Meiobenthic bristle worms (Polychaeta) of the western Black Sea shelf
Ludmila V. Vorobyova, Olena S. Bondarenko
Odessa Branch, A.O. Kovalevsky Institute of Biology of the Southern Seas (OB IBSS), National Academy of Sciences of Ukraine. 37 Pushkinskaya Street, 65125 ODESSA
The species composition, frequency and quantitative distribution of polychaetes (larvae, adult forms) which in size belong to meiobenthos have been studied. Thirty four species of polychaetes, six of which belong to eumeiobenthos have been discovered. In species composition the Bulgarian shelf (33 species) differs significantly from the Romanian (22 species) and Ukrainian (21 species). The mean density of assemblages is higher on the Bulgarian shelf. Maximum indices of abundance occur at a 15 m depth.
Keywords: Black Sea, western shelf, meiobenthos, polychaetes, eumeiobenthos, pseudomeiobenthos
Oil pollution in the surface water of Sakarya River
Esra Billur Balcıoğlu, Bayram Öztürk
Istanbul University, Faculty of Fisheries, Marine Biology Department, Laleli, Istanbul, TURKEY
In this paper the oil pollution was investigated seasonally in the mouth and 4 stations of Sakarya River water during February 2008- January 2009. The oil pollution levels were determined by UVF, using Russian crude oil and chrysene as reference materials. The maximum oil level in river water was found as 37.47 μg/L at station 2 in November-2008 and 45.38 μg/L at station 4 in April- 2008. The highest polluted area in all time is the station 2 where fishing vessels and yachts stations. The comparison of results in Sakarya River with the rivers of Turkey flowed to Black Sea as Yenice, Kızılırmak and Yeşilırmak, the oil pollution found is lower in Sakarya River. The oil pollution level found in Sakarya River is higher than the limit value given by UNESCO.
Keywords: Sakarya River, oil pollution, surface water
A method for hydrogen sulfide removal in air of submarine by Lewatit TP 208
Kasım Cemal Güven, Nazım Çubukçu
Istanbul Aydın University, Inönü Cad., 40, Sefaköy, Istanbul, TURKEY
Göktürk Merkez Mah. Gül Sok. 4, Eyüp, Istanbul, TURKEY
In this paper is proposed a method to remove the hydrogen sulfide in air of submarine. This method is based on the absorption of hydrogen sulfide by Lewatit TP 208. Soda lime cartilage is commonly used in submarine for removing of moisture and carbon dioxide in air. In this process soda lime cartilage was combined with Lewatit TP 208. The amount of Lewatit TP 208 required for 710 m3 air of submarine was 11 kg. The problem for submarine is hydrogen sulfide contents of seawater during in submerged condition. The proposal technique can remove of moisture and hydrogen sulfide in air of submarine. This process is the first record to remove the hydrogen sulfide in air of submarine.
Keywords: Hydrogen sulfide, toxicity, in air, Lewatit TP 208, submarine air