Journal of Oceanography

, Volume 75, Issue 1, pp 111–117 | Cite as

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

  • Yuhi SatohEmail author
  • Shigeki Wada
  • Shun’ichi Hisamatsu
Short Contribution


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.


Iodine 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).


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Copyright information

© The Oceanographic Society of Japan and Springer Japan KK, part of Springer Nature 2018

Authors and Affiliations

  • Yuhi Satoh
    • 1
    Email author
  • Shigeki Wada
    • 2
  • Shun’ichi Hisamatsu
    • 1
  1. 1.Department of RadioecologyInstitute for Environmental Sciences (IES)AomoriJapan
  2. 2.Shimoda Marine Research CenteUniversity of TsukubaShizuokaJapan

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