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Title: Cruise AVI-II 93: preliminary data from the Iskenderun Bay (Turkey)
Authors: Basso, Nota di Daniela
Spezzaferri, Silvia
Yanko-Hombach, Valentyna V.
Hayrettin Koral e Niyiazi Avsar
Янко-Хомбах, Валентина Венедиктовна
Янко-Хомбах, Валентина Венедиктівна
Issue Date: 1993
Keywords: Pollution
Benthic assemblages
Iskenderun Bay
Series/Report no.: ;No 9
Abstract: Preliminary results obtained by the AVI-II Cruise in the Iskenderun Bay (south-eastern Turkey), are presented. The Avicenna Project aims to verify the possibility of using benthic foraminifera lor low-cost monitoring ol heavy metal pollution. About one-hundred and forty grab samples and four cores were collected ranging in depth from 7 to about 85 m, C'l'D data were also collected at all stations. A more detailed sampling was performed close to the possible main pollution sources: iron-steel complex, fertilizer industry, pipe-terminal, harbour, towns. Chemico-physical conditions in the Bay are controlled mainly by the general circulation pattern, and by the fresh water inflow from the Ceyhan River. The sediments mostly consist of silty clays in the deepest area of the bay, of silty sands at shallower depth, above 45 m. Qualitative obseiwations on macrobenthos allowed to identify biocoenoses and thanatocoenoses related to the coastal detritic (DC), coastal terrigenous mud (\ГГС) and coralligenous (C) assemblages. Evidence from cores and some grab samples revealed a dramatic environmental change from hard bottom communities dominated by the coral Cladocora caespitosa to the present-day muddy bottoms assemblage.
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