Dataset: MPn-derived methane production by epiphytic bacteria on pelagic Sargassum seaweed from 2017-2019 (Cyanobacteria Hydrocarbons project)

Final no updates expectedDOI: 10.26008/1912/bco-dmo.911212.1Version 1 (2023-10-10)Dataset Type:experimental

Principal Investigator: David L. Valentine (University of California-Santa Barbara)

Scientist: Rachel J. Parsons (Bermuda Institute of Ocean Sciences)

Scientist: Benjamin A.S. Van Mooy (Woods Hole Oceanographic Institution)

Student, Contact: Danielle D. Cox (University of California-Santa Barbara)

BCO-DMO Data Manager: Sawyer Newman (Woods Hole Oceanographic Institution)


Project: Redox Cycling of Phosphorus in the Western North Atlantic Ocean (Phosphorus Redox Cycling)

Project: Collaborative Research: Do Cyanobacteria Drive Marine Hydrocarbon Biogeochemistry? (Cyanobacteria Hydrocarbons)

Project: Fall Semester Student Research in Oceanography and Marine Science at BIOS (Fall Student Research at BIOS)


Abstract

The essential nutrient phosphorus is biologically scarce in the Sargasso Sea, yet the pelagic macroalgae Sargassum, for which this area of the North Atlantic Ocean is named, thrives. We tested the hypothesis that Sargassum holobionts utilize methylphosphonate (MPn) as an alternative source of phosphorus via bottle incubations, finding lysis liberated phosphonate-derived methane. The resulting data of methane production relative to various control conditions in the bottle system over time was use...

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All samples reported collected via various small boat operations and scientific divers from UCSB (2017 trials) or BIOS (2018-2019 trials).


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Results

Cox, D. D., Parsons, R. J., Van Mooy, B. A, S., & Valentine, D. L., (Accepted). Methylphosphonate is Utilized by Commensal Microbiota of Macroalgae in the Oligotrophic Sargasso Sea. Journal of Geophysical Research - Oceans. DOI: 10.1029/2023JC020315
Methods

Cavender-Bares, K. K., Karl, D. M., & Chisholm, S. W. (2001). Nutrient gradients in the western North Atlantic Ocean: Relationship to microbial community structure and comparison to patterns in the Pacific Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 48(11), 2373–2395. doi:10.1016/s0967-0637(01)00027-9
Methods

Cañellas, M., Agustí, S., & Duarte, C. (2000). Latitudinal variability in phosphate uptake in the Central Atlantic. Marine Ecology Progress Series, 194, 283–294. https://doi.org/10.3354/meps194283
Methods

Kolowith, L. C., Ingall, E. D., & Benner, R. (2001). Composition and cycling of marine organic phosphorus. Limnology and Oceanography, 46(2), 309–320. Portico. https://doi.org/10.4319/lo.2001.46.2.0309
Methods

Lomas, M. W., Burke, A. L., Lomas, D. A., Bell, D. W., Shen, C., Dyhrman, S. T., & Ammerman, J. W. (2009). Sargasso Sea phosphorus biogeochemistry: an important role for dissolved organic phosphorus (DOP). https://doi.org/10.5194/bgd-6-10137-2009