|
|
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72巻 第1号 >
Seasonal, regional, and diel changes in the abundance of five large, dominant copepods in the western subarctic Pacific : Insights from Continuous Plankton Recorder surveys
| Title: | Seasonal, regional, and diel changes in the abundance of five large, dominant copepods in the western subarctic Pacific : Insights from Continuous Plankton Recorder surveys |
| Authors: | Fukai, Yutaka Browse this author | | Chiba, Sanae Browse this author | | Batten, Sonia Browse this author | | Sasaki, Yuka Browse this author | | Matsuno, Kohei Browse this author →KAKEN DB | | Richardson, Anthony J. Browse this author | | Yamaguchi, Atsushi Browse this author →KAKEN DB |
| Keywords: | Continuous Plankton Recorder | | Copepods | | Eucalanus bungii | | Metridia pacifica | | Neocalanus spp. | | Western Subarctic Pacific |
| Issue Date: | 22-Aug-2022 |
| 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: | 72 |
| Issue: | 1 |
| Start Page: | 17 |
| End Page: | 26 |
| Abstract: | In the marine ecosystem, mesozooplankton, especially large copepods, have an important role both in the mediation of primary production to higher trophic levels and in the transportation of organic materials from the surface to the deep ocean, termed the biological pump. Continuous Plankton Recorder (CPR) surveys have been used as a long-term monitoring method for mesozooplankton over wide geographical areas, including the North Pacific, where a CPR survey began in 2000. In this study, we used CPR samples collected in the western subarctic Pacific during 2001-2015 to investigate the abundance and population structure of five large, dominant copepods (Neocalanus cristatus, N. flemingeri, N. plumchrus, Eucalanus bungii and Metridia pacifica) and evaluate the differences in season, region, and diel scales between species. Significant seasonal changes in abundance and population structure were detected, and these changes were considered to reflect the life history of each species. Regional differences were detected for the three Necalanus species and were considered to be related to sea surface temperature and food availability. Diel changes in abundance were observed for N. cristatus and M. pacifica, with both species more abundant near the surface at night suggesting diel vertical migration. |
| Type: | bulletin (article) |
| URI: | http://hdl.handle.net/2115/86613 |
| Appears in Collections: | 北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University > 第72巻 第1号
|
|
