Staff Profile
Sean McMahon

Biography

My lab is focused on understanding how tree demography--the growth, survival, and recruitment of individual stems--is driven by physiological and environmental processes. We also study how demographic dynamics drive large-scale patterns of forest structure, function, and diversity. Much of our work evolves from using extant data from both the Smithsonian's ForestGEO network, FIA, remote sensing data sets, and extensive research of Geoffrey Parker, a colleague and forest ecologist at the Smithsonian Environmental Research Center, where we are based. We also explore these questions by collecting new data whenever possible. If a research focus is on forest dynamics, there is no limit to the kinds of projects we want to weave into our team.


I am the Temperate Program Coordinator for the Smithsonian Institution's CTFS-ForestGEO network. There are currently 17 temperate plots in the program in North America and Europe, with a number of other partner plots in China. My responsibilities for the network involve facilitating synthetic science, assisting network partners in research, data-collection, and data vetting, storage and curation. I also work to expand the network into new biomes, with unique flora, disturbance histories, and new partner institutions to promote fundamental research to build a global understanding of forest dynamics.

Publications

  • Needham, Jessica ; Merow, Cory ; Butt, Nathalie ; Malhi, Yadvinder ; Marthews, Toby R. ; Morecroft, Michael ; McMahon, Sean M.. (2016). Forest community response to invasive pathogens: the case of ash dieback in a British woodland . Journal of Ecology, 104 (2) , 315-330. http://dx.doi.org/10.1111/1365-2745.12545
  • Anderson-Teixeira, Kristina J. ; Davies, Stuart James ; Bennett, Amy C. ; González-Akre, Erika B. ; Muller-Landau, Helene C. ; Wright, S. Joseph ; Abu Salim, Kamariah ; Almeyda Zambrano, Angélica M. ; Alonso, Alfonso ; Baltzer, Jennifer L. ; Basset, Yves ; Bourg, Norman A. ; Broadbent, Eben N. ; Brockelman, Warren Y. ; Bunyavejchewin, Sarayudh ; Burslem, David F. R. P. ; Butt, Nathalie ; Cao, Min ; Cardenas, Dairon ; Chuyong, George B. ; Clay, Keith ; Cordell, Susan ; Dattaraja, Handanakere S. ; Deng, Xiaobao ; Detto, Matteo ; Du, Xiaojun ; Duque, Alvaro ; Erikson, David L. ; Ewango, Corneille E. N. ; Fischer, Gunter A. ; Fletcher, Christine ; Foster, Robin B. ; Giardina, Christian P. ; Gilbert, Gregory S. ; Gunatilleke, Nimal ; Gunatilleke, Savitri ; Hao, Zhanqing ; Hargrove, William W. ; Hart, Terese B. ; Hau, Billy C. H. ; He, Fangliang ; Hoffman, Forrest M. ; Howe, Robert W. ; Hubbell, Stephen P. ; Inman-Narahari, Faith ; Jansen, Patrick A. ; Jiang, Mingxi ; Johnson, Daniel J. ; Kanzaki, Mamoru ; Kassim, Abdul Rahman ; Kenfack, David ; Kibet, Staline ; Kinnaird, Margaret F. ; Korte, Lisa ; Kral, Kamil ; Kumar, Jitendra ; Larson, Andrew J. ; Li, Yide ; Li, Xiankun ; Liu, Shirong ; Lum, Shawn K. Y. ; Lutz, James A. ; Ma, Keping ; Maddalena, Damian M. ; Makana, Jean-Remy ; Malhi, Yadvinder ; Marthews, Toby ; Mat Serudin, Rafizah ; McMahon, Sean M. ; McShea, William J. ; Memiaghe, Hervé R. ; Mi, Xiangcheng ; Mizuno, Takashi ; Morecroft, Michael ; Myers, Jonathan A. ; Novotny, Vojtech ; de Oliveira, Alexandre A. ; Ong, Perry S. ; Orwig, David A. ; Ostertag, Rebecca ; den Ouden, Jan ; Parker, Geoffrey G. ; Phillips, Richard P. ; Sack, Lawren ; Sainge, Moses N. ; Sang, Weiguo ; Sri-ngernyuang, Kriangsak ; Sukumar, Raman ; Sun, I-F ; Sungpalee, Witchaphart ; Suresh, Hebbalalu Sathyanarayana ; Tan, Sylvester ; Thomas, Sean C. ; Thomas, Duncan W. ; Thompson, Jill ; Turner, Benjamin L. ; Uriarte, Maria ; Valencia, Renato ; Vallejo, Marta I. ; Vicentini, Alberto ; Vrška,.... (2015). CTFS-ForestGEO: a worldwide network monitoring forests in an era of global change . Global Change Biology, 21 (2) , 528-549. http://dx.doi.org/10.1111/gcb.12712
  • Anderson-Teixeira, Kristina J. ; McGarvey, Jennifer C. ; Muller-Landau, Helene C. ; Park, Janice Y. ; González-Akre, Erika B. ; Herrmann, Valentine ; Bennett, Amy C. ; So, Christopher V. ; Bourg, Norman A. ; Thompson, Jonathan R. ; McMahon, Sean M. ; McShea, William J.. (2015). Size-related scaling of tree form and function in a mixed-age forest. Functional Ecology, 29 (12) , 1587-1602. http://dx.doi.org/10.1111/1365-2435.12470
  • McMahon, Sean M. ; Bebber, Daniel P. ; Butt, Nathalie ; Crockatt, Martha ; Kirby, Keith ; Parker, Geoffrey G. ; Riutta, Terhi ; Slade, Eleanor M.. (2015). Ground based LiDAR demonstrates the legacy of management history to canopy structure and composition across a fragmented temperate woodland. Forest Ecology and Management, 335 , 255-260. http://dx.doi.org/10.1016/j.foreco.2014.08.039
  • McMahon, Sean M. ; Parker, Geoffrey G.. (2015). A general model of intra-annual tree growth using dendrometer bands . Ecology and Evolution, 5 (2) , 243-254. http://dx.doi.org/10.1002/ece3.1117
  • Metcalf, C. Jessica E. ; Ellner, Stephen P. ; Childs, Dylan Z. ; Salguero-Gómez, Roberto ; Merow, Cory ; McMahon, Sean M. ; Jongejans, Eelke ; Rees, Mark. (2015). Statistical modelling of annual variation for inference on stochastic population dynamics using Integral Projection Models. Methods in Ecology and Evolution, 6 (9) , 1007-1017. http://dx.doi.org/10.1111/2041-210X.12405
  • Sexton, Joseph O. ; Noojipady, Praveen ; Anand, Anupam ; Song, Xiao-Peng ; McMahon, Sean M. ; Huang, Chengquan ; Feng, Min ; Channan, Saurabh ; Townshend, John R.. (2015). A model for the propagation of uncertainty from continuous estimates of tree cover to categorical forest cover and change . Remote Sensing of Environment, 156 , 418-425. http://dx.doi.org/10.1016/j.rse.2014.08.038
  • Visser, Marco D. ; McMahon, Sean M. ; Merow, Cory ; Dixon, Philip M. ; Record, Sydne ; Jongejans, Eelke. (2015). Speeding Up Ecological and Evolutionary Computations in R; Essentials of High Performance Computing for Biologists . PLoS computational biology, 11 (3) , 1-11. http://dx.doi.org/10.1371/journal.pcbi.1004140
  • Kral, Kamil ; McMahon, Sean M. ; Janik, David ; Adam, Dusan ; Vrska, Tomas. (2014). Patch mosaic of developmental stages in central European natural forests along vegetation gradient. Forest Ecology and Management, 330 , 17-28. http://dx.doi.org/10.1016/j.foreco.2014.06.034
  • Kral, Kamil ; McMahon, Sean M. ; Janik, David ; Adam, Dusan ; Vrska, Tomas. (2014). Patch mosaic of developmental stages in central European natural forests along vegetation gradient. Forest Ecology and Management, 330 , 17-28. http://dx.doi.org/10.1016/j.foreco.2014.06.034
  • Merow, Cory ; Dahlgren, Johan P. ; Metcalf, C. J. ; Childs, Dylan Z. ; Evans, Margaret E. K. ; Jongejans, Eelke ; Record, Sydne ; Rees, Mark ; Salguero-Gómez, Roberto ; McMahon, Sean M.. (2014). Advancing population ecology with integral projection models: a practical guide . Methods in Ecology and Evolution, 5 (2) , 99-110. http://dx.doi.org/10.1111/2041-210X.12146
  • Merow, Cory ; Latimer, Andrew M. ; Wilson, Adam M. ; McMahon, Sean M. ; Rebelo, Anthony G. ; Silander, John A., Jr.. (2014). On using integral projection models to generate demographically driven predictions of species' distributions: development and validation using sparse data. Ecography, 37 (12) , 1167-1183. http://dx.doi.org/10.1111/ecog.00839
  • Merow, Cory ; Smith, Mathew J. ; Edwards, Thomas C. ; Guisan, Antoine ; McMahon, Sean M. ; Normand, Signe ; Thuiller, Wilfried ; Wüest, Rafael O. ; Zimmermann, Niklaus E. ; Elith, Jane. (2014). What do we gain from simplicity versus complexity in species distribution models? . Ecography, 37 (12) , 1267-1281. http://dx.doi.org/10.1111/ecog.00845
  • Réjou-Méchain, M. ; Muller-Landau, Helene C. ; Detto, Matteo ; Thomas, S. C. ; Le Toan, T. ; Saatchi, S. S. ; Barreto-Silva, J. ; Bourg, N. A. ; Bunyavejchewin, S. ; Butt, N. ; Brockelman, W. Y. ; Cao, M. ; Cárdenas, D. ; Chiang, J. M. ; Chuyong, G. B. ; Clay, Keith ; Condit, Richard S. ; Dattaraja, H. S. ; Davies, Stuart James ; Duque, A. ; Esufali, S. ; Ewango, C. ; Fernando, R. H. S. ; Fletcher, C. D. ; Gunatilleke, I. A. U. N. ; Hao, Z. ; Harms, K. E. ; Hart, T. B. ; Hérault, B. ; Howe, R. W. ; Hubbell, Stephen P. ; Johnson, D. J. ; Kenfack, David ; Larson, A. J. ; Lin, L. ; Lin, Y. ; Lutz, J. A. ; Makana, J. R. ; Malhi, Y. ; Marthews, T. R. ; McEwan, R. W. ; McMahon, Sean M. ; McShea, William J. ; Muscarella, R. ; Nathalang, A. ; Noor, N. S. M. ; Nytch, C. J. ; Oliveira, A. A. ; Phillips, R. P. ; Pongpattananurak, N. ; Punchi-Manage, R. ; Salim, R. ; Schurman, J. ; Sukumar, R. ; Suresh, H. S. ; Suwanvecho, U. ; Thomas, D. W. ; Thompson, J. ; Uríarte, M. ; Valencia, R. ; Vicentini, A. ; Wolf, A. T. ; Yap, S. ; Yuan, Z. ; Zartman, C. E. ; Zimmerman, J. K. ; Chave, J.. (2014). Local spatial structure of forest biomass and its consequences for remote sensing of carbon stocks. Biogeosciences Discussions, 11 (4) , 5711-5742. http://dx.doi.org/10.5194/bgd-11-5711-2014
  • Chisholm, Ryan A. ; Muller-Landau, Helene C. ; Abdul Rahman, Kassim ; Bebber, Daniel P. ; Bin, Yue ; Bohlman, Stephanie A. ; Bourg, Norman A. ; Brinks, Joshua ; Bunyavejchewin, Sarayudh ; Butt, Nathalie ; Cao, Honglin ; Cao, Min ; Cárdenas, Dairon ; Chang, Li-Wan ; Chiang, Jyh-Min ; Chuyong, George ; Condit, Richard S. ; Dattaraja, Handanakere S. ; Davies, Stuart ; Duque, Alvaro ; Fletcher, Christine ; Gunatilleke, Nimal ; Gunatilleke, Savitri ; Hao, Zhanqing ; Harrison, Rhett D. ; Howe, Robert ; Hsieh, Chang-Fu ; Hubbell, Stephen P. ; Itoh, Akira ; Kenfack, David ; Kiratiprayoon, Somboon ; Larson, Andrew J. ; Lian, Juyu ; Lin, Dunmei ; Liu, Haifeng ; Lutz, James A. ; Ma, Keping ; Malhi, Yadvinder ; McMahon, Sean M. ; McShea, William J. ; Meegaskumbura, Madhava ; Mohd Razman, Salim ; Morecroft, Michael D. ; Nytch, Christopher J. ; Oliveira, Alexandre ; Parker, Geoffrey G. ; Pulla, Sandeep ; Punchi-Manage, Ruwan ; Romero-Saltos, Hugo ; Sang, Weiguo ; Schurman, Jon ; Su, Sheng-Hsin ; Sukumar, Raman ; Sun, I-F ; Suresh, Hebbalalu S. ; Tan, Sylvester ; Thomas, Duncan ; Thomas, Sean ; Thompson, Jill ; Valencia, Renato ; Wolf, Amy ; Yap, Sandra ; Ye, Wanhui ; Yuan, Zuoqiang ; Zimmerman, Jess K.. (2013). Scale-dependent relationships between tree species richness and ecosystem function in forests . Journal of Ecology, 101 (5) , 1214-1224. http://dx.doi.org/10.1111/1365-2745.12132

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