Journal of environmental protection and ecology (J ENVIRON PROT ECOL )


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    ABSTRACT: A review of the present state and future perspectives of the fishery in the Bulgarian marine part of the Black sea basin is presented. Following the approach suggested by the European Union (2008/56/EC) Marine Strategy Framework Directive (MSFD), particular species may be good indicators of specific environmental factors in their local environment. It is advisable to set the indicators for monitoring the healthy state of a marine fisheries ecosystem, concerning both pelagic and benthos organisms before making a suggestions and assessments about any given stock. Formal decision rules using these indicators for maintenance of the fishery ecosystem in a productive condition, and for stock recovery, need to be urgently implemented. In the present paper the example with sprat stock in the Black sea was emphasised. It was found that one of the main objectives for effective and sustainable management of the fish stocks is to make regular annual assessment of the parental stock biomass, length and weight growth, age determination, mortality estimation and reproductive potential estimation. Levels of fishing that break normal productivity of the given stock and to farreaching effects caused by other environmental variations and anthropogenic activities. Keywords: the Black sea, fish stock indicators, sustainable management.
    Journal of environmental protection and ecology 10/2014; 15(3):1092-1100.
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    ABSTRACT: The main objective of the present work is to evaluate the coastal impact of a generic wave farm operating in the Romanian nearshore. The study focuses mainly on two target areas, the first is located in the vicinity of the Saint George arm of the Danube and the second is a coastal sector north of Mamaia. At the same time, the expected electric power for various types of wave energy converters (including Pelamis, Wave Dragon, Archimedes Wave Swing and Aqua Buoy) was also estimated. In order to evaluate the local and the coastal impact of the wave energy farm operating in the two target areas, the ISSM computational framework was considered. This is an easily operable tool that has been designed to simulate waves and nearshore currents. The modelling system is composed of a MATLAB GUI in the foreground, which directs the integration of the SWAN wave model with a 1D surf model in the background. A complete overview of the wave field variations was obtained by gradually adjusting the energy absorbing property of the farm, from a zero absorption (no wave farm) to a total absorption scenario which may be related to a large marine project with wave energy systems distributed on multiple lines.
    Journal of environmental protection and ecology 06/2014; 15(2):597-605.
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    ABSTRACT: Abstract. The present work describes an analysis of a ten-year wave hindcast performed in the basin of the Black Sea. A SWAN based modelling system was implemented and calibrated at the level of the entire sea basin against both in situ and remotely sensed data. Validations of the wave model performances were carried out against satellite data for the ten-year period 1999-2008 and in statistical terms the model predictions were found reasonable. The results are in general in line with those provided by some similar wave prediction systems implemented in enclosed or semi-enclosed basins. The next step was to analyse the dynamics of the higher storms encountered in this period. Since an important target of the future work would be to implement some data assimilation techniques for increasing the reliability of the model predictions, especially in the case of the storm events, the systematic errors provided by the wave model for each relevant class of significant wave height were evaluated. The present work provides valuable information related to the characteristics of the storm conditions and their dynamics in the Black Sea. This environment is currently subjected to high navigation traffic and intense offshore operations and moreover strong storms that systematically occur may produce accidents with very serious consequences.
    Journal of environmental protection and ecology 06/2014; 15(2):445-454.
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    ABSTRACT: The study on the heavy metal concentrations in the 3 freshwater gastropod species, i.e. Theodoxus fluviatilis, Bithynia radomani and Viviparus mamillatus was conducted at the two sampling sites located at the Zeta river, Montenegro. The values of heavy metals in snails are below the maximum perrmissible levels prescribed by the Montenegrin Food Regulations, except for Cd in Bithynia radomani, which concentration at the sampling site Spuz was at the upper range of the permissible limit. The metal accumulation capacity for Cu, Zn, Hg and Fe were highest in Bithynia radomani, except for Hg which was concentrated more in Viviparus mamillatus. Our study shows that Bithynia radomani can be considered as the most suitable bioindicator for heavy metal pollution, indicating that further monitoring program should include endemic species or species with restricted distribution.
    Journal of environmental protection and ecology 02/2014; 15(1):210–216.
  • Journal of environmental protection and ecology 01/2014; 15.
  • Journal of environmental protection and ecology 01/2014; 15(2).
  • Journal of environmental protection and ecology 01/2014; 15(2):526.
  • Journal of environmental protection and ecology 01/2014; 15(2):537.