Naslov
Evaluation of coastal contamination by trace-metals using the seagrass Posidonia oceanica

Autori
Salivas-Decaux, M ; Alglave, C. ; Ferrat, L. ; Bakran-Petricioli, Tatjana ; Pergent-Martini, C. ; Turk, R. ; Pergent, G.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
International Expert Meeting on The impacts of human activities at sea, on the coast and its hinterland on the Northern Adriatic’ s biodiversity, Program i knjiga sažetaka / Turk, Robert - Piran : Zavod Republike Slovenije za varstvo narave, 2008, 16-16

Skup
International Expert Meeting on The impacts of human activities at sea, on the coast and its hinterland on the Northern Adriatic’ s biodiversity

Mjesto i datum
Piran, Slovenija, 07.10.2008. - 08.10.2008

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Seagrass; pressures; Posidonia oceanica; metallic contamination; Adriatic Sea

Sažetak
Human activities (industrial, urban and agricultural) are responsible for the release of contaminants in the coastal environment. Trace-metals, because of their toxicity, their persistence, their low biodegradability and their tendency to concentrate in aquatic organisms, are of particular importance among pollutants. Seagrass are relevant bioindicators of metallic contamination in coastal waters. Posidonia oceanica leaves (100 leaves) were collected in five locations of the North-Eastern Adriatic Sea. Locations were selected on the basis of the presence of different types and levels of human-induced pressures. Concentration of seven trace-metals (Ag, As, Cd, Cu, Hg, Ni and Pb), as well as methyl-mercury content, were determined. In comparison with other locations in the Mediterranean Sea the level of contamination is low in the pristine site of Lavdara (Cu: 4.73 ± ; ; ; 0.01 mg/kg, Ni: 21.40 ± ; ; ; 0.63 mg/kg, Pb: 0.90 ± ; ; ; 0.10 mg/kg) and higher along the Slovenian coast (Cu: 11.83 ± ; ; ; 0.22 mg/kg, Ni: 40.07 ± ; ; ; 2.08 mg/kg, Pb: 1.50 ± ; ; ; 0.06 mg/kg). These contamination levels can be directly linked to human-induced pressures, for most metals, however mercury content seems to be due to natural sources available on the Slovenian coast (mercury sulphide, cinnabar).

Izvorni jezik
Engleski

Znanstvena područja
Biologija

POVEZANOST RADA