Dr Marika Takeuchi Job Title Research Scientist – Ocean Biogeochemist Site Southampton Biography Publications High-frequency observations of plankton and particle abundance from a cabled observatory off Japan Authors Yamazaki, Hidekatsu ORCID: https://orcid.org/0000-0001-8794-2188; Penninck, Silvana B.; Freitas, Gabriel; De-La-Cruz, Leandro T.; Takeuchi, Marika; Tanaka, Mamoru; Lopes, Rubens M.. 2026 High-frequency observations of plankton and particle abundance from a cabled observatory off Japan. Ocean-Land-Atmosphere Research, 5. 10.34133/olar.0132 Publication year 2026 Publication type Article Machine learning for improved size estimation of complex marine particles from noisy holographic images Authors Liu, Zonghua; Takeuchi, Marika; Contreras, Yéssica; Thevar, Thangavel; Nimmo-Smith, Alex; Watson, John; Giering, Sarah L. C. ORCID: https://orcid.org/0000-0002-3090-1876. 2025 Machine learning for improved size estimation of complex marine particles from noisy holographic images. Frontiers in Marine Science, 12. 10.3389/fmars.2025.1587939 Publication year 2025 Publication type Article Cross-calibration of multiple optical instruments for the measurement of particle size distributions in water Authors Takeuchi, Marika; Liu, Zonghua; Major, Will; Contreras-Pacheco, Yéssica Vanessa; Thevar, Thangavel; Williams, Jack Rees; Giering, Sarah Lou Carolin ORCID: https://orcid.org/0000-0002-3090-1876. 2025 Cross-calibration of multiple optical instruments for the measurement of particle size distributions in water. Frontiers in Marine Science, 12. 10.3389/fmars.2025.1538403 Publication year 2025 Publication type Article Size distribution of aggregates across different aquatic systems around Japan shows that stronger aggregates are formed under turbulence Authors Takeuchi, Marika; Giering, Sarah L. C. ORCID: https://orcid.org/0000-0002-3090-1876; Yamazaki, Hidekatsu. 2024 Size distribution of aggregates across different aquatic systems around Japan shows that stronger aggregates are formed under turbulence. Limnology and Oceanography. 10.1002/lno.12686 Publication year 2024 Publication type Article Freshwater spreading far offshore the Japanese coast Authors Wagawa, Taku; Igeta, Yosuke; Sakamoto, Kei; Takeuchi, Marika; Okuyama, Shinobu; Abe, Shoko; Yabe, Itsuka. 2024 Freshwater spreading far offshore the Japanese coast. Scientific Reports, 14 (1). 10.1038/s41598-024-63275-6 Publication year 2024 Publication type Article