Seaweeds are proposed as possible bio-indicators by Marine Strategy Framework Directive (MSFD) is aimed to ensure Good Environmental Status (GES) of the seas by 2020 in the EU. For this purpose, selected metals Al, As, Cd, Co, Cu, Fe, Hg, Mn, Ni, Pb and Zn levels were analysed in Ulva species, and their surrounding water and sediments in Sinop Province, using an ICP MS. The heavy metal concentrations of species were found As < 3, Cd < 0.5, Hg < 0.1, Pb < 5 and Cu < 30 mg/kg dry wt., varied seasonally and regionally. Zinc levels ranged from 16.6 to 268.6 mg/kg; the average value of Zn exceeds maximum permissible limit (50 mg/kg) without Ulva lactuca (32.5 mg/kg). Zn was determined as macro concentrator (BSAF > 2) and Al, Mn and Fe were found as bio-accumulative elements (BCF > 200). The mean concentration data measured from the eight sites (Türkeli, Ayancık, Inceburun, Akliman, Tersane, Karakum, DSİ and Gerze) were found on the order of Fe > Al > Zn > Mn > Cu > Ni > As > Pb > Co > Cd > Hg. The sea lettuce species are cosmopolitan and tolerant towards salinity and pollution. The fact that the results are below the limit values indicates that these species can be regarded as nutrients and flavourings. The effects of anthropogenic pollution in this region must be regularly monitored by bio-monitor species.
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Copyright (c) 2017 Elif Arici, Levent Bat