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Organic-walled dinoflagellate cysts from surface sediments of Akkeshi Bay and Lake Saroma, North Japan


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Title: Organic-walled dinoflagellate cysts from surface sediments of Akkeshi Bay and Lake Saroma, North Japan
Authors: Matsuoka, Kazumi
Issue Date: Jul-1987
Citation: 長崎大学教養部紀要. 自然科学篇. 1987, 28(1), p.35-123
Abstract: Modern dinoflagellate cysts recovered from surface sediments of Akkeshi Bay and Lake Saroma in Hokkaido, North Japan are described under the cyst-based classification. They contain ten genera and twenty-five species which include six new species of the Protoperidiniaceae (Brigantedinium grande, B. asymmetricum, B. irregulare, Lejeunecysta psuchra L.? epidoma, and Trinovantedinium pallidifulvum) and five indeterminate species. The dinoflagellate cyst assemblages in both Lake Saroma and Akkeshi Bay are characterized by the dominance of the protoperidiniacean cysts especially brown spherical Brigantedinium species and the scarcity of species of Spiniferites, Lingulodinium and Tuberculodinium. Comparison with the previous studies around the Japanese Islands, the assemblage is considered to represent a typical cold water one. Based on modern biological and physical oceanographic data in the world, the protoperidiniacean-dominated cyst assemblage suggests the high primary production in both upwelling and other eutrophy regions.
URI: http://hdl.handle.net/10069/16587
ISSN: 02871319
Type: Departmental Bulletin Paper
Text Version: publisher
Appears in Collections:Volume 28, No. 1

Citable URI : http://hdl.handle.net/10069/16587

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