The evolution of daily extreme precipitation from 1966 to 2013 in Vojvodina Region (Serbia) was investigated. We calculated trends of ten precipitation indices and tested their corresponding significances using the Student’s t-test for seven locations. The obtained results suggest that the climate of the northern and central parts of Vojvodina region becomes wetter in terms of precipitation magnitude and frequency, reflecting the characteristic of the central European regime, while the southernmost part of the region is drier, reflecting the characteristic of the Mediterranean regime. In addition, the results indicate an increase in the amount of precipitation in short time intervals. Positive annual trends are strongly influenced by the significant increase of autumn frequency and intensity of extreme precipitation. According to the correlation between extreme precipitation indices and atmospheric teleconnection patterns, it was found that the NAO has the strongest influence on precipitation intensity indices in spring and winter, while during winter it also affects the frequency of dry conditions. The EAWR pattern has a strong influence on the statistically significant positive autumn trends.
The medieval heritage in the context of cultural and historical tourism in Bosnia and Herzegovina is often neglected, but the practice of other European countries shows that this segment of history can be exploited on a very high level. This is primarily related to large objects in the form of fortresses, which generally have a dominant position over the surrounding area. In Bosnia and Herzegovina there are a large number of such forts (over a hundred), which testify to the turbulent medieval past. The fact is also that a large number of such facilities are in an inadequate state, but there are also those who may or already have their tourist function. Within this paper, four examples of medieval forts in Bosnia and Herzegovina - two in the Bosna River valley and two in Northeast Bosnia, from the aspect of their tourism attractiveness and degree of valorization have been analyzed. The methodology in this paper is based on detailed empirical research conducted through very extensive field observation, with the application of combined qualitative and quantitative comparative method of tourism valorization. The particular method used in the paper was based on the application of GIS cartographic models for adequate spatial representation of the study objects.
Horizontal air temperature is defined by the value of the mean air temperature for a certain surface area unit. It is defined by the value of horizontal thermal gradient, i.e. the value of average change of horizontal temperature per unit area. In order to define the horizontal change of air temperature in Bosnia and Herzegovina, a GRID thermal model was constructed whose spatial resolution is 20 m. Based on obtained thermal model geo-database it was determined that the mean annual air temperature for the whole area of Bosnia and Herzegovina is about 10.9 °C, keeping in mind that there are significant thermal differences with respect to the two existing climate zones. More specifically, on the territory of the northern temperate climate zone the average annual temperature is about 9.7 °C, while in the Mediterranean climate zone the said value is 12.1 °C. In this work, it was also found that thermal contrasts are very pronounced as well, due to the fact that average annual temperature in the highest mountain peak zones in southeastern Bosnian highlands is negative and is found to be -1.4 °C (Maglić peak), while at the Neum coastal zone it is measured at 15.9 °C. The above stated pronounced thermal contrasts are determined on a small horizontal distance, as a consequence of climactic position of Bosnia and Herzegovina as well as highly pronounced terrain dynamics.
The city of East Sarajevo is a newborn city, formed twenty years ago, after the war in Bosnia and Herzegovina, in the area of the former southern and eastern Sarajevo municipalities. Changes that oc-curred in this area were not only administrative-political.Thepopulation moved from one area to anoth-er place, and changed in number and structure, which has resulted in significant changes in land use and land cover types. The aim of the paper is to analyze the types of land cover in the area of East Sarajevo using methods based on remote sensing, in order to find out the degree of these spatial changes in the period from 2000-2012, and also to define spatial development trends. Within the European project of remote research of land cover types and forms of land use, namedCO-RINE Land Cover (CLC),spacious facilities were identified from middle and large scale spatial resolution, with 5 first-level classes, 15 subclasses, and 44 subclasses of the third level of cover. Analyzing the area of East Sarajevo there are identified 3 of the first-class level, 10 second-class, and 16 third-class level types. Geodataare related to three observation periods: 2000, 2006, and 2012, comparing the situation at the beginning of the period with the situation after 12 years.
Identification of tourism potential represents the initial step in the organization of tourism offer of the certain administrative units or other spatial units. Modern scientific concept of tourism motives identification implies their systematization at the level of adequate thematic geodata sets that are based on two conceptual models. First methodological concept involves identifying and inventorying tourism motives according to the components of physical geographic and social geographic environment. In this case, attributes of associated thematic geodatabase minimally include name, type, degree of attractiveness, photo and forms of tourism that can be developed in the analyzed site. Second methodological concept is based on the identification of the tourism potentials according to territorial principle, which involves formation of geodatabases for all forms of tourism motives and all forms of tourism that can be formed in defined destinations. The implementation of these methods should be the basis for an exact segregation of tourism geographical regions on mezo-regional and macro-regional level.
Contemporary research and presentation of regional geographic contents in primary and secondary schools are almost entirely based on application of adequate GIS databases, which are organized according to the structure of education process. Geographic databases are sets of digital geospatial data systematized at the level of related thematic spatial features that are organized in accordance to an adequate regional geographic fields contained in subject of Geography in primary and secondary schools. Geobases attributes should be adjusted to educational contents in specific teaching lessons. Structurally they are dominantly numerical. Textual and other attribute forms are aplicable only in the specific cases, when content and presentation of teaching lesson have such character. Especially important aspect in content and geobase structure organization is possibility of creation of new geospatial data on the basis of existing attributes, which are based on application of adequate geoprocessing models. Geovisualization of an adequate attributive contents is based on structural GIS models for visualization, thereby putting thematic geobases contents into an adequate cartographic form, which enables automatic editing of all map elements. The tools for functional exploration of cartographic features are providing all the necessary prerequisites for achieving didactic objectives of contemporary geographic education process in primary and secondary schools.
We considered shifts in the Köppen climate zones and the corresponding impact on the crop yields in Serbia by comparing (1) the results of downscaling with the ECMWF Hamburg Atmospheric Model 5 (ECHAM5) and regional Eta Belgrade University (EBU)‐Princeton Ocean Model (POM) model for the A1B and A2 scenarios over 2001–2030 and 2071–2100 and (2) the present climate simulations for the period 1961−1990. We analyzed the EBU‐POM regional climate model complexity by calculating the corresponding metrics. The yields of winter wheat, maize and soybeans were evaluated with the Decision Support System for Agrotechnology Transfer (DSSAT) model.
We have used the Kolmogorov complexity (KC) and three suggested complexity measures to describe the complexity of spatial distribution of precipitation in Bosnia and Herzegovina, for the period 1960–1984. In particular, we have examined the monthly precipitation amount time series from 23 stations and then calculated the KC using the Lempel–Ziv Algorithm (LZA), Kolmogorov complexity spectrum (KCS), Kolmogorov complexity spectrum highest value (KCM) and overall Kolmogorov complexity (OKC) values for each time series. Our results indicate that the difference in complexity of spatial distribution of precipitation may be attributed to influence of Adriatic Sea, relief and Pannonian Basin.
We have used the Kolmogorov complexities and the Kolmogorov complexity spectrum to quantify the randomness degree in river flow time series of seven rivers with different regimes in Bosnia and Herzegovina, representing their different type of courses, for the period 1965–1986. In particular, we have examined: (i) the Neretva, Bosnia and the Drina (mountain and lowland parts), (ii) the Miljacka and the Una (mountain part) and the Vrbas and the Ukrina (lowland part) and then calculated the Kolmogorov complexity (KC) based on the Lempel–Ziv Algorithm (LZA) (lower—KCL and upper—KCU), Kolmogorov complexity spectrum highest value (KCM) and overall Kolmogorov complexity (KCO) values for each time series. The results indicate that the KCL, KCU, KCM and KCO values in seven rivers show some similarities regardless of the amplitude differences in their monthly flow rates. The KCL, KCU and KCM complexities as information measures do not “see” a difference between time series which have different amplitude variations but similar random components. However, it seems that the KCO information measures better takes into account both the amplitude and the place of the components in a time series.
In this paper a possible influence of transport on urban and rural development in Bosnia and Herzegovina is being discussed. In Bosnia and Herzegovina, like in other former socialist countries of Europe, urban and rural development had a different importance in the past fifty years. Influence of transport on the future orientation of transport network and traffic courses in Bosnia and Herzegovina and on its geographic-traffic position is being evaluated. Overall economic development of Bosnia and Herzegovina in the past ten years has been marked by several important events, which reflected intensely in its transport as well as regional development. Inheritance that the country of Bosnia and Herzegovina bears from the former country will be a stumbling block for many years in its future rural and traffic development. This is the most evident in the area of orientation of transport network and business relations, as well as in instruments by which economic position of transport is regulated. Construction of new and extension and reconstruction of the existing roads in Bosnia and Herzegovina is an assumption that rural development of economy and population will be strongly affected by transport. It is also important to emphasize that the future economic growth of industrial production and the population growth, as well as development of demand for transport services will have a permanent growth by means of the future more developed transport. A bigger use of Bosnian transit routes by other countries will also have an influence on rural development considering the fact that international transport has been growing more rapidly in the world than local transport in the past decade. Transport system has a big importance in economic and social development of Bosnia and Herzegovina. First of all, it enables availability of all areas thus affecting the rural development.
This paper describes the plant communities of two oligotrophic karstic rivers with a slight anthropogenic influence — the Trebižat and the Lištica — in South Bosnia and Herzegovina, their sinecology, and the relationship between vegetation and plant species and environmental parameters. According to 87 relevés, a total of 26 plant associations, using Braun-Blanquet methods, were found in the rivers and nearby surveyed area. Only nine associations were common to both rivers. Eight associations were recorded for the territory of Bosnia and Herzegovina for the first time. Associations from both rivers differed according to following parameters measured at the sampling site: water temperature, distance from the mouth (river kilometers), river width, water depth, flow, pH and slope. There were no differences in nutrient concentrations among the associations. According to Canonical Correspondence Analysis (CCA), three environmental variables out of the 11 initially considered were retained as being related to plant distribution. The first two axes explained 56.8% and 35.2% of variance of species-environment relationship in the Trebižat and Lištica rivers, respectively. Water depth in the Trebižat River, and pH and river kilometers in the Lištica River were found to be the most influential, while nutrients and other physico-chemical parameters were not significant in either river. Water depth vector was identified as an underlying environmental factor determining distribution of Potamogeton lucens and Myriophyllum verticillatum (Potamion), and Nymphaea alba (Nymphaeion albae). According to in situ measurements of light intensity, the highest coefficients of light attenuation, radiance and reflection were found at a station with dense populations of Potamogeton lucens and Nuphar luteum (Potametum lucentis). The vegetation and floristic value of the rivers is discussed as a basis for biodiversity conservation programmes and evaluating the state of these ecosystems in the future.
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