Education:

1999 Ph.D., Department of Biological Sciences, Stanford University

1993 B.A., Summa Cum Laude. Environmental, Population, and Organismic Biology Department, University of Colorado at Boulder, Colorado

Professional Experience (post-Ph.D):

2003- Present, Assistant Professor, Geological Sciences and Environmental Studies Departments
2002 - Present, Research Ecologist, Earth Surface Processes Team, U.S. Geological Survey, Denver, CO 80225
2000-2001 Mendenhall Postdoctoral Fellow, Earth Surface Processes Team, U.S. Geological Survey, Denver, CO 80225
1999 - Present Scientist, Natural Resource Ecology Laboratory, Colorado State University, Fort Collins, CO and Adjunct Assistant Professor, Soil and Crop Sciences Department, Colorado State University

Professional and Honorary Societies, Committees, Service:

Ecological Society of America Rapid Response Team - Biogeochemistry (2004-), National Center for Ecological Analysis and Synthesis (NCEAS) Science Advisory Board member (2002-2005), EOS Transactions, Biogeosciences Editor (2000-2003), NCEAS Microbes and Ecosystems working group (2003-2004), SCOPE Multiple Element Interactions project (2002), SCOPE Nitrogen project, Working Group 1 (1998-1999), AGU Biogeosciences Steering Committee (1999-2004), ESA Membership Committee (1999-2001), Phi Beta Kappa (1992), American Geophysical Union, Ecological Society of America, Geological Society of America

Fellowships and Awards:

• 2007 Interdisiplinary Teaching in Environmental Science and Residence Life Academic Teaching Awards, CU Boulder
• 2003 Mellon Junior Faculty Fellow in Conservation and the Environment
• 2001 U.S. Geological Survey - Mendenhall Postdoctoral Fellow
• 1997 NASA Earth System Science - Predoctoral Fellow
• 1994 National Science Foundation - Predoctoral Fellow
• 1999 Outstanding Student Paper Award, Spring Meeting, Boston, MA, AGU
• 1998 Editor's citation for excellence in refeering JGR- Atmospheres. AGU
• 1993 Outstanding Student Presentation: AGU, Front Range Meeting

Current Reseach Support:

Mellon Foundation - 2008-2012. Nitrogen inputs and cycling in ecosystems of the Western Cape Province of South Africa.

Mellon Foundation: 2004-2008. The role of essential elements in ecosystem structure and function. PI

NASA: 2005-2008. Regional carbon storage responses to woody encroachment in western pinyon-juniper systems (NASA). Co-PI, Collaborative with Greg Asner (Carnegie) and Nichole Barger (CU).

NSF: 2005-2008. Collaborative Research: Fern Biogeochemistry and Ecosystem Stoichiometry. PI (CU), Collaborative with Vitousek PI (Stanford)

DOE NICCR: 2007-2010. The Role of Boreal and Arctic Soils in Climate Feedbacks; Model Development and Testing

NSF: 2005-2009. Microbial Observatories: Niwot Ridge Alpine Site. Co-PI with Schmidt (PI), Martin (Co-PI) and Guralnik (Co-PI)

USGS - Rocky Mountain Cooperative Ecosystem Study Unit: Geoecology of the Colorado Plateau

NSF. 2004-2008. Niwot Ridge LTER

Past Reseach Support:

NSF - OPP/RAISE: 2001-2005. Collaborative research, a measurement program in Siberia to assess disturbance-driven changes in arctic carbon balance. Co-PI, Collaborative with Jim Randerson (UC Irvine) and Terry Chapin (UAF)

NASA: 2004-2007. The role of Africa in terrestrial carbon exchange and atmospheric CO2: Reducing regional to global uncertainty in the carbon cycle. Co-PI, Collaborative with Niall Hanan (CSU).

Publications (see the publications page for pdfs):

In Review

C.R. Lawrence, and J.C. Neff. In Review. The physical and chemical flux of eolian dust across the landscape: A synthesis of observations and an evaluation of spatial patterns. Chemical Geology.

C.R. Lawrence, J.C. Neff and J.P. Schimiel. In Review. Does adding microbial mechanisms of decomposition improve soil organic matter models? A comparison of four models using data from a pulsed rewetting experiment. Soil Biology and Biochemistry.

J.C. Neff, N.N. Barger, W.T. Baisden, D.P. Fernandez, and G.P. Asner. In Review. Soil carbon storage responses to expanding pinyon-juniper populations in Southern Utah. Ecological Applications.

D.R. Nemergut, A.R. Townsend, S.R. Sattin, K. Freeman, N. Fierer, J.C. Neff, W.D. Bowmand, C.W. Schadt, M.N. Weintraub, and S.K. Schmidt. In Review. The effects of chronic nitrogen fertilization on alpine tundra soil microbial communities: implications for carbon and nitrogen cycling. Environmental Microbiology

A.S. Grandy, R.L. Sinsabaugh, J.C. Neff, M. Sturstova, and D.R. Zak. In Review. Molecular carbon chemistry and enzyme activities in soil fractions: ecosystem specific responses to N fertilization. Biogeochemistry.

Z. Fan, J.C. Neff, J. Harden, and K.P. Wickland. In Review. Boreal soil carbon dynamics under a changing climate: a model inversion approach. JGR - Biogeosciences.

S.C. Castle, J.C. Neff. In Review. Plant response to nutrient availability across variable bedrock geologies. Ecosystems.

Huang, C., G.P. Asner, R. Martin, N.Barger, and J.C. Neff. In Review. Multi-Scale Analysis of Tree Cover and Aboveground Biomass in Pinyon-Juniper Woodlands of the Colorado Plateau, USA. Ecological Applications.

2008

J.C. Neff, A.P. Ballantyne, G.L. Famer, N.M. Mahowald, J.L. Conroy, C.C. Landry, J.T. Overpeck, T.H. Painter, C.R. Lawrence, and R.L. Reynolds.(2008). Recent increase in eolian dust deposition related to human activity in the Western United States. Nature - Geosciences.

K.P. Wickland and J.C. Neff (2008). Decomposition of black spruce forest soils: environmental and chemical controls. Biogeochemistry. 10.1007/s10533-007-9166-3.

Grandy, A.S., and J.C. Neff. (2008). Molecular C Dynamics Downstream: The Biochemical Decomposition Sequence and its Impact on Soil Organic Matter Structure and Function. Science of the Total Environment. doi:10.1016.j.scitotenv.2007.11.013

Goldstein, H.L., Reynolds, R.L., Reheis, M.C., Yount, J.C., and Neff, J.C. (2008). Compositional trends in eolian dust along a transect across the southwestern United States. Journal of Geophysical Research, Earth Surface.doi:10.1029/2007JF000751

2007

Fernandez, D.P., J.C. Neff, R.L. Reynolds. (2007). Biogeochemical and ecological impacts of livestock grazing in semi-arid Southeastern Utah, USA, Journal of Arid Environments. doi:10.1016/j.jaridenv.2007.10.009

Prior, C.A., W.Troy Baisden, F. Bruhn, and J.C. Neff. (2007). Identifying the optimal soil fractions for modeling soil carbon dynamics in New Zealand.Radiocarbon 49 (2) 1093-1102

C. Wiedinmyer and J.C. Neff. (2007). Estimates of CO2 from fires in the United States: Implications for Carbon Management. Carbon Balance and Management. 2:10

K.P. Wickland, J.C. Neff and G.R. Aitken. (2007). Dissolved organic carbon in the boreal forest: Sources, Chemistry and Biodegradability. Ecosystems. DOI:10.1007/s10021-007-9101-4.

Williams, C.A., N.P. Hanan, J.C. Neff, R.J.Scholes, J. Berry, A.S. Denning, and D.F. Baker. (2007) Africa and the global carbon cycle. Carbon Balance and Management. 2:3

T. H. Painter, A. P. Barrett, C. C. Landry, J. C. Neff, M. P. Cassidy, C. R. Lawrence, K. P. Thatcher, L. Farmer. (2007) Impact of disturbed desert soils on duration of mountain snowcover. Geophysical Research Letters. V34, 12, L12502, 10.1029/2007GL030208.

A.S. Grandy, J.C. Neff and M.N. Weintraub. (2007). Carbon structure and enzyme activities in alpine and forest ecosystems. Soil Biology and Biochemistry. v39: 2701-2711.

2006

Neff, J.C., J. Finlay, S.A. Zimov, S. Davydov, J.J. Carrasco, E.A.G. Schuur, A. Davydova. (2006) Seasonal changes in the age and structure of dissolved organic carbon in Siberian Rivers and streams. Geophysical Research Letters. 33(23), L23401, 10.1029/2006GL028222.

Chapin, F.S. III, G.M Woodwell, J.T. Randerson, G.M. Lovett, E.B. Rastetter, D.D. Baldocchi, D.A. Clark, M.E. Harmon, D.S. Schimel, R. Valentini, C. Wirth, J.D. Aber, J.J. Cole, M.L. Goulden, J.W. Harden, M. Heimann, R.W. Howarth, P.A. Matson, A.D. McGuire, J.M. Melillo, H.A. Mooney, J.C. Neff, R.A. Houghton, M.L. Pace, M.G. Ryan, S.W. Running, O.E. Sala, W.H. Schlesinger, E.-D. Schulze.  (2006) Reconciling Carbon Cycle Concepts, Terminology, and Methodology. Ecosystems, 10.1007/s10021-005-0105-7, 9(7): 1041-1050.

Randerson, J.T., H. Liu, M.G. Flanner, S.D. Chambers, Y. Jin, P.G. Hess, G. Pfister, M.C. Mack, K.K. Treseder, L.R. Welp, F.S. Chapin, J.W. Harden, M.L. Goulden, E. Lyons, J.C. Neff, E.A.G. Schuur, C.S. Zender. (2006). The Impact of Boreal Forest Fire on Climate Warming. Science V314 (5802).

Dutta, K., E.A.G. Schuur, J.C. Neff, and S.A. Zimov. (2006) Potential carbon release from permafrost soils of Northeastern Siberia, Global Change Biology.Published article online: 25-Oct-2006. doi: 10.1111/j.1365-2486.2006.01259.x

Harden J. W. , K. L. Manies, M.R. Turetsky, and J. C. Neff. (2006) Effects of wildfire and permafrost on soil organic matter and soil climate in interior Alaska. Global Change Biology. Published article online: 18-Oct-2006. doi: 10.1111/j.1365-2486.2006.01255.x

Neff J.C. , R. Reynolds, R.L. Sanford, Jr., D. Fernandez and P. Lamothe. (2006) Controls of bedrock geochemistry on soil and plant nutrients in Southeastern Utah.  Ecosystems, 9:879-893.1007/s10021-005-0092-8

Reynolds, R.L., M.C. Reheis, J.C. Neff, H. Goldstein, and J. Yount.  (2006) Late Quaternary eolian dust in surficial deposits of a Colorado Plateau Grassland:  Controls on distribution and ecologic effects.  Catena v66(3), 251-266

Wickland, K. P., R. G. Striegl, J. C. Neff, and T. Sachs (2006), Effects of permafrost melting on CO2 and CH4 exchange of a poorly drained black spruce lowland, J. Geophys Res., 111, G02011, doi:10.1029/2005JG000099.

Finlay J. , J.C. Neff, S. Zimov, A. Davydova, and S. Davydov. (2006) Snowmelt dominance of dissolved organic carbon in high-latitude watersheds: implications for characterization and flux of river DOC. Geophysical Research Letters. Vol. 33, No. 10, L10401

Carrasco, J.J., J.C. Neff, and J.W. Harden. Modeling the long term accumulation of carbon in boreal soils. (2006)Journal of Geophysical Research – Biogeosciences, 111, G02004, doi:10.1029/2005JG000087

Fernandez D. P., J.C. Neff, J. Belnap, and R. L. Reynolds. (2006) Soil respiration in a cold desert environment: abiotic regulators and thresholds. Biogeochemistry. 78(3): 247-265

Rosenbloom N.A. , J. W. Harden, J. C. Neff, and D. S. Schimel (2006), Geomorphic control of landscape carbon accumulation, J. Geophys. Res., 111, G01004, doi:10.1029/2005JG000077.

Reynolds R., J.C. Neff, M. Reheis, and P. Lamothe. Atmospheric dust in modern soil on aeolian sandstone, Colorado Plateau (USA): Variation with landscape position and contribution to potential plant nutrients. Geoderma 130:108-123

2005

Parton W.J., J.C. Neff and P.M. Vitousek , Modeling phosphorus dynamics in terrestrial ecosystems. 2005. In Organic Phosphorus and the Environment ( BL Turner, E Frossard, ETH Lindau, DS Baldwin eds) Oxford University Press. 350 pages. pp 325-347

Neff J.C., R. Reynolds, J. Belnap, and P. Lamothe. 2005. Multi-decadal impacts of grazing on soil physical and biogeochemical properties in Southeast Utah. Ecological Applications, v15 (1), 87-95

Neff J.C., J.W. Harden, and G. Gleixner. Fire effects on soil organic matter content and composition in boreal interior Alaska. 2005. Canadian Journal of Forest Research. 35(9): 2178-2187

2004

Cleveland C.C., J.C. Neff, A.R. Townsend, & E. Hood. 2004 Composition, dynamics, and fate of leached dissolved organic matter in terrestrial ecosystems: Results from a decomposition experiment. Ecosystems. 7:275-285

Harden, J. W.; Neff, J. C.; Sandberg, D. V.; Turetsky, M. R.; Ottmar, R.; Gleixner, G.; Fries, T. L.; Manies, K. L. Chemistry of burning the forest floor during the FROSTFIRE experimental burn, interior Alaska, 1999 Global Biogeochem. Cycles, Vol. 18, No. 3, GB3014 10.1029/2003GB002194 28 August 2004

2003

Ollinger S., G. Ågren,B. Berg, E. Davidson, C. Field,M. Lerdau, J. Neff,O. Sala,M. Scholes, and R. Sterner. (2003) New frontiers in the study of element interactions. In Interactions of the Major Biogeochemical Cycles (Melillo, Field and Moldan eds.). pp 63-91.

Neff J.C.,F.S. Chapin III and P.M. Vitousek. (2003) The role of dissolved organic nitrogen in nutrient retention and plant mineral nutrition; reconciling observations with ecological theory. Frontiers in Ecology and Environmental Science. 1(4): 205-211.

2002

Neff J.C.,A.R. Townsend,G. Gleixner, S. Lehman, J. Turnbull and W. Bowman (2002). Variable effects of nitrogen additions on the stability and turnover of soil carbon. Nature. 419: 915-917

Neff J.C. and D.U. Hooper (2002) Vegetation and climate controls on the potential production of CO2, DOC and DON production in northern latitude soils. Global Change Biology. 8: 872-884.

Neff J.C. , E.A. Holland, F.J. Dentener, W.H. McDowell and K.M.Russel (2002). Atmospheric organic nitrogen; Implications for the global N cycle. Biogeochemistry. 57/58: 99-136.

Randerson J.T., F.S. Chapin III, J.W. Harden , J.C. Neff , and M.E. Harmon (2002) Scaling terrestrial net carbon fluxes:A definition of net ecosystem production (NEP) that includes disturbance and non-CO2 carbon fluxes. Ecological Applications 12(4): 937-947.

Aitkenhead-Peterson J., W.H. McDowell and J.C. Neff (2002). Sources, Production and Regulation of allochthonous dissolved organic matter. In (S. Findlay and R. Sinsabaugh, Eds.), Aquatic Ecosystems, interactivity of dissolved organic matter. Academic Press, Amsterdam, pp 26-70.

2001 and Earlier

Asner G.P., A.R. Townsend, W.J. Riley,P.A. Matson, J.C. Neff and C.C. Cleveland (2001). Physical and biogeochemical controls of terrestrial ecosystem responses to nitrogen deposition. Biogeochemistry 54: 1-39

Neff J.C. and G.P. Asner. (2001) Dissolved organic carbon in terrestrial ecosystems: Synthesis and a model. Ecosystems. 4(1): 29-48

Holland E.A., J.C. Neff, A.R. Townsend & R. McKeown. (2001). Variability in the temperature response of decomposition in sub-tropical and tropical soils. Global Biogeochemical Cycles.14(4): 1137-1153

Neff J.C., S.E. Hobbie and P.M. Vitousek.(2000) Controls over the production and stoichiometry of dissolved organic carbon, nitrogen and phosphorus in tropical soils. Biogeochemistry, 51 (3):283-302

Silver W., J.C. Neff,E. Veldkamp, M. McGroddy, & M. Keller (2000) Patterns in soil chemical properties and root biomass along a soil texture gradient in a lowland Amazonian tropical forest. Ecosystems, 003(02): 0193-0209

Vitousek P.M., P.A. Matson, L.O. Hedin, J. Fownes & J.C. Neff (1998). Within-system element cycles, input-output budgets and nutrient limitation. In (P. Groffman and M. Pace, Eds.), Successes, Limitations and Frontiers in Ecosystem Ecology. Springer-Verlag, Berlin.

Weitz A., E. Veldkamp, M. Keller, J.C. Neff and P. Crill. (1998). Nitrous Oxide, Nitric Oxide and Methane Fluxes from Soils Following Clearing and Burning of Tropical Secondary Forest, Journal of Geophysical Research

Neff J.C., M. Keller, E.A. Holland, A. Weitz & E. Veldkamp (1995) Fluxes of nitric oxide from soils following the clearing and burning of a secondary tropical rain forest. Journal of Geophysical Research, Atmospheres, 100(D12) 25,913-25,922.

Neff J.C., W. Bowman,E.A. Holland, M. Fisk & S. Schmidt (1994) Fluxes of nitrous oxide and methane from nitrogen amended soils in a Colorado alpine ecosystem. Biogeochemistry, 27:23- 33.

Other Publications

Neff, J.C. and L.O. Hedin (2002). Building a Home for the Biogeosciences: Challenges for Understanding Terrestrial Ecosystems. EOS 83: 165-166.

Gurney K.R. and J. Neff, "Carbon Sequestration Potential in Canada, Russia, and the United States Under Article 3.4 of the Kyoto Protocol," World Wildlife Fund, June 2000.

Neff J.C. (1996). Regulating nitrogen oxide emissions. In Elements of Change. Aspen Global Change Institute (S.J. Hassol and J. Katzenberger eds.). P 239-240.