Seasonal variations in iodine concentrations in a brown alga (Ecklonia cava Kjellman) and a seagrass (Zostera marina L.) in the northwestern Pacific coast of central Japan
- 52 Downloads
Seasonal variations in iodine concentrations were investigated for two years in a brown alga (Ecklonia cava Kjellman) and a seagrass (Zostera marina L.) occurring in the northwestern Pacific coast of central Japan. The iodine concentration in E. cava was 0.92–5.6 mg per gram dry weight (g‒ 1 DW) (mean ± SD:2.3 ± 1.1 mg g‒1 DW), and its variation was similar to that of other brown algae. In Z. marina, the iodine concentration was 17–110 μg g‒1 DW (61 ± 28 μg g‒ 1 DW) and displayed seasonal variation, as it was high in winter and spring and low in autumn.
KeywordsIodine Seaweed Seagrass Seasonal variation
We wish to sincerely thank Dr. Shinji Ueda for providing insightful suggestions and advice for improving our manuscript. This study was performed as part of joint research by the Japanese Association for Marine Biology (JAMBIO).
- Ar Gall E, Küpper FC, Kloareg B (2004) A survey of iodine content in Laminaria digitate. Bot Mar 47:30–37Google Scholar
- Haroun R, Yokohama Y, Aruga Y (1989) Annual growth cycle of the brown alga Ecklonia cava in central Japan. Sci Mar 53:349–356Google Scholar
- Küpper FC, Carpenter LJ, McFiggans GB, Palmer CJ, Waite TJ, Boneberg E, Woitsch S, Weiller M, Abela R, Grolimund D, Potin P, Butler A, Luther GW III, Kroneck PMH, Meyer-Klaucke W, Feiters MC (2008) Iodide accumulation provides kelp with an inorganic antioxidant impacting atmospheric chemistry. Proc Natl Acad 105:6954–6958CrossRefGoogle Scholar
- Nitschke U, Dixneuf S, Ruth AA, Schmid M, Stengel DB (2013) Molecular iodine (I2) emission from two Laminaria species (Phaeophyceae) and impact of irradiance and temperature on I2 emission into air and iodide release into seawater from Laminaria digitata. Mar Environ Res 92:102–109CrossRefGoogle Scholar
- Thomas PC, Subbaramaish K (1991) Seasonal variations in growth, reproduction, alginic acid, mannitol, iodine and ash contents of brown alga Sargassum wightii. Ind J Mar Sci 20:169–175Google Scholar