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Search Results: 1 - 10 of 120170 matches for " ?ur?i? Sne?ana "
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Conservation biogeography: The modern scientific contribution of biogeography to the improvement of nature conservation
uriSneana
Glasnik Srpskog Geografskog Dru?tva , 2009, DOI: 10.2298/gsgd0904311d
Abstract: In present times, there is a clear and growing need for applying theoretical biogeographic achievements in improving the state of biodiversity and conservation. Conceptual principles of conservation biogeography take the research into the relationship between fundamental biogeographic principles and the need for their appliance in nature conservation as the basic theory model, based upon biogeographic studies of isolated ranges. This paper is meant to point out the differences between spatial and functional isolation and the effects these have on the stability of populations and species. In light of this need to apply theories in biodiversity and nature conservation, it is important to research not only the processes that depend solely upon natural factors, but also those that are caused by a number of human-induced changes, e.g. habitat fragmentation, climate change or biotic homogenization.
Biogeographic foundations of creating protected areas networks
uriSneana
Glasnik Srpskog Geografskog Dru?tva , 2010, DOI: 10.2298/gsgd1004147d
Abstract: In this study, biogeographic adequacy and potentials of application systems for nature conservation through creating networks of protected areas will be analyzed. This approach in overcoming the consequences of the more intense process of fragmentation and deficiency of habitats has distinguished appliance in the practice of nature conservation in spatial proportions, which include multiple heterogeneous biotic and ecological conditions even of the entire continents.
Ecological and biogeographical consequences of the fragmentation process
uriSneana
Glasnik Srpskog Geografskog Dru?tva , 2012, DOI: 10.2298/gsgd1201161d
Abstract: This paper will analyze the cause of, and ecological and biogeographical consequences of fragmentation process of habitats and ecosystems. Fragmentation process of the autochthonous habitats that without doubt leads also towards the break in their continuity shows by placement in all areas that are under the anthropogenic influence, and as well under the influence of the natural hazards. Spatial and functional isolation as the consequences of fragmentation can be overcome with the help of the formation of the ecological networks and corridors whose dynamic of management will be in accordance with the dynamic of change in habitats formed as the consequence of the fragmentation. [Projekat Ministarstva nauke Republike Srbije, br. 176008]
GIS application for the natural conditions evaluation of Ra anj municipality for agriculture purposes
Smiljani? Sanja,uriSneana
Glasnik Srpskog Geografskog Dru?tva , 2006, DOI: 10.2298/gsgd0602161s
Abstract: In this paper is presented an example of quantitative evaluation of natural conditions for the agriculture purposes on the territory of Ra anj municipality. With assistance of GIS application, are analyzed soil attributes of municipality territory, angles of slopes, expositions of relief and hypsometric attributes. The final result of evaluation is synthesis map of capabilities for the agriculture purpose. As eliminatory factor in this analyses are observed areas under forest vegetation.
A condition and dynamics of the earth's ozone layer with attention on the Montreal protocol
Duci? Vladan,uriSneana
Glasnik Srpskog Geografskog Dru?tva , 2005, DOI: 10.2298/gsgd0501049d
Abstract: The paper presents the analyses of the condition and dynamics of earth's ozone layer on the base of the latest satellite measurements and estimated results of the pollutants emissions. On the basis of those results it presented an attempt of explanation of the ozone layer dynamics by prospective causality. Furthermore, paper work contents analyses of activities and measures that are provided by international document known as Montreal Protocol on Substances that Deplete the Ozone Layer.
A treatment of protected natural assets in the system of spatial plans
uriSneana,Filipovi? Dejan
Glasnik Srpskog Geografskog Dru?tva , 2005, DOI: 10.2298/gsgd0501241d
Abstract: In compatibility with actual recommendations and policy which leads to improvement and preservation of integral environment and especially its valuable and rare natural features and complex territory, which may separate under category of protected natural asset or area, it is necessary to implement these active and integral approach to all variety of planning documents who have purpose for regulation of some area. Civilized society which take care about their environment not only in short time period but in the period who will be reality for many of future generations, must take special interests in process of spatial planning and its integral part nature protection. Way of managing and advisedly, expert references which are need to controlling natural development of some asset, have to be harmonically connected with real state of same asset, but none observed only in their isolation, yet in real environment and their planned perspective.
A possibility of spatial-functional protected natural assets coexistence in the urban landscapes: Belgrade case study
uriSneana,Smiljani? Sanja
Glasnik Srpskog Geografskog Dru?tva , 2007, DOI: 10.2298/gsgd0701185d
Abstract: In this paper we will analyze specific reconciliation emergency of nature assets protection with a spatial and functional urban landscapes development trend. Due to multifunctional nature of urban landscapes, high level of air, water and land pollution, noise magnitude exalted influence, disarrangement of autochthony communications flows inside major nature complexes, as well as other forms of anthrop pressure on the nature assets, active protection process of such assets and theirs management becomes more and more complex. On the town Belgrade territory it is recorded more than 45 natural objects which are protected by law and are under custody and managemental regime that enable theirs sustainable existence in the dominantly anthropogenic landscape.
Effects of geoecological factors on vegetation of the Gru a basin
Milin?i? M.,Vujadinovi? Sneana,uri? Nina,?abi? D.
Archives of Biological Sciences , 2013, DOI: 10.2298/abs1301121m
Abstract: The paper presents the results of a study of the effects of geoecological factors on the vegetation of the Gru a basin (F=618.6 km ). In the first phase, geoecological factors were identified and their differentiation to physical geographic (geological structure, tectonics, relief, climate, waters, types of land) and anthropogeographic factors (activities of population) was carried out. In the second phase, their influence on vegetation was defined, and in the third phase, the condition in the Gru a basin was analyzed on the basis of topographic and thematic maps using GIS methodology.
The forest melliferous flora in the vicinity of Blace, Serbia
Peri?iSneana,Ma?ukanovi?-Joci? Marina,Karad?i? Branko,ur?evi? Lola
Archives of Biological Sciences , 2004, DOI: 10.2298/abs0402039p
Abstract: Melliferous plant species in the forests near Blace (South Serbia) were investigated in order to estimate the significance, contribution, quality and ecological characteristics of representatives of the apiflora as potential nectar and pollen sources, the elements of bee pasturage. The significance of melliferous plants was determined on the basis of nectar and pollen production intensity, as well as by following blooming periods. According to adaptations to moisture, light, and temperature, melliferous species can be relegated to eight groups and six subgroups. Out of the total number of melliferous species in the investigated area (223), the forest apiflora accounted for 82 species (36,77%). The species with highest nectar and/or pollen production are: Alnus glutinosa, Corylus avellana, Paulownia tomentosa, Picea abies, Prunus tenella, Robinia pseudoacacia, species of the genera Salix, Tilia, and Campanula, Atropa bella-donna, Calamintha officinalis, Glechoma hederacea, Pulmonaria officinalis, Salvia glutinosa and Valeriana officinalis.
In Vitro Cytotoxic Activity of Origanum vulgare L. on HCT-116 and MDA-MB-231 Cell Lines
Filip Grbovi?,Milan S. Stankovi?,Milena ?uri,Nata?a ?or?evi?,Dragana ?ekli?,Marina Topuzovi?,Sneana Markovi?
Plants , 2013, DOI: 10.3390/plants2030371
Abstract: In the present investigation, we examined the cytotoxic effect of methanolic extract from Origanum vulgare on HCT-116 and MDA-MB-231 cell line in vitro. In order to determine the cytotoxic effects we used an MTT viability assay. The results showed that cell growth is significantly lower in extract treated cells compared to untreated control. The effect of inhibition of cell growth was higher in the treatment of HCT-116 cell line than in MDA-MB-231. Based on the results it is determined that O. vulgare is a significant source of biologically active substances that have cytotoxic and antiproliferative activity in vitro.
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