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Brooke E Crowley

Title: Associate Professor, Stable Isotope Ecology, Quaternary Paleoecology
Office: 503 Geology-Physics Building
Tel: 513-556-7181
Email: crowlebk@ucmail.uc.edu
Web: http://www.agoraphotia.com

I use stable isotope biogeochemistry to answer a variety of questions about modern and extinct mammal communities. My main research interests include extinction, environmental and ecological consequences of human impacts, habitat transformation and conservation.


  • Ph.D., UC Santa Cruz, 2009 (Ecology and Evolutionary Biology).
  • M.A., UC Santa Cruz, 2008 (Biological Anthropology).
  • M.S., UC Santa Cruz, 2005 (Earth Sciences).
  • B.A., Vassar College, 2002 (Geology).

Research Information

Research Support

  • (PI), Crowley, Brooke, Collaborative Research: Flooded caves and fossil lemur graveyards in southwestern Madagascar (UMASS is collaborator), National Science Foundation. (BCS-1749676), $24,706.00. 03-01-2018 to 02-28-2021. Status: Active.
  • (PI), Crowley, Brooke, Investigating Potential Heavy Metal Contamination in Soils, Plants and People, Oak Ridge Associated Universities. (ORAU 2013), $5,000.00. 06-01-2013 to 05-31-2014. Status: Awarded.
  • (PI), Crowley, Brooke, Assessing vehicle related pollution along the Manali-Leh Highway, Indian Himalaya, UC's University Research Council. (URC Faculty 2012-13), $6,500.00. 01-22-2013 to 01-21-2014. Status: Active.
  • (PI), Crowley, Brooke, Work for Others L10781, Lawrence Livermore National Laboratory. (L-10781), $.00. 12-19-2012 to 12-18-2017. Status: Active.
  • (Collaborator), Algeo, Thomas; Crowley, Brooke; Diefendorf, Aaron; Townsend-Small, Amy, Acquisition of Stable Isotope Instrumentation for Biogeochemistry Research and Teaching at the University of Cincinnati, National Science Foundation. (EAR-1229114), $400,000.00. 09-15-2012 to 08-31-2015. Status: Active.
  • (Collaborator), Algeo, Thomas; Crowley, Brooke; Diefendorf, Aaron; Townsend-Small, Amy, Acquisition of Stable Isotope Instrumentation for Biogeochemistry Research and Teaching at the University of Cincinnati, Ohio Board of Regents. (OBR 990), $85,714.00. 07-01-2012 to 06-30-2014. Status: Active.


Peer-reviewed Publications

  • Vrazo, M.B., Diefendorf, A.F., Crowley, B.E., Czaja, A.D. (2018). Late Cretaceous marine arthropods relied on terrestrial organic matter as a food source: geochemical evidence from the Coon Creek Lagerstätte in the Mississippian Embayment. Geobiology, 16, 160-178..
  • Crowley, B.E., Godfrey, L.R., Bankoff, R.J., Perry, G.H., Culleton, B.J., Kennett, D.J., Sutherland, M.R, Samonds, K.E., and Burney, D.A. (2017). Island-wide aridity did not trigger recent megafaunal extinctions in Madagascar. Ecography, 40, 901-912..
  • Muldoon, K.M., Godfrey, L.R., Crowley, B.E., and Simons, E.L. (2017). Prolemur simus: did predation contribute to the demise of this once widespread species?. International Journal of Primatology, 38 (1), 58-79..
  • Crowley BE, Miller JH, Bataille CP (2017). trontium isotopes (87Sr/86Sr) in terrestrial ecological and palaeoecological research: empirical efforts and recent advances in continental-scale models. Biological Reviews, 92, 43-59..
  • Godfrey, L.R., Crowley, B.E., Muldoon, K.M., Kelley, E.A., King, S.J., Best, A.W., and Berthaume, M. (2016). What did Hadropithecus eat, and why should paleoanthropologists care?. American Journal of Primatology, 78, 1098-1112.
  • Godfrey, L.R., and Crowley, B.E. (2016). Madagascar’s ephemeral paleo-grazer guild: Who ate the ancient grasses? . Proceedings of the Royal Society B, 283, 20160360.
  • Crowley, B.E., Reitsema, L., Oelze, V.M., and Sponheimer M. (2016). Advances in primate stable isotope ecology – achievements and future prospects. American Journal of Primatology, 78, 995-1003.
  • Carlson, B.A. and Crowley, B.E. (2016). Comparative δ13C variation in chimpanzee dietary ecology at Ngogo and Bwindi Impenetrable National Park, Uganda. American Journal of Primatology, 78, 1031-1040.
  • Gnezdilova, V.V., Ruban, D.A., Bruno, D.E., Perrotta, P., Crowley, B.E., Oheim, K.B., Zayats, P.P. (2015). Geoheritage sites with palaeogeographical value: some geotourism perspectives with examples from Mountainous Adygeja (Russia). Annales Géologiques de la Péninsule Balkanique, 76, 93-104.
  • Baumann, E., and Crowley, B.E. (2015). Stable isotopes reveal ecological differences amongst now-extinct proboscideans from the Cincinnati region, USA. Boreas, 44 (1), 240-254..
  • Kistler, L., Ratan, A., Godfrey, L.R., Crowley, B.E., Hughes, C.E., Lei, R., Cui, Y., Wood, M.L., Muldoon, K.M., Andriamialison, H., McGraw, J.J., Tomsho, L.P., Schuster, S.C.,Miller, W., Louis, E.E., Yoder, AD., Mahli, R.S., Perry, G.H. (2015). Comparative and population mitogenomic analyses of Madagascar's extinct, giant ‘subfossil’ lemurs. Journal of Human Evolution, 79, 45-54.
  • Tankersley, K.B., Murari, M., Crowley, B.E., Owen, L.A., Storrs, G.W., and Mortensen, L. (2015). Quaternary chronostratigraphy and stable isotope paleoecology of Big Bone Lick, Kentucky, USA. Quaternary Research, 83 (3), 479-487.
  • Crowley, B.E., Melin, A.D.,Yeakel, J.D., Dominy, N.J. (2015). Do oxygen isotope values in collagen reflect the ecology and physiology of neotropical mammals?. Frontiers in Ecology and Evolution, 3, 127.
  • Crowley, B.E., and Wheatley, P.V. (2014). To bleach or not to bleach? Comparing treatment methods for isolating biogenic carbonate. Chemical Geology, 381, 234-242..
  • Melin A. D., Crowley B. E., Brown S. T., Wheatley P. V., Moritz G. L., Tuh Yit Yu F., Bernard H., DePaolo D. J., Jacobson A. D., and Dominy N. J. (2014). Calcium and carbon stable isotope ratios as paleodietary indicators. American Journal of Physical Anthropology, 154 (4), 633-643.
  • Pestle, W.J., Crowley, B.E., and Weirauch, M.T. (2014). Quantifying inter-laboratory variability in stable isotope analysis of ancient skeletal remains. PLoS ONE, 9 (7), e102844.
  • Bruno, D.E., Crowley, B.E., Gutak, J.M., Moroni, A., Nazarenko, O.V., Oheim, K.B., Ruban, D.A., Tiess, G., and Zorina, S.O. (2014). Paleogeography as geological heritage: developing geosite classification. Earth-Science Reviews, 138, 300-312..
  • Crowley B. E., Rasoazanabary E., and Godfrey L. R (2014). Stable isotopes complement focal individual observations and confirm dietary variability in reddish-gray mouse lemurs (Microcebus griseorufus) from southwestern Madagascar. American Journal of Physical Anthropology, 155 (1), 77-90..
  • Crowley, B.E., Blanco, M.B., Arrigo-Nelson, S.J., and Irwin, M.T. (2013). Stable isotopes document resource partitioning and differential response to forest disturbance in sympatric cheirogaleid lemurs. Naturwissenschaften, 100 (10), 943-956..
  • Crowley, B.E., Samonds, K.E. (2013). Stable isotopes confirm a recent increase in grasslands in Northwestern Madagascar. The Holocene, 23, 1066-1073.
  • Crowley, B.E., and Godfrey, L.R (2013). Why all those spines? Anachronistic defenses in the Didiereoideae against extinct lemurs. South African Journal of Science, 109, 70-76.
  • Muldoon, K.M., Crowley, B.E., Godfrey, L.R., Rasoamiaramanana, A., Aronson, A., Jernvall, J., Wright, P.C., and Simons, E.L. (2012). Early Holocene fauna from a new subfossil site: A preliminary report from Christmas River, South central Madagascar. Madagascar Conservation and Development, 7: (1), 23-29..
  • Crowley, B.E., McGoogan, K., Lehman, S.M. (2012). Edge effects on foliar stable isotope values in a Madagascan tropical dry forest. PLoS ONE, http://dx.plos.org/10.1371/journal.pone.0044538.
  • Crowley, B.E., Godfrey, L.R., Guilderson, T.P., Koch, P.L., and Dominy, N.J. (2012). Extinction and ecological retreat in a community of primates. Proceedings of the Royal Society of London B, 2279, 3597-3605.
  • Crowley, B.E. (2012). Stable isotope techniques and applications for primatologists. International Journal of Primatology, 33:, 673-701..
  • Vogel, E.R., Knott, C.D., Crowley, B.E., Blakely, M.D., Larsen, M.D., and Dominy, N.J. (2012). Bornean orangutans at the brink of protein bankruptcy. Biology Letters, 8:, 333-336..
  • Vogel, E.R., Crowley, B.E., Knott, C.D., Blakely, M.D., and Dominy, N.J. (2012). Non-invasive method for quantifying nitrogen balance in free-ranging primates. International Journal of Primatology, 33:, 567-587..
  • Crowley, B.E., Thorén, S., Rasoazanabary, Vogel, E.R., E., Barrett, M.A., Zohdy, S., Blanco, B.B., McGoogan, K., Arrigo-Nelson, S., Irwin, M.T., Wright, P.C., Radespiel, U., Godfrey, L.R., Koch, P.L., and Dominy, N.J. (2011). Explaining geographical variation in the isotope composition of mouse lemurs (Microcebus). Journal of Biogeography, 38:, 2106-2121..
  • Crowley, B.E. (2011). Extinction and rediscovery: where the wild things are. Journal of Biogeography, 38:, 1633-1634..
  • Crowley, B.E., Godfrey, L.R., and Irwin, M.T. (2011). A glance to the past: Subfossils, stable isotopes, seed dispersal, and species loss in southern Madagascar. American Journal of Primatology, 73:, 25-37.
  • Godfrey, L.R., Crowley, B.E., Dumont, E. (2011). Thinking outside the box: A lemur's take on hominin craniodental evolution. Proceedings of the National Academy of Sciences, 108: (38), E742..
  • Crowley, B.E. (2010). A refined chronology of prehistoric Madagascar and the demise of the megafauna; new clues from old bones. Quaternary Science Reviews, 29:, 2592-2604..
  • Crowley, B.E., Carter, M.L., Karpanty, S.M., Zihlman, A.L., Koch, P.L., and Dominy, N.J. (2010). Stable carbon and nitrogen isotope enrichment in primate tissues. Oecologia, 164:, 611-626..
  • Samonds, K.E., Parent, S.N., Muldoon, K.M., Crowley, B.E., and Godfrey, L.R. (2010). Rock matrix surrounding subfossil lemur skull yields diverse collection of mammalian subfossils: Implications for reconstructing Madagascar’s paleoenvironments. Malagasy Nature, 4:, 1-16..
  • Crowley, B.E., Koch, P.L., and Davis, E.B. (2008). Tracing the isotopic rain shadow and elevation history of the Sierra Nevada Mountains, California. GSA Bulletin, 120:, 588-598..
  • Sparks, J.M., Crowley, B.E. (2018). Where did people forage in prehistoric Trinidad? Testing the utility of a multi-isotope approach for tracking the origins of terrestrial prey. Journal of Archaeological Science Reports, 19, 968-978.
  • Cooke, S.B., and Crowley, B.E. (In Press). Deciphering the isotopic niches of now-extinct Hispaniolan rodents. Journal of Vertebrate Paleontology.
  • Crowley, B.E., Castro, I., Goodman, S.M., and Soarimalala, V. (2018). Isotopic evidence for niche partitioning and the influence of anthropogenic forest loss and disturbance on the diet and mobility of endemic and introduced rodents in the Central Highlands of Madagascar. Naturwissenschaften, 105 (44), https://doi.org/10.1007/s00114-018-1564-y.
  • McCool, J-P.P., Fladd, S.G., Scarborough, V.L., Plog, S., Dunning, N.P., Owen, L.A., Watson, A.S., Bishop, K.J., Crowley, B.E., Haussner, E.A., Tankersley, K.B., Lentz, D., Carr, C., and Thress, J.L. (2018). Soil salinity in discussions of agricultural feasibility for ancient civilizations: A critical review and reanalysis of the data and debate from Chaco Canyon, New Mexico. PLoS ONE, 13 (6), p.e0198290.
  • Scarborough, V.L., Fladd, S.G., Dunning, N.P., Plog, S., Owen, L.A., Carr, C., Tankersley, K.B., McCool, J-P., Watson, A.S., Haussner, E.A., Crowley, B.E., Bishop, K.J., Lentz, D.L., and Vivian, G. (2018). Water Uncertainty and Ritual Predictability at Chaco Canyon, New Mexico. Antiquity, 92 (364), 870-889..
  • Hixon, S.W., Elliott Smith, E.A., Crowley, B.E., Perry, G.H., Kennett, D.J., and Newsome, S.D (In Press). Patterns in amino acid δ15N values of lemurs are inconsistent with aridity driving megafaunal extinction in Southwestern Madagascar. Journal of Quaternary Science.
  • Craine, J., Elmore, A.J., Aranibar, J., Bauters, M., Pascal Boeckx, P., Crowley, B.E., Dawes, M.A., Delzon, S., Fajardo, A., Fang, Y., Fujiyoshi, L., Gray, A., Guerrieri, R., Gundale, M.J., Hawke, D.J., Hietz, P., Jonard, M., Kearsley, E., Kenzo, T., Makarov, M., Marañón-Jiménez, S., McGlynn, T.P., McNeil, B.E., Mosher, S.G., Nelson, D.M., Peri, P.L., Roggy, J.C., Sanders-DeMott, R., Song, M., Szpak, P., H. Templer, P.H., Van der Colff, D., Wang, L., Werner, C., Xu, X., Yang, Y., Yu, G., Zmudczyńska-Skarbek, K (In Press). Isotopic evidence for oligotrophication of terrestrial ecosystems. Nature Ecology and Evolution.
  • Burney, D.A., Andriamialison, H., Andrianarivelo, R., Bourne, S., Crowley, B.E., de Boer, E., Godfrey, L.R., Goodman, S.M., Griffiths, C, Griffiths, O., Hume, J.P., Jungers, W.L., Middleton, G., Noromalala, E., Perez, V.R., Perry, G.H., Randalana, R., and Wright, H.T. (Under Review). Subfossil lemur discoveries from the Beanka protected area in western Madagascar. Journal of Human Evolution.
  • Samonds, K.E., Crowley, B.E., Rasolofomanana, T.R.N., Andriambelomanana, M.C., Andrianavalona, H.T., Ramihangihajason, T.N., Rakotozandry, R., Nomenjanahary, Z.B., Irwin, M.T., Wells, N.A., and Godfrey, L.R. (Under Review). A new late Pleistocene subfossil site (Tsaramody, Sambaina basin, central Madagascar) with implications for the chronology of habitat and megafaunal community change on Madagascar’s central plateau. Journal of Quaternary Science.
  • Wallace, J.P. Crowley, B.E., and Miller, J.H. (Under Revision). Investigating equid mobility in Miocene Florida, USA using strontium isotope ratios. Palaeogeography, Palaeoclimatology, Palaeoecology.
  • Godfrey, L.R., Scroxton, N., Crowley, B.E., Burns, S., Sutherland, M., Pérez, V., Faina, P., McGee. D., and Ranivoharimanana, L. (Under Review). A new interpretation of Madagascar’s megafaunal decline: the “Subsistence Shift Hypothesis”. Journal of Human Evolution.

Book Chapters

  • Heck, L., † Crowley, B., Thorén, S., and Radespiel, U. (2016). Determinants of isotopic variation in two mouse lemur species from northwestern Madagascar. Dwarf and Mouse Lemurs of Madagascar: Biology, Behavior and Conservation Biogeography of the Cheirogaleidae (pp.281-304). Cambridge University Press series, Studies in Biological and Evolutionary Anthropology.
  • Crowley, B.E., and Godfrey, L.R. (2013). Isotopic variability and lemur diet in a dry Malagasy forest: A cautionary tale. Leaping Ahead: Advances in Prosimian Biology (pp.173-182). New York: Springer.
  • Crowley, B.E., and Sparks, J.A. (In Press). Geology. Revue Des Aires Protégées de Madagascar/Review of Madagascar's Protected Areas Antananarivo & Chicago: Association Vahatra & The University of Chicago Press.
  • Sponheimer, M., and Crowley, B.E. (In Press). Evaluating primate diets with stable isotopes. Primate Diet & Nutrition Chicago: University of Chicago Press.

Encyclopedia Articles

  • Crowley, B.E. (2017). Stable isotope Ecology. The International Encyclopedia of Primatology (pp.Entry 314).

Popular Magazine Articles

  • Crowley, B.E., and Haak, B.A. (2018). A geochemical tool for determining natal origin of raptors. Hawk Chalk, August, 18-19.

Other Publications

  • The CenTREAD Working Group (2005). Farmers and the Forest: Can Agroforestry Actually Conserve Biodiversity?. Conservation Biology, 19, 2043-2044.

Experience & Service

Work Experience

  • 2017Associate Professor, University of Cincinnati.
  • 2017Associate Professor, University of Cincinnati.
  • 2011 to 2017, Assistant Professor, Department of Geology, University of Cincinnati.
  • 2011 to 2017, Assistant Professor, Department of Anthropology, University of Cincinnati.
  • 2010 to 2011, Lecturer, Department of Anthropology, University of Toronto.
  • 2010 to 2011, Research Fellow, Department of Earth and Planetary Sciences, UC Santa Cruz.
  • 2009 to 2010, Postdoctoral Fellow, Department of Anthropology, University of Toronto.
  • 2009Apprentice, Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, CA.
  • 2005 to 2005, Intern, School for Field Studies, Centre for Marine Resource Management, Turks and Caicos.
  • 2003 to 2005, Science Fellow, Center for Informal Learning and Schools, UC Santa Cruz.
  • 2003 to 2008, Teaching Assistant, UC Santa Cruz.
  • 2018Graduate Director, Department of Geology, University of Cincinnati.

Other Experience and Professional Memberships

  • 2013, ISOMASS EA-IRMS, MS-IRMS, and GC-IRMS Isotope Ratio Mass Spectrometry Training Workshops, University of Ottawa
  • 2006, Stable Isotopes in Ecology Short Course, University of Utah
  • 2003, Field Camp, Department of Earth Sciences, UC Santa Cruz
  • 2002, German Study Abroad Program, Vassar College,, Münster, Deutschland
  • 2000, School for Field Studies, Tropical Rainforest Management, Queensland, Australia
  • 2000, Undergraduate Research Summer Internship,, Vassar College
  • 1999 to 2001 ,Research Assistant, Institute of Arctic and Alpine Research, University of Colorado, Boulder
  • American Association of Physical Anthropologists
  • Biogeosphere-Atmosphere Stable Isotope Network
  • Phi Beta Kappa, Mu Chapter
  • Professional Association of Diving Instructors (PADI)
  • Sigma Xi

Courses Taught

  • Level: Undergraduate
    Comments: Honors course co-Taught with Dr. Lewis Owen and Dr. Ken Tankersley during Winter term 2012
  • Level: Undergraduate
    Comments: Taught during odd Spring semesters.
  • Level: Both
    Comments: Taught during even Fall semesters.
  • Level: Graduate
    Comments: Taught during Winter Semester 2012.
  • Level: Both
    Comments: Taught during odd Fall semesters.
  • Level: Undergraduate
    Comments: Taught during Spring Semester 2014 and 2016.
  • Level: Both
    Comments: UC Forward course co-taught with Drs. Aaron Diefendorf, Linda Plevyak, and Kenneth Tankersley during Summer 2013.
  • Level: Both
    Comments: Co-taught with Drs. Brian Davies, Craig Dietsch, and Lewis Owen during Spring and Summer terms, 2013.
  • Level: Undergraduate
    Comments: Taught during Spring Semester 2016.
  • Level: Both
    Comments: Co-taught with Dr. Chris Atchison during odd Fall semesters.
  • Level: Both
    Comments: Co-taught with Dr. Carl Brett during odd Spring semesters.
  • Level: Graduate