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International Journal on Algae
SJR: 0.216 SNIP: 0.322 CiteScore™: 0.4

ISSN Imprimir: 1521-9429
ISSN En Línea: 1940-4328

International Journal on Algae

DOI: 10.1615/InterJAlgae.v15.i2.20
pages 121-134

New for the Black Sea Species Chaetoceros minimus (Bacillariophyta): Field Observations and Experimental Studies

L. A. Pautova
P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences,36, Nakhimovskiy St., 117997 Moscow, Russia
V. A. Silkin
Southern Branch of the P.P. Shirshov Inst. of Oceanology, RAS, 353467 Gelendzhik, Krasnodar Region, Russia ; Institute of Cosmic Research, RAS, 84/32, Profsoyuznaya St., 17997Moscow, Russia
A. V. Lifanchuk
Institute Space Research, RAS, 84/32, Profsoyuznaya St., 177997 Moscow; Southern Branch of the P.P. Shirshov Institute of Oceanology RAS, Okeanologiya, Gelegdzhik 353467, Krasnodar Region, Russia

SINOPSIS

In the spring of 2005 in the north-east shelf of the Black Sea near the town of Gelendjik, a small cell diatom Chaetoceros minimus (Levander) Marino, Giuffre, Montresor et Zingone was recorded for the first time with maximum abundance (1.6·105 cell/L). In parallel, this species was revealed in the cultures of natural phytoplankton investigated in continuous culture. At the end of May 2006, in the period of intensive bloom of coccolithophore Emiliania huxleyi Lohm., Ch. Minimus was found in the north-eastern part of the Black Sea (4.4·105 cell/L). In June 2011 this invasive species abundantly grew in batch cultures of natural phytoplankton. Experimentally, it was shown that for abundant growth Ch. Minimus needs a relatively high concentration of phosphorus and low concentration of nitrogen. The maximal specific growth rate of Ch. Minimus is significantly higher than of E. huxleyi, which makes this invasive species potentially harmful to ecosystems.


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