2026-08-13T20:47:22Zhttps://pdr.repo.nii.ac.jp/?action=repository_oaipmhoai:pdr.repo.nii.ac.jp:000000282026-01-06T01:33:08Z00013
Zooplankton monitoring using a twin NORPAC net during the 60th Japanese Antarctic Research Expedition in austral summer 2018–2019engZooplankton monitoringNORPAC netSouthern Oceanhttp://id.nii.ac.jp/1434/00000015/info:doi/10.20575/00000015Journal ArticleAs part of the monitoring program of the Japanese Antarctic Research Expedition (JARE), zooplankton sampling using a NORPAC (NORth PACific) standard net has been routinely carried out since JARE-14 (1972/73 season) to estimate the long-term trends of abundance, species composition and their temporal/spatial variation in the uppermost 150 m of the Indian Ocean sector of the Southern Ocean. Two separate monitoring surveys were completed during JARE-60 (December 2018 to March 2019). The icebreaker Shirase has a fixed schedule and route, traveling down longitude 110oE each December and returning along 150oE each March. Data collected on these fixed schedule seems to be ideal for long-term monitoring work in this region. We present data from its 2018/2019 voyage. In additions, separate samplings were carried out on board the T/V Umitaka-maru along 110oE longitude in January 2019. This report provides the latest zooplankton data. These transect data can be used as time series and/or seasonal sets over the last 45 years.Polar Data Journal472822020-04National Institute of Polar Research2432-6771https://doi.org/10.17592/001.2019122402publisherhttps://pdr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=28&item_no=1&attribute_id=22&file_no=1CC BYhttps://pdr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=28&item_no=1&attribute_id=22&file_no=2©️ 2020 National Institute of Polar Researchhttps://pdr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=28&item_no=1&attribute_id=22&file_no=3©️ 2020 National Institute of Polar ResearchMarine biology2020-04-24