Species composition, density and biomass of coccolithophorids in the Istanbul Strait, Turkey


Aktan Y. , Luglie A., Aykulu G., Sechi N.

PAKISTAN JOURNAL OF BOTANY, cilt.35, ss.45-52, 2003 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 35 Konu: 1
  • Basım Tarihi: 2003
  • Dergi Adı: PAKISTAN JOURNAL OF BOTANY
  • Sayfa Sayıları: ss.45-52

Özet

A first report of the coccolithophorid flora in the phytoplankton of the Istanbul Strait is presented in this paper. Samples were taken with a Nansen bottle at three depths (surface, -5 in, 10 m), on the coast of Istanbul Strait, considering four different areas: Uskudar, Cengelkoy, Kanlica and Beykoz during May 97 and August 1998. Density, biomass and total phytoplankton chlorophyll a content were calculated. During the study period, some physical and chemical parameters were measured. A total of five species of coccolithophorids were observed at sites, however considerable differences were observed in the seasonal fluctuations of density and biomass. A bloom was observed during May 1997. Calyptrosphaera species was the most dominated species followed by Anacanthoica acanthos (Shiller) Deflandre. Biomass, quantified as biovolume, showed a well-defined seasonal pattern.