Degrees/Diplomas: University of California, Davis, CA (1996-2001) PhD, Soil Biogeochemistry 2001; University of Vermont, Burlington, VT (1990-1992) MS, Plant and Soil Science 1992; Cornell University, Ithaca, NY (1987-1989) BS with honors, Soil Science 1989
Research Interests: soil science; terrestrial biogeochemistry; soil microbiology; plant-microbial interactions; pyrogenic organic matter; soil organic matter stabilization; ecosystem ecology; organic matter-mineral interactions; stable isotopes; carbon cycling; climate change; N cycling; carbon sequestration
Professor Bird’s biogeochemistry research group is focused on belowground C, N and S cycling in terrestrial ecosystems. Soils are critical controllers on the flow of matter and energy in the environment and are considered especially important in the Earth's response to Global Climate Change. Soils act as both a significant source of atmospheric greenhouse gases (i.e., carbon dioxide, methane and nitrous oxide) and as a sizable stable sink for plant C and N inputs.
Bird's research group investigates how soil microbial communities, plants, climate and mineralogy interact to control the turnover, loss or stabilization of soil C and N in temperate and tropical ecosystems. The Bird lab uses stable isotopic tracers (13C and 15N) to follow C and N among plants, soil microbes, and mineral surfaces to better understand how soils support ecological productivity and environmental quality.
Hatton, P.J., C. Castanha, M.S. Torn, J.A. Bird. 2015. Litter type control on soil C and N stabilization dynamics in a temperate forest. Global Change Biology 21:1358–1367, doi: 10.1111/gcb.12786
Throckmorton, H., J.A. Bird, N. Monte, T. Doane, M.K. Firestone, W.R. Horwath. 2015. The soil matrix increases microbial C stabilization in temperate and tropical forest soils. Biogeochemistry 122:35–45. doi. 10.1007/s10533-014-0027-6
Maestrini, B., S. Abiven, N. Singh, J.A. Bird, M.S. Torn, M.W.I. Schmidt. 2014. Carbon losses from pyrolysed and original wood in a forest soil under natural and increased N deposition. Biogeosciences 11: 5199–5213. doi. 10.5194/bg-11-5199-2014
Singh, N., S. Abiven, B. Maestrini, J.A. Bird, M.S. Torn, M.W.I Schmidt. 2014. Transformation and stabilization of pyrogenic organic matter in a temperate forest field experiment. Global Change Biology 20:1629–1642. doi. 10.1111/gcb.12459
Throckmorton, H., J.A. Bird, L. Dane, M.K. Firestone, W.R. Horwath. 2012. The source of microbial C has little impact on soil organic matter stabilization in forest ecosystems. Ecology Letters 15: 1257–1265 doi. 10.1111/j1461-0248. 2012.01848.x