caa a22 4500 605455333 CHVBK 20210128100211.0 cr unu---uuuuu 210128e20151201xx s 000 0 eng 10.1007/s10872-015-0312-6 doi (NATIONALLICENCE)springer-10.1007/s10872-015-0312-6 Regeneration dynamics of iron and nutrients from bay sediment into bottom water of Funka Bay, Japan [Elektronische Daten] [Nanako Hioki, Kenshi Kuma, Yuichiroh Morita, Daichi Miura, Atsushi Ooki, Seiji Tanaka, Hiroji Onishi, Tetsuya Takatsu, Naoto Kobayashi, Yoshihiko Kamei] We studied iron remobilization and nutrient regeneration in bottom water of Funka Bay, Japan, bimonthly from August 2010 to December 2011. The bay basin (bottom depth, 92-96m) is separated from the northwest Pacific Ocean at its mouth by a sill with a depth of 60m. After a spring phytoplankton bloom during early March-early April, nutrients in bay bottom water tended to accumulate with time until August-September, and to increase gradually with depth during April-October, by the oxidative decomposition of settling particulate organic matter on the bay bottom. In contrast, the process of iron remobilization into bottom water of the bay is remarkably different from nutrient regeneration. The much higher concentrations of dissolved and total dissolvable iron near the bottom and the seasonally variable relationship between dissolved iron concentration and apparent oxygen utilization in bay bottom water likely reflect a balance between dissolved iron input and removal processes within the bay bottom water. The release of soluble Fe(II) from reducing bay sediments might induce the high concentrations of dissolved and total dissolvable iron in deep-bottom waters of Funka Bay and might be one of the most important sources of iron in Funka Bay. The upward transport of iron from the bay bottom to the surface water during the winter vertical mixing may play an important role in the supply of bioavailable iron for phytoplankton growth in the coastal waters. The Oceanographic Society of Japan and Springer Japan, 2015 Iron cycling nationallicence Nutrients nationallicence Dissolved oxygen nationallicence Humic-like dissolved organic matter nationallicence Bay sediment nationallicence Funka Bay (Japan) nationallicence Hioki Nanako Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut Kuma Kenshi Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut Morita Yuichiroh Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut Miura Daichi Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut Ooki Atsushi Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut Tanaka Seiji Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut Onishi Hiroji Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut Takatsu Tetsuya Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut Kobayashi Naoto Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut Kamei Yoshihiko Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut Journal of Oceanography Springer Japan 71/6(2015-12-01), 703-714 0916-8370 71:6<703 2015 71 10872 https://doi.org/10.1007/s10872-015-0312-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10872-015-0312-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hioki Nanako Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut NATIONALLICENCE 700 1- Kuma Kenshi Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut NATIONALLICENCE 700 1- Morita Yuichiroh Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut NATIONALLICENCE 700 1- Miura Daichi Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut NATIONALLICENCE 700 1- Ooki Atsushi Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut NATIONALLICENCE 700 1- Tanaka Seiji Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut NATIONALLICENCE 700 1- Onishi Hiroji Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut NATIONALLICENCE 700 1- Takatsu Tetsuya Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut NATIONALLICENCE 700 1- Kobayashi Naoto Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut NATIONALLICENCE 700 1- Kamei Yoshihiko Faculty of Fisheries Sciences, Hokkaido University, 3-1-1 Minato, 041-8611, Hakodate, Hokkaido, Japan aut NATIONALLICENCE 773 0- Journal of Oceanography Springer Japan 71/6(2015-12-01), 703-714 0916-8370 71:6<703 2015 71 10872