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- Mary Zeller
Dr. Mary Zeller |
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Postdocs |
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Group: |
Organic Geochemistry |
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Phone: |
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Fax: |
+49 421 218-00000 |
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Email: |
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Room: |
MARUM I, 2710 |
Ocean Floor Cluster
"Biogeochemical cycling of carbonate-associated organic matter"
Particulate inorganic carbon (PIC, or calcium carbonate) buried in marine sediments has been a major regulator of atmospheric CO2 over geologic time scales, as its dissolution consumes CO2. Additionally, it is estimated that up to 80% of the particulate organic carbon (POC) flux to the open ocean floor is done through association with calcium carbonate as mineral ballast. As POC is a defined term based on the ability of a particle to be collected on a filter, POC directly associated with carbonates could include relatively small molecules and represent a “dissolvable” organic carbon pool. This postdoctoral position will explore the biogeochemical implications of this interaction, in particular in the study of carbonate-associated organic matter, with a focus on its molecular characterization and reactivity. I am interested in 1) Characterizing what organic matter associates with carbonates formed in different ways, as, for example, potential differences may exist between foraminifera- or seep carbonate- associated organic matter, 2) Its potential for either alteration or shielding during early diagenesis and ultimately 3) As buried PIC dissolves in a future with increased atmospheric CO2, what are the potential consequences of PIC dissolution for carbonate-associated organic matter?
Research Interests
- Benthic Biogeochemistry
- Organic Geochemistry
- Inorganic Geochemistry
- Stable Isotope Biogeochemistry
Education and Work Experience
| 2023 - Present |
Postdoc - MARUM, University of Bremen - Ocean Floor Cluster Biogeochemistry of carbonate-associated organic matter |
| 2020 - 2022 |
Postdoc - Leibniz Institute for Baltic Sea Research (IOW) - Marine Geology Impact of bottom contact fishing on benthic biogeochemistry |
| 2018 - 2019 |
Postdoc - Florida International University - Department of Biology Dissolved organic matter cycling in the Everglades and Florida Bay |
| 2017 - 2018 |
Researcher - University of North Carolina - Marine Science Internal nutrient cycling into a eutrophic reservoir under different redox conditions |
| 2011 - 2016 |
PhD - University of North Carolina - Department of Chemistry Synthetic organic chemistry and photoredox catalysis |
Publications
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Rooze, J., Zeller, M. A., Gogina, M., Roeser, P., Kallmeyer, J., Schónke, M., Radtke, H., Böttcher, M. E. (2023), Bottom-trawling signals lost in sediment: A combined biogeochemical and modeling approach to early diagenesis in a perturbed coastal area of the southern Baltic Sea. Science of the Total Environment. DOI: 10.1016/j.scitotenv.2023.167551 |
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Van Dam, B. R., Lehmann, N., Zeller, M. A., Neumann, A., Pröfrock, D., Lipka, M., Thomas, H., Böttcher, M. (2022), Benthic Alkalinity fluxes from coastal sediments of the Baltic and North Seas: Comparing approaches and identifying knowledge gaps. Biogeosciences. DOI: 10.5194/bg-19-3775-2022 |
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Van Dam, B. R., Zeller, M. A., Lopes, C., Smyth, A., Böttcher, M., Osburn, C., Zimmerman, T., Pröfrock, D., Fourqurean, J., Thomas, H. (2021), Calcification-driven CO2 emissions exceed “Blue Carbon” sequestration in a carbonate seagrass meadow. Science Advances. DOI: 10.1126/sciadv.abj1372 |
| Van Dam, B. R., Lopes, C., Zeller, M. A., Ribas-Ribas, M., Wang, H., Thomas, H. (2021), Overstated Potential for Seagrass Meadows to Mitigate Coastal Ocean Acidification. Frontiers in Marine Science. DOI: 10.3389/fmars.2021.729992 |
| Von Ahn, C. M. E., Scholten, J. C., Malik, C., Feldens, P., Liu, B., Dellwig, O., Jenner, A-K., Papenmeier, S., Schmiedinger, I., Zeller, M. A., Böttcher, M. E. (2021), A Multi-Tracer Study of Fresh Water Sources for a Temparate Urbanized Coastal Bay (Southern Baltic Sea). Frontiers in Environmental Science. DOI: 10.3389/fenvs.2021.642346 |
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Zeller, M. A., Alperin, M. J. (2021), The efficacy of Phoslock® in reducing internal phosphate loading varies with bottom water oxygenation. Water Research X. DOI: 10.1016/j.wroa.2021.100095 |
| Zeller, M. A., Van Dam, B. R., Lopes, C., Kominoski, J. S. (2020), Carbonate-associated organic matter is a putative FDOM source in a subtropical seagrass meadow. Frontiers in Marine Science. DOI: 10.3389/fmars.2020.580284 |
| Griffin, J. D., Zeller, M. A., Nicewicz, D. A. (2015), Hydrodecarboxylation of Carboxylic and Malonic Acid Derivatives via Organic Photoredox Catalysis: Substrate Scope and Mechanistic Insight. Journal of the American Chemical Society. DOI:10.1021/jacs.5b07770 |
| Zeller, M. A., Riener, M., Nicewicz, D. A. (2014), Butyrolactone Synthesis via Polar Radical Crossover Cycloaddition Reactions: Diastereoselective Synthesis of Methylenolactocin and Protolichesterinic Acid. Organic Letters. DOI:10.1021/ol5022993 |
| Anderson, C. A., Taylor, P. G., Zeller, M. A., Zimmerman, S. C. (2010), Room Temperature, Copper-Catalyzed Amination of Bromonaphthyridines with Aqueous Ammonia. Journal of Organic Chemistry. DOI:10.1021/jo.100476x |