D. Petrova, G. Kostadinova, D. Gerdzhikov Abstract. The purpose of this article was to study and make an ecological assessment of the phytoplankton community in the Bulgarian Black Sea coastal waters for the period 2008 – 2010. Taxonomic distribution in the phytoplankton community is

D. Petrova, D. Gerdzhikov, G. Kostadinova Abstract. The genus Chaetoceros Ehrenberg of class Bacillariophyceae is widespread and abundant in species in the Black Sea phytoplankton. The aim of the article was to study its distribution in water and to analyzed its contemporary involveme

N. Georgieva, Z. Yaneva, D. Dermendzhieva, V. Kotokova Abstract. The aim of the present study was ecological monitoring of Cr (VI) concentrations in surface waters from Stara Zagora Region used in agriculture. The research goal was accomplished by: determining Cr (VI) concentrations i