David Ngugi

Dr. David Ngugi is a Researcher at GEOMAR - Helmholtz Centre for Ocean Research Kiel, where he leads the Aquatic Microbial Ecogenomics Group (AquaMEG) within the Research Division 3: Marine Ecology, specifically in the Marine Symbioses department. His work bridges microbial ecology, climate change impacts, and host-microbe interactions in aquatic systems.

Dr. Ngugi's research focuses on two primary areas: (1) host-microbe interactions in non-model organisms, particularly examining microbial roles in sponge meta-organisms, invertebrate adaptation at marine/land boundaries, and the evolutionary history of herbivorous surgeonfish microbiomes; and (2) climate change microbiology in aquatic systems, investigating eco-evolutionary responses of microorganisms to environmental change and the relationship between microbial biodiversity and ecosystem services. His approach combines large-scale metagenomic and multi-omics data with computational biology techniques, including machine learning.

His publication record shows a strong emphasis on microbial adaptation to environmental changes, with recent work spanning from European lakes to Red Sea ecosystems. His research demonstrates how microbial communities respond to and shape aquatic environments under climate change pressure, with particular attention to nitrogen cycling processes and host-microbe symbioses.

• ISME12 travel grant from the International Max Planck Research School
• DAAD Doctoral fellowship
• DFG research grants totaling over 500,000 € as PI and Co-PI (2020-2024)

Dr. Ngugi serves as Managing Board Member for Peer Community in Microbiology and as Associate Editor for Marine Biology and Frontiers Microbiology. His research group includes MSc students, PhD candidates, and visiting scientists, reflecting his active role in mentoring the next generation of marine microbial ecologists. The group maintains extensive international collaborations across Germany, Saudi Arabia, South Africa, Tanzania, Switzerland, and Kenya.