Profiles
Academic Awards
2024 | Best oral presentation, 1st place. Asian School of the Environment 10th Anniversary Conference, Singapore.
2024 | Best oral presentation, 2nd place. 3rd Protistology Nordics Meeting. Uppsala, Sweden.
2024 | Research travel grant award. NTU ASE Graduate Student Award for community service.
2023 | Best presentation, 2nd place. NTU College of Science 3-Minute-Thesis competition.
Teaching Experiences
2024/10/23 and 2023/10/25: Guest Lecturer. ES4303 Marine and Freshwater Ecology (undergraduate module), NTU. Introduction to molecular and microbial ecology in the Arctic Ocean.
2024/03/18: Guest Lecturer. ES2303 Introduction to Ecology (undergraduate module), NTU. Microbial Ecology and Molecular Research.
2024/03/11: Guest Lecturer. A Levels H3 Biology. Hwa Chong Institution, College. Plankton ecology: Characteristics, Adaptations, and Global Distribution of Phytoplankton.
2023/05/03: Guest Lecturer. Science and Math Talent Programme, Hwa Chong Institution, High School. From Arctic to tropics: Marine protist diversity and ecology.
2022/11/04: Guest Lecturer. LSM4260 Plankton Ecology (undergraduate module), National University of Singapore. Marine microbial eukaryotes diversity and ecology, with emphasis on Arctic under-ice bloom
2021-2023: Teaching Assistant / Tutor. ES2304 Microbes in Natural Ecosystems (undergraduate module), NTU. Lab practicals, tutorials and R-language consultation.
Research Supervision
2026: Mentor, Jurek Seet, SBS, NTU, Final Year Project – Resilience of seagrass microbiome to seasonal monsoon variability.
2026: Mentor, Ang Shi Ying, SBS, NTU, Final Year Project – Ecolgical solutions for enhancing coral resilience: microbiome analysis during environmental acclimation.
2025-2026: Mentor, Kimberly Tan, CNYang undergraduate research attachment, SBS, NTU. Microbiome variation of Halophila ovalis populations across Singapore.
2025-2026: Mentor, Tan Yuan Fang, CNYang undergraduate research attachment, ASE, NTU. Seagrass microbiome and plant health.
2023-2025: Mentor, Hanna Strindberg, Master student, University of Oslo – Saprophytic protist interactions.
2023-2025: Mentor, Sandra Irén, Master student, University of Oslo – Saprophytic protist diversity and biogeography.
2023: Co-supervisor, Faith Sim Chin Yee, ASE, NTU, Final Year Project – A global protist: dynamics of marine Labyrinthulomycetes across ecosystems. Thesis.
2022: Mentor, Vartika Goenka, ASE, NTU, Research Assistant Trainee – Field sampling, lab skills including DNA extraction, PCR, isolation and culturing of microalage.
2022: Co-supervisor, Bryan Teo Jun-Kai, ASE, NTU, URECA (Undergraduate Research Experience on CAmpus) – Monsoonal variation in Singapore Labyrinthulomycetes community. Final report.
Conference Presentations
2025/10/30-31: Blue Wave Conference. Shenzhen, China. Across a warming world: Microbes as sentinels of change from the Arctic to tropical coasts. Oral presentation.
2024/08/07-08: Asian School of the Environment 10th Anniversary Conference. Singapore. Uncovering microbial interactions in the ocean:
a molecular and microscopy approach. Oral presentation.
2024/05/02-03: 3rd Protistology Nordics Meeting. Uppsala, Sweden. Functional interactions and community metabolism of protists in the under-ice Arctic bloom. Oral presentation.
2023/08/21-25: 8th European Phycological Congress. Brest, France. Under-ice bloom: Temporal dynamics and biogeography of Arctic ice algae and phytoplankton. Oral presentation.
2022/05/28 – 06/04: Gordon Research Conference on Marine Microbes. Les Diablerets, Switzerland. Temporal dynamics of the under-ice Arctic phytoplankton spring bloom. Poster presentation.
Publications
Sim, C.W.H.*, Walde, M., Strindberg, H., Kaur A., Le Panse, S., Gourvil, P., Eikren, W., Vaulot, D. & Lopes dos Santos, A. (2026). Labyrinthula merlionensis sp. nov.: A novel labyrinthulid infecting marine diatoms. Journal of Eukaryotic Microbiology, 73(5), e70111. https://doi.org/10.1111/jeu.70111.
Sim, C.W.H. & Case R.J. (2026). Selection strategies for nutrient cycling in seagrass microbiome. Under review.
Pereyra, J.P.A., Sim, C.W.H., Loh A.A.R., Lim J. J. H., Luk H.H.C., Maithani P., Leong, W., Khaw, J.C.H., Tiaras, I., Kirchberger, P.C., Lim L.J.W., Ng L.C.S., Deignan, L.K., Tanzil, J.T.I. & Case, R.J. (2026). A beneficial megaplasmid transforms an opportunistic bacterial pathogen to benefit coral by extending their thermal range. Under review. BioRxiv: https://doi.org/10.64898/2026.06.19.733351
Maithani P., Sim, C.W.H., Srinivas, S., Kwek Z.C. & Case R.J. (2026). Uncoupling of seagrass host selection and succession for microbial guilds in meadow chronosequence. Under review. bioRxiv: https://doi.org/10.64898/2026.03.24.714081
Sim, C.W.H.*, Ribeiro, C.G., Le Gall, F., Marie, D., Probert I., Gourvil, P., Lovejoy, C., Vaulot, D. & Lopes dos Santos, A. (2025). Temporal dynamics and biogeography of sympagic and planktonic photosynthetic microbial eukaryotes during the under-ice Arctic bloom. ISME Communications, 5(1), ycaf075. https://doi.org/10.1093/ismeco/ycaf075
Sim, C. W. H. (2024). Dynamics and interactions of protists in marine ecosystems. [Doctoral thesis, Nanyang Technological University, Singapore]. Nanyang Technological University Digital Repository. DOI: 10.32657/10356/182770
Vaulot, D., Sim, C.W.H., Ong, D., Teo, B., Biwer, C., Jamy, M., & Lopes dos Santos, A. (2022). metaPR2: A database of eukaryotic 18S rRNA metabarcodes with an emphasis on protists. Molecular Ecology Resources, 22, 3188–3201. DOI: 10111/1755-0998.13674
Kenyon, T.M., Doropoulos, C., Dove, S., Webb, G.E., Newman, S.P., Sim, C.W.H., Arzan, M. & Mumby, P.J. (2020). The effects of rubble mobilisation on coral fragment survival, partial mortality and growth. Journal of experimental marine biology and ecology, 533, 151467. DOI: 10016/j.jembe.20201467
Sim, C.W.H., Ribeiro, C.G., Probert, I., Gourvil, P., Vaulot, D. & Lopes dos Santos, A. (In Prep). Functional succession and interactions of protists during the under-ice Arctic phytoplankton spring bloom.
*indicates corresponding author
Home | Clarence WH Sim 