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Bird studies in urban parks support our better understanding to impacts of urbanization on natural forest habitats. This study is based on field census of nesting birds in urban parks of Olomouc heritage city (Czech Republic). Bird community in urban parks was compared with previous author?s bird study in hardwood floodplain forest near the Olomouc city. For characteristics of bird communities, Jaccard index, standard diversity index and equitability index were used. Comparison indicated high similarity of bird di...

Riparian forests are important ecosystems providing a spectrum of ecosystem services such as erosion control, nutrient modification and improvement of water quality in adjacent streams. In many countries management of riparian forests are restricted to protect aquatic biota as vegetation, especially woody plants provide nutrient uptake from soil preventing stream water over-enrichment. However not all tree and ground cover vegetation species carry the same positive effect on stream quality. Aim of our study was to...

Radioactive radiation is the common part of our lives due to natural sources producing the radioactive radiation. The radiation coming from the nuclear power plants is very law comparing to natural or common sources unless some accident happens. The paper deals with two well-known major nuclear power plant incidents and one local silent accident which took place in Czechoslovakia. Three Miles Island as an accident with no direct fatalities is introduced from the medical consequences point of view. Some longterm re...

The paper deals with the causes of numerous local floods and flash floods in forest areas and neighbouring location. Forest wood mining forest roads and approach paths are proven to be the main cause of forest drainage and loss of its accumulation function. Forest roads intended for logging cause drainage of large areas, easy runoff of rainwater as well as subsequent drying of the soil, weakening of trees and devastation of the forest. Two successful projects for the recultivating of forest roads have been present...

Putna-Vrancea Natural Park covers an area of about 30204 ha, being declared Natural Park in 2004, by the Romanian Government Decision no. 2151/2004. Putna-Vrancea Natural Park is located in the Curvature Carpathians and includes one of the wildest mountain areas in Romania, shelters many species of flora and fauna of national and international importance such as: Canis lupus, Ursus arctos, Lynx lynx, Rupicapra rupicapra, Cypripedium calceolus, Taxus baccata, Leontopodium alpinum. etc. The present study highlights ...

Arkhangelsk Oblast is a region of The Russian Federation with the most developed forest industry. Here, it used advanced timber harvesting and sawmilling technologies. Arkhangelsk Oblast has a large territory. The area of the region is 330103 km2. The population density is low and amounts approx. 1.91 people per square kilometer. At the same time, about 80% is the urban population. The remaining 20% of the population lives in areas remote from the regional center. Due to a number of circumstances, the infrastructu...

The present paper aims to investigate the opening up of the forest complex Maries -Limenaria of the island of Thassos in Greece and its environmental impacts. Firstthe study of the conditions of the forest road network of the mountain forestcomplex of Maries-Limenaria was done, then the assessment of the environmentalimpacts of the opening up of the above-mentioned complex, by investigating theintensity of the above impacts on the natural environment and the ability of theforest ecosystem to absorb these impacts o...

?very year, forest fires tens of thousands occur in Russia, as which result in more than 1 forest a million hectares are burned. At the same time, and even forest larger amount is damaged, and later perishes. For example, thermal radiation from a fire front directly affects a tree cambial layer, and this leads to its death. Also, due to the heat transfer of heat to the soil, its chemical composition and structure, microflora and soil change fauna, and the trees surface roots are damaged. Damage from forest fires i...

To preserve and increase the biological and landscape diversity, it is necessary to have comprehensive information about the conditions and dynamics of changes in the study object, a specific local ecosystem. Nature reserves are created to restore habitats, to protect endangered species of flora and fauna, vulnerable or complex species. Particular attention should be paid to the study of wetlands, a stabilizer of the hydrological regime of ecosystems, and a shaping element of the regional climate. It is proposed t...

The maintenance of ecological, economic and social functions of forest territories is closely connected with competitiveness of forestry. Its assessment permits to take the right decisions for its enhancement and rational use of forest resources. In this regard the purpose of this paper is to present the theoretical and conceptual framework for development of unified methodology for quantitative assessment of competitiveness of forestry companies in Bulgaria. The theoretical framework is based on the existing theo...