Victoria Orphan

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Victoria Orphan
Alma materUniversity of California, Santa Barbara
Known forGeobiologist
Awards
  • American Association of Arts and Science
  • MacArthur Fellowship
  • Gordon and Betty Moore Foundation Investigator Award
  • DOE Early Career Research Award
  • National Research Council Fellowship
Scientific career
FieldsGeobiology
InstitutionsCalifornia Institute of Technology

Victoria J. Orphan is a geobiologist at the California Institute of Technology who studies the interactions between marine microorganisms and their environment.[1][2] As of 2020, she is the Chair for the Center of Environmental Microbial Interactions.

Early life and education

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Victoria Orphan received her B.A. in Aquatic Biology (1994) and Ph.D. in Ecology, Evolution and Marine Biology (2001) from the University of California, Santa Barbara.[3] She served as a National Research Council fellow at the NASA Ames Research Center (2002–2004) before joining the Geobiology faculty at California Institute of Technology.[4]

Career

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Orphan is the James Irvine Professor of Environmental Science and Geobiology at the California Institute of Technology.[5] She has also been an adjunct scientist at Monterey Bay Aquarium Research Institute (MBARI) since 2009[6] and Senior Scientist of the Center for Dark Energy Biosphere Investigations, a Science and Technology Center funded by the National Science Foundation and headquartered at the University of Southern California.[7] As of 2020, she is the Alan V.C. Davis and Lenabelle Davis Leadership Chair for the Center of Environmental Microbial Interactions.[8][9] In 2023 she was named LGBTQ+ Scientist of the Year by Out to Innovate, a global organization of LGBTQ+ students and professionals in STEM.[10] She is the director of Caltech's Kerckhoff Marine Laboratory as well as the Center for Environmental Microbial Interactions (CEMI).[11]

Research

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Orphan's research integrates molecular, microscopy, and geochemical techniques to improve understanding of various processes, including those that serve as the primary sink for the greenhouse gas methane in the ocean.[12] She focuses on microbially-mediated anaerobic oxidation of methane (AOM) in deep sea sediment.[13] Specifically, she looks at the relationships between two groups of marine microbes: archaea and bacteria. Orphan uses tools such as nanoSIMS to visualize these organisms at the microscale and track how and when they exchange energy.[14] Through her research, Orphan has helped develop novel stable isotope applications that provide insight into the relationship between microbes and large-scale geochemical processes.[15]

Orphan appeared in the 2018 Netflix documentary The Most Unknown[16] on scientific research directed by Ian Cheney.

Personal life

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Orphan is in a relationship with fellow scientist Shana K. Goffredi, who teaches biology at Occidental College and also studies deep-sea ecosystems.[17][18]

Honors and awards

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Selected publications

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Orphan, V., Hinrichs, K.-U., Ussler, W., Paull, C.K., Taylor, L., Sylva, S.P., Hayes, J.M. and DeLong, E., 2001. Comparative analysis of methane-oxidizing archaea and sulfatereducing bacteria in anoxic marine sediments. Applied and Environmental Microbiology, 67(4): 1922-1934.

Orphan, V.J., House, C.H., Hinrichs, K.-U., McKeegan, K.D. and DeLong, E.F., 2001. Methane-consuming archaea revealed by directly coupled isotopic and phylogenetic analysis. Science, 293(5529): 484-487.

Orphan, V.J., House, C.H., Hinrichs, K.-U., McKeegan, K.D. and DeLong, E.F., 2002. Multiple archaeal groups mediate methane oxidation in anoxic cold seep sediments. Proceedings of the National Academy of Sciences, 99(11): 7663-7668.

Orphan, V., Goffredi, S., Delong, E. and Boles, J., 2003. Geochemical influence on diversity and microbial processes in high temperature oil reservoirs. Geomicrobiology Journal, 20(4): 295-311.

Orphan, V., Ussler III, W., Naehr, T., House, C., Hinrichs, K.-U. and Paull, C., 2004. Geological, geochemical, and microbiological heterogeneity of the seafloor around methane vents in the Eel River Basin, offshore California. Chemical Geology, 205(3): 265- 289.

Orphan, V., Jahnke, L., Embaye, T., Turk, K., Pernthaler, A., Summons, R. and Des Marais, D., 2008. Characterization and spatial distribution of methanogens and methanogenic biosignatures in hypersaline microbial mats of Baja California. Geobiology, 6(4): 376-393.

Orphan, V. and House, C., 2009. Geobiological investigations using secondary ion mass spectrometry: microanalysis of extant and paleo-microbial processes. Geobiology, 7(3): 360-372.

Orphan, V.J., 2011. Getting cozy: hidden microbial interactions in nature. Environmental Microbiology Reports, 3(1): 16-18.

Orphan, V.J. and Hoehler, T.M., 2011. Microbiology: Hydrogen for dinner. Nature, 476(7359): 154-155.

Cavicchioli, R., Ripple, W. J., Timmis, K. N., Azam, F., Bakken, L. R., Baylis, M., ... V. Orphan… & Crowther, T. W. (2019). Scientists’ warning to humanity: microorganisms and climate change. Nature Reviews Microbiology, 17: 569-586.

Leu, A.O., Cai, C., McIlroy, S.J., Southam, G., Orphan, V.J., Yuan, Z., Hu, S. and Tyson, G.W., 2020. Anaerobic methane oxidation coupled to manganese reduction by members of the Methanoperedenaceae. The ISME journal, 14(4), pp.1030-1041.

References

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