Abundance and biomass of picoplanktonic Synechococcus (Cyanobacteria) in a coastal ecosystem of the northeastern Mediterranean, the Bay of Iskenderun

Uysal, Zahit
Changes in abundance and biomass of Synechococcus were studied during five cruises carried out between November 2004 and September 2005 in the Iskenderun Bay, northeastern Mediterranean. In addition, spatial and temporal variations in physico-chemical factors and Chl a were measured. Abundance ranged from 0.2 x 10(4) to 23.09 x 10(4) cells ml(-1), whereas the biomass ranged from 0.19 (1) to 23.01 mu gC l(-1) in the bay. Synechococcus was found most numerous during September 2005 in the shallower part of the bay while the population was observed least during November 2004 and January 2005. The contribution of < 3 mu m size fraction to total Chl a ranged between 48%, and 74%, being low during the cold period and higher during the warm period. The observed spatial and temporal fluctuations in abundance seemed to be closely related to environmental conditions in the area. Small-sized phytoplankton dominated the bulk of biomass, at least for the summer period.


Concentration and chemical composition of PM2.5 and PM10-2.5 in the Northeastern Mediterranean
Kubilay, Nilguen; Koçak, Mustafa; Mihalopoulos, Nikos (2006-09-01)
Two stage aerosol samples (PM10-2.5 and PM2.5) were collected at a rural site (Erdemli) located on the coast of the Northeastern Mediterranean, between April 2001 and April 2002. A total of 581 aerosol samples were analysed for trace elements (Fe, Ti, Mn, Ca, V, Ni, Zn, Cr) and water soluble ions (Na+, NH4+, K+, Mg2+, Ca2+, Cl-, Br-, NO3-, SO42-, C2O42- and MS-). The annual mean PM10 and PM2.5 levels were 36.4 +/- 27.8 mu g m(-3) and 9.7 +/- 5.9, respectively. The highest levels of PM10 were observed during...
Uysal, Zahit (2012-07-01)
Changes in species composition, abundance and biomass of copepods were monitored weekly over the year 1998 in shelf waters of the northern Levantine Basin. A total of 192 copepod species belonging to 61 genera were identified during the course of this study. Thirty-six species are reported for the first time from the region, including three new species. Copepod abundance ranged from 215 individuals m(-3) in early March to 2220 individuals m(-3) in late March, whereas the biomass ranged from 4 mg m(-3) in mi...
Annual cycle of zooplankton abundance and species composition in Izmit Bay (the northeastern Marmara Sea)
Isinibilir, Melek; Kıdeyş, Ahmet Erkan; TARKAN, AHMET NURİ; Yılmaz, İsmail (2008-07-30)
The monthly abundance, biomass and taxonomic composition of zooplankton of Izmit Bay (the northeastern Marmara Sea) were studied from October 2001 to September 2002. Most species within the zooplankton community displayed a clear pattern of succession throughout the year. Generally copepods and cladocerans were the most abundant groups, while the contribution of meroplankton increased at inner-most stations and dominated the zooplankton. Both species number (S) and diversity (if) were positively influenced ...
The annual cycle of Synechococcus (cyanobacteria) in the northern Levantine Basin shelf waters (Eastern Mediterranean)
Uysal, Zahit (2006-09-01)
Abundance of picoplanktonic chroococcoid marine cyanobacteria Synechococcus was monitored weekly over the year 1998 in shallow coastal waters of the northern Levantine Basin. The ambient physical, chemical and biological variables (temperature, salinity, Secchi disk depth, total suspended sediment, nitrate, phosphate, Chl a and phytoplankton) were also measured. Synechococcus was found to be more abundant during summer and early autumn and less during winter and early spring. At the surface and 15 m depth, ...
Distribution and abundance of moon jellyfish (Aurelia aurita) and its zooplankton food in the Black Sea
Mutlu, E (2001-02-01)
The distribution of moon jellyfish (Aurelia aurita Linnaeus, 1758) in the Black Sea was determined from plankton samples collected above the anoxic zone (maximum depth 200 m) in the summer, winter and spring during 1991-1995. Distribution was patchy. Average biomass ranged from 98 to 380 g m(-2), and abundance varied from 2 to 14 individuals m(-2). Biomass and abundance peaked in late spring and summer. The distribution was correlated with hydrographic features in the Black Sea, with higher concentrations o...
Citation Formats
S. POLAT and Z. Uysal, “Abundance and biomass of picoplanktonic Synechococcus (Cyanobacteria) in a coastal ecosystem of the northeastern Mediterranean, the Bay of Iskenderun,” MARINE BIOLOGY RESEARCH, pp. 363–373, 2009, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30256.