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北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University >
第66巻 第1号 >


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Title: 西部北太平洋155°E線に沿った春季植物プランクトン群集の水平および鉛直分布:多波長励起蛍光光度計による解析
Other Titles: The Spatial and Vertical Distributions of a Spring Phytoplankton Community along 155°E in the Western North Pacific : An In Situ Multi-Excitation Fluorometer Analysis
Authors: 松本, 健太郎1 Browse this author
有馬, 大地2 Browse this author
松野, 孝平3 Browse this author
山﨑, 康裕4 Browse this author
大西, 広二5 Browse this author →KAKEN DB
大木, 淳之6 Browse this author →KAKEN DB
平譯, 享7 Browse this author →KAKEN DB
山口, 篤8 Browse this author →KAKEN DB
今井, 一郎9 Browse this author →KAKEN DB
Authors(alt): Matsumoto, Kentaro1
Arima, Daichi2
Matsuno, Kohei3
Yamasaki, Yasuhiro4
Onishi, Hiroji5
Ooki, Atsushi6
Hirawake, Toru7
Yamaguchi, Atsushi8
Imai, Ichiro9
Keywords: Chl. a sensor
Multi-excitation fluorometer
Spring bloom
Issue Date: 18-Mar-2016
Publisher: 北海道大学大学院水産科学研究院
Journal Title: 北海道大学水産科学研究彙報
Volume: 66
Issue: 1
Start Page: 29
End Page: 38
Abstract: The spring phytoplankton community in the western North Pacific is characterized by large variability in both the horizontal and verical dimensions. To evaluate this variability, phytoplankton communitiesat 39°30'N-44°00'N along 155°E were investigated in situ using a multi-excitation fluorometer during May 2014. The sea surface chlorophyll a(Chi. a) level was high and composed mainly of diatoms near 43°30'N-42'N, while it was low and composed of dinoflagellates south of 40°N. Based on seven fixed-station investigations, the phytoplanklton communities were classified into 4 types : a low Chl. a level before bloom (44°N), massive diatom bloom(42°N-43°N), low Chl. a level with dinoflagellates(40°N-41°N) and lowest Chl.a(at the southernmost station at 39°30'N). These phytoplankton communities corresponded with the formation of a water mass separating the Subartctic front(SAF) and Subarctic boundary(SAB). Multi-excitation fluorometry data showed a high correlation with Chl. a measurements obtained via Thrmo-salinometer and biovolume microscopic analyses(r²=0.67-0.97,p<0.05). Thus, we concluded that a multi-excitation fluorometer can be applied for the evaluation of detailed spatial and temporal changes in the phytoplankton community at various locations.
Type: bulletin (article)
Appears in Collections:北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University > 第66巻 第1号

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