Omer I.,Ovidius University |
Mateescu R.,National Institute for Marine Research and Development Grigore Antipa Constanta |
Dimache A.,Technical University of Civil Engineering Bucharest
Revista de Chimie | Year: 2016
Black Sea pollution is an important issue which has significant effects on human health and aquatic life. Therefore, the pollution monitoring is very important. The aim of this study was to assess the marine ecosystem in terms of heavy metal contamination (Cu, Cd, Pb, Ni and Cr) at the Romanian coastal area in the 1996-2012 periods for Cu, Cd, Pb and in the 2004-2012 periods for Ni, Cr. The quantitative analysis of heavy metals is based on the information's provided by the National Institute for Marine Research and Development Grigore Antipa Constanta, as a result of research conducted within the integrated monitoring program. For this study were used the annual average concentrations recorded values of the heavy metals, on two areas of analysis: sea water and marine sediments. The obtained data were compared with the maximum allowable values for each category of analyzed heavy metals.
Nicolae C.G.,University of Bucharest |
Dumitrache C.,National Institute for Marine Research and Development Grigore Antipa Constanta |
Marin M.,University of Bucharest |
Raducuta I.,University of Bucharest |
Bahaciu G.,University of Bucharest
Journal of Environmental Protection and Ecology | Year: 2015
This study represents a part in a comprehensive research of specifc aquatic biodiversity for ROSCI0066 Danube Delta - Marine Area site. Zoobenthos affect the proper functioning of aquatic ecosystems by water fltration and remineralisation of organic matter. It can also be a source of food for ichthyofauna and humanity. To assess the qualitative and quantitative structure of zoobenthos in ROSCI0066 site, in autumn 2012, benthos samples were taken on sedimentary substrate at depths between 12 and 17 m, with the Van Veen grab. The species were identifed up to species level or group and for quantitative analysis the individuals were counted simultaneously with the sorting and their identifcation. Density was expressed in individuals per m2 and biomass in g m-2. In autumn 2012, in ROSCI0066 site have been identifed 28 species of benthic invertebrates, mostly polychaetes (50%), followed by mollusks (36%) and crustaceans (14%). In quantitative terms, the values of zoobenthos density and biomass showed variations ranging from a minimum density of 1375 individuals m-2 and a maximum of 6550 individuals m-2 or a minimum biomass below 41.88 g m-2 and maximum of 1296 g m-2. Compared with summer, in the ROSCI0066 Danube Delta - Marine Area site is recorded a constant number of zoobenthos species.
Mihailov M.-E.,National Institute for Marine Research and Development Grigore Antipa Constanta |
Mihailov M.-E.,University of Bucharest |
Tomescu-Chivu M.-I.,National Meteorological Administration |
Dima V.,National Meteorological Administration
Romanian Reports in Physics | Year: 2012
Generally, the Black Sea offshore waters have no vertical circulation, due to the great density stratification, which prevents the deep convection processes. The Black Sea currents are strictly horizontally and therefore there are no permanent upwelling and down welling phenomena like in other areas of the Planetary Ocean. The paper presents the existence of the upwelling at the Romanian Black Sea littoral, during the summer periods of 2006-2009 years. The analysis of the daily sea surface temperature, salinity, air temperature and wind data of the near shore seawater revealed the presence of upwelling as an effect of the western and southwestern winds. In the Black Sea the upwelling phenomena is of great significance due to the inflow of deep waters, richer in nutrients, to surface in a narrow coastal zone creating a very high bioproductivity of sea water.