in Poland, two were recorded in the study area: hazel dormice Muscardinus avellanarius and fat dormice Gli sglis. They were found in all surveyed landscape parks and inhabited mainly fir stands. Hazel dormice preferred smaller nest boxes and were generally more common than fat dormice, which preferred large boxes. On the other hand, fat dormice were more common in areas rich in fruiting plant species. Our research thus confirmed the usefulness of artificial shelters for dormouse in active protection.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87363708","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}

{"title":"Mycorrhizal symbiosis of alien and invasive tree species","authors":"Robin Wilgan","doi":"10.2478/frp-2020-0005","DOIUrl":"https://doi.org/10.2478/frp-2020-0005","url":null,"abstract":"Abstract The introduction of alien tree species has become a world wide phenomenon over the last centuries and the cultivation of these species is an economically important branch of forestry in many countries. However, the cultivation of alien plant species poses the threat of introducing potentially invasive species, both trees and its mutualistic symbionts, such as mycorrhizal fungi. Mycorrhizal fungi are obligatory symbionts and a key element in the proper development and functioning of trees. It is thought that mycorrhizal fungi may also profoundly influence the invasiveness of alien tree species worldwide, with the proper fungal species acting as a driver to make this invasion possible. Co-invasion of alien trees and its mutualistic symbionts are well-known in the case of pines and co-invading ectomycorrhizal fungi in the southern hemisphere. Invasive tree species constitute a major ecological and economic problem through intense competition and modification of local habitats leading to a decline in biodiversity and potentially threatening many rare, native and endangered species, including fungi. Despite the fundamental role that fungi have in the functioning of forests, the impact alien tree species could have on mycorrhizal fungi in native forest ecosystems has not received much attention. Understanding the relationships between mycorrhizal fungi and alien tree species can allow us to better predict and counter- act alien species invasions, which is necessary in order to maintain biodiversity and preserve native ecosystems. On top of that, climate change could threaten some European tree species and thus free ecological niches for other species, like alien, invasive or potentially invasive trees.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81453580","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}

{"title":"Geocaching in education – a review of international experiences Part 1. Introduction: advantages and problems","authors":"E. Referowska-Chodak","doi":"10.2478/frp-2020-0004","DOIUrl":"https://doi.org/10.2478/frp-2020-0004","url":null,"abstract":"Abstract This article discusses the advantages and challenges of geocaching in education, based on a literature review. The aim is to aid the implementation of similar methods for education in Poland, in particular in the field of forest education. The most important advantages of educational geocaching include: 1) going out to the field, including direct contact with nature, which promotes positive reception by the educated and helps to shape respect and responsibility towards the environment; 2) enhancing enthusiasm and motivation to work brought about by the joy of searching for treasures, satisfaction from achievements and learning through play; 3) versatility including acquisition of multidisciplinary knowledge, developing skills, problem solving, combining theory and practice as well as physical activity. On the other hand, the problems one faces with the use of geocaching include a lack of knowledge and practice of most educators, fear and reluctance to change the traditional way of teaching, the laborious preparation of geocaching, limitations set by nature such as a short duration of some phenomena or dependence on the weather as well as the pressure on nature resulting from this educational method, which could cause or increase trampling of vegetation and erosion. In overall, due to the comprehensive advantages of educational geocaching, it should be more widely implemented in both formal and non-formal education in Poland. In the case of the latter, the extensive experience of, among others, foresters, employees of national parks or landscape parks in field education provides further support for geocaching as a useful educational tool. An additional supporting argument is the not always satisfactory effectiveness. Taking the experiences gathered in other countries into account, especially concerning potential risks and problems, as presented in this article, it is possible to take full advantage of geocaching as a tool or strategy in education, including forest education.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81744496","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}

{"title":"Tourist traffic in the Forest Arboretum of Warmia and Mazury in Kudypy","authors":"A. Auguścik","doi":"10.2478/frp-2020-0001","DOIUrl":"https://doi.org/10.2478/frp-2020-0001","url":null,"abstract":"Abstract One possible way to improve the health and well-being of people, especially those living in large urban agglomerations, is to provide the opportunity to spend time in the forest, which helps rest and regeneration by enabling contact with nature. Forest areas managed by the State Forests are therefore publicly available to tourists for recreational and educational purposes. A good example illustrating the scope of access to the forest and its resources, and at the same time indicative of the degree of interest in forest tourism, is the Polish Forest Society’s Forest Arboretum of Warmia and Mazury, run by the Kudypy Forest District in the Regional Directorate State Forests in Olsztyn. The purpose of this work was to study the attendance of people visiting the Arboretum in 2014-2018 taking the variability of interest in visiting the Arboretum depending on the season of the year and the age of tourists (adults vs. children) into account. In overall, children were observed to visit the Arboretum more often than adults, while the largest number of organized groups visited the Arboretum in 2014. The most popular month among both, children and adults, was May. Using a Student’s t-test, Pearson’s Chi-squared test and Cramer’s coefficient a significant relationship between adults and children visiting the Arboretum and the seasons was identified. Significant differences between the average number of visitors to the Arboretum among children and adults at a specific time of year was also observed.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80244503","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}

{"title":"The materials to determine the eastern range border of acidophilous oak forest Calamagrostio arundinaceae-Quercetum petraeae in Poland – two new stands of the association in the southern part of Mazovian Voivodeship","authors":"P. Zaniewski, W. Ciurzycki, K. Marciszewska","doi":"10.2478/frp-2020-0003","DOIUrl":"https://doi.org/10.2478/frp-2020-0003","url":null,"abstract":"Abstract Acidophilous oak forests Calamagrostio arundinaceae-Quercetum petraeae (hartm. 1934 scam. et Pass. 1959) are mostly known from the western part of Poland, while its eastern border has not been determined accurately. in order to address this issue, we performed a phytosociological analysis of two newly identified stands of acidophilous oak forest located in the southern part of the Mazovian Voivodeship near Kiedrzyn (vicinity of Nowe Miasto nad Pilicą) and Mikówka (vicinity of Białobrzegi). For comparison, we also examined the distribution of known patches in the region (Łódź and Mazovian Voivodeships) against this association’s background of the eastern range border. Within the identified sites, a total of 10 phytosociological relevés were taken and soil samples were collected from a depth of 10 cm. the content of organic matter, soil ph and sieving analysis were performed in the laboratory. the phytosociological material was ordered and numerically classified which gave two groups of relevés: typical for this association (seven relevés) and a degenerated form (three relevés), which has an increased share of pine in the stand. All our relevés were similar to acidophilous oak forests from the Wielkopolska region and thus different from oak-pine forests of eastern Poland. habitat conditions of the patches and the bonitation of oak were analogous to patches of this association from other parts of Poland. Furthermore, the sites we studied are located between known locations from the Bolimowska and Kozienicka Forests and are therefore connecting these two previously known areas of occurrence. this indicates that the range of the Calamagrostio-Quercetum association is at least a few dozen kilometers wider in this part of the country than the assumed range.","PeriodicalId":35347,"journal":{"name":"USDA Forest Service - Research Papers PNW-RP","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84336281","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}