Details of a Researcher - UCHIDA Keiichi

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UCHIDA Keiichi

Job title: Professor

Department: Department of Marine Resources and Energy

Degree: Doctor

Major: 情報学

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Research Interests 【 display / non-display 】

Biotelemetry
Global Navigation Satellite System
Marine Debris
Fish capture technology
RFID: Radio Frequency Identification

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Research Areas 【 display / non-display 】

Life Science / Aquatic life science
Life Science / Aquatic bioproduction science

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Papers 【 display / non-display 】

A numerical model approach on floating riverine plastic debris with wind-induced re-drifting process from beaches along the Gulf of Thailand

Pontipa Luadnakrob、María Belén Alfonso、Atsuhiko Isobe、Tahira Irfan、Keiichi Uchida、Hisayuki Arakawa、Sukchai Arnupapboon、Nathacha Changphetphol、Suchana Chavanich、Voranop Viyakarn , 2025.12

Regional Studies in Marine Science

DOI
Settling and Along-Isopycnal Subduction of Small Microplastics Into Subsurface Layers of the Western North Pacific Ocean

Mao Kuroda, Atsuhiko Isob, Keiichi Uchida, Ryuichi Hagita, Satoru Hamada , 2025.09

Environmental Science & Technology

DOI
Development of a ship-based camera monitoring system for floating marine debris

Ruofei Yang *, Keiichi Uchida , Yoshinori Miyamoto , Hisayuki Arakawa , Ryuichi Hagita , Tetsutaro Aikawa , 2024.03

Marine Pollution Bulletin

DOI
Relationship between escape behavior of juvenile Pacific bluefin tuna and bag net shape of set net

田中友樹 , 秋山清二, 泉澤光紀, 高田将平, 野呂英樹, 内田圭一　他 , 2025.07

日本水産学会誌

DOI

OACIS Paper URL
Abundance and potential sources of floating polystyrene foam macro- and microplastics around Japan

Mao Kuroda, Atsuhiko Isobe, Keiichi Uchida, Tadashi Tokai, Toshihide Kitakado, Miho Yoshitake, Yoshinori Miyamoto, Tohru Mukai, Keiri Imai, Kenichi Shimizu, Mitsuharu Yagi, Takahisa Mituhasi, Akimasa Habano , 2024.03

Marine Pollution Bulletin

DOI

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Books 【 display / non-display 】

Proceedings of the 15th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG15), July 2-5, 2019, Kyoto, Japan

International Symposium on Origin of Matter and Evolution of Galaxies, Kawabata T., Itagaki N., Kanada-En'yo Y., Maeda K., Nishimura N., Ogata K., 嶋達志, Tamii A., Terada K., Uchida H., Yamaguchi H., Yoshida K. , 2020

Physical Society of Japan , 0-0
バイオロギングシリーズ2　動物たちの知られざる世界を探る

日本バイオロギング研究会 , 2018.12

京都通信社 , 前後自在に体をくねり、仕掛けた餌を盗み食うアナゴ , 33-37
水産と海洋の科学

全国高等学校水産教育研究会[編]　東京海洋大学/東海大学/海洋研究開発機構[協力] 執筆者16名 , 2014.04

海文堂 , 第5節　船の役割 , 52-62
最新水産ハンドブック（島一雄他編）

島一雄ほか , 2012.10

講談社 , 測位装置 , 105-106
東京湾の魚類

河野博 (監修), 加納光樹 (編集), 横尾俊博 (編集) , 2011.10

平凡社 , 江戸前寿司の定番（マアナゴ）の生態と漁業 , 0-0

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Grant-in-Aid for Scientific Research 【 display / non-display 】

Spatio-temporal dynamics of deterioration of marine microplastics

Project Period (FY)： 2022/04 - 2025/03 Investigator(s): 荒川久幸

Grant-in-Aid for Scientific Research(B) Co-Investigator 23K24973
微細マイクロプラスチックの動態を含む海洋プラスチック循環の包括的解明

Project Period (FY)： 2021/07 - 2026/03 Investigator(s): 磯辺篤彦

Grant-in-Aid for Scientific Research(S) Co-Investigator 21H05058
Comprehensive studies on the circulation of ocean plastics including very small microplastics

Project Period (FY)： 2021/07 - 2026/03 Investigator(s): 磯辺篤彦

Grant-in-Aid for Scientific Research(S) Co-Investigator 21H05058
Sources and behaviors of broad-spectrum phenolic endocrine distrusting chemicals (EDCs) and historical trends of their pollution

Project Period (FY)： 2020/04 - 2025/03 Investigator(s): 高田秀重

Grant-in-Aid for Scientific Research(A) Co-Investigator 20H00627
Studies on catching performance of newston net for standardization of microplastics sampling method

Project Period (FY)： 2020/04 - 2023/03 Investigator(s): Tokai Tadashi

Grant-in-Aid for Scientific Research(B) Co-Investigator 20H03060

This study clarified the sampling characteristics (e.g., mesh selectivity) and fluid characteristics (e.g. filtration efficiency, fluid resistance, and mesh mouth dynamics) of a neuston net with 0.350 mm mesh size, which is internationally standard for collecting microplastics (MPs) drifting on the ocean surface.
In particular, mesh selectivity (retention probability by MPs size) was estimated, which suggested that fine MPs (especially fibrous) were missing from the mesh. And a correction method for MPs size composition was also presented. Visualization of the flow around a neuston net towed with the net mouth half out to sea surface was conducted to estimate the filtration efficiency by towing speed. The water flowmeter properly attached to the net mouth was demonstrated to effective to estimate a water volume filtered by the net. The hydrodynamic characteristics of a fine mesh plane netting were clarified, providing basic data for hydrodynamic studies on fine mesh nets.