196,029 research outputs found
Correction to: The largest European forest carbon stocks are in the Dinaric Alps old-growth forests: comparison of direct measurements and standardised approaches (Carbon Balance and Management, (2024), 19, 1, (15), 10.1186/s13021-024-00262-4)
No full textFollowing publication of the original article [1], the authors identified errors in the article title and in the author group. These errors have been updated with this correction. The article title “The largest European forest carbon stocks are in the Dinaric Alps old-growth forests: comparison of direct measurements and standardised approaches” was incorrectly written as “The largest European forest carbon sinks are in the Dinaric Alps old-growth forests: comparison of direct measurements and standardised approaches”. The given and family names of the authors “Alessia Bono, Giorgio Alberti, Roberta Berretti1, Milic Curovic, Vojislav Dukic and Renzo Motta” were incorrectly structured as “Bono Alessia, Alberti Giorgio, Berretti Roberta, Curovic Milic, Dukic Vojislav and Motta Renzo”. The original article has been corrected
Calculation of runoff and soil erosion on the Tifran watershed, Polimlje, North-East of Montenegro
No full textSoil erosion is a growing problem in South East Europe and is creating a hazard to soil quality, environment and biodiversity. It is well-known fact that runoff, soil erosion and as consequence sedimentation, are decreasing a reservoirs capacity and that is noticeable in the region of Polimlje, where the studied watershed belongs. This is causing the new expenses to the weak economies of the Countries of this underdeveloped area. Ecological factors, which are the basis for the calculation of soil erosion intensity, we included in the simulation model. At the level of the watershed, the use of computer-graphic methods allowed the quantification of the environmental effects of runoff and soil erosion. Maximal outflow (incidence of 100 years) from the studied watershed, Qmax, was predicted on 31 m3/s. The value of the Z coefficient was calculated on 0.271 and according to the result the watershed belongs in the destruction category IV. The strength of the erosion process is low, and mixed erosion dominates in the studied area. The calculated soil losses were 277 m3 per year for the watershed, specific 115.5 m3/km2 per year. We have not evaluated proposed anti-erosion measures in the area because they have not been put into practice. This study shown that IntErO model is a useful tool for researchers in calculation of runoff and sediment yield at the level of the river basins in the South East European region
Soil erosion in the Zim Potok watershed, Polimlje river basin, Montenegro
No full textThe negative impact of sediments on the environment and water resources is widely acknowledged with many watercourses in Montenegro and in the South Eastern European Region. To reduce sediment exports from the big river basins discharging to the accumulations, it is essential to identify the sources: critical sub basins and the quantity of its sediment yield and runoff. The off-site impacts of runoff and eroded soil, eutrophication of water bodies, loss of reservoir capacity, muddy flooding of roads and communities, are increasingly recognised. Establishing the correlation between on-site erosion rates with off-site impacts is complicated because of the limited data on soil erosion processes in Montenegro and the dynamic nature of this process over space and time. The use of computer-graphic methods allowed the quantification of the environmental effects of soil erosion. We used modelling of sediment yield and runoff for calculation of soil erosion intensity for a Zim Potok watershed of Polimlje, Montenegro. Ecological factors, which are the basis for the calculation of soil erosion intensity, are included in the IntErO simulation model, with the Erosion potential analytical method of Gavrilovic embedded in the algorithm of this computer-graphic method. Our results shown that the calculated maximal outflow from the river basin may be 144 m3s-1 for the 100 years return time flood. The sediment yield was calculated as 689 m3yr-1, specific 155 m3km-2yr-1. The important results of this study are the determination of erosion processes in the study watershed and new particular information about the recent state of runoff and sediment yield in formats that can facilitate its efficient management and protection, illustrating the possibility of sediment yield modelling with such approach
Monastic silviculture legacies and current old-growthness of silver fir (Abies alba) forests in the northern Apennines (Italy)
No full textSpecies-rich mixed silver fir (Abies alba Mill.) forests dominated in the northern Apennines, but climate and, mainly, anthropogenic land use provoked a sharp silver fir decline approximately 5000 years bp. The conservation of the silver fir in this region was mainly due to the establishment of monastic orders that preserved and even planted silver fir for its spiritual and economic value. In 1993, the best silver fir stands were included in the Parco Nazionale delle Foreste Casentinesi (FCNP), Monte Falterona e Campigna, and have been submitted to low-intensive management or strict protection regardless of past land use and cultural history. In this study, we have (1) analyzed the current structure of three silver fir forests that have had different ownership histories and (2) compared the structure of the three Italian forests among them and with two old-growth forests from the Dinaric Alps as a reference of naturalness. The results show that the current structures of the three Italian forests are very different among them and are strictly related to past land use and, mainly, to monastic legacies. Even if the Italian forests have experienced decades of low-intensity management or strict protection, they are currently structurally very different from Dinaric old-growth forests. Developing an old-growth structure in these forests can be very slow and, in some ways, unpredictable. The results also highlight the importance of recognizing protected areas as cultural landscapes that host an important biocultural diversity. The current risk is that by applying almost exclusive biodiversity-centered management and setting difficult or impossible-to-achieve biodiversity goals, total diversity will decrease, and biocultural diversity, the greatest richness of most European parks, will be lost
Structural and ecological characteristics of mixed broadleaved old-growth forest (Biogradska Gora - Montenegro)
No full textBiogradska Gora National Park in Montenegro is part of the Dinaric Mountains mixed forest, which belongs to the montane region of the Dinaric Alps. This paper presents some of the main structural and ecological characteristics of the mixed broadleaved old-growth forest with beech [Fagus moesiaca (Domin, Maly) Czecz.], sycamore maple (Acer pseudoplatanus L.) and European ash (Fraxinus excelsior L.) from the preserve area of the Biogradska Gora. These forest ecosystems are characterized by the high species richness and potential productivity. In the study area, 58 vascular plant species were recorded in 4 sample plots of 0.25 ha each. The average timber volume found in the sample plots was 814 m3/ha. This value is twice as high as that of similar pure beech forests in the same preserve area. The results are confirmed the biodiversity and production potential of mixed broadleaved forests, which rarely occur spontaneously. A better understanding of the processes of the pristine forest ecosystems could form a realistic basis for close-tonature management of similar stands. The obtained data provides overview of the structural characteristics of these forests, which have developed without anthropogenic influence. Exploring the structure of forests in permanent preservation areas could be an excellent basis for close-to-nature forest management
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Dr. Glendon Swarthout
No full textHosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness
Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses
No full textFollowing an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
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