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- W4912345 abstract "The study was carried out to evaluate the use of seaweed as biomonitoring in KishIsland, Iran. Seaweed, sediment and seawater samples were collected bimonthlyfrom June 1999 to April 2000 at 5 different sites. Seaweed samples were collected,identified and biomass recorded for 4 seasons from April 1999 to March 2000.Diversity and biomass differed within sites and seasons. The highest seaweedbiomass were recorded from northwest and west sides of study area.The status of selected heavy metals (Cd, Cu, Ni, Pb, V and Zn) were determined inseawater, sediment and 10 dominant seaweed species. Metals level in seawaterranged from 0.02-0.10,0.09-1.22,0.11-0.18,0.27-2.04 and 0.17-0.27 µg l⁻¹ for Cd,Cu, Ni, Pb and Zn, respectively, the metals concentrations were higher during coldseasons compared to the warm seasons. Metal concentrations in sediments rangedfrom 0.18-0.39, 2.39-4.55, 2.30-11.92, 2.92-5.92, 1.69-4.76, 4.04-9.51 µg g⁻¹ dryweight for Cd, Cu, Ni, Pb, V and Zn, respectively. Higher variations in metalconcentrations were observed at sites Symorgh and Darakht-e-Sabz compared toother sites. Metal levels in seaweeds showed considerable variations ranging from 0.44-1.74,0.76-3.42,0.37-2.23, 0.96-4.47, 0.53-2.16 and 3.44-10.23 f.1g got dry weight for Cd,Cu, Ni, Pb, V and Zn, respectively. Cadmium was lower in Chlorophyta than theother groups. Chlorophyta accumulated more Zn, V, Pb, Ni and Cu than othergroups. In addition, variations in metals contents between species were obviousfrom the same habitat and in several cases within the same taxonomic groups.Generally, heavy metals level in this study were relatively lower than the other partsof the world and in some cases lower than the other parts of the Persian Gulf.Toxicity test experiments were carried out usmg Cystoseira myrica from KishIsland, Iran and Sargassum ilicifolium species from Port Dickson, Malaysia. Allselected concentrations of Cd and V and Cu concentrations at above 0.01 mg l⁻¹showed toxic effects to both species. The toxic effects ofNi and Zn on the C. myricaand S. ilicifolium were at higher concentrations than the other metals and in additionCu and V appeared to be more toxic than the other elements.Using both species bioconcentration factors of Pb, Zn and Cu were higher than theother metals. This could be related to their electronegativity values. Elements uptakeby different parts of S. ilicifolium during light period decreased in the followingorder: fronds> receptacles> stipes, whereas during dark period, accumulation ofCd, Cu, V and Ni exhibited similar trend to the above order, but Zn and Pb werehigher in receptacles followed by fronds and stipes." @default.
- W4912345 created "2016-06-24" @default.
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- W4912345 date "2003-08-01" @default.
- W4912345 modified "2023-09-27" @default.
- W4912345 title "A Study on the Potential of Using Seaweed As Biomonitoring Indicator in Kish Island, Iran" @default.
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