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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences >
北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University >
第74巻 第1号 >
East-west differences of the microplankton community along the 47°N transect in the subarctic Pacific during the summer of 2021
| Title: | East-west differences of the microplankton community along the 47°N transect in the subarctic Pacific during the summer of 2021 |
| Authors: | Egashira, Kosuke Browse this author | | Huang, Yu-Sin Browse this author | | Matsuno, Kohei Browse this author →KAKEN DB | | Yamaguchi, Atsushi Browse this author →KAKEN DB |
| Keywords: | Microplankton | | Community structure | | Diatom | | Dinoflagellate | | East-west differences | | Subarctic Pacific |
| Issue Date: | 4-Aug-2024 |
| 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 |
| Journal Title(alt): | Bulletin of Fisheries Sciences, Hokkaido University |
| Volume: | 74 |
| Issue: | 1 |
| Start Page: | 23 |
| End Page: | 33 |
| Abstract: | The subarctic Pacific includes the coast of Hokkaido in the west to the Gulf of Alaska in the east. This region is known as one of the worlds major high nutrient low chlorophyll ocean areas. Despite its importance, little information is available about the east-west differences in the microplankton communities of this region. This study examined east-west differences in the microplankton community structure along the transect of 47°N latitude in the subarctic Pacific during July-August 2021. The microplankton cell density at each station ranged between 2.3 and 117.8 cells mL-1. The microplankton community was classified into A, B, and C1-C4 groups at a 48.1% similarity level. Groups A and B, dominated by dinoflagellates, occurred at the ends of the transect’s eastern and western regions, respectively. The groups C1-C4, dominated by diatoms, were seen between groups A and B in the middle of the transect. The spatial distribution of each subgroup (C1-C4) was separated from east to west. Group C1 had the highest cell density, predominated by Pseudo-nitzschia spp., which was seen for the two adjacent stations at 175.0-171°W. This group is considered to have arisen due to the effect of mesoscale eddies originating from the coast of the Gulf of Alaska. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/92923 |
| Appears in Collections: | 北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University > 第74巻 第1号
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