The annual cycle of Synechococcus (cyanobacteria) in the northern Levantine Basin shelf waters (Eastern Mediterranean)

Date

2006-09-01

Author

Uysal, Zahit

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

186
views

0
downloads

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, cell concentrations were in the range 6.4 x 10(3)-1.5 x 10(5) and 3.2 x 10(3)-1.6 x 10(5) cells(.)ml(-1), respectively. Based on the Pearson product-moment correlation analysis, a highly significant correlation between Synechococcus abundance and ambient temperature was observed (n = 40, r = 0.558, P < 0.01). As Synechococcus forms blooms that usually do not last more than a week, the short time-scale survey achieved in this study was appropriate to reveal its abundance dynamics. Several factors such as rapid changes in nutrient concentration (especially nitrate), phytoplankton, light availability, temperature, salinity, freshwater input and vertical mixing played a relevant role on the abundance of Synechococcus over the year in the highly dynamic shallow coastal waters of the Levantine Basin.

Subject Keywords

Eastern Mediterranean, Growth factors, Levantine Basin, Near-shore waters, Population dynamics, Synechococcus

URI

https://hdl.handle.net/11511/30390

Journal

MARINE ECOLOGY-AN EVOLUTIONARY PERSPECTIVE

DOI

https://doi.org/10.1111/j.1439-0485.2006.00105.x

Collections

Graduate School of Marine Sciences, Article

Suggestions

OpenMETU
Core

Short term temporal & spatial fluctuations in marine cyanobacterium synechococcus abundance in oligotrophic deep shelf waters (northeastern Mediterranean) Uysal, Zahit (2017-01-01) © by PSP.Abundance of picoplanktonic marine cyano-bacterium Synechococcus was monitored weekly over a year period at an oligotrophic deep shelf station in the northeastern Levantine basin (northeastern Mediterranean). In addition to abundance, ambient parameters such as; temperature, salinity, secchi disc depth, total suspended sediment, ni-trate+nitrite, phosphate, chlorophyll and phyto-plankton were also collected. Population was found most abundant during March & December (1.8 × 104 cells/ml) and June & ...
Synechococcus dynamics in the Levantine basin shelf waters (northeastern Mediterranean) Uysal, Zahit (2010-12-01) The abundance of picoplanktonic marine cyanobacteria Synechococcus was measured at weekly intervals over a period of one year in the northern Levantine basin shelf waters. Synechococcus was found more abundant during summer and early autumn and least during winter. Significant increases in abundances mostly occurred during very low nutrient concentrations either a week or two weeks after the nutrient enrichments. Cells were distributed homogenously in the water column due to intense mixing observed during w...
Weekly Variations in Phytoplankton Structure of a Harbour in Mersin Bay north eastern Mediterranean Eker Develi, Elif; Kıdeyş, Ahmet Erkan (2000-01-01) Weekly variations in the phytoplankton composition of a harbour in Mersin Bay were studied with two methods: filtration for the assessment of >55 μm phytoplankton from July 1995 to June 1997; and sedimentation for the assessment of all phytoplankton (both>55 μm and <55 μm) between 15 February and 25 May in 1996. With both sampling methods, a total of 175 phytoplankton species were identified. In the filtered samples, the total diatom abundance was much higher than that of dinoflagellates. The highest diatom...
Decreased levels of the invasive ctenophore Mnemiopsis in the Marmara Sea in 2001 İşinibilir Okyar, Melek; Tarkan, Ahmet N; Kıdeyş, Ahmet Erkan (null, 2004-01-01) Mnemiopsis leidyi, an endemic ctenophore of the western Atlantic, was first reported in the Marmara Sea in summer 1992, at an average abundance of 27 ind. m−3. We investigated its abundance and distribution together with that of the mesozooplankton (most species are prey organisms of M. leidyi) at eight stations during August 2001, in order to evaluate recent population developments with regard to the impact of its predator, Beroe cf ovata. The abundance of M. leidyi was found to be quite low (range 0.5–8.8...
Decreased levels of the invasive ctenophore Mnemiopsis in the Marmara Sea in 2001 İŞİNİBİLİR OKYAR, Melek; Tarkan, AN; Kıdeyş, Ahmet Erkan (2004-01-01) Mnemiopsis leidyi, an endemic ctenophore of the western Atlantic, was first reported in the Marmara Sea in summer 1992, at an average abundance of 27 ind. m(-3). We investigated its abundance and distribution together with that of the mesozooplankton (most species are prey organisms of M. leidyi) at eight stations during August 2001, in order to evaluate recent population developments with regard to the impact of its predator, Beroe cf ovata. The abundance of M. leidyi was found to be quite low (range 0.5-8...

Citation Formats

Z. Uysal, “The annual cycle of Synechococcus (cyanobacteria) in the northern Levantine Basin shelf waters (Eastern Mediterranean),” MARINE ECOLOGY-AN EVOLUTIONARY PERSPECTIVE, pp. 187–197, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30390.