James W Dalling

James W Dalling

Contact Information

286 Morrill Hall
505 S. Goodwin Ave
Urbana, IL 61801

Research Areas

Professor

Research Description

Tropical forest dynamics, plant-soil and plant-fungal interactions, seed ecology

My research concerns the population and community ecology of tropical forests, with a particular interest in understanding how soil nutrient availability and soil microbial communities shape the composition and diversity of tree communities. Much of my work is carried out with collaborators at the Smithsonian Tropical Research Institute, in Panama, where I am a Research Associate Scientist. My work is carried out principally on Barro Colorado Island in the Panama Canal Watershed, or at the Fortuna Forest Reserve and Volcan Barú in western Panama where I established and maintain a network of forest dynamics plots that encompass a wide range of soil nutrient availabilities and elevation (700-3200m).

Current projects explore:

  1. seed-infecting fungi as a model system for understanding how plant-pathogen interactions and plant defense traits influence abundance and coexistence
  2. role of soil nutrient availability in structuring tree communities and plant functional traits
  3. role of wood nutrients as a plant nutrient store in nutrient-poor soil and as a determinant of wood decomposer community composition and decay rate

Education

B.A., 1988, Oxford University
Ph.D., 1992, Cambridge University

Awards and Honors

Delcomyn Professorial Scholar
Visiting Fellow, Magdalen College, Oxford
Beaufort Visiting Fellow, St John's College, Cambridge

Additional Campus Affiliations

Professor, Plant Biology
Professor, Center for Latin American and Caribbean Studies

Recent Publications

Mosig, C., Vajna-Jehle, J., Mahecha, M. D., Cheng, Y., Hartmann, H., Montero, D., Junttila, S., Horion, S., Schwenke, M. B., Koontz, M. J., Maulud, K. N. A., Adu-Bredu, S., Al-Halbouni, D., Ali, M., Allen, M., Altman, J., Amorós, L., Angiolini, C., Astrup, R., ... Kattenborn, T. (2026). deadtrees.earth — An open-access and interactive database for centimeter-scale aerial imagery to uncover global tree mortality dynamics. Remote Sensing of Environment, 332, Article 115027. https://doi.org/10.1016/j.rse.2025.115027

Oliveira, D. N., Ordóñez-Parra, C. A., Chen, S. C., Arnold, A. E., Davis, A. S., González, A. M. T., Morales-Pérez, A. L., Díaz-Castellanos, A. R., Pérez-Enriquez, A., Fidelis, A., Carvalho, A. S. R., Santos, A. S., Sandoval, A. C., Crestani, A. C. V., Mairinck, A. L. A., Neto, A. D. A., Coetzee, A., Traveset, A., Andrade, A. C. S., ... Silveira, F. A. O. (2026). Tropical Seed Trait Database: advancing seed functional ecology in the world's most biodiverse region. New Phytologist, 251(3), 945-958. https://doi.org/10.1111/nph.71268

Poschlod, P., Mašková, T., Chen, S. C., Phartyal, S. S., Rosbakh, S., Silveira, F. A. O., Saatkamp, A., Dalling, J. W., Dalziell, E., Dickie, J. B., Fernández-Pascual, E., Guja, L. K., Jiménez-Alfaro, B., Merritt, D. J., Ooi, M. K. J., & Vandelook, F. (2026). A handbook for standardised measurements of plant reproductive traits: from pollen grain to seedling. Australian Journal of Botany, 74(2), Article BT25074. https://doi.org/10.1071/BT25074

Wong, M. Y., Batterman, S. A., Lucas, J. M., Fleischer, K., Ashton, M. S., Bauters, M., Burslem, D. F. R. P., Cushman, K. C., Dalling, J. W., Doetterl, S., Esquivel-Muelbert, A., Fortunel, C., Holm, J. A., Huanca-Nunez, N., Liang, G., Libalah, M. B., Lira-Martins, D., Medina-Vega, J. A., Muller-Landau, H. C., ... Gora, E. M. (2026). Soil fertility controls on tropical forest productivity and mortality: synthesis and roadmap. New Phytologist. Advance online publication. https://doi.org/10.1111/nph.71367

Aguirre-Gutiérrez, J., Díaz, S., Rifai, S. W., Corral-Rivas, J. J., Nava-Miranda, M. G., Gonzálezm, R., Hurtadom, A. B., Revilla, N. S., Vilanova, E., Almeida, E., de Oliveira, E. A., Alvarez-Davila, E., Alves, L. F., de Andrade, A. C. S., da Costa, A. C. L., Vieira, S. A., Aragão, L., Arets, E., Aymard, G. A. C., ... Malhi, Y. (2025). Tropical forests in the Americas are changing too slowly to track climate change. Science, 387(6738), Article eadl5414. https://doi.org/10.1126/science.adl5414

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