Increase in Si:N drawdown ratio due to resting spore formation by spring bloom-forming diatoms under Fe- and N- Title limited conditions in the Oyashio region Author(s) Sugie, Koji; Kuma, Kenshi; Fujita, Satoshi; Ikeda, Tsutomu JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY, 382(2), 108-116 Citation https://doi.org/10.1016/j.jembe.2009.11.001 Issue Date 2010-01-01 Doc URL http://hdl.handle.net/2115/48987 Type article (author version) File Information 2. Sugie et al. JEMBE2010 MS.pdf Instructions for use Hokkaido University Collection of Scholarly and Academic Papers : HUSCAP 1 1 Increase in Si:N drawdown ratio due to resting spore formation by spring bloom-forming 2 diatoms under Fe- and N-limited conditions in the Oyashio region 3 4 5 Koji Sugie 1┼*, Kenshi Kuma 1, 2, Satoshi Fujita 1 and Tsutomu Ikeda 2 6 7 1: Graduate School of Environmental Science, Hokkaido University, Kita 10-Nishi 5, Kita-ku, 8 Sapporo, Hokkaido 060-0810, Japan 9 ┼Present address: Environmental Science Research Laboratory, Central Research Institute of Electric 10 Power Industry, 1646 Abiko, Abiko-shi, Chiba 270-1194, Japan 11 2: Faculty of Fisheries Science, Hokkaido University, 3-1-1 Minato-cho, Hakodate, Hokkaido 12 041-8611, Japan 13 14 *: AUTHOR for CORRESPONDENCE 15 Koji Sugie 16 Graduate School of Environmental Science, Hokkaido University, Kita 10-Nishi 5, Kita-ku, Sapporo, 17 Hokkaido 060-0810, Japan 18 E-mail:
[email protected] 19 Phone & fax: +81-11-706-2324 20 21 Key Words 22 diatom; iron; resting spore; Si:N drawdown ratio; spring bloom; Oyashio region 23 24 Running Head 25 Fe- and N-limited resting spores 26 27 28 29 30 2 31 ABSTRACT: Resting spore formation and Si:N drawdown ratios were investigated under iron (Fe)- 32 and nitrogen (N)-limited conditions using a unialgal culture of Thalassiosira nordenskioeldii and 33 natural phytoplankton assemblages during the spring bloom in the Oyashio region.