A phytoplankton bloom under sea ice recorded with a moored system in lagoon Saroma Ko, Hokkaido, Japan

A phytoplankton bloom under the fast ice formed in a lagoon, Saroma Ko, Hokkaido, Japan, was recorded with a long-term chlorophyll-measuring buoy moored at 3m of water depth of 6m for 161 days from December 1986 to May 1987. A total of 1938 sets of time series data (in situ chlorophyll a, temperatur...

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Bibliographic Details
Main Authors: Mitsuo Fukuchi, Kentaro Watanabe, Atsushi Tanimura, Takao Hoshiai, Hiroshi Sasaki, Hiroo Satoh, Yukuya Yamaguchi
Format: Report
Language:English
Published: National Institute of Polar Research/National Institute of Polar Research/National Institute of Polar Research/National Institute of Polar Research/Faculty of Agriculture, Tohoku University/Tokyo University of Fisheries/College of Liberal Arts, Saitama University 1989
Subjects:
Polar Biology
Proceedings of the NIPR Symposium on Polar Biology
Sea ice
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5044
http://id.nii.ac.jp/1291/00005044/
https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5044&item_no=1&attribute_id=18&file_no=1
Description
Summary:A phytoplankton bloom under the fast ice formed in a lagoon, Saroma Ko, Hokkaido, Japan, was recorded with a long-term chlorophyll-measuring buoy moored at 3m of water depth of 6m for 161 days from December 1986 to May 1987. A total of 1938 sets of time series data (in situ chlorophyll a, temperature and depth) at two-hour intervals were obtained. Chlorophyll a was low (less than 1 μg/l) under cold temperature below -1.5℃ until middle March. From middle March to middle April, when the fast ice still covered the lagoon surface, chlorophyll a increased greatly to 4-5 μg/l. Thereafter it decreased to 2 μg/l.

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