The Influence Of Wind-Driven Circulation And Determination Of The Period Maximum Density Of Different Algal Groups Bloom On The Western Black Sea

The aim of the paper is to study the general features of the coastal upwelling phenomena on the Romanian Black Sea waters, the extent of the events, and the influence on the biological productivity. For the extent of the events, the analysis is based on data gathered by National Institute for Marine Research and Development "Grigore Antipa" Constanta -Romania (NIMRD) during 14 21 May 2010 cruise on the entire Romanian Black Sea shelf. Data collected daily at Mamaia Constanta (44 degrees 14' N and 28 degrees 38' E), since 1959 by NIMRD, are used on the analysis of the coastal dynamics and the period for the different algae groups to develop after the upwelling phenomena.The SST and SSS are used as a proxy for upwelling, low temperature and high salinity indicating strong upwelling conditions. In addition, the SiO4 and PO4 are considered indicators of the upwelling events as well as for the diatoms bloom.Is found that the highest correlation is between sea surface temperature and the wind component normal to the coast, sea surface temperature is lowest when the wind blows from land to sea. During May - September 2010, as a consequence of the upwelling based on maximum density of the different algal groups (cells/1) were found that the presence of Bacillariophyta is recorded after 10days and the Chlorophyta after 14days.