College of Agricultural Sciences Personnel Profile
Personnel Photo
Eugene F Kelly
Deputy Director of AES & CAS A
Agricultural Experiment Station
College of Agricultural Sciences

Shepardson Building, Room 121
  • Ph D, University of California; Soils
  • MS, Colorado State University; Agronomy
  • BS, Colorado State University; Range Sciences

Research Interests:
I drifted into Pedology as an activity that involves more of the things that interest me; Chemistry, Physics, Biology, Geology, and Ecology. This discipline of Pedology simultaneously challenges one intellectually, physically and brings one to the field in some of the most beautiful and interesting places imaginable. My research program is directed toward studying the origin and evolution of soils and quantifying the biologically mediated processes of soil formation in many environments around the world. I am interested in being able to evaluate the vulnerability of soils to changing climatic and land use conditions in the context of global and climate change research.

Extension and Outreach:
As the liaison between the university and cooperators in federal, state, local and private sectors, I work at strengthening our capacity for accessing and disseminating soils information. Much of the information about soils that people utilize comes directly out of Soil Surveys published through the National Cooperative Soil Survey (NCSS). I serve on several regional and national advisory committees for the NCSS

Salley, Shawn W, Sleezer, Richard O, Bergstrom, Robert M, Martin, Patrick H, Kelly, Eugene F, (2016) A long-term analysis of the historical dry boundary for the Great Plains of North America: Implications of climatic variability and climatic change on temporal and spatial patterns in soil moisture Geoderma 274 104–113

Crausbay, Shelley Denise, Martin, Patrick H, Kelly, Eugene F, (2015) Tropical montane vegetation dynamics near the upper cloud belt strongly associated with a shifting ITCZ and fire Journal of Ecology 103 4 891–903

Ramirez, K S, Leff, J W, Barberán, A, Bates, S T, Betley, J, Crowther, T W, Kelly, Eugene F, Oldfield, E E, Shaw, E A, Steenbock, C, Bradford, M A, Wall, D H, Fierer, N, (2014) Biogeographic patterns in below-ground diversity in New York City's Central Park are similar to those observed globally. Proceedings. Biological sciences / The Royal Society 281 1795

Giuliani, Amanda L, Kelly, Eugene F, (2013) Geographic variation in growth and Plant Ecology

(2011) "Brown is the New Green" Ft Collins Coloradoan, April

(2011) Environmental Impacts from Recreation on Colorado Fourteeners VDM, Verlag Dr Müller Aktiengesellschaft & Co Publishers, ISBN: 978-3- 844-388091

(2011) "Environmental Impacts from Recreation on Colorado Fourteeners" VDM, Verlag Dr Müller Aktiengesellschaft & Co Publishers, ISBN: 978-3- 844-388091

(2011) "Green Guilt is Good" Ft Collins Coloradoan, March

(2011) Lithologic Controls on Biogenic Silica Cycling in South African Savanna Ecosystems Biogeochemistry, DOI: 10.1007/s10533-011-9602-2

Melzer-Drinnen, Susan E, Kelly, Eugene F, Chadwick, Oliver, (2011) Lithologic controls on biogenic silica cycling in South African savanna ecosystems. Biogeochemistry

(2011) "Living Green, Aiming for Sustainability" Ft Collins Coloradoan, February

(2010) Biodiversity in the dark Nat Geosci 3 297-298

(2010) Fire and grazing impacts on silica production and storage in grass dominated ecosystems Biogeochemistry 97 263-278

Melzer-Drinnen, Susan E, Kelly, Eugene F, Knapp, Alan Keith, Smith, Melinda D, Blair, John, Kirkman, Kevin, (2010) Fire and grazing impacts on silica production and storage in grass dominated ecosystems Biogeochemistry

(2010) Oxygen isotope ratios in Holocene carbonates across a climatic gradient, eastern Washington State, USA Holocene 20 575-583

(2010) Phosphorus biogeochemistry across a precipitation gradient in grasslands of central North America J Arid Environ 74 954-961

(2009) Contingent productivity responses to more extreme rainfall regimes across a grassland biome Global Change Biol 15 2894-2904

(2009) Response of the shortgrass steppe plant community to fire J Arid Environ 73 1136-1143

(2009) The role of mining and agricultural activity in creating coexisting but divergent soils, San Luis Valley, Colorado, USA Geoderma 148 384-391

(2008) Increasing precipitation event size increases aboveground net primary productivity in a semi-arid grassland Oecologia 158 129-140

Heisler-White, J L, Knapp, A K, Kelly, Eugene F, (2008) Increasing precipitation event size increases aboveground net primary productivity in a semi-arid grassland. Oecologia 158 1 129-40

(2007) Assessing the extraction and quantification of amorphous silica in soils of forest and grassland ecosystems Eur J Soil Sci 58 1446-1459

(2007) Precontact vegetation and soil nutrient status in the shadow of Kohala Volcano, Hawaii Geomorphology 89 70-83

(2007) The ratio of germanium to silicon in plant phytoliths Biogeochemistry 86 189-199

Blecker, Steve W, King, Stagg L, Derry, Louis A, Chadwick, Oliver A, Ippolito, Jim, Kelly, Eugene F, (2007) The ratio of germanium to silicon in plant phytoliths: quantification of biological discrimination under controlled experimental conditions Biogeochemistry 86 2 189–199

(2006) Biologic cycling of silica across a grassland bioclimosequence Global Biogeochem Cy 20

(2006) Chemical-structural information from solid-state C-13 NMR studies of a suite of humic materials from a lower montane forest soil, Colorado, USA Geoderma 130 124-140

(2005) Natural variations of delta Si-30 ratios during progressive basalt weathering, Hawaiian Islands Geochim Cosmochim Ac 69 4597-4610

Freeman, Crystal, Ippolito, Jim, Blecker, Steve, Kelly, Eugene F, (2005) Phosphorus Fractionation Chemistry across the Great Plains.

(2005) Regional patterns in carbon cycling across the Great Plains of North America Ecosystems 8 106-121

(2005) The stable carbon isotope composition of soil organic carbon and pedogenic carbonates along a bioclimatic gradient in the Palouse region, Washington State, USA Geoderma 124 37-47

(2004) Effects of afforestation of a paramo grassland on soil nutrient status Forest Ecol Manag 195 281-290

(2004) Silica biogeochemistry in grasslands of mid-continent North America Geochim Cosmochim Ac 68 A414-A414

(2004) Soil organic carbon and water retention following conversion of grasslands to pine plantations in the Ecuadoran Andes Ecosystems 7 729-739

(2003) Halloysite as a kinetically controlled end product of arid-zone basalt weathering Chem Geol 202 461-478

(2003) Solubilization of manganese and trace metals in soils affected by acid mine runoff J Environ Qual 32 1323-1334

(2003) The impact of climate on the biogeochemical functioning of volcanic soils Chem Geol 202 195-223

Green, C H, Heil, D M, Cardon, G E, Butters, Gregory, Kelly, Eugene F, (2003) Solubilization of manganese and trace metals in soils affected by acid mine runoff. Journal of environmental quality 32 4 1323-34

(2002) The delta Si-30 values of soil weathering profiles Geochim Cosmochim Ac 66 A881-A881

(1999) Carbon isotope systematics of monoaromatic hydrocarbons Org Geochem 30 765-775

(1998) Biogeochemistry of isotopes in soil environments Geoderma 82 3-Jan

(1998) Measurement of soil-water delta O-18 values by direct equilibration with CO2 Geoderma 82 255-268

(1998) Oxygen isotopic composition of soil water Geoderma 82 269-293

(1998) Stable isotope composition of soil organic matter and phytoliths as paleoenvironmental indicators Geoderma 82 59-81

(1998) The effect of plants on mineral weathering Biogeochemistry 42 21-53

(1997) Paleopedologic and geomorphic evidence for Holocene climate variation, Shortgrass Steppe, Colorado, USA Geoderma 76 113-130

(1994) Carbon-Dioxide Consumption during Soil Development Biogeochemistry 24 115-127

(1993) A Pedologist Perspective on Soils as Biotic Constructs Favoring Net Primary Productivity - Response Geoderma 57 217-221

(1991) Stable Carbon Isotopic Composition of Carbonate in Holocene Grassland Soils Soil Sci Soc Am J 55 1651-1658

(1988) Profile Reconstruction - a Method to Quantify Changes in Soil Properties Resulting from Cultivation Agr Ecosyst Environ 21 153-162