Ecological interactions between marine RNA viruses and planktonic copepods

Authors: Junya Hirai, Seiji Katakura, Hiromi Kasai, Satoshi Nagai

Source: Communications Biology, Vol 7, Iss 1, Pp 1-11 (2024)

Subject Terms: Biology (General), QH301-705.5

File Description: electronic resource

Relation: https://doaj.org/toc/2399-3642

Access URL: https://doaj.org/article/edafb1c68e5843e386dd681a65fbc9c1

Observational evidence for arrival and development of Karenia spp. in the Pacific waters off southeast Hokkaido, Japan in 2021

Authors: Yukiko Taniuchi, Hiroshi Kuroda, Akira Kuwata, Tsuyoshi Watanabe, Takuya Ohnishi, Hiromi Kasai, Tomonori Azumaya, Takuya Nakanowatari

Source: Environmental Research Communications, Vol 7, Iss 2, p 021003 (2025)

Subject Terms: Karenia spp., diatom taxa, oyashio water, modified soya warm current water, repeated hydrographic observation, marine heat wave, Environmental sciences, GE1-350, Meteorology. Climatology, QC851-999

File Description: electronic resource

Relation: https://doaj.org/toc/2515-7620

Access URL: https://doaj.org/article/8f0639fddd974ea6859302e6008ea265

Improving taxonomic classification of marine zooplankton by molecular approach: registration of taxonomically verified 18S and 28S rRNA gene sequences

Authors: Tsuyoshi Watanabe, Junya Hirai, Sirje Sildever, Kazuaki Tadokoro, Kiyotaka Hidaka, Iwao Tanita, Koh Nishiuchi, Naoki Iguchi, Hiromi Kasai, Noriko Nishi, Seiji Katakura, Yukiko Taniuchi, Taketoshi Kodama, Satokuni Tashiro, Misato Nakae, Yuji Okazaki, Satoshi Kitajima, Sayaka Sogawa, Toru Hasegawa, Tomonori Azumaya, Yutaka Hiroe, Daisuke Ambe, Takashi Setou, Daiki Ito, Akira Kusaka, Takeshi Okunishi, Takahiro Tanaka, Akira Kuwata, Daisuke Hasegawa, Shigeho Kakehi, Yugo Shimizu, Satoshi Nagai

Source: PeerJ, Vol 11, p e15427 (2023)

Subject Terms: Japan, Marine biology, Metabarcoding, Pacific Ocean, Plankton, Species identification, Medicine, Biology (General), QH301-705.5

File Description: electronic resource

Relation: https://peerj.com/articles/15427.pdf; https://peerj.com/articles/15427/; https://doaj.org/toc/2167-8359

Access URL: https://doaj.org/article/b6fb859dde474a60b4fd7d2a77c3547f

Empirical estimation of marine phytoplankton assemblages in coastal and offshore areas using an in situ multi-wavelength excitation fluorometer.

Authors: Taketoshi Kodama, Yukiko Taniuchi, Hiromi Kasai, Tamaha Yamaguchi, Misato Nakae, Yutaka Okumura

Source: PLoS ONE, Vol 17, Iss 2, p e0257258 (2022)

Subject Terms: Medicine, Science

File Description: electronic resource

Relation: https://doaj.org/toc/1932-6203

Access URL: https://doaj.org/article/06a982ba07b748489731b19691713cca

Dynamics of Nutrients and Colored Dissolved Organic Matter Absorption in a Wetland-Influenced Subarctic Coastal Region of Northeastern Japan: Contributions From Mariculture and Eelgrass Meadows

Authors: Tomonori Isada, Hiroya Abe, Hiromi Kasai, Masahiro Nakaoka

Source: Frontiers in Marine Science, Vol 8 (2021)

Subject Terms: colored dissolved organic matter (CDOM), inherent optical properties (IOPs), Secchi disk, wetland, seagrass, mariculture, Science, General. Including nature conservation, geographical distribution, QH1-199.5

File Description: electronic resource

Relation: https://www.frontiersin.org/articles/10.3389/fmars.2021.711832/full; https://doaj.org/toc/2296-7745

Access URL: https://doaj.org/article/cec4ebf62f5e499d8d223fa9e6e860a7

Co-Occurrence of Marine Extremes Induced by Tropical Storms and an Ocean Eddy in Summer 2016: Anomalous Hydrographic Conditions in the Pacific Shelf Waters off Southeast Hokkaido, Japan

Authors: Hiroshi Kuroda, Yukiko Taniuchi, Hiromi Kasai, Takuya Nakanowatari, Takashi Setou

Source: Atmosphere, Vol 12, Iss 7, p 888 (2021)

Subject Terms: compound extreme event, anticyclonic mesoscale eddy, tropical storm, coastal shelf water, boundary current, ocean monitoring, Meteorology. Climatology, QC851-999

File Description: electronic resource

Relation: https://www.mdpi.com/2073-4433/12/7/888; https://doaj.org/toc/2073-4433

Access URL: https://doaj.org/article/19a58dcff4054c3481130d871a747d34

Cryptic Zooplankton Diversity Revealed by a Metagenetic Approach to Monitoring Metazoan Communities in the Coastal Waters of the Okhotsk Sea, Northeastern Hokkaido

Authors: Junya Hirai, Seiji Katakura, Hiromi Kasai, Satoshi Nagai

Source: Frontiers in Marine Science, Vol 4 (2017)

Subject Terms: zooplankton, metagenetics, diversity, coastal waters, Okhotsk Sea, Science, General. Including nature conservation, geographical distribution, QH1-199.5

File Description: electronic resource

Relation: http://journal.frontiersin.org/article/10.3389/fmars.2017.00379/full; https://doaj.org/toc/2296-7745

Access URL: https://doaj.org/article/f0b93d312db445fcb6bb5088859210c8

Experimental assessment of copepod survival in response to the harmful dinoflagellate Karenia selliformis from the southeastern coast of Hokkaido, Japan.

Authors: TAKUYA OHNISHI, YUKIKO TANIUCHI, TSUYOSHI WATANABE, TOMOYUKI SHIKATA, HIROMI KASAI

Source: Plankton & Benthos Research; 2024, Vol. 19 Issue 2, p88-97, 10p

Subject Terms: MARINE ecology, ALGAL blooms, FOOD chains, SURVIVAL rate, AUTUMN

Nitrogen Fixation and Diazotroph Community in the Subarctic Sea of Japan and Sea of Okhotsk.

Authors: Takuya Sato, Takuhei Shiozaki, Yukiko Taniuchi, Hiromi Kasai, Kazutaka Takahashi

Source: Journal of Geophysical Research. Oceans; Apr2021, Vol. 126 Issue 4, p1-14, 14p

Subject Terms: NITROGEN content of sewage, OCEAN temperature, WATER temperature, NITROGEN fixation, BIOGEOCHEMICAL cycles

Geographic Terms: SEA of Okhotsk

Seasonal changes of primary production in the southwestern Okhotsk Sea off Hokkaido, Japan during the ice-free period.

Authors: HIROMI KASAI¹ kasaih@fra.affrc.go.jp, KAZUMASA HIRAKAWA²

Source: Plankton & Benthos Research. 2015, Vol. 10 Issue 4, p178-186. 9p.

Subject Terms: *OCEANOGRAPHY, *EGG incubation, *SEASONAL variations in reproduction, *ALGAL blooms

Geographic Terms: SEA of Okhotsk

Isotopic tracers for water masses in the coastal region of eastern Hokkaido.

Authors: Tsuneo Ono, Akira Kusaka, Hiromi Kasai, Yasuhiro Kawasaki, Tomonori Azumaya

Source: Journal of Oceanography; Aug2008, Vol. 64 Issue 4, p525-539, 15p, 1 Diagram, 3 Charts, 9 Graphs, 2 Maps

Subject Terms: WATER masses, STABLE isotopes in ecological research, OCEAN currents, COASTS, NEMURO Strait

Geographic Terms: SEA of Okhotsk, NORTH Pacific Region, HOKKAIDO (Japan), JAPAN

Has the 1998 regime shift also occurred in the oceanographic conditions and lower trophic ecosystem of the Oyashio region?

Authors: Hiromi Kasai, Tsuneo Ono

Source: Journal of Oceanography; Aug2007, Vol. 63 Issue 4, p661-669, 9p

Subject Terms: FISHERIES, MARINE ecology, OCEANOGRAPHIC research

Geographic Terms: NORTH Pacific Ocean

Seasonal and Interannual Variation of DIC in Surface Mixed Layer in the Oyashio Region: A Climatological View.

Authors: Tsuneo Ono, Hiromi Kasai, Takashi Midorikawa, Yusuke Takatani, Kazuhiro Saito, Masao Ishii, Yutaka Watanabe, Katsuyuki Sasaki

Source: Journal of Oceanography; Dec2005, Vol. 61 Issue 6, p1075-1087, 13p