Instructor, Oregon State University
PhD, Ecology, Duke University, 2011
My dissertation investigated the dynamics of dead plant carbon over fifty years of old-field forest development at the Calhoun Long Term Soil-Ecosystem Experiment (LTSE) in South Carolina. Earth’s ecosystems provide many services to mitigate the effects of global change, such as taking up half of human CO2 emissions and limiting the climate warming caused by this added CO2. Yet ecosystems do not have infinite capacity to provide these services. My research focuses changes in ecosystem services that result from human disturbances I ask questions like: How long can an ecosystem take up additional CO2 from the atmosphere, or additional anthropogenic nutrients from the soil? How much of these added nutrients will they take up before they saturate and/or become limited by another nutrient or environmental factor? How do other human disturbances, such as land use change or energy development, affect these capacities?
How to estimate statistically detectable trends in a time series: A study of soil carbon and nutrient concentrations at the Calhoun LTSE. Mobley, M.L., Y. Yang, R.D. Yanai, K.A. Nelson, A.R. Bacon, P.R. Heine, and D.D. Richter (2019): Soil Science Society of America Journal
Boom and bust carbon-nitrogen dynamics during reforestation. Parolari, A.J., M.L. Mobley, A.R. Bacon, G.G. Katul, D.deB. Richter, and A. Porporato (2017): Ecological Modelling 360: 108-119
Surficial gains and subsoil losses of soil carbon and nitrogen during secondary forest development. Mobley, Megan L., Kate Lajtha, Marc G. Kramer, Allan R. Bacon, Paul R. Heine and Daniel deB. Richter (2015): Global Change Biology 21(2): 986-996
Soil in the Anthropocene. Richter D. deB, Bacon A.R, Brecheisen Z., & Mobley M.L. (2015): IOP Conference Series: Earth and Environmental Science, 25: 012010
Evolution of Soil, Ecosystem, and Critical Zone Research at the USDA FS Calhoun Experimental Forest. Richter, D. deB., A.R. Bacon, S.A. Billings, D. Binkley, M. Buford, M.A. Callaham, A.E. Curry, R.L. Fimmen, A. S. Grandy, P.R. Heine, M. Hofmockel, J.A. Jackson, E. LeMaster, J. Li, D. Markewitz, M.L. Mobley, M.W. Morrison, M.S. Strickland, T. Waldrop, and C. G. Wells (2014): In: USDA Forest Service Experimental Forests and Ranges: Research for the Long Term, Chapter: 18, Publisher: Springer Verlag, Editors: D.C. Hayes, S.L. Stout, R.H. Crawford, A.P. Hoover, pp. 405-433
Accumulation and decay of woody detritus in a humid subtropical secondary pine forest. Mobley, Megan L., Daniel deB. Richter, and Paul R. Heine (2013): Canadian Journal of Forest Research 43: 109–118
Human-soil relations are changing rapidly: Proposals from SSSA's cross-divisional soil change working group. Richter, DD; Bacon, AR; Mobley, LM; Richardson, CJ; Andrews, SS; West, L; Wills, S; Billings, S; Cambardella, CA; Cavallaro, N; DeMeester, JE; Franzluebbers, AJ; Grandy, AS; Grunwald, S; Gruver, J; Hartshorn, AS; Janzen, H; Kramer, MG; Ladha, JK; Lajtha, K; Liles, GC; Markewitz, D; Megonigal, PJ; Mermut, AR; Rasmussen, C; Robinson, DA; Smith, P; Stiles, CA; Tate, RL; Thompson, A; Tugel, AJ; Es, HV; Yaalon, D; Zobeck, TM (2011): Soil Science Society of America Journal 75(6): 2079-2084
Monitoring Earth's Critical Zone. Richter, Daniel deB., Jr., and Mobley, Megan L. (2009): Science 326(5956): 1067-1068
Papers and books that explicitly acknowledge a CZO grant are highlighted in PALE ORANGE.
Detecting change over time with depth in forest soils: an example from the Calhoun Critical Zone Observatory, USA. Mobley, Megan, Kevin Nelson, Daniel Richter, Ruth Yanai (2018): North American Forest Soils Conference – International Symposium on Forest Soils, Quebec City, Quebec, Canada, June 10-16, 2018
Decadal restructuring of soil carbon and nitrogen in a regenerating forest on long cultivated land in the southern piedmont of the USA. Richter, Daniel, Megan Mobley, Sharon Billings, Daniel Markewitz, Anna Wade (2018): North American Forest Soils Conference – International Symposium on Forest Soils, Quebec City, Quebec, Canada, June 10-16, 2018
Rapid turnover and minimal accretion of mineral soil carbon during 60-years of pine forest growth on previously cultivated land. Richter, D., M.L. Mobley, S.A. Billings, and D. Markewitz (2016): American Geophysical Union 2016 Fall Meeting, San Francisco, CA
An Ecosystem Approach to Dead Plant Carbon over 50 years of Old-Field Forest Development. Mobley, Megan Leigh (2011): PhD Dissertation, Duke University, Durham, North Carolina