Author

J. R. Graff

Listed by name: these papers carry no ORCID for this author, so different people with the same name may be mixed together.

Biology Disciplines

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Ecology· 3 Microbiology· 2

Signature Assays, Organisms & Methods

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Approach:experimental assay· 4 Assay:metagenomics· 4 Research Focus:ecology & biodiversity· 2 Organism:bacteria (other)· 1 Research Focus:benchmarking· 1 Research Focus:cell type annotation· 1 Assay:DNA methylation· 1 Assay:flow cytometry· 1

Frequent Co-Authors

A. Marchetti· 3 shared M. G. Meyer· 3 shared S. M. Gifford· 3 shared A. E. Santoro· 2 shared C. A. Carlson· 2 shared D. A. Siegel· 2 shared G. C. Sharpe· 2 shared K. N. Buck· 2 shared

Activity by Year

2021-2023 · peak 3/yr

Co-Author Collaboration Network

10 top collaborators · 36 mutual co-author links

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3 shared papersEcology

A. Marchetti

Mutual co-authors in cluster

Author profile →

5 papers

Recent·Most cited

Toward a synthesis of phytoplankton community composition methods for global-scale application

S. J. Kramer, L. M. Bolanos, D. Catlett, A. P. Chase, M. J. Behrenfeld, E. S. Boss, E. T. Crockford, S. J. Giovannoni, J. R. Graff, N. Haëntjens, L. Karp-Boss, E. E. Peacock, C. S. Roesler, H. M. Sosik, D. A. Siegel

The paper compares methods for determining phytoplankton community composition, finding strong correlations for some taxa but not others, and highlights implications for ocean color remote sensing.

bioRxiv · Sep 7, 2023Ecology

Microbial Respiration in Contrasting Ocean Provinces via High-Frequency Optical Assays

M. R. Cohn, B. Stephens, M. G. Meyer, G. C. Sharpe, A. K. Niebergall, J. R. Graff, N. Cassar, A. Marchetti, C. A. Carlson, S. M. Gifford

This study measures microbial respiration rates in different ocean regions using optical sensors, finding higher carbon export potential in the Atlantic compared to the Pacific.

bioRxiv · Jul 20, 2023Microbiology

Quantitative analysis of food web dynamics in a low export ecosystem

H. M. McNair, M. G. Meyer, S. J. Lerch, A. E. Maas, B. M. Stephens, J. Fox, K. N. Buck, S. M. Burns, I. Cetinic, M. R. Cohn, C. Durkin, S. M. Gifford, W. Gong, J. R. Graff, B. Jenkins, , T. A. Rynearson

The paper quantifies food web dynamics in a low export ecosystem, finding microbial recycling dominates carbon flow with minimal export due to slow turnover and high detrital background.

bioRxiv · Mar 17, 2023 · PreprintEcology

Synechococcus nitrogen gene loss in iron-limited ocean regions

G. C. Sharpe, M. G. Meyer, W. Gong, S. M. Burns, A. Tagliabue, K. N. Buck, A. E. Santoro, J. R. Graff, A. Marchetti, S. M. Gifford

This study identifies two Synechococcus genomes from an iron-limited region that lack nitrate and nitrite assimilation genes, suggesting reliance on recycled nitrogen forms.

bioRxiv · May 24, 2022 · PreprintEcology

SAR11 Cells Rely on Enzyme Multifunctionality to Transport and Metabolize a Range of Polyamine Compounds

S. E. Noell, G. E. Barrell, C. Suffridge, J. T. Morre, K. P. Gable, J. R. Graff, B. J. VerWey, F. L. Hellweger, S. J. Giovannoni

The paper shows SAR11 bacteria transport and metabolize multiple polyamines using multifunctional enzymes, supporting the hypothesis that enzyme versatility enables streamlined genomes to utilize a wide range of dissolved organic matter.

bioRxiv · May 13, 2021Microbiology