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Education

Ph.D. Ecology (Marine Ecology), University of Georgia, 2010-2016
                                       Advisor, James E. Byers
M.S. degree, Environmental Science, Western Washington University, 2008
                                       Advisor, Brian Bingham
B.A. degree, Biology with a minor in Asian Studies, Colorado College, 2005
                                      Advisor, Ron Hathaway
Coursework, University of Washington Friday Harbor Labs, Summer 2004, Summer and Fall 2005

Publications
 
2025:

Prentice, M.B., Crandall, G.A., Chan, A.M., Davis, K.M., Hershberger, P.K., Finke, J.F., Hodin, J., McCracken, A., Kellogg, C.T.E., Clemente-Carvalho, R.B.G., Prentice, C., Zhong, K.X., Harvell, C.D., Suttle, C.A. and Gehman, A.-L.M. (2025) “Vibrio pectenicida strain FHCF-3 is a causative agent of sea star wasting disease,” Nature Ecology & Evolution. Available at: https://doi.org/10.1038/s41559-025-02797-2.
Zhong, K.X., Chan, A.M., Prentice, M.B., Gouin, Y., Harvell, D., Gehman, A.-L.M. and Suttle, C.A. (2025) “Draft genome sequence of Vibrio pectenicida strain FHCF-3, a causative agent of sea star wasting disease in the sunflower sea star (Pycnopodia helianthoides), reveals the genetic potential to produce aerolysin-like toxins,” Microbiology Resource Announcements, 0(0), pp. e00287-25. Available at: https://doi.org/10.1128/mra.00287-25.
Gehman, A.-L. M., O. Pontier, T. Froese, D. VanMaanen, T. Blaine, G. Sadlier-Brown, A. M. Olson, et al. 2025. Fjord oceanographic dynamics provide refuge for critically endangered Pycnopodia helianthoides. Proceedings of the Royal Society B: Biological Sciences 292:20242770. https://doi.org/10.1098/rspb.2024.2770

2024:
Calvo-Monge, J., J. Arroyo-Esquivel, A.-L. Gehman, and F. Sanchez. 2024. Source-Sink Dynamics in a Two-Patch SI Epidemic Model with Life Stages and No Recovery from Infection. Bulletin of Mathematical Biology 86:102. 
Davis, K. M., L. W. Parfrey, C. D. G. Harley, K. Holmes, O. Schaefer, and A.-L. Gehman. 2024. Epibiont communities on mussels in relation to parasitism and location in the rocky intertidal zone. FEMS Microbiology Ecology. https://doi.org/10.1093/femsec/fiae101
Pfenning-Butterworth, A., L. B. Buckley, J. M. Drake, J. E. Farner, M. J. Farrell, A. M. Gehman, E. A. Mordecai, P. R. Stephens, J. L. Gittleman, T. J. Davies. 2024. Interconnecting global threats: climate change, biodiversity loss, and infectious diseases. The Lancet Planetary Health. doi.org/10.1016/S2542-5196(24)00021-4
Kirk, D., S. Straus, M. L. Childs, M. Harris, L. Couper, T. J. Davies, C. Forbes, A. M. Gehman, M. L. Groner, C. Harley, K. D. Lafferty, V. Savage, E. Skinner, M. O’Connor, E. A. Mordecai. 2024. Temperature impacts on dengue incidence are nonlinear and mediated by climatic and socioeconomic factors. Plos Climate. https://doi.org/10.1371/journal.pclm.0000152
2023:
Beaty, F., A. M. Gehman, G. Brownlee**, and C. D. G. Harley. 2023. Not just range limits: Warming rate and thermal sensitivity shape climate change vulnerability in a species range center. Ecology 104:e4183. https://doi.org/10.1002/ecy.4183
Prentice, C., A. M. Gehman, and C. T. E. Kellogg. 2023. Comparison of swab DNA extraction methods for examining sea star dermal microbiomes. Aquatic Microbial Ecology 89:119–125. https://doi.org/10.3354/ame02001​
Hector, T. E., A. M. Gehman, and K. C. King. 2023. Infection burdens and virulence under heat stress: ecological and evolutionary considerations. Philosophical Transactions of the Royal Society B: Biological Sciences 378:20220018.

2022:
Heady, W.N., R. Beas-Luna, M.N Dawson, N. Eddy, K. Elsmore, F. T. Francis, T. Frierson, A.M. Gehman, T. Gotthardt, S.A., Gravem, J. Grebel, S. L. Hamilton, L. Hannah, C.D. Harvell, J. Hodin, I. Kelmartin, C. Krenz, L. Lee, J. Lorda, D. Lowry, S. Mastrup, E. Meyer, P. T. Raimondi, S. S. Rumrill, V. R. Saccomanno, L. M. Schiebelhut, C. Siddon. 2022. Roadmap to recovery for the sunflower sea star (Pycnopodia helianthoides) along the west coast of North America. The Nature Conservancy, Sacramento, CA, US.

2021:
Gehman, A. M., M. Mahaffey, and J. E. Byers. 2021. Influences of land use and ecological variables on trematode prevalence and intensity at the salt marsh‐upland ecotone. Ecosphere 12.
Hamilton, S. L., V. R. Saccomanno, W. N. Heady, A.M. Gehman, S. I. Lonhart, R. Beas-Luna, F. T. Francis, L. Lee, L. Rogers-Bennett, A. K. Salomon, and S. A. Gravem. 2021. Disease-driven mass mortality event leads to widespread extirpation and variable recovery potential of a marine predator across the eastern Pacific. Proceedings of the Royal Society B 288:20211195. 10.1098/rspb.2021.1195
Quinn, J., S. Lee, D. Greeley, A.M. Gehman, A.M. Kuris, and C.L. Wood. 2021. Long-term change in the parasite burden of shore crabs (Hemigrapsus oregonensis and H. nudus) on the northwestern Pacific coast of North America. Proceedings of the Royal Society B.
Morales-Castilla, I., P. Pappalardo, M. J. Farrell, A. A. Aguirre, S. Huang, A. M. Gehman, T. Dallas, D. Gravel, C. J. Carlson and T. J. Davies. 2021. Forecasting parasite sharing under climate change. Philosophical Transactions B.

2020: 
Gravem, S.A., W.N. Heady, V.R. Saccomanno, K.F. Alvstad, A.M. Gehman, T.N. Frierson, S.L. Hamilton. 2020. Pycnopodia helianthiodes. IUCN Red List of Threatened Species 2020, e.T178290276A178341498.

2019:
Gehman, A.M. C. Keogh, D.A. Satterfield, A.K. McKay, S. Budischak. 2019. To improve ecological understanding, collect infection data. Ecosphere, 10.1002/ecs2.2770

Gehman, A.M. and C.D.G. Harley. 2019. Symbiotic endolithic microbes alter host morphology and reduce host vulnerability to high  environmental temperatures. Ecosphere. doi.org/10.1002/ecs2.2683

​Kay, S., A.M. Gehman and C.D.G. Harley. Reciprocal abundance shifts of the intertidal sea stars, Evasterias troschelii and Pisaster ochraceus, following sea star wasting disease. Proceedings of the Royal Society B.

Dallas, T., A.M. Gehman, A.A. Aguirre, S. A. Budischak, J.M. Drake, M.J. Farrell, R. Ghai, S. Huang, I. Morales-Castilla. 2019. Contrasting latitudinal gradients of body size in helminth parasites and their hosts. Global Ecology and Biogeography, 10.1111/geb.12894
         
2018:
Gehman, A.M., R.J. Hall and J.E. Byers.  Host and parasite thermal ecology jointly determine the effect of climate warming on epidemic dynamics. PNAS.
Dallas, T., A.M. Gehman, M. J. Farrell. 2018. Variable Bibliographic database could limit reproducibility. BioSciences. 10.1093/biosci/biy074

Dallas, T., A.M. Gehman, A.A. Aguirre, S. A. Budischak, J.M. Drake, M.J. Farrell, R. Ghai, S. Huang, I. Morales-Castilla. 2018. Contrasting latitudinal gradients of body size in helminth parasites and their hosts. Global Ecology and Biogeography.
 
2017
Gehman, A.M., N.A. McLenaghan, J.E. Byers, C.R. Alexander, S.C. Pennings, and M. Alber. Effects of small-scale armoring and residential development on the salt marsh/upland ecotone. Estuaries and Coasts.

Dugan, J.E., K.A. Emery, M. Alber, C. Alexander, J.E. Byers, A.M. Gehman, N. McLenaghan, S. Sojka. Ecological effects of shoreline armoring in soft sediment environments. Estuaries and Coasts.
 
2016
Gehman, A.M., J.H. Grabowski, A.R. Hughes, D.L. Kimbro, M.F. Piehler and J.E. Byers. 2016. Predators, environment and host characteristics influence the probability of infection by an invasive castrating parasite. Oecologia. doi: 10.1007/s00442-016-3744-9

Gehman, A.M. and J.E. Byers. 2016. Non-native parasite enhances host susceptibility to native predators. Oecologia. 
 
2015
Sudek, S., R. Everroad, A.M. Gehman, J. Smith, F. Chavez, A.Z. Worden. Cyanobacterial distributions along a Physico-chemical                          Gradient in the Northeastern Pacific Ocean. 2015.  Environmental Microbiology. 

2013
Santoro, A. E., C. M. Sakamoto, J. M. Smith, J. N. Plant, A. L. Gehman, A. Z. Worden, K. S. Johnson, C. A. Francis and K. L. Casciotti.  2013.  Measurements of Nitrate production in and around the primary nitrate maximum in the central California current.  Biogeosciences, 10, 7395-7410.
         
2010
Gehman. A. M., B. L. Bingham. 2010. Maternal diet and juvenile quality in the sea star Leptasterias aequalis. Journal of Experimental Marine Biology and Ecology, 386, 86-93.

Published Data:
Kay S, Gehman A.M., Harley C. 2019. Data from: Reciprocal abundance shifts of the intertidal sea stars, Evasterias troschelii and Pisaster ochraceus, following sea star wasting disease. Dryad Digital Repository. https://doi.org/10.5061/dryad.5b2k785.2

Gehman, A.M. 2018. Code and data associated with: Host and parasite thermal ecology jointly determine the effect of climate warming on epidemic dynamics. https://github.com/alyssamina/Thermal-ecology-disease.

Gehman, A. 2016. Effects of small-scale armoring and residential development on the salt marsh/upland ecotone in coastal Georgia, USA. Georgia Coastal Ecosystems LTER Project, University of Georgia, Long Term Ecological Research Network                 http://dx.doi.org/10.6073/pasta/76497936543330a1895015df794ab077