Publications
*graduate student author, ¶undergraduate student author, link to my cv on the Home page, google scholar link
- *Freimuth, E.J., Diefendorf, A.F., Lowell, T.V., ¶Schartman, A., Landis, J.D., Stewart, A.K., and *Bates, B.R., (accepted). Centennial-scale age offsets of plant wax n-alkanes in Adirondack lake sediments. Geochimica et Cosmochimica Acta.
- Diefendorf, A.F., Bickford, C.P., *Schlanser, K.M., *Freimuth, E.J., *Hannon, J.S., Grossiord, C., and McDowell, N.G., (in press). Plant wax and carbon isotope response to heat and drought in the conifer Juniperus monosperma. Organic Geochemistry. doi.org/10.1016/j.orggeochem.2021.104197
- *Mosher, S.G., Crowley, B.E., Yanes, Y., Diefendorf, A.F., Barone, R., 2020. Spatial variability in foliar carbon and nitrogen values on Tenerife reflects both climate and soils: Establishing an isotopic framework for future work. Acta Oecologia. doi.org/10.1016/j.actao.2020.103647
- *Corcoran, M.C., Diefendorf, A.F., Lowell, T.V., *Freimuth, E.J., ¶Schartman, A., *Bates, B., Stewart, A.K., and Bird, B.W., 2020. Hydrogen isotopic composition (δ2H) of diatom-derived C20 highly branched isoprenoids from lake sediments track lake water δ2H. Organic Geochemistry. doi.org/10.1016/j.orggeochem.2020.104122
- *Suh, Y.J. and Diefendorf, A.F., 2020. Effects of drying methods on plant lipid compounds and bulk isotopic compositions. Rapid Communications in Mass Spectrometry 34, e8900. doi.org/ 10.1002/rcm.8900
- *Schlanser, K., Diefendorf, A.F., *West, C.K., Greenwood, D.R., Basinger, J.F., Meyer, H.W., *Lowe, A.J., and ¶Naake, H., 2020. Conifers are a major source of sedimentary leaf wax n-alkanes when dominant in the landscape: Case studies from the Paleogene. Organic Geochemistry 147. doi.org/10.1016/j.orggeochem.2020.104069
- ¶Schartman, A.K., Diefendorf, A.F., Lowell, T.V., *Freimuth, E.J., Stewart, A.K., Landis, J.D., and *Bates, B.R., 2020. Stable source of Holocene spring precipitation recorded in leaf wax hydrogen isotope-ratios from two New York lakes. Quaternary Science Reviews 240. doi.org/10.1016/j.quascirev.2020.106357
- *Schlanser, K., Diefendorf, A.F., Greenwood, D.R., Mueller, K.E., *West, C.K., *Lowe, A.J., Basinger, J.F., Currano, E.D., *Flynn, A.G., Fricke, H.C., ¶Geng, J., Meyer, H.W., and Peppe, D.J., 2020. On geologic timescales, plant carbon isotope fractionation responds to precipitation and similarly to modern plants and has a small negative correlation with pCO2. Geochimica et Cosmochimica Acta 270, 264-281. doi.org/10.1016/j.gca.2019.11.023
- *Suh, Y.J. Diefendorf, A.F., Freimuth, E.J., and Hyun, S., 2020. Last interglacial (MIS 5e) and Holocene paleohydrology and paleovegetation of the midcontinental North America from Gulf of Mexico sediments. Quaternary Science Reviews. doi.org/10.1016/j.quascirev.2019.106066
- *Freimuth, E.J., Diefendorf, A.F., Lowell, T.V., *Bates, B., ¶Schartman, A. Bird, B.W., Landis, J.D., and Stewart, A.K., 2020. Contrasting sensitivity of lake sediment n-alkanoic acids and n-alkanes to basin-scale vegetation and regional-scale precipitation δ2H in the Adirondack Mountains, NY (USA). Geochimica et Cosmochimica Acta 268, 22-41.doi.org/10.1016/j.gca.2019.08.026
- *Suh, Y.J., Diefendorf, A.F., and Bowen, G.J., 2019. Leaf wax integration and transport from the Mississippi River Basin to the Gulf of Mexico inferred from GIS enabled isoscapes and mixing models. Geochimica et Cosmochimica Acta 257, 131-149. doi.org/10.1016/j.gca.2019.04.022
- *Wise, J.L., Van Horn, D.J., Diefendorf, A.F., Regier, P.J., Lowell, T.V., and Dahm, C.N., 2019. Dissolved organic matter dynamics in storm water runoff in a dryland urban region. Journal of Arid Environments 165, 55-63.doi.org/10.1016/j.jaridenv.2019.03.003
- *Freimuth, E.J., Diefendorf, A.F., Lowell, T.V., and Wiles, G., 2019. Sedimentary n-alkanes and n-alkanoic acids in a temperate bog are biased toward woody plant waxes biased toward plants. Organic Geochemistry 128, 94-107.doi.org/10.1016/j.orggeochem.2019.01.006
- Diefendorf, A.F., Leslie, A.B., and Wing, S.L., 2019. A phylogenetic analysis of conifer diterpenoids and their carbon isotopes for chemotaxonomic applications. Organic Geochemistry 127, 50-58. doi.org/10.1016/j.orggeochem.2018.11.007
- Bird, M.I., Brand, M., Diefendorf, A.F., Haig, J.L., Hutley, L.B., Levchenko, V., Ridd, P.V., Rowe, C., Whinney, J., Wurster, C.M., Zwart, C., 2019. Identifying the ‘savanna’ signature in lacustrine sediments in northern Australia. Quaternary Science Reviews 203, 233-247. doi.org/10.1016/j.quascirev.2018.11.002
- *Arnold, T.E., Diefendorf, A.F., Brenner, M., Freeman, K.H., and Baczynski, A.A., 2018. Subtropical climate response to Heinrich Events in the North Atlantic. Quaternary Science Reviews 194, 1-11. DOI: 10.1016/j.quascirev.2018.06.012
- Vrazo, M.B., Diefendorf, A.F., Crowley, B.E., and Brett, C.E., 2018. Late Cretaceous marine arthropods relied on terrestrial organic matter as a food source: evidence from the Coon Creek Lagerstätte in the Mississippian Embayment. Geobiology 2018, 1-19. DOI: 10.111/gbi.12270
- *Suh, Y.J., and Diefendorf, A.F., 2018. Seasonal and canopy height variation in n-alkanes and their carbon isotopes in a temperate forest. Organic Geochemistry 116, 23-34. DOI: 10.1016/j.orggeochem.2017.10.015
- Date, P., *Crowley-Gill, A., Diefendorf, A.F., Rollmann, S.M, 2017. Population differences in host plant preference and the importance of yeast and plant substrate to volatile composition. Ecology and Evolution. DOI: 10.1002/ece3.2993
- *Freimuth, E.J., Diefendorf, A.F., and Lowell, T.V. 2017. Hydrogen isotopes of n-alkanes and n-alkanoic acids as tracers of precipitation in a temperate forest and implications for paleorecords. Geochimica et Cosmochimica Acta 206, 166-183. DOI: 10.1016/j.gca.2017.02.027
- Diefendorf, A.F. and *Freimuth, E.J., 2017. Extracting the most from terrestrial plant-derived n-alkyl lipids and their carbon isotopes from the sedimentary record: A review. Organic Geochemistry. DOI: 10.1016/j.orggeochem.2016.10.016.
- Diefendorf, A.F., ¶Sberna, D., and Taylor, D.W., 2015. Effect of thermal maturation on plant-derived terpenoids and leaf wax n-alkyl components. Organic Geochemistry 89, 61-70. DOI: 10.1016/j.orggeochem.2015.10.006.
- *Kallenbach, C.M., Grandy, A.S., Frey, S.D., and Diefendorf, A.F., 2015. Microbial physiology and necromass regulate agricultural soil carbon accumulation. Soil Biology and Biochemistry 91, 279-290. DOI:10.1016/j.soilbio.2015.09.005.
- Diefendorf, A.F., Wing, S.L., and Leslie, A., 2015. Leaf wax composition and carbon isotopes vary among conifer groups. Geochimica et Cosmochimica Acta 170, 145-156. DOI: 10.1016/j.gca.2015.08.018.
- Diefendorf, A.F., Freeman, K.H., Wing, S.L., Currano, E.D., and Mueller, K.E., 2015. Paleogene plants fractionated carbon isotopes similar to modern plants. Earth and Planetary Science Letters 429, 33-44. DOI: 10.1016/j.epsl.2015.07.029
- Giri, S.J., Diefendorf, A.F., and Lowell, T.V., 2015. Origins and sedimentary fate of plant-derived terpenoids in a small river catchment and implications for terpenoids as quantitative paleovegetation proxies. Organic Geochemistry 82, 22-32. DOI: 10.1016/j.orggeochem.2015.02.002.
- Diefendorf, A.F., Freeman, K.H., Wing, S.L., 2014. A comparison of terpenoid and leaf fossil vegetation proxies in Paleocene and Eocene Bighorn Basin sediments. Organic Geochemistry 71, 30-42. DOI:10.1016/j.orggeochem.2014.04.004.
- Marin-Spiotta, E., *Chaopricha, N.T., Plante, A., Diefendorf, A.F., Muller, C.W., Grandy, S., Mason, J.A., 2014. Rapid climate change leads to stabilization of soil carbon by fire and burial. Nature Geoscience 7, 428-432. DOI:10.1038/ngeo2169
- Clyde, W.C., Gingerich, P.D., Wing, S.L., Röhl, U., Westerhold, T., Bowen, G., Johnson, K., *Baczynski, A.A., Diefendorf, A.F., McInerney, F., Schnurrenberger, D., Noren, A., *Brady, K., and the BBCP Science Team, 2013. Bighorn Basin Coring Project (BBCP): a continental perspective on early Paleogene hyperthermals. Scientific Drilling, 16, 21–31. DOI: 10.5194/sd-16-21-2013.
- *Close, H.G., Shah, S.R., Ingalls, A.E., Diefendorf, A.F., Brodie, E.L., Hansman, R.L., Freeman, K.H., Aluwihare, L.I., Pearson, A., 2013. Export of submicron particulate organic matter to mesopelagic depths in an oligotrophic gyre. Proceedings of the National Academy of Sciences 110, 12565-12570. DOI: 10.1073/pnas.1217514110
- Diefendorf, A.F., Freeman, K.H., Wing, S.L., 2012. Distribution and carbon isotope patterns of diterpenoids and triterpenoids in modern temperate C3 trees and their geochemical significance. Geochimica et Cosmochimica Acta 85, 342-356. DOI: 10.1016/j.gca.2012.02.016
- *Cui, Y., Kump, L.R., Ridgwell, A.J., Charles, A.J., Junium, C.K., Diefendorf, A.F., Freeman, K.H., Urban, N.M., Harding, I.C., 2012. Reply to 'Constraints on hyperthermals'. Nature Geoscience 5, 231-232. DOI: 10.1038/ngeo1424
- Diefendorf, A.F., Freeman, K.H., Wing, S.L., Graham, H.V., 2011. Production of n-alkyl lipids in living plants and implications for the geologic past. Geochimica et Cosmochimica Acta 75, 7472-7485. DOI: 10.1016/j.gca.2011.09.028
- Freeman, K.H., Mueller, K.E., Diefendorf, A.F., Wing, S.L., Koch, P.L., 2011. Clarifying the influence of water availability and plant types on carbon isotope discrimination by C3 plants. Proceedings of the National Academy of Sciences 108, E59-E60. DOI: 10.1073/pnas.1102556108
- Cui, Y., Kump, L.R., Ridgwell, A.J., Charles, A.J., Junium, C.K., Diefendorf, A.F., Freeman, K.H., Urban, N.M., Harding, I.C., 2011. Slow release of fossil carbon during the Palaeocene-Eocene Thermal Maximum. Nature Geoscience 4, 481-485. DOI: 10.1038/ngeo1179
- Mueller, K.E., Diefendorf, A.F., Freeman, K.H., Eissenstat, D.M., 2010. Appraising the roles of nutrient availability, global change, and functional traits during the angiosperm rise to dominance. Ecology Letters 13, E1-E6. DOI: 10.1111/j.1461-0248.2010.01455.x
- Diefendorf, A.F., Mueller, K.E., Wing, S.L., Koch, P.L., Freeman, K.H., 2010. Global patterns in leaf 13C discrimination and implications for studies of past and future climate. Proceedings of the National Academy of Sciences 107, 5738-5743. DOI: 10.1073/pnas.0910513107
- Schouten, S., Hopmans, E.C., van der Meer, J., Mets, A., Bard, E., Bianchi, T.S., Diefendorf, A., Escala, M., Freeman, K.H., Furukawa, Y., Huguet, C., Ingalls, A., Menot-Combes, G., Nederbragt, A.J., Oba, M., Pearson, A., Pearson, E.J., Rosell-Mele, A., Schaeffer, P., Shah, S.R., Shanahan, T.M., Smith, R.W., Smittenberg, R., Talbot, H.M., Uchida, M., Van Mooy, B.A.S., Yamamoto, M., Zhang, Z.H., Damste, J.S.S., 2009. An interlaboratory study of TEX86 and BIT analysis using high-performance liquid chromatography-mass spectrometry. Geochemistry Geophysics Geosystems 10, 13. DOI: 10.1029/2008GC002221
- Wing, S.L., Bloch, J.I., Bowen, G.J., Boyer, D.M., Chester, S., Diefendorf, A.F., Harrington, G.J., Kraus, M.J., Secord, R., Smith, F.A., 2009. Coordinated sedimentary and biotic change during the Paleocene-Eocene Thermal Maximum in the Bighorn Basin, Wyoming, USA, in: Crouch, E.M., Strong, C.P., Hollis, C.J. (Eds.), Climatic and Biotic Events of the Paleogene (CBEP 2009), extended abstracts from an international conference in Wellington, New Zealand, 12-15 January 2009. GNS Science Miscellaneous Series 18, pp. 156-162.
- Diefendorf, A.F., Patterson, W.P., Holmden, C., Mullins, H.T., 2008. Carbon isotopes of marl and lake sediment organic matter reflect terrestrial landscape change during the late Glacial and early Holocene (16,800 to 5,540 cal yr BP): a multiproxy study of lacustrine sediments at Lough Inchiquin, western Ireland. Journal of Paleolimnology 39, 101-115. DOI: 10.1007/s10933-007-9099-9
- Tibert, N.E., Patterson, W.P., Diefendorf, A.F., Martini, A., Stanton, C., 2007. Holocene temperature variability in western Ireland: Evidence from limnic ostracode assemblages and stable isotope values. Stratigraphy 4, 353-361.
- Diefendorf, A.F., Patterson, W.P., Mullins, H.T., Tibert, N., Martini, A., 2006. Evidence for high-frequency late Glacial to mid-Holocene (16,800 to 5500 cal yr B.P.) climate variability from oxygen isotope values of Lough Inchiquin, Ireland. Quaternary Research 65, 78-86. DOI: 10.1016/j.yqres.2005.08.001
- Diefendorf, A.F., Patterson, W.P., 2005. Survey of stable isotope values in Irish surface waters. Journal of Paleolimnology 34, 257-269. DOI: 10.1007/s10933-005-3571-1