HEAVY METALS IN SHALLOW SEDIMENTS FROM THE BLACK SEA, MARMARA SEA AND AEGEAN SEA REGIONS OF TURKEY

Heavy metals in shallow sediments from the Black Sea, Marmara Sea and Aegean Sea regions of Turkey

N. Balkis , S. Topcuoglu, K. C. Güven, B. Öztürk, B. Topaloglu, Ç. Kirbasoglu, A. Aksu

Istanbul University, Institute of Marine Sciences and Management, Müsküle Sokak 1, 34119 Vefa, Istanbul, TURKEY
Department of Radiobiology, Çekmece Nuclear Research and Training Center, P. O. Box 1, Atatürk Airport 34149 Istanbul,TURKEY
Istanbul University, Faculty of fisheries, Laleli, Istanbul, TURKEY

Abstract

In this work the total Cd, Co, Cr, Ni, Zn, Fe, Mn, Pb and Cu contents is measured in shallow sediments from the Bosphorus, Gökova, Marmara and Black Sea stations are measured. Generally Cd and Pb concentrations are lower than the detection limit (0.01µg/L)of the method in Yesilirmak, Kizilirmak and Sakarya samples whereas Co, Cr, Ni, Zn, Fe and Mn contents are higher than the shale average. Cd is rather high in Bosphorus and Marmara sediments and Cd and Mn contents are rather high in Gökova sediments compared with shale average.

Keywords: Heavy metal, sediment, Black Sea, Marmara Sea

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THE ORGANIC MATTER OF SILT AGGREGATES ON THE BREAKWATERS IN THE BAYS OF SEVASTOPOL, BLACK SEA

The organic matter of silt aggregates on the breakwaters in the Bays of Sevastopol, Black Sea

T.O. Mironova, I.P. Muravjova

Institute of Biology of the Southern Seas, National Academy of Sciences of Ukraine, Sevastopol, Nakhimov av.,2

Abstract

For the first time the organic substance of silts settling on the underwater base of breakwaters in Sevastopol and in Kamyshovaya bays (southwestern Crimea) was studied. On the eastern breakwater the content of total organic matter (TOM) varied from 14 to 36% (23% on the average) of the total silt mass and on the southern breakwater from 18 to 70% (38% on the average). Estimated on the inner and the outer side of the eastern breakwater the content of TOM is almost the same; on the outer side of the southern breakwater it is greater compared with the inner side that is probably due to the nearby sewage discharge outlet. Lipids are the largest fraction in the TOM on the southern breakwater and proteins on the eastern breakwater (43-44% and 4*5-37%, respectively).

Keywords: Total organic matter, silt aggregates, breakwaters, southwestern Crimea

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SEASONAL CHANGES OF CELL VOLUMES OF FOUR DIATOM SPECIES IN THE ISKENDERUN BAY, NORTH-EASTERN MEDITERRANEAN SEA

Seasonal changes of cell volumes of four diatom species in the Iskenderun Bay, North-eastern Mediterranean Sea

Sevim Polat, G.Tamer Kayaalp

Faculty of Fisheries, University of Çukurova, 01330, Balcalı, Adana, TURKEY
Faculty of Agriculture, 01330, Balcalı, Adana, TURKEY

Abstract

The cell volumes of four diatom species in the Iskenderun Bay were calculated and results hence evaluated on seasonal basis. The selected species were Thalassiothrix fraunfeldii, Hemiaulus hauckii, Guinardia flaccida and Pseudosolenia calcar-avis which commonly occur in the area. The statical analyses showed that, cell volumes of all species were different among the seasons (p<0.01) (p<0.05). Moreover, cell volumes of three species (T. fraunfeldii, P. calcar-avisand G. flaccid) were found different among locations. There were correlations of less importance between cells volumes and seawater temperature. The results of the study showed that, complex biological and environmental factors and their interactions affect the phytoplankton cell volumes.

Keywords: Phytoplankton, diatom, cell volume, cell size, north-eastern Mediterranean

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MARINE BIODIVERSITY OF DATÇA-BOZBURUN SPECIALLY PROTECTED AREA (SOUTHEASTERN AEGEAN SEA, TURKEY)

Marine biodiversity of Datça-Bozburun specially protected area (Southeastern Aegean Sea, Turkey)

Erdogan Okus, Ahsen Yüksek, I. Noyan Yilmaz, Asli Aslan Yilmaz, S. Ünsal Karhan, M. Idil Öz, Nazli Demirel, Seyfettin Tas, Volkan Demir, Sibel Zeki, Ertugrul M. Koç, Umut Tural, Baki Yokes, Evrim Kalkan, Niyazi Deniz, Ziya Çaylarbasi, Eren Savut, Elif Murat

Istanbul University, Institute of Marine Sciences and Management, Muskule Sok. No.1, Vefa 34470 Istanbul, TURKEY

Abstract

Oceanographic and diving surveys were conducted at the largest SPA of Mediterranean basin, Datça Bozburun Specially Protected Area, in 2002-2004 periods by the Institute of Marine Sciences and Management of Istanbul University in order to determine marine biodiversity, distribution and condition of endangared or protected species and to make suggestions on management of coastal areas. Studies revealed in detection of 536 species of fauna and flora. Some problems were detected in some areas particularly around settlements. Despite of the wide coverage of Posidonia oceanica beds at the region, the invasion and distribution of Caulerpa species point out severity of problems.

Keywords: Biodiversity, specially protected area, Datça, Posidonia oceanica, Caulerpa racemosa

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METAL (PB, CD AND HG) INPUTS VIA THE RIVERS TO THE SOUTHERN MARMARA SEA SHELF, TURKEY

Metal (Pb, Cd and Hg) inputs via the rivers to the Southern Marmara Sea Shelf, Turkey

Erdogan Okus, Nuray Balkis, Edip Müftüoglu, Abdullah Aksu

Istanbul University, Institute of Marine Sciences and Management, Department of Physical Oceanography and Marine Biology, Vefa 34470, Istanbul, TURKEY
Istanbul University, Institute of Marine Sciences and Management, Department of Chemical Oceanography, Vefa 34470, Istanbul, TURKEY

Abstract

A chemical study of the major river waters of Southern Marmara Sea Shelf, Turkey, was carried out on the metal distributions and sources. The distribution of metals (Pb, Cd and Hg) was measured as ‘’Total’’, dissolved and in the suspended matter. The concentrations obtained show that the high metal concentrations in the Erdek Bay waters are mainly due to the land-based natural inputs from the erosion products of mineralized zones to the bay by two rivers (Biga and Gönen). However, the relatively high metal concentrations in the Gemlik Bay waters suggested some anthropogenic (domestic + industrial) inputs via the Kocasu (Susurluk) to the southern shelf. Generally dissolved metal contents are higher than in the suspended matter throughout the water column. Especially Cd contents are lower than the detection limit of the method (<0.01 µg/l) in the suspended matter except in Biga and Gönen waters.

Keywords: Metal, Marmara Sea, river, atomic absorbtion spectrophotometer

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BIODIVERSITY IN WESTERN PART OF THE FETHIYE BAY

Biodiversity in western part of the Fethiye Bay

Erdogan Okus, Hüsne AltIok, Ahsen Yüksek, Noyan Yilmaz, Aslı Aslan Yılmaz, S. Ünsal Karhan, Nazlı Demirel, Edip Müftüoglu, Volkan Demir, Sibel Zeki, Evrim Kalkan, Seyfettin Taş

Institute of Marine Sciences and Management, Istanbul University, TURKEY

Abstract

In this study, the influence of the artificial configuration on the biota in the Marina and surrounding region in the western inner part of the Fethiye Bay by means of biodiversity and hydrographic characteristics of the region is determined. 15 SCUBA and 3 skin dives have been performed in a zigzag manner to determine the marine biodiversity and detailed distribution of the facieses and different depths and substrates were examined. There is a thin and relatively less saline surface layer rich in nutrient and organic material in the study region. This layer also contains high organic materials which indicates terrestrial input due to fecal coliform. In addition weak current velocity causes accumulating high of suspended material in the water column as visibility is very low in the bottom. According to current measurements during the study period, current velocity with 3.4cm/s is very weak, and its direction is mainly northeast and east. In these negative conditions, biodiversity and natural ecosystem of the bay is damaged in long term seriously.

Keywords: Biodiversity, Fethiye Bay, SCUBA

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DIATOM INCREASE IN PHYTOPLANKTON COMMUNITY OBSERVED IN WINTER IN THE NORTH-EASTERN MARMARA SEA (BEYLIKDÜZÜ)

Diatom increase in phytoplankton community observed in winter in the north-eastern Marmara Sea (Beylikdüzü)

Erdogan Okus, Seyfettin Taş

Istanbul University, Institute of Marine Sciences and Management, Muskule Sok. No.1, Vefa 34470 Istanbul, TURKEY

Abstract

In this study, a diatom increase in the phytoplankton community in the north-east part of Sea of Marmara was observed in winter (upper layer water temperature between 7-9°C and salinity between 22-24 psu). In the water samples were determined a total of 45 phytoplankton taxa from the four algae classes. Most of these taxa (94 %) were composed of dinoflagellates and diatoms and other organisms parts were silicoflagellates and euglenoid flagellate species. The most common species from diatoms were Proboscia alata f. alata (Brightwell) Sundström, from dinoflagellates Ceratium fusus (Ehrenberg) Dujardin. The diatom Proboscia alata f. alata was quantitatively the dominant species in the phytoplankton community. The highest cell density was measured about 185 x 10cells l-1.It is noticeable that diatoms were more dominant than other phytoplankton species.

Keywords: Phytoplankton, diatom, Proboscia alata, north-eastern Marmara Sea

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Vol.13 – 2007 – No.3

 

Oil pollution in surface water of the Turkish side of the Aegean and Eastern Mediterranean Seas
Bayram Öztürk, Gülşen Altuğ, Mine Çardak, Pelin S. Çiftçi

Temporal Variation of Fish Assemblages in Different Shallow-water Habitats in Erdek Bay, Marmara Sea, Turkey
Cetin Keskin

First Record of Clathrocorys teuscheri Haeckel [Protozoa: Radiolaria: Polycystina] in the Aegean Sea
Benin Toklu-Alıçlı, Neslihan Balkıs

Traces of Historical earthquakes in the ancient city life at the Mediterranean region
T. Levent Erel, Fatih Adatepe

Fatty acid composition of Beroe ovata (Bosc, 1802)
Melek İşinibilir, Serap Sağlık Aslan, Selin Cumalı Burak Çoban, Kasım Cemal Güven

Problems of transport systems serving for Europe-Middle East trades within the framework of EU transport policy and solution proposals
B. Koldemir, S. Özen, N. Akten

Trends and changes of mean, maximum, minimum temperature and precipitation series in Northern Cyprus
Murat Türkeş, Faize Sarış

 

 

 

 

 

Vol.13 – 2007 – No.2

Petroleum pollution by Volgoneft-248 tanker accident occured on 29.12.1999 in Istanbul, Florya-Küçükçekmece area
Erdoğan Okuş, Kasım C. Güven, Ayhan Uysal, Selma Ünlü, Tuncay Gezgin, Filiz Nesimigil, Selin Cumalı, Ahmet Yalçın

The organic matter of silt aggregates on the breakwaters in the Bays of Sevastopol, Black Sea
T.O. Mironova, I.P. Muravjova

Heavy metals in shallow sediments from the Black Sea, Marmara Sea and Aegean Sea regions of Turkey
N. Balkis , S. Topcuoglu, K. C. Güven, B. Öztürk, B. Topaloglu, Ç. Kirbasoglu, A. Aksu

The effect of Ligula intestinalis L. Plerocercoid on the growth of bitterling (Rhodeus amarus Bloch, 1782)
Ahmet Akmirza

Air pollution of hydrocarbons exhausted from vehicle in tunnels, bridges of Istanbul and detection of 3-nitrophthalic in seawater near the side of boat
Selin Cumalı, Kasım Cemal Güven

Latest major developments in shipping finance
E. Cihan Akca

Total and size fractionated phytoplankton biomass off Karatas, north-eastern Mediterranean coast of Turkey
Sevim Polat, Ayça (Akiz) Aka

Vol.13 – 2007 – No.1

 

Diatom increase in phytoplankton community observed in winter in the north-eastern Marmara Sea (Beylikdüzü)
Erdogan Okus, Seyfettin Tas

Biodiversity in Western part of the Fethiye Bay
Erdogan Okus, Hüsne Altiok, Ahsen Yüksek, Noyan Yilmaz, Asli Aslan Yilmaz, S. Ünsal Karhan, Nazli Demirel, Edip Müftüoglu, Volkan Demir, Sibel Zeki, Evrim Kalkan, Seyfettin Tas

Metal (Pb, Cd and Hg) inputs via the rivers to the Southern Marmara Sea Shelf, Turkey
Erdogan Okus, Nuray Balkis, Edip Müftüoglu, Abdullah Aksu

Marine biodiversity of Datça-Bozburun specially protected area (Southeastern Aegean Sea, Turkey)
Erdogan Okus, Ahsen Yüksek, I. Noyan Yilmaz, Asli Aslan Yilmaz, S. Ünsal Karhan, M. Idil Öz, Nazli Demirel, Seyfettin Tas, Volkan Demir, Sibel Zeki, Ertugrul M. Koç, Umut Tural, Baki Yokes, Evrim Kalkan, Niyazi Deniz, Ziya Çaylarbasi, Eren Savut, Elif Murat

The palynological analysis of surface samples from the Western Rough Clicia (Alanya, Gazipaşa)
Hülya Caner, Nicholas K. Rauh, LuuAmn Wandsnider

Phytoplankton composition of south east Black Sea coast
A. Muzaffer Feyzioğlu, Kadir Seyhan

Geochemistry of heavy metals in the Moroccan Atlantic coastline (Area of Safi City)
S. Bouasria, O. Sadki, L, Benaabidate, H. Oummaggard, N. Hamoumi

Seasonal changes of cell volumes of four diatom species in the Iskenderun Bay, North-eastern Mediterranean Sea
Sevim Polat, G.Tamer Kayaalp 

Application of the Talwani modeling method to the magnetic data of Sinop and its surrounding
Sinan Demirel, Fatih Adatepe