OIL POLLUTION IN THE BLACK SEA MARINE ORGANISMS DURING 2003-2006: MUSSEL, SHELLFISH, AND ALGAE

Oil pollution in the Black Sea marine organisms during 2003-2006: mussel, shellfish, and algae

Kasım Cemal Güven, Filiz Nesimigil, Selin Cumalı

Istanbul Aydın University, İnönü Cad., 40, Sefaköy, Istanbul, TURKEY

Abstract

Oil pollution was investigated in mussel, shellfish and 3 green, 1 brown and 2 red algae collected different part of the Black Sea coast of Turkey. The oil pollution was found in the samples collected from the east part of the Black Sea were found more polluted than west and middle part of the Black Sea coast of Turkey. The maximum oil pollution levels in the mussels samples collected in 2005-2006 are similar as 106.01-107.33 μg/L wet weight. Oil pollution found in mussel, Rapana venosa and algae were found high in east part of the Black Sea coast of the Black Sea. The maximum oil level in R.venosa was found as 15.80 μg/g in Yeşilırmak River mouth. The high pollution of algae samples were found as 141.83 μg/g in Enteromorpha compressa collected from Samsun Harbour. In generally high concentration of oil in the Turkish Black Sea coast have been found in harbour samples. Limited water exchanged in harbour is the main cause of the oil contamination. In generally oil pollution in algae was higher than in mussel and in R. venosa.

Keywords: The Black Sea, oil pollution, mussel, shellfish, algae

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IMPACT OF URBAN WASTEWATERS ON GROUNDWATER QUALITY IN THE WATERSHED OF MIDDLE SEBOU (MOROCCO)

Impact of urban wastewaters on groundwater quality in the watershed of Middle Sebou (Morocco)

Elhoussine Derwich, Zineb Benziane, Lahcen Benaabidate, Driss Belghyti

University of Sidi Mohamed Ben Abdellah, CURI, P.O. Box: 2626, Fez 30000, MOROCCO
Faculty of Sciences Dehar Mehraz, Department of Biology, P.O. Box: 1796, Atlas, Fez 30000, MOROCCO
Laboratory of Georesources and Environment, FST – Fez, P.O. Box: 2202, Fez 30000, MOROCCO
Faculty of Sciences, Department of Biology, P.O. Box: 133, Kenitra 14000, MOROCCO

Abstract

The study has been carried out in November 2007 and July 2008 on eight wells located in the vicinity of Fez stream and Sebou River which waters are polluted from discharges issued from the urban area of Fez city. The obtained results showed important concentrations in heavy metals mainly in wells drilled inside the alluvial aquifers and located more meadows of the Fez stream and Sebou River. The comparison of the contents of heavy metals between shallow aquifers and surface waters along Sebou River indicated a very narrow correlation which can be explained by hydrogeologic interaction between these waters.

Keywords: Groundwater, heavy metals, pollution, Fez stream, Sebou River, Morocco

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ASSESMENT OF DISSOLVED OXYGEN IN COASTAL WATERS OF BENGHAZI, LIBYA.

Assesment of dissolved oxygen in coastal waters of Benghazi, Libya

Joel Prashant Jack, Amal Tahir Abdsalam, Naima Saad Khalifa

Department of Environment, Faculty of Public Health, Post Box: 18251 Al- Arab Medical University, Benghazi, LIBYA

Abstract

Study was conducted regularly from December 2008 till March 2009 in three habitats in Benghazi coast. The water parameters were taken into consideration and sampling was conducted on surface waters and 30 cm below in the coastal waters by using digital portable meters. Estimation of solid waste material present in the coast was taken to correlate the pollutants present in coastal waters and its influence on dissolved oxygen. A total of 106 samples are sampled and analyzed in three different habitats during December 2008 until March 2009. Caria 56 (52.83%) followed by Zilayana 31 (29.24%) and thirdly Sabre 19 (17.92%). The difference of sampling is because of varied reasons and the available facilities at the site of sampling. Table’s 1-17 shows range, mean, standard deviation and coefficient of variance for parameters like water temperature, dissolved oxygen, salinity and pH. Finally, the pollutants in the beach are dominated by plastic in all the three habitats with 36.01% in Zilayana, 33. 47% in Caria and 54.20% in Sabre. Finally it is concluded from the studies that, dissolved oxygen levels will depend on physiochemical parameters, especially temperature, salinity and pH. In addition to that, presence of large amount of plastic and other disposals may pose a severe threat to coastal ecosystem in turn increasing the surface temperatures and over bloom in turn will have an impact on dissolved oxygen and pH.

Keywords: Dissolved oxygen (DO), salinity, temperature, pH, pollutants

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INVESTIGATIONS OF THE ROSE SHRIMP PARAPENAEUS LONGIROSTRIS (LUCAS, 1846) IN THE NORTHERN MARMARA SEA

Investigations of the rose shrimp Parapenaeus longirostris (Lucas, 1846) in the Northern Marmara Sea

Bayram Öztürk

University of Istanbul, Faculty of Fisheries Ordu Caddesi No: 200, Laleli 34470 Istanbul, TURKEY

Abstract

Rose shrimp is one of the important commercial shrimp species in the Marmara Sea. Data from the coastline between Silivri/Istanbul and Tekirdağ during 1987-1988 are presented in this paper. Sampling was performed with shrimp beam trawling. Catch composition and stocks were investigated. In 1987 the carapax length varied between 85 mm and 346 mm. Maximum length class was 186 mm. In 1988 the carapax length varied between 85 mm and 306 mm. The maximum length class was 126 mm. As by-catch, 24 fish species and 20 invertebrate species were caught.

Keywords: Sea of Marmara, Rose shrimp, stocks, catch composition, by-catch

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Vol.15 – 2009 – No.3

Investigations of the rose shrimp Parapenaeus longirostris (Lucas, 1846) in the Northern Marmara Sea
Bayram Öztürk

Assesment of dissolved oxygen in coastal waters of Benghazi, Libya
Joel Prashant Jack, Amal Tahir Abdsalam, Naima Saad Khalifa

Impact of urban wastewaters on groundwater quality in the watershed of Middle Sebou (Morocco)
Elhoussine Derwich, Zineb Benziane, Lahcen Benaabidate, Driss Belghyti

Oil pollution in the Black Sea marine organisms during 2003-2006: mussel, shellfish, and algae
Kasım Cemal Güven, Filiz Nesimigil, Selin Cumalı