CHANGES IN PHYTOPLANKTON COMMUNITY STRUCTURE IN THE GULF OF BANDIRMA, MARMARA SEA IN 2006-2008


Balkis N. , Toklu-Alıçlı B.

FRESENIUS ENVIRONMENTAL BULLETIN, vol.23, pp.2976-2983, 2014 (Journal Indexed in SCI) identifier

  • Publication Type: Article / Article
  • Volume: 23
  • Publication Date: 2014
  • Title of Journal : FRESENIUS ENVIRONMENTAL BULLETIN
  • Page Numbers: pp.2976-2983

Abstract

Phytoplankton composition and some ecological variables
were investigated seasonally between November 2006
and August 2008 in the Gulf of Bandırma. From the analysis
of phytoplankton community composition, 99 species of
5 different algal groups were identified: 56 dinoflagellates
(56.6%), 38 diatoms (38.4%), 3 dictyochophyceans (3%),
1 euglenophycean (1%) and 1 prasinophycean (1%). Amphidinium
sphenoides was reported for the first time in
the Turkish coastal waters. Diatoms and dinoflagellates
were the most dominant groups in terms of species number
at 3 sampling stations. The maximum total phytoplankton
abundance (640 x 103 cells L-1) was observed in the surface
water of Station 2 in August 2008, with Cerataulina pelagica
being the most dominant species of that month
(600 x 103 cells L-1). During the sampling period, water
temperature ranged between 6.5 and 26.0 ºC, salinity between
21.4 and 38.5 ppt, dissolved oxygen between 3.50
and 15.62 mg L-1, the amount of NO2+NO3-N between
0.08 and 6.25 μg-at N L-1, PO4-P 0.18-8.60 μg-at P L-1,
SiO4-Si 0.05-20.37 μg-at Si L-1 and chlorophyll-a values
between 0.22 and 14.70 μg L-1. All through the study, the
increase in depth caused an increase in the amount of
nitrogen and silica, and a decrease in the amount of phosphorus.

Phytoplankton composition and some ecological variables were investigated seasonally between November 2006 and August 2008 in the Gulf of Bandirma. From the analysis of phytoplankton community composition, 99 species of 5 different algal groups were identified: 56 dinoflagellates (56.6%), 38 diatoms (38.4%), 3 dictyochophyceans (3%), 1 euglenophycean (1%) and 1 prasinophycean (1%). Amphidinium sphenoides was reported for the first time in the Turkish coastal waters. Diatoms and dinoflagellates were the most dominant groups in terms of species number at 3 sampling stations. The maximum total phytoplankton abundance (640 x 10(3) cells L-1) was observed in the surface water of Station 2 in August 2008, with Cerataulina pelagica being the most dominant species of that month (600 x 10(3) cells L-1). During the sampling period, water temperature ranged between 6.5 and 26.0 degrees C, salinity between 21.4 and 38.5 ppt, dissolved oxygen between 3.50 and 15.62 mg L-1 the amount of NO2+NO3-N between 0.08 and 6.25 mu g-at N L-1 PO4-P 0.18-8.60 mu g-at P L-1, SiO4-Si 0.05-20.37 mu g-at Si L-1 and chlorophyll-a values between 0.22 and 14.70 mu g L-1. All through the study, the increase in depth caused an increase in the amount of nitrogen and silica, and a decrease in the amount of phosphorus.