A net plankton study in the Bosphorus junction of the Sea of Marmara

A 16-month study of diatoms (>55 micrometers) and certain groups of Zooplankton was carried out at 21 stations in the Bosphorus junction of the Sea Marmara on board the FW "Bilim". The maximum diatom bloom was observed in January 1986, followed by a less frequent secondary flowering in summer. Both the diatom and Zooplankton maxima were observed at 10 m. The lowest levels were attained below the halocline at a depth of 30 m. Remarkable variations, both in the species composition and abundance of diatoms, were observed with depth throughout the research. Both the species richness D and species diversity H' were found to be relatively high in March (2.30-3.06) and October 1986 (2.23-2.97) as well as the proportional representation J' (0.96-0.91). In the distribution of diatom species at different depths, higher degrees of similarity were achieved in October, the maximum being 0.8 (Jacc. coeff.) between the surface and 10 m. Among the physico-chemical factors affecting the distribution of Zooplankton with depth were temperature, salinity, dissolved oxygen, phosphate and nitrate+nitrite , which showed significant correlations.
Turkish Journal Of Botany


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Mutlu, E (Wiley, 2005-03-01)
The bioacoustics of upper waters of the Black Sea, the Sea of Marmara, and the Mediterranean Sea were studied in October 1999 with an echosounder with 120 and 200 kHz dual-beam transducers. Net tows were taken to ground-truth the acoustic volume backscattering. A forward solution was applied to determine significant scatterers of the three seas with regard to detection limits of the frequencies and background noise measured in each sea. The noise was 4 dB higher in the Sea of Marmara than in the other two s...
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New radiometric age and geochemical data are presented from the late Cenozoic volcanic activity in the Selendi Basin of western Anatolia. Stratigraphical and age data show that the volcanism occurred in four distinct stages from the early Miocene to Quaternary. The first early Miocene stage includes two volcanic units with contrasting compositions: the Egreltidag volcanic unit and the Kuzayir lamproite. These volcanic units interfinger with the sedimentary rocks of the early Miocene Hacibekir Group. The Egr...
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It is widely accepted that the Black Sea consists of two separate back arc basins which opened at different times during the Cretaceous driven by northward subduction of the Neo-Tethys Ocean. The paucity of well data, complex geometries and seismic imaging challenges mean that questions remain regarding the basement architecture though most authors accept that, at least in part, both these basins are floored by oceanic crust, even though there a no magnetic stripes. Interpretation of deep, long offset SPAN ...
Citation Formats
Z. Uysal, “A net plankton study in the Bosphorus junction of the Sea of Marmara,” Turkish Journal Of Botany, pp. 321–327, 1995, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/72141.