The seasonal dynamics of potentially toxic and harmful phytoplankton species in Novorossiysk Bay (Black Sea)

ISSN： 1063-0740

Source： Russian Journal of Marine Biology, Vol.39, Iss.2, 2013-03, pp. : 107-115

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

The seasonal dynamics of the taxonomic composition and abundance of potentially toxic and harmful phytoplankton species in the Novorossiysk Bay in 2005–2007 was studied. The network of monitoring stations covered areas with different hydrological and hydrochemical parameters, as well as locations of the dumping of ship-ballast water, which are particularly susceptible to biological invasion. In all, 19 species of potentially toxic and harmful algae were recorded; their abundance reached 3 million cells/L. These were mostly diatoms (Pseudo-nitzschia) and dinophytes (Prorocentrum, Dinophysis, Scrippsiella, and Ceratium), whose abundant development (262 thousand and 8.8 thousand cells/L, respectively) was annually recorded in April–August. From September to March, the abundance of representatives of these divisions averaged no more than 6 and 2.7 thousand cells/L, respectively. An outbreak of the prymnesiophyte Phaeocystis pouchetii (38 thousand cells/L) in the port area was observed from April to August, 2006.