MG / jovian.bio

Oceanography / Bioinformatics / Complex systems

Mora Groussman

Marine molecular ecology.
Data that makes living systems legible.

I study how marine microorganisms respond to a changing environment—and build the reference resources and computational workflows that make those responses measurable.

My work connects ocean field studies, molecular ecology, and reproducible bioinformatics, with an independent research practice in human–AI collaboration.

Publications appear under Mora J. Groussman and Ryan D. Groussman. ORCID 0000-0001-7874-7217

01 / Selected research

From sequences
to ecological understanding.

Reference libraries, environmental gene catalogs, and collaborative studies that connect molecular signals to the organisms and ecosystems behind them.

Reference infrastructureScientific Data · 2023

MarFERReT

Marine Functional EukaRyotic Reference Taxa: an open-source, version-controlled protein reference library for identifying marine microbial eukaryotes in environmental sequence data.

Contribution: First-author research, reference-data curation, and reproducible database construction.

Curated taxonomy, documented inputs, and a containerized build workflow make the reference collection inspectable and reusable.

Environmental dataScientific Data · 2024

North Pacific Eukaryotic Gene Catalog

Metatranscriptome assemblies, taxonomic and functional annotations, and read-abundance data connecting North Pacific microbial communities across environmental gradients and the daily light cycle.

Contribution: First-author research, data integration, and computational processing.

261metatranscriptomes
4research cruises
5study datasets
Ecological inferencePNAS · 2022
Frontiers · 2025

Protist trophic strategies

Collaborative studies use metatranscriptomes and machine learning to investigate how marine protists obtain energy through photosynthesis, feeding, or a combination of both.

2025 contribution: Methodology, data curation, and manuscript review, with substantial involvement in the study sequence datasets.

02 / Open resources

Data, with a way back
to its origins.

Public resources associated with my research. Sequence reads, processed data, and reference collections are linked separately so you can choose the appropriate starting point.

For reuse, consult the linked record for its version, license, methods, and citation instructions.

03 / Fieldwork

Grounded in the ocean.

Field records connect the computational work to sampling conditions, environmental measurements, and the people who make ocean research possible.

Chief scientist
28 September 2021
RC0064

Preparing the next science party.

I led a one-day training cruise aboard R/V Rachel Carson for fellow graduate students preparing for the Gradients 4 expedition. The cruise brought research preparation into a working shipboard setting.

Expeditions behind the gene catalog

Four cruises support five study datasets; Gradients 3 includes both transect and diel sampling.

2015 / KM1513

SCOPE HOE-Legacy 2 / Diel1

R/V Kilo Moana

2016 / KOK1606

Gradients 1

R/V Kaʻimikai-O-Kanaloa

04 / Publications

A connected body of work.

Peer-reviewed research spanning marine microbial ecology, nutrient cycling, functional genomics, and computational resources.

  1. 2025
    Thomas, E., Groussman, M. J., Coesel, S. N., Hawco, N. J., Bundy, R. M., & Armbrust, E. V. Latitude- and depth-driven divergence in protist trophic strategies revealed by a machine learning model. Frontiers in Microbiology, 16, 1602162.
  2. 2025
    Hawco, N. J., et al., including Groussman, R. D. Anthropogenic iron alters the spring phytoplankton bloom in the North Pacific transition zone. PNAS, 122(23), e2418201122.
  3. 2025
    Park, J., Heal, K. R., Ingalls, A. E., Groussman, R. D., Bartolek, Z., Armbrust, E. V., & Bundy, R. M. Efficient cobalamin uptake and cycling contribute to the lack of cobalamins in the surface cobalt-binding ligand pool in the North Pacific. Limnology and Oceanography Letters, 10(4), 547–556.
  4. 2024
    Groussman, R. D., Coesel, S. N., Durham, B. P., Schatz, M. J., & Armbrust, E. V. The North Pacific Eukaryotic Gene Catalog of metatranscriptome assemblies and annotations. Scientific Data, 11, 1161.
  5. 2023
    Groussman, R. D., Blaskowski, S., Coesel, S. N., & Armbrust, E. V. MarFERReT, an open-source, version-controlled reference library of marine microbial eukaryote functional genes. Scientific Data, 10(1), 926.
  6. 2023
    Graff van Creveld, S., Coesel, S. N., Blaskowski, S., Groussman, R. D., Schatz, M. J., & Armbrust, E. V. Divergent functions of two clades of flavodoxin in diatoms mitigate oxidative stress and iron limitation. eLife, 12, e84392.
  7. 2023
    Park, J., Durham, B. P., Key, R. S., Groussman, R. D., et al. Siderophore production and utilization by marine bacteria in the North Pacific Ocean. Limnology and Oceanography, 68(7), 1636–1653.
  8. 2022
    Lambert, B. S., Groussman, R. D., Schatz, M. J., Coesel, S. N., Durham, B. P., Alverson, A. J., … & Armbrust, E. V. The dynamic trophic architecture of open-ocean protist communities revealed through machine-guided metatranscriptomics. PNAS, 119(7).
  9. 2022
    Boysen, A. K., Durham, B. P., Kumler, W., Key, R. S., Heal, K. R., Carlson, L., Groussman, R. D., … & Ingalls, A. E. Glycine betaine uptake and metabolism in marine microbial communities. Environmental Microbiology.
  10. 2021
    Groussman, R. D., Coesel, S. N., Durham, B. P., & Armbrust, E. V. Diel-regulated transcriptional cascades of microbial eukaryotes in the North Pacific Subtropical Gyre. Frontiers in Microbiology, 12, 682651.
  11. 2021
    Boysen, A. K., Carlson, L. T., Durham, B. P., Groussman, R. D., Aylward, F. O., Ribalet, F., … & Ingalls, A. E. Particulate metabolites and transcripts reflect diel oscillations of microbial activity in the surface ocean. mSystems, 6(3).
  12. 2021
    Coesel, S. N., Durham, B. P., Groussman, R. D., Hu, S. K., Caron, D. A., Morales, R. L., … & Armbrust, E. V. Diel transcriptional oscillations of light-sensitive regulatory elements in open-ocean eukaryotic plankton communities. PNAS, 118(6).
  13. 2019
    Durham, B. P., Boysen, A. K., Carlson, L. T., Groussman, R. D., Heal, K. R., Cain, K. R., … & Armbrust, E. V. Sulfonate-based networks between eukaryotic phytoplankton and heterotrophic bacteria in the surface ocean. Nature Microbiology, 4(10), 1706–1715.
  14. 2018
    Becker, K. W., Collins, J. R., Durham, B. P., Groussman, R. D., White, A. E., Fredricks, H. F., … & Van Mooy, B. A. S. Daily changes in phytoplankton lipidomes reveal mechanisms of energy storage in the open ocean. Nature Communications, 9(1).
  15. 2015
    Groussman, R. D., Parker, M. S., & Armbrust, E. V. Diversity and evolutionary history of iron metabolism genes in diatoms. PLoS ONE, 10(6), e0129081.
  16. 2015
    Hennon, G. M., Ashworth, J., Groussman, R. D., Berthiaume, C., Morales, R. L., Baliga, N. S., … & Armbrust, E. V. Diatom acclimation to elevated CO2 via cAMP signalling and coordinated gene expression. Nature Climate Change, 5(8), 761–765.
05 / In the news

Research beyond the journal.

Phys.org
02 June 2025

Iron from coal and steel industries alters North Pacific ecosystem.

University of Hawaiʻi at Mānoa coverage of our collaborative study on industrial iron inputs and the spring phytoplankton bloom in the North Pacific transition zone.

06 / Across domains

Ecological thinking.
Computational practice.

My scientific work asks how organisms respond to changing resources, interact with one another, and shape their environments. Making those relationships visible requires careful reference data, reproducible methods, and attention to what a measurement can—and cannot—tell us.

I carry that practice into independent work on human–AI collaboration: preserving context, tracing contributions, and studying how shared information is organized and interpreted. These projects extend my research questions into new settings, with their own methods and evidence to develop.

foxcoded

Technical consulting, computational infrastructure, and practical work across disciplinary boundaries.

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Strange Anchor

A collaborative worldbuilding and research environment exploring narrative, continuity, and coordination between human and machine contributors.

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07 / Collaborate

Let’s make complex
data useful.

Available for research collaboration and fractional consulting in bioinformatics, computational biology, and interdisciplinary technical work.

mora@foxcoded.xyz
  • Bioinformatics pipeline development & troubleshooting
  • Reference-data curation & annotation
  • Reproducible research workflows
  • Interdisciplinary translation & AI implementation