Mark Bradford, Assistant Professor of Terrestrial Ecosystem Ecology

Mark Bradford

Research Emphasis:

I am primarily interested in how global change (e.g. climate warming) affects plants, animals and microorganisms in grasslands and forests, and what the consequences are for ecosystem carbon cycling and storage.

Contact Information:

Primary Organization:  Yale University

Mailing Address:

Mark Bradford
School of Forestry & Environmental Studies
Yale University
370 Prospect St.
New Haven, CT 06511

Office Phone:  203-436-9148


Web Page:

CWT Publications and Presentations: (custom bibliography)

Journal Articles

Warren, R. J., Elliott, K. J., Giladi, I. , King, J. R. and Bradford, M. A. (2018), Field experiments show contradictory short- and long-term myrmecochorous plant impacts on seed-dispersing ants. Ecol Entomol. . doi:10.1111/een.12666

Keiser, A.D., M.A. Bradford (2017),Climate masks decomposer influence in a cross-site litter decomposition study, Soil Biology and Biochemistry, 107 , pp. 180–187, 10.1016/j.soilbio.2016.12.022

Warren, R.J., Love, J.P. & Bradford, M.A. (2017), Nest-mediated seed dispersal, Plant Ecol 218: 1213.

Keiser, A.D., Knoepp, J.D. & Bradford, M.A. (2016) Disturbance Decouples Biogeochemical Cycles Across Forests of the Southeastern US, Ecosystems 19: 50. doi:10.1007/s10021-015-9917-2

Bradford, Mark A., Robert J.Warren II, Petr Baldrian, Thomas W. Crowther, Daniel S. Maynard, Emily E. Oldfield,William R.Wieder, Stephen A.Wood and Joshua R. King, 2014. Climate Fails to Predict Wood Decomposition at Regional Scales. In Nature Climate Change, Letters, advanced online publication at

Warren, Robert J. II, Itamar Giladi and Mark A. Bradford, 2014. Competition as a Mechanism Structuring Mutualisms. Journal of Ecology 102:486-495

Bradford, Mark A., Ashley D. Keiser, Christian A. Davies, Calley A. Mersmann and Michael S. Strickland. 2013. Empirical evidence that soil carbon formation from plant inputs is positively related to microbial growth. Biogeochemistry 113: 271-281.

Keiser, A., Knoepp, J.D. and Bradford, M. 2013. Microbial communities may modify how litter quality affects potential decomposition rates as tree species migrate. Plant and Soil. (DOI: 10.1007/s11104-013-1730-0)

King, Joshua R., Robert J. Warren, and Mark A. Bradford. 2013. Social Insects Dominate Eastern US Temperate Hardwood Forest Macroinvertebrate Communities in Warmer Regions. PLOS ONE 8(10):e75843.

Warren, R.J. II, Bahn, V. and Bradford, M. 2013. Decoupling litter barrier and soil moisture influences on the establishment of an invasive grass. Plant and Soil. (DOI: 10.1007/s11104-012-1477-z)

Warren, R.J. II, Keiser, A., Ursell, T. and Bradford, M. 2013. Habitat, dispersal and propagule pressure control exotic plant infilling within an invaded range. Ecosphere. (DOI: 10.1890/ES12-00393.1)

Bradford, M.A., Strickland, M.S., Devore, J.L., Maerz, J.C. (2012) Root carbon flow from an invasive plant to belowground foodwebs. Plant and Soil. DOI: 10.1007/s11104-012-1210-y

Kramer, Timothy D., Robert J. Warren II, Yaya Tang and Mark Bradford (2012) Grass Invasions Across a Regional Gradient are Associated with Declines in Belowground Carbon Pools (online document:

Tang Yaya, Robert Warren III, Timothy Kramer, and Mark Bradford (2012) Plant invasion impacts on arthropod abundance, diversity and feeding consistent across environmental and geographic gradients. Biological Invasions:1-13. Online Version DOI:

Warren, R.J, Giladi, I., Bradford, M.A. (2012) Environmental heterogeneity and interspecific interactions influence nest colonization by key seed-dispersing ants. Environmental Entomology, 41, 463-468.

Fraterrigo, Jennifer M., Michael S. Strickland, Ashley D. Keiser, Mark A. Bradford. 2011. Nitrogen uptake and preference in a forest understory following invasion by an exotic grass. Oecologia. DOI:10.1007/s00442-011-2030-0

Keiser, A.D., Strickland, M.S., Fierer, N., Bradford, M.A. (2011) The effect of resource history on the functioning of soil microbial communities is maintained across time. Biogeosciences, 8, 1477-1486 (Part of Special Feature – Biotic interactions and biogeochemical processes in the soil environment)

Strickland, M.S., Devore, J.L., Maerz, J.C., Bradford, M.A. (2011) Loss of faster-cycling soil carbon pools following grass invasion across multiple forest sites. Soil Biology & Biochemistry, 43, 452-454.

Warren II, R. J., V. Bahn, T. D. Kramer, Y. Tang, and M. A. Bradford. 2011. Performance and reproduction of an exotic invader across temperate forest gradients. Ecosphere 2(2):art14. doi:10.1890/ES10-00181.1

Warren, R. J. II, V. Bahn, and M. A. Bradford. 2011. Temperature cues phenological synchrony in ant-mediated seed dispersal. Global Change Biology (Online First). doi: 10.1111/j.1365-2486.2010.02386.x.

Warren, R. J., D. K. Skelly, O. J. Schmitz, and M. A. Bradford. 2011. Universal ecological patterns in college basketball communities. PLoS ONE, 6(3): e17342.

Warren, R. J., II, Bradford, M.A., 2011, Ant colonization and coarse woody debris decomposition in temperate forests. Insectes Sociaux Vol 59:2, Nov. 19, 2011, DOI 10.1007/s00040-011-0208-4

Warren, Robert J., II, Bahn, V., and Bradford, M.A., 2011, The interaction between propagule pressure, habitat suitability and density-dependent reproduction in species invasion, Oikos: Synthesizing Ecology, November 2011,

Warren, Robert J., Justin P. Wright, Mark A. Bradford. 2011. The Putative Niche Requirements and Landscape Dynamics of Microstegium vimineum: an Invasive Asian Grass. Biological Invasions 13: 471-483

Bradford, M.A., B. W. Watts, C. A. Davies. 2010. Thermal adaptation of heterotrophic soil respiration in laboratory microcosms. Global Change Biology, 16: 1576-1588.

Strickland, M. S., J. L. Devore, J. C. Maerz, M. A. Bradford. 2010. Grass invasion of a hardwood forest is associated with declines in belowground carbon pools. Global Change Biology, 16: 1338-1350

Strickland, M.S., Callaham, M.A., Jr., Davies, C.A., Lauber, C.L., Ramirez, K., Richter, D.D., Jr., Fierer, N., Bradford, M.A., 2010. Rates of in situ carbon mineralization in relation to land-use, microbial community and edaphic characteristics. Soil Biology & Biochemistry v. 42:2, Feb. 2010, p. 260-269

Warren, R. J. and M. A. Bradford. 2010. The shape of things to come: woodland herb niche contraction begins during recruitment in mesic forest microhabitat. Proceedings of the Royal Society B, doi:10.1098/rspb.2010.1886.

Warren, R.J, and M.A. Bradford. 2010. Seasonal climate trends, the North Atlantic Oscillation and salamander abundance in the southern Appalachian mountain region. Journal of Applied Meteorology and Climatology. 49:1597-1603.

Ball, B.A., Bradford, M.A. 2009. Nitrogen and Phosphorus Release from Mixed Litter Layers is Lower than Predicted from Single Species Decay. Ecosystems 12: 87-100

Ball, B.A., Bradford, M.A., Coleman, D.C., Hunter, M.D. 2009. Linkages between below and aboveground communities: Decomposer responses to simulated tree species loss are largely additive. Soil Biology and Biochemistry. 40: 155-1163.

Bradford, M.A., DeVore, J.L., Maerz, J.C., McHugh, J.V., Smith, C.L., Strickland, M.S. 2009. Native, insect herbivore communities derive a significant proportion of their carbon from a widespread invader of forest understories. Biol Invasions.

Bradford, M.A., et al. 2009. Decreased mass specific respiration under experimental warming is robust to the microbial biomass method employed. Ecology Letters, 12: E15-E18.

Strickland, M.S., Lauber C., Fierer, N, Bradford, M.A. 2009. Testing the functional significance of microbial community composition. Ecology, 90(2): 441-451.

Strickland, M.S., Osburn, E., Lauber, C., Fierer, N., Bradford, M.A. 2009. Litter quality is in the eye of the beholder: initial decomposition rates as a function of inoculum characteristics. Functional Ecology 23(3) 627-636.

Ball, B. A., M. D. Hunter, J. S. Kominoski, C. M. Swan, and M. A. Bradford. 2008. Consequences of non-random species loss on decomposition dynamics: Evidence for additive and non-additive effects. Journal of Ecology 96:303-313.

Bradford, M.A., T. Gancos, and C.J. Frost. 2008. Slow-cycle effects of foliear herbivory alter the nitrogen acquistion and population size of Collembola. Soil Biology and Biochemistry 40: 1253-1258

Kominoski, J.S., C.M. Pringle, B.A. Ball, M.A. Bradford, D.C. Coleman, D.B. Hall, and M.D. Hunter. 2007. Nonadditive effects of leaf litter species diversity on breakdown dynamics in a detritus-based stream. Ecology. 88(5): 1167-1176.