Princeton University, Geosciences Department
Simons Foundation Postdoctoral Fellow in Marine Microbial Ecology
amaloney (at princeton dot edu)
RESEARCH
In order to survive in relentlessly dynamic environments, cells have the fascinating capacity to alter the quantity, form, and isotope composition of their biomolecules. I am interested in how microorganisms, metabolisms, molecules, and stable isotope ratios respond to environmental change. Using microbiology and isotope geochemistry in controlled laboratory settings and field observations, I am developing tools to help characterize microbial metabolisms in modern and past environments.
RECENT ACTIVITY
May 2022: Visit the lab of Dr. Katie Snell to measure δ13C and δ18O of carbonates
August 2021: Chesapeake Bay cruise with Ward Lab for mixotrophy incubations
Summer 2021: Back to Kopf Lab for δ2H measurements with the help of Dr. Jamie McFarlin
Spring 2021 and 2022: Dr. Kay Bidle and grad student Ben Diaz at Rutgers help me look into the EHUX virus
Fall 2020: Awarded Simons Marine Microbial Ecology Postdoctoral Fellowship
Fall-Winter 2019: Build chemostats and grow yeast in Xinning Zhang's lab
Summer 2019: Host Princeton Environmental Institute undergraduate intern Louison Sall, extracting lipids and growing microbes
June 2019: Join the NSF UNOLS Early Career Chief Scientist Training program at station ALOHA with other talented early career scientists
Summer 2018: Visit the lab of Dr. Sebastian Kopf at CU Boulder to build and grow chemostats
March-April 2018: Join Dr. Bess Ward and team to collect suspended particles throughout the ETNP Oxygen Minimum Zone
Early 2018: Finish PhD with Dr. Julian Sachs, move across the country, and join the lab of Dr. Xinning Zhang as a Harry Hess Postdoctoral Fellow
March 2017 & Feb 2018: Visitor to the lab of Dr. Julie Richey at USGS St. Petersburg, foraminifera metal & δ18O measurements
EDUCATION
2018, Ph.D., University of Washington, WA Oceanography
2013, M.S., University of Washington, WA Oceanography
2013, Climate Change Certificate, University of Washington, WA
2005, B.S. & M.S., Stanford University, CA Earth Systems
PUBLICATIONS (Google Scholar)
13. Maloney, A.E., Richey, J.N., Nelson, D.B., Hing, S.N., Sear, D.A., Hassall, J.D., Langdon, P.G., Sichrowsky, U., Schabetsberger R., Malau A., Meyer J.-Y., Croudace, I.W., Sachs, J.P. (2022) Contrasting Common Era climate and hydrology sensitivities from paired lake sediment dinosterol hydrogen isotope records in the South Pacific Convergence Zone. Quaternary Science Reviews, 281, 107421. https://doi.org/10.1016/j.quascirev.2022.107421
-> data also available here: https://doi.pangaea.de/10.1594/PANGAEA.943589
12. Heal, K.R., Maloney, A.E., Ingalls, A.E., Bundy, R.M. (2021) Diverse arsenic-containing lipids in the surface ocean. Limnology and Oceanography Letters. https://aslopubs.onlinelibrary.wiley.com/doi/full/10.1002/lol2.10216 (NEWS)
11. Ladd, S.N., Maloney, A.E., Nelson, D.B., Prebble, M., Camperio, G., Sear, D.A., Hassall, J.D., Langdon, P.G., Sachs, J.P., Dubois, N. (2021) Leaf wax hydrogen isotopes as a hydroclimate proxy in the tropical Pacific. JGR Biogeosciences, 126, e2020JG005891. https://doi.org/10.1029/2020JG005891
10. Sear, D.A., Allen, M.S., Hassall, J.D., Maloney, A.E., Langdon, P.G., Morrison, A.E., Mackay, H., Henderson, A., Croudace, I.W., Clarke, C., Sachs, J.P., MacDonald, K., Chiverrell, R.C., Leng, M., Cisneros-Dozal, L.M., Fonville, T. (2020) Human settlement of East Polynesia earlier, incremental, and coincident with prolonged South Pacific drought. Proceedings of the National Academy of Sciences, 117, 8813 - 8819. www.pnas.org/cgi/doi/10.1073/pnas.1920975117
9. Maloney, A.E., Nelson, D.B., Richey, J.N., Prebble, M., Sear, D.A., Hassall, J.D., Langdon, P.G., Croudace, I.W., Zawadzki, A., Sachs, J.P. (2019) Reconstructing precipitation in the tropical South Pacific from dinosterol 2H/1H ratios in lake sediment. Geochimica et Cosmochimica Acta 245, 190–206. https://doi.org/10.1016/j.gca.2018.10.028
8. Sachs J.P., Stein R., Maloney A.E., Wolhowe M., Fahl K., Nam S. (2018) An Arctic Ocean paleosalinity proxy from d2H of palmitic acid provides evidence for deglacial Mackenzie River flood events. Quaternary Science Reviews 198, 76-90. https://doi.org/10.1016/j.quascirev.2018.08.025
7. Sachs J.P., Maloney A.E., Gregerson J. (2017) Effect of light on 2H/1H fractionation in lipids from continuous cultures of the diatom Thalassiosira pseudonana. Geochimica et Cosmochimica Acta 209, 204-215. http://dx.doi.org/10.1016/j.gca.2017.04.008
6. Maloney A.E., Shinneman A., Hemeon K., Sachs J.P. (2016) Exploring lipid 2H/1H fractionation mechanisms in response to salinity with continuous cultures of the diatom Thalassiosira pseudonana. Organic Geochemistry 101, 154-165. http://dx.doi.org/10.1016/j.orggeochem.2016.08.015
-> model also available here: https://zenodo.org/record/154117
5. Newsom E.R., Fassbender A.J., Maloney A.E., Bushinsky S. (2016) Increasing the usability of climate science in political decision-making. Elementa 4, 000127. 10.12952/journal.elementa.000127
4. Lyle M., Pockalny R.A., Polissar P.J., Lynch-Stieglitz J., Bova S., Dunlea A.G., Ford H.L., Hertzberg J.E., Hovan S.A., Jacobel A.W., Wertman C.A., Maloney A.E., Murry R.W., Wilson J., Wejnert K., Xie R. (2016) Dynamic carbonate sedimentation on the Northern Line Islands Ridge, Palmyra Basin. Marine Geology 379, 194-207. http://dx.doi.org/10.1016/j.margeo.2016.06.005
3. Sachs J.P., Maloney A.E., Gregerson J., Paschal C. (2016) Effect of salinity on 2H/1H fractionation in lipids from continuous cultures of the coccolithophorid Emiliania huxleyi. Geochimica et Cosmochimica Acta 189, 96-109. http://dx.doi.org/10.1016/j.gca.2016.05.041
2. Lynch-Stieglitz J., Polissar P.J., Jacobel A.W., Hovan S.A., Pockalny R.A., Lyle M., Murray R.W., Ravelo A.C., Bova S.C., Dunlea A.G., Ford H.L., Hertzberg J.E., Wertman C.A., Maloney A.E., Shackford J.K., Wejnert K., Xie R.C. (2015) Glacial-interglacial changes in central tropical Pacific surface seawater property gradients. Paleoceanography 30, 1–16. https://doi.org/10.1002/2014PA002746
1. Sichrowsky U., Schabetsberger R., Sonntag B., Stoyneva M., Maloney A.E., Nelson D.B., Richey J.N., Sachs J.P. (2014) Limnological Characterization of Volcanic Crater Lakes on Uvea Island (Wallis and Futuna, South Pacific). Pacific Science 68, 333–343. http://dx.doi.org/10.2984/68.3.3
