Goeke JA, Boutton TW, Armitage AR. 2024. A foundation species shift causes a partial loss of functional support in coastal consumers. Estuaries and Coasts 47(5): https://doi.org/10.1007/s12237-024-01389-w

Hsiao CJ, Leite PAM, Hyodo A, Boutton TW.   2024.  Soil carbon, nitrogen, and phosphorus storage in juniper-oak savanna: Role of vegetation and geology.  SOIL 10: 93–108.  doi.org/10.5194/soil-10-93-2024

Mushinski RM, Zhou Y, Hyodo A, Casola C, Boutton TW.   2024.  Interactions of long-term grazing and woody encroachment can shift soil biogeochemistry and microbiomes in savanna ecosystems.  Geoderma 441: 116733, doi.org/10.1016/j.geoderma.2023.116733

Zhou Y, Bomfim B, Bond WJ, Boutton TW, Case MF, Coetsee C, Davies AB, February EC, Gray EF, Silva LCR, Wright JL, Staver AC.  2023.  Soil carbon in tropical savannas mostly derived from grasses.  Nature Geoscience  16: 710-716.

Jesmin T, Mulvaney RL, Boutton TW.  2023.  Residue- and nitrogen-induced carbon mineralization varies with fertility status.  Soil Science Society of America Journal  87: 541-554.

McDonald MD, Lewis KL, DeLaune PB, Hux B, Boutton TW, Gentry TJ.  2023.  Nitrogen fertilizer driven nitrous and nitric oxide production is decoupled from microbial genetic potential in low carbon, semi-arid soil.  Frontiers in Soil Science 2: 1050779.  doi: 10.3389/fsoil.2022.1050779

Zhang Q, Boutton TW, Hsiao CJ, Mushinski RM, Wang L, Bol R, Klumpp E.  2023. Soil colloidal particles in a subtropical savanna: Biogeochemical significance and influence of anthropogenic disturbances.  Geoderma 430: 116282, doi.org/10.1016/j.geoderma.2022. 116282.

Bekewe P, Foster J, Neely C, Neely HL, Lewis K, Tomlin LE, Schnell RW, Smith AP, Boutton TW, Gerrish B.  2022.  Cropping system diversity and tillage intensity affects wheat productivity in Texas.  Agronomy Journal  114: 3498-3514.

Hines SL, Fulbright TE, Alfonso-Ortega J, Wester DB, Hewitt DG, Boutton TW, Campbell T.   2022. Quantifying herbivory in heterogenous environments: methodological considerations for more accurate metrics.  Journal of Arid Environments 199: 104698;  https://doi.org/10.1016/j.jaridenv.2021.104698.

Kjeldgaard MK, Eyer PA, McMichael CC, Bockoven AA, King JT, Hyodo A, Boutton TW, Vargo EL, Eubanks MD.   2022.  Distinct colony boundaries and larval discrimination in polygyne red imported fire ants (Solenopsis invicta).  Molecular Ecology  31: 1007-1020.

Ansley RJ, Boutton TW, Hollister EB.  2021.  Can prescribed fires restore C₄ grasslands invaded by a C₃ woody species and a co-dominant C₃ grass species?  Ecosphere 12: e03885. 10.1002/ecs2.3885.

McDonald MD, Lewis KL, DeLaune PB, Boutton TW, Reed JD, Gentry TJ.   2021.  Nitrous oxide consumption potential in a semi-arid agricultural system: Effects of conservation soil management and nitrogen timing on nosZ mediated N₂O consumption.  Frontiers in Environmental Science 9: 702806. doi: 10.3389/fenvs.2021.702806.

Zhou Y, Taylor RJ, Boutton TW.  2021. Divergent patterns and spatial heterogeneity of nutrients in a complex and dynamic savanna landscape.  Journal of Geophysical Research: Biogeosciences 126: e2021JG006575. https://doi.org/10.1029/2021JG006575

Zhou Y, Hyodo A, Boutton TW.   2021.  Ecosystem sulfur accumulation following woody encroachment drives a more open S-cycle in a subtropical savanna.  Biogeochemistry  155: 343-355.

Innocenti RA, Feagin RA, Charbonneau BR, Figlus J, Wengrove M, Lomonaco P, Puleo J, Huff TP, Rafiti Y, Hsu T, Tsai B, Boutton TW, Pontiki M, Smith J, Moragues MV. 2021. The effects of plant structure and fluid properties on the physical response of coastal foredune plants to wind and wave run-up.  Estuarine, Coastal, and Shelf Science 261: 107556; doi: 10.1016/j.ecss.2021.107556.

Hines SL, Fulbright TE, Ortega JA, Webb SL, Hewitt DG, Boutton TW.  2021.   Compatibility of dual enterprises for cattle and deer in North America: A quantitative review.  Rangeland Ecology and Management 74: 21-31.

Deshpande A, Boutton TW, Lafon C, Moore G.  2020. Bottomland hardwood forest growth and stress response to hydroclimatic variation: Evidence from dendrochronology and tree-ring Δ¹³C values.  Biogeosciences 17: 5639-5653.

Torres Z, Mora MA, Boutton TW, Morrow M.   2020.  Diet sources of the endangered Attwater’s prairie-chicken in Texas: Evidence from δ¹³C, δ¹⁵N, and Bayesian mixing models.  Ecosphere 11(10): e03269. 10.1002/ecs2.3269.

Adams RE, Hyodo A, SantaMaria T, Wright CL, Boutton TW, West JB.  2020.  Bound and mobile soil water isotope ratios are affected by soil texture and mineralogy while extraction method influences their measurement.  Hydrological Processes 34: 991-1003.

Veldman JW, Aleman JC, Alvarado ST, Anderson TM, Archibald S, Bond WJ, Boutton TW, Buchmann N, Buisson E, Canadell JG, Dechoum M, Diaz-Toribio MH, Durigan G, Ewel JJ, Fernandez GW, Fidelis A, Fleischman F, Good SP, Griffith DM, Hermann JM, Hoffmann WA, Le Stradic S, Lehmann CER, Mahy G, Nerlekar A, Nippert JB, Noss RF, Osborne CP, Overbeck GE, Parr CL, Pausas JG, Pennington RT, Perring MP, Putz FE, Ratnam J, Sankaran M, Schmidt IB, Schmitt CB, Silveira FAO, Staver CA, Stevens N, Still CJ, Stromberg CAE, Temperton VM, Varner JM, Zaloumis NP.   2019.  Comment on the global tree restoration potential.  Science 366 (6463): doi: 10.1126/science.aay7976.

Zhou Y, Watts SE, Boutton TW, Archer SR.   2019.  Root density distribution and biomass allocation of co-occurring woody plants on contrasting soils in a subtropical savanna parkland.  Plant and Soil  438: 263-279.

Mushinski RM, Boutton TW, Gentry T.   2019.  Forest organic matter removal leads to long-term reductions in bacterial and fungal abundance.  Applied Soil Ecology 137: 106-110.

Hyodo A, Malghani S, Zhou Y, Mushinski RM, Toyoda S, Yoshida N, Boutton TW, West JB.   2019.  Biochar amendment suppresses N₂O emissions but has no impact on ¹⁵N site preference in an anaerobic soil.  Rapid Communications in Mass Spectrometry 33: 165-175.

Zhou Y, Boutton TW, Wu XB.  2019.  A three-dimensional assessment of soil δ¹³C in a subtropical savanna: Implications for vegetation change and soil carbon dynamics.  Soil Systems 3: 73; doi: 10.3390/soilsystems3040073.

Ahmed I, Karim A, Boutton TW, Strom KB.  2019.  On the prediction of uncertainty in a sediment provenance model.  Research and Advances: Environmental Sciences 1: 45-60.

Zhou Y, Boutton TW, Wu XB.   2018.  Soil phosphorus does not keep pace with soil carbon and nitrogen accumulation following woody encroachment.  Global Change Biology 24: 1992-2007.

Zhou Y, Boutton TW, Wu XB.  2018.  Woody plant encroachment amplifies spatial heterogeneity of soil phosphorus to considerable depth.  Ecology  99: 136-147.

Zhou Y, Boutton TW, Wu XB.   2018.  Soil C:N:P stoichiometry response to vegetation change from grassland to woodland.  Biogeochemistry  140: 341-357.

Mushinski RM, Gentry T, Boutton TW.   2018.  Organic matter removal associated with forest harvest leads to decade-scale alterations in soil fungal communities and functional guilds.  Soil Biology and Biochemistry  127: 127-136.

Zhou Y, Boutton TW, Wu XB, Wright C, Dion A.  2018.  Rooting strategies in a subtropical savanna: a landscape scale three-dimensional assessment.  Oecologia  186: 1127-1135.

Zhou Y, Mushinski RM, Hyodo A, Wu XB, Boutton TW.  2018.  Vegetation change alters soil profile δ¹⁵N values at the landscape scale.  Soil Biology and Biochemistry 119:  110-120.

Mushinski RM, Gentry T, Zhou Y, Boutton TW.   2018.  Bacterial metataxonomic profile and putative functional behavior associated with C and N cycle processes remain altered for decades after forest harvest.  Soil Biology and Biochemistry  119: 184-193.

Bai E, Wang H, Hu G, Xu W, Boutton TW, Zhuge Y.   2018.  Effects of nitrogen addition on soil organic carbon mineralization after maize stalk addition.  European Journal of Soil Biology 89: 33-38.

Hinson AL, Feagin RA, Eriksson M, Najjar RG, Herrmann M, Windham-Myers L, Bianchi TS, Holmquist JR, Kroeger KD, Gonneea M, Kemp M, Hutchings JA, Crooks S, Boutton TW.   2017.  The spatial distribution of soil organic carbon in tidal wetland soils of the continental United States.  Global Change Biology 23: 5468-5480.

Lewis KL, Foster JL, Hons FM, Boutton TW.   2017.  Initial aggregate formation and soil carbon storage from lipid-extracted algae amendment. AIMS Environmental Science 4: 743-762.

Zhou Y, Boutton TW, Wu XB.  2017.  Soil carbon response to woody plant encroachment: Importance of spatial heterogeneity and deep soil storage.  Journal of Ecology  105: 1738–1749.

Mushinski RM, Gentry TJ, Dorosky RJ, Boutton TW.  2017.  Forest harvest intensity and soil depth alter inorganic nitrogen pool sizes and ammonia oxidizer community composition.  Soil Biology and Biochemistry 112: 216-227.

Mushinski RM, Boutton TW, Scott DA.  2017.  Decadal-scale changes in forest soil carbon and nitrogen storage are influenced by organic matter removal during timber harvest.  Journal of Geophysical Research-Biogeosciences 122:  846–862.

Zhou Y, Boutton TW, Wu XB, Yang C.   2017.  Spatial heterogeneity of subsurface soil texture drives landscape-scale patterns of woody patches in a subtropical savanna.  Landscape Ecology  32: 915–929.

Creamer CA, Filley TR, Boutton TW, Rowe H.  2016.  Grassland to woodland transitions: Dynamic response of microbial community structure and carbon use patterns.  Journal of Geophysical Research-Biogeosciences 121: 1675-1688.

Soper FM, Boutton TW, Groffman PM, Sparks JP.  2016.  Nitrogen trace gas fluxes from a semi-arid subtropical savanna under woody legume encroachment.  Global Biogeochemical Cycles 30: 614-628.

Pyle LA, Hockaday WC, Boutton TW, Zygourakis K, Kinney TJ, Masiello CA. 2015. Chemical and isotopic thresholds in charring: Implications for the interpretation of charcoal mass and isotopic data.  Environmental Science & Technology 49: 14057-14064.

Foote JA, Boutton TW, Scott DA. 2015.  Soil C and N storage and microbial biomass in US southern pine forests: Influence of forest management.  Forest Ecology and Management 355: 48-57.

Wang H, Boutton TW, Xu W, Hu G, Jiang P, Bai E.  2015.  Quality of fresh organic matter affects priming of soil organic matter and substrate utilization patterns of microbes.  Scientific Reports 5:10102, doi: 10.1038/srep10102

Kulawardhana RW, Feagin RA, Popescu SC, Boutton TW, Yeager KM, Bianchi TS.  2015.  The role of elevation and relative sea-level history in determining carbon distribution in Spartina alterniflora dominated salt marshes.  Estuarine, Coastal, and Shelf Science 154: 48-57.

Soper FM, Boutton TW, Sparks JP.  2015.  Investigating patterns of symbiotic nitrogen fixation during vegetation change from grassland to woodland using fine scale δ¹⁵N measurements.  Plant, Cell and Environment 38: 89-100.

Karim A, Ahmed I, Boutton TW, Strom KB, Fox JF.  2015.  Quantification of uncertainty in sediment provenance models.  IN:  World Environmental and Water Resources Congress:  Floods, Droughts, and Ecosystems, pp. 1790-1799, K Karvazy and VL Webster, Eds.  American Society of Civil Engineers, Reston, VA.

Scott A, Eaton B, Foote J, Vierra B, Blank G, Boutton T, Johnsen K. 2014.  Soil ecosystem services in loblolly pine plantations 15 years after harvest, compaction, and vegetation control.  Soil Science Society of America Journal 78: 2032-2040.

Ansley RJ, Boutton TW, Jacoby PW.  2014.  Root biomass and distribution patterns in a semi-arid mesquite savanna:  Responses to long-term rainfall manipulation.   Rangeland Ecology and Management  67: 206-218.

Dou F, Hons FM, Wright AL, Boutton TW, Yu X.  2014.  Soil carbon sequestration in sorghum cropping systems: Evidence from stable isotopes and aggregate size fractionation.  Soil Science 179: 68-74.

Ahmed I, Boutton TW, Karim A, Strom KB, Fox JF.  2014.  Monitoring soil organic carbon loss via erosion using stable isotopes.  IN:  Soil Carbon Sequestration for Climate, Food Security, and Ecosystem Services, pp. 130-138, G Halldorsson, F Bampa, AB Thorsteinsdottir, BD Sigurdsson, L Montanarella, A Arnalds, Eds.  JRC Science and Policy Reports, European Union, Luxembourg.

Liu F, Archer SR, Bai E, Boutton TW, Wu XB, Gelwick F.  2013.  Woody plant encroachment into grasslands: Spatial patterns of functional group distribution and community development.   PLoS ONE  8(12): e84364. doi:10.1371/journal.pone.0084364 .

Bai E, Boutton TW, Liu F, Wu XB, Archer SR.  2013.  ¹⁵N isoscapes in a subtropical savanna parkland: Role of topography and vegetation dynamics.  Ecosphere 4(1):4. http://dx.doi.org/10.1890 /ES12-00187.1

Creamer CA, Filley TR, Olk DC, Stott DE, Boutton TW, Dooling V.  2013.  Changes to soil organic N dynamics with leguminous woody plant encroachment into grasslands.   Biogeochemistry 113: 307-321.

Creamer CA, Filley TR, Boutton TW.  2013.  Long-term incubations of size-separated soil fractions to inform soil organic carbon decay dynamics.   Soil Biology and Biochemistry 57: 496-503.

Creamer CA, Filley TR, Olk DC, Plante AF, Peltre C, Top SM, Boutton TW.  2012.  Degree of woody encroachment into grasslands controls soil carbohydrate and amino compound changes during long term laboratory incubation.  Organic Geochemistry 52: 23-31.

Hall SA, Boutton TW, Lintz CR, Baugh TG.  2012.  New correlation of stable carbon isotopes with changing late-Holocene fluvial environments in the Trinity River basin of Texas, USA.   The Holocene  22: 541-549.

Bai E, Boutton TW, Liu F, Wu XB, Archer SR, Hallmark CT.  2012.  Spatial variation of soil δ¹³C and its relation to carbon input and soil texture in a subtropical lowland woodland.  Soil Biology and Biochemistry 44: 102-112.

Bai E, Boutton TW, Liu F, Wu XB, Archer SR.  2012.  Spatial patterns of soil δ¹³C reveal grassland-to-woodland successional processes.  Organic Geochemistry 42: 1512-1518.

Liu F, Wu XB, Bai E, Boutton TW, Archer SR.  2012.  Impact of woody proliferation on soil carbon in a subtropical savanna: Spatial distribution, uncertainty and sampling strategy.  IN: Ecological Vision: Challenge, Response and Strategy,  X Han and Y Wu, Eds.  Higher Education Press, Beijing.

Creamer C, Filley T, Kantola I, Boutton TW.  2011.  Controls on soil carbon accumulation during woody plant encroachment into grasslands: Evidence from physical fractionation, soil respiration, and the isotopic composition of respired CO₂.  Soil Biology and Biochemistry43: 1678-1687.

Liu F, Wu XB, Bai E, Boutton TW, Archer SR.  2011.  Quantifying soil organic carbon in complex landscapes.  Global Change Biology  17: 1119-1129.

Morgun EG, Boutton TW, Jessup KD.  2010. Assessment of the mobility and time of renewal of the densimetric fractions of organic matter in chestnut soils from the ratio of stable carbon isotopes.  Eurasian Soil Science 43: 533-540.

Boutton TW, Liao JD.  2010.  Changes in soil nitrogen storage and δ¹⁵N with woody plant encroachment in a subtropical savanna parkland landscape.  Journal of Geophysical Research 115:  G03019, doi:10.1029/2009JG001184, 2010.

Liu F, Wu XB, Bai E, Boutton TW, Archer SR.  2010.  Spatial scaling of ecosystem C and N in a subtropical savanna landscape.  Global Change Biology 16: 2213-2223.

Kovda I, Morgun E, Boutton TW.  2010.  Vertic processes and specificity of organic matter properties and distribution in vertisols  Eurasian Soil Science 43: 1467-1476.

Hollister EB, Schadt CW, Palumbo AV, Ansley RJ, Boutton TW.  2010. Structural and functional diversity of soil bacterial and fungal communities following woody plant encroachment in the southern Great Plains.  Soil Biology and Biochemistry 42: 1816-1824.

Biederman L, Boutton TW.  2010. Spatial variation in biodiversity and trophic structure of soil nematode communities in a subtropical savanna parkland: responses to woody plant encroachment.  Applied Soil Ecology 46: 168-176.

Ansley RJ, Boutton TW, Mirik M, Kramp BA, Castellano MJ.  2010. Restoration of C₄ grasses with seasonal fires in a C₃/C₄ grassland invaded by Prosopis, a fire-resistant shrub.  Applied Vegetation Science 13: 520-530.

Boutton TW, Liao JD, Filley TR, Archer SR.  2009.  Belowground carbon storage and dynamics accompanying woody plant encroachment in a subtropical savanna.  IN:  Soil Carbon Sequestration and the Greenhouse Effect, 2nd ed., pp. 181-205, R. Lal and R. Follett, Eds.  Soil Science Society of America, Madison, WI.

Biederman L, Boutton TW. 2009. Biodiversity and trophic structure of soil nematode communities change following woody plant invasion of grassland.  Soil Biology and Biochemistry 41: 1943–1950.

Bai E, Boutton TW, Wu XB, Liu F, Archer SR.  2009.  Landscape-scale vegetation dynamics inferred from spatial patterns of soil δ¹³C in a subtropical savanna parkland.   Journal of Geophysical Research114: G01019, doi:10.1029/2008JG000839, 2009.

Dai X, Vietor DM, Boutton TW, Hons FM, Provin TL, White RH, Munster CL. 2009.  Effect of composted biosolids on soil organic carbon storage during establishment of turfgrass sod.  HortScience 44:  503-507.

Bai E, Boutton TW, Liu F, Wu XB, Archer SR, Hallmark CT.  2008.  Spatial variation of the stable nitrogen isotope ratio of woody plants along a topoedaphic gradient in a subtropical savanna.  Oecologia 159: 493-503.

Harris WN, Boutton TW, Ansley RJ.  2008.  Plant community and soil microbial responses to fire and clipping in a southern mixed grassland.   Rangeland Ecology and Management 61: 580-587.

Biederman L, Boutton TW, Whisenant SW.  2008.  Nematode community development early during ecological restoration: The role of organic amendments.  Soil Biology and Biochemistry 40: 2366-2374.

Filley TR, Boutton TW, Liao JD, Jastrow JD.  2008.  Chemical changes to non-aggregated particulate soil organic matter following grassland-to-woodland transition in a subtropical savanna.  Journal of Geophysical Research 113: G03009, doi:10.1029/2007JG000564, 2008

Millard P, Midwood AJ, Hunt JE, Whitehead D, Boutton TW.  2008.  Partitioning soil surface CO₂ efflux into autotrophic and heterotrophic components using natural gradients in soil δ¹³C in an undisturbed savannah soil.  Soil Biology and Biochemistry 40: 1575-1582.

Bai E, Boutton TW, Liu F, Wu XB, Archer SR. 2008. Variation in woody plant δ¹³C along a topoedaphic gradient in a subtropical savanna parkland.  Oecologia 156: 479-489.

Liao JD, Boutton TW.  2008.  Soil microbial biomass response to woody plant invasion of grassland.   Soil Biology and Biochemistry 40: 1207-1216.

McCulley RL, Boutton TW, Archer SR.  2007.  Soil respiration in subtropical savanna parkland: Response to water additions.   Soil Science Society of America Journal 71: 820-828.

Harris WN, Moretto AM, Distel RA, Boutton TW, Boo RM.  2007.  Fire and grazing in the grasslands of the Argentine caldenal: Effects on plant and soil carbon and nitrogen.  Acta Oecologica 32: 207-214.

Ansley RJ, Boutton TW, Jacoby PW.  2007.  Mesquite root distribution and water use efficiency in reponse to long-term soil moisture manipulations.  IN: Shrubland Dynamics: Fire and Water, pp. 96-103, RE Sosebee, DB Wester, CM Britton, ED McArthur, S Kitchens, Eds.  Proceedings RMRS-P-47, USDA Forest Service, Rocky Mountain Research Station, Ft. Collins, CO.

Ansley RJ,  Boutton TW, and Skjemstad JO.  2006.  Soil organic carbon and black carbon storage and dynamics under different fire regimes in temperate mixed-grass savanna.  Global Biogeochemical Cycles 20, GB3006, doi:10.1029/2005GB002670.

Filley T, Boutton TW.  2006.  Ecosystems in flux: Molecular and stable isotope assessments of soil organic matter storage and dynamics.   Soil Biology and Biochemistry 38: 3181-3183.

Liao JD, Boutton TW, Jastrow JD. 2006. Storage and dynamics of carbon and nitrogen in soil physical fractions following woody plant invasion of grassland.  Soil Biology and Biochemistry 38: 3184-3196.

Liao JD, Boutton TW, Jastrow JD. 2006. Organic matter turnover in soil physical fractions following woody plant invasion of grassland: Evidence from natural ¹³C and ¹⁵N. Soil Biology and Biochemistry 38: 3197-3210.

Dai X, Boutton TW, Ansley RJ, Hailemichael M, Jessup KE.  2006.  Soil carbon and nitrogen storage in response to fire in a temperate mixed-grass savanna.  Journal of Environmental Quality 35: 1620-1628.

Derner JD, Boutton TW, Briske DD.  2006.  Grazing and ecosystem carbon storage in the North American Great Plains.  Plant and Soil 280: 77-90.

Jastrow JD, Miller RM, Matamala R, Norby RJ, Boutton TW, Rice CW, Owensby CE.  2005.  Elevated atmospheric carbon dioxide increases soil carbon.  Global Change Biology 11: 2057-2064.

Dai X, Boutton TW, Glaser B, Ansley RJ, Zech W.  2005.  Black carbon in a temperate mixed-grass savanna.  Soil Biology and Biochemistry 37: 1879-1881.

Egilla JN, Davies FT, Boutton TW.  2005.  Drought stress influences leaf water content, photosynthesis, and water-use efficiency of Hibiscus rosa-sinensis at three potassium concentrations.  Photosynthetica 43: 135-140.

Mora MA, Boutton TW, Musquiz D. 2005. Regional variation and relationships between the contaminants DDE and selenium and stable isotopes in swallows nesting along the Rio Grande and one reference site, Texas, USA. Isotopes in Environmental and Health Studies 41: 69-85.

Northup BK, Zitzer SF, Archer S, McMurtry CR, Boutton TW. 2005. Above-ground biomass and carbon and nitrogen content of woody species in a subtropical thornscrub parkland.   Journal of Arid Environments 62: 23-43.

McCulley RL, Archer SR, Boutton TW, Hons FM, Zuberer DA. 2004. Soil respiration and nutrient cycling in wooded communities developing in grassland.  Ecology 85: 2804-2817.

Archer SR, Boutton TW, McMurtry C. 2004. Carbon and nitrogen storage in a savanna landscape: Field and modeling perspectives   IN: Global Environmental Change in the Ocean and on Land, pp.359-373, M Shiomi, H Kawahata, H Koizumi, A Tsuda, Y Awaya, Eds. Terrapub, Tokyo.

Jessup KE, Barnes PW, Boutton TW. 2003. Vegetation dynamics in a Quercus virginiana – Juniperus ashei savanna: An isotopic assessment.  Journal of Vegetation Science 14: 841-852.

Beazley MJ, Rickman RD, Ingram DK, Boutton TW, Russ J. 2003. Natural abundances of carbon isotopes (¹⁴C, ¹³C) in lichens and calcium oxalate pruina: Implications for archeological and paleoenvironmental studies  Radiocarbon 44: 675-683.

Derner JD, Johnson HB, Kimball BA, Pinter PJ, Polley HW, Tischler CR, Boutton TW, LaMorte RL, Wall GW, Adam NR, Leavitt SW, Ottman MJ, Matthias AD, Brooks TJ. 2003.  Above- and belowground responses of C₃-C₄ species mixtures to elevated CO₂ and soil water availability.  Global Change Biology 9: 452-460.

Nordt LC, Boutton TW, Jacob JJ, Mandel R. 2002. C₄ plant productivity in relation to climate-CO₂ variations in the southern Great Plains during the late Quaternary.  Quaternary Research 58: 182-188.

Davies FT, Olalde-Portugal V, Aguilera-Gomez L, Alvarado MJ, Ferrera-Cerrato RC, Boutton TW. 2002. Alleviation of drought stress of Chile ancho pepper (Capsicum annuum L. cv. San Luis) with arbuscular mycorrhiza indigenous to Mexico.  Scientia Horticulturae 92: 347-359.

Steelman KL, Rowe MW, Boutton TW, Southon JR, Merrell CL, Hill RD. 2002. Stable isotope and radiocarbon analyses of a black deposit associated with pictographs at Little Lost River Cave, Idaho.  Journal of Archaeological Science 29: 1189-1198.

Steelman KL, Rickman R, Rowe MW, Boutton TW, Russ J, Guidon N. 2002. AMS radiocarbon ages of an oxalate accretion and rock paintings at Toca do Serrote da Bastiana, Brazil  IN: Archeological Chemistry, pp. 22-35, K Jakes, Ed. American Chemical Society, Washington, DC.

Archer SR, Boutton TW, Hibbard K. 2001.  Trees in grasslands: Biogeochemical consequences of woody plant expansion.  IN: Global Biogeochemical Cycles in the Climate System,, pp. 115-137, E-D Schulze, SP Harrison, M Heimann, EA Holland, J Lloyd, IC Prentice, D Schimel, Eds. Academic Press, San Diego.

Russ J, Loyd DH, Boutton TW. 2000.  A paleoclimate reconstruction for southwestern Texas using oxalate residue from lichen as a paleoclimate proxy.  Quaternary International 67: 29-36.

Boutton TW, Archer SR, Midwood AJ.  1999.  Stable isotopes in ecosystem science: Structure, function, and dynamics of a subtropical savanna.  Rapid Communications in Mass Spectrometry 13:  1263-1277.

Midwood AJ, Boutton TW, Archer SR, Watts SE.  1998.  Water use by woody plants on contrasting soils in a savanna parkland: Assessment with δ²H and δ¹⁸O.  Plant and Soil  205: 13-24.

Boutton TW, Nordt LC, Kuehn DD. 1998. Late Quaternary vegetation and climate change in the North American Great Plains: Evidence from δ¹³C of paleosol organic carbon. IN: Isotope Techniques in the Study of Environmental Change, pp. 653-662. International Atomic Energy Agency, Vienna, Austria.

Boutton TW, Archer SR, Midwood AJ, Zitzer SF, Bol R. 1998. δ¹³C values of soil organic carbon and their use in documenting vegetation change in a subtropical savanna ecosystem.  Geoderma 82: 5-41.

Nordt LC, Hallmark CT, Wilding LP, Boutton TW. 1998. Quantifying pedogenic carbonate accumulations using stable carbon isotopes  Geoderma 82: 115-136.

Nordt LC, Kelly EF, Boutton TW, Chadwick OA. 1998. Biogeochemistry of isotopes in soil environments: Theory and application.  Geoderma 82: 1-3.

Nordt LC, Kelly EF, Boutton TW, Chadwick OA (eds.). 1998.  Biogeochemistry of Isotopes in Soil Environments: Theory and Application. Elsevier Science, Amsterdam (special issue of the journal Geoderma, Vol. 82, Nos. 1-3).

Yoder CK, Boutton TW, Thurow TL, Midwood AJ. 1998. Differences in soil water use by annual broomweed and grasses.  Journal of Range Management 51: 200-206.

Midwood AJ, Boutton TW. 1998. Soil carbonate decomposition by acid has little effect on δ¹³C of soil organic matter.  Soil Biology and Biochemistry 30: 1301-1307.

Derner JD, Briske DD, Boutton TW. 1997. Does grazing mediate soil carbon and nitrogen accumulation beneath C₄ perennial grasses along an environmental gradient?  Plant and Soil 191: 147-156.

Briske DD, Boutton TW, Wang Z. 1996.  Contribution of flexible allocation priorities to herbivory tolerance in C₄ perennial grasses: An evaluation with ¹³C labeling.  Oecologia 105: 151-159.

Jastrow JD, Boutton TW, Miller RM. 1996. Carbon dynamics of aggregate-associated organic matter estimated by ¹³C natural abundance  Soil Science Society of America Journal 60: 801-807.

Russ J, Palma RL, Loyd DH, Boutton TW, Coy MA. 1996. Origin of the whewellite-rich rock crust in the Lower Pecos region of southwest Texas and its significance to paleoclimate reconstructions.  Quaternary Research 46: 27-36.

Zitzer SF, Archer SR, Boutton TW. 1996.  Spatial variability in the potential for symbiotic N₂-fixation by woody plants in a subtropical savanna ecosystem.  Journal of Applied Ecology 33: 1125-1136.

Boutton TW, Yamasaki SI (eds.). 1996.  Mass Spectrometry of Soils.  Marcel Dekker, Inc., New York.

Boutton TW. 1996.  Stable carbon isotope ratios of soil organic matter and their use as indicators of vegetation and climate change.  IN: Mass Spectrometry of Soils, TW Boutton and SI Yamasaki, Eds., pp. 47-82. Marcel Dekker, Inc., New York.

Nordt LC, Boutton TW, Hallmark CT, Waters MR. 1994.  Late Quaternary vegetation and climate changes in central Texas based on the isotopic composition of organic carbon.  Quaternary Research 41: 109-120.

Flinn RC, Archer SR, Boutton TW. 1994.  Identification of annual rings in an arid-land woody plant, Prosopis glandulosa.  Ecology 75: 850-853.

Boutton TW, Nordt LC, Archer SR. 1994.  Climate, CO₂ and plant abundance.  Nature 372: 625-626.

Wolf DC, Legg JO, Boutton TW. 1994. Isotopic methods in the study of soil organic matter dynamics.  IN: Methods of Soil Analysis: Microbiological and Biochemical Properties, RW Weaver, JS Angle, and P Bottomley, Eds., pp. 865-906. Soil Science Society of America, Madison, Wisconsin.

Motil KJ, Thotathuchery M, Montandon CM, Hachey DL, Boutton TW, Klein PD, Garza C.  1994.  Insulin, cortisol, and thyroid hormones modulate maternal protein status and milk production in humans.  Journal of Nutrition 124: 1248-1257.

Huebner JA, Boutton TW. 1994. The isotopic ecology and niche separation of grassland herbivores in a prehistoric central Texas ecotone. IN: Human Ecology in the Middle Onion Creek Valley, RA Ricklis and MB Collins, Eds., pp. 569-582. Studies in Archeology 19, Texas Archeological Research Laboratory, Austin, TX.

McPherson GR, Boutton TW, Midwood AJ. 1993. Stable carbon isotope analysis of soil organic matter illustrates vegetation change at the grassland/woodland boundary in southeastern Arizona, USA. Oecologia 93: 95-101.

Svejcar TJ, Judkins MB, Boutton TW. 1993. Labeling of forages with ¹³C for nutrition and metabolism studies. Journal of Animal Science 71: 1320-1325.

Fu QA, Boutton TW, Ehleringer JR, Flagler RB. 1993. Environmental and developmental effects on carbon isotope discrimination by two species of Phaseolus. IN: Stable Isotopes and Plant Carbon/Water Relations, JR Ehleringer, AE Hall, and GD Farquhar, Eds. pp. 297-309. Academic Press, New York.

Elsik CG, Flagler RB, Boutton TW. 1993. Gas exchange and δ¹³C of loblolly and shortleaf pine as affected by ozone and water stress. IN: Stable Isotopes and Plant Carbon/Water Relations, JR Ehleringer, AE Hall, and GD Farquhar, Eds. pp. 227-244. Academic Press, New York.

Boutton TW, Nordt LC, Archer SR, Midwood AJ, Casar I. 1993. Stable carbon isotope ratios of soil organic matter and their potential use as indicators of paleoclimate. IN: Isotope Techniques in the Study of Past and Current Environmental Changes in the Hydrosphere and Atmosphere, pp. 445-459. International Atomic Energy Agency/UNESCO, Vienna, Austria.

Midwood AJ, Boutton TW, Watts SE, Archer SR. 1993. Natural abundance of ²H and ¹⁸O in rainfall, soil moisture, and plants in a subtropical thorn woodland ecosystem: Implications for plant water use. IN: Isotope Techniques in the Study of Past and Current Environmental Changes in the Hydrosphere and Atmosphere, pp. 419-431. International Atomic Energy Agency/UNESCO, Vienna, Austria.

Huebner JA, Boutton TW. 1992. The isotopic composition of human diets in prehistoric southeast Texas. Texas Journal of Science 44: 43-51.

Toomey RS, Huebner JA, Boutton TW. 1992. Stable carbon isotope ratios of Equus sp. and Bison antiquus from Late Pleistocene deposits at Hall’s Cave, Kerr County, Texas. Current Research in the Pleistocene 9: 112-114.

Elsik CG, Flagler RB, Boutton TW. 1992. Effects of ozone and water deficit on growth and physiology of Pinus taeda and Pinus echinata. IN: Response of Southern Commercial Forests to Air Pollution, RB Flagler, Ed. pp. 225-245. Air and Waste Management Association, Pittsburgh, PA.

Flagler RB, Lock J, Boutton TW. 1992. Ozone and water stress effects on winter wheat yield and physiology. IN: Tropospheric Ozone and the Environment: Effects, Modeling, and Control, RL Berglund, Ed. pp. 504-515. Air and Waste Management Association, Pittsburgh, PA.

Swerhone GDW, Hobson KA, van Kessel C, Boutton TW. 1991. An economical method for preparation of plant and animal tissue for δ¹³C analysis. Communications in Soil Science and Plant Analysis 22: 177-190.

Boutton TW, Lynott MJ, Bumsted MP. 1991. Stable carbon isotopes and the study of prehistoric human diet. Critical Reviews in Food Science and Nutrition 30: 373-385.

Boutton TW. 1991. Stable carbon isotope ratios of natural materials. I. Sample preparation and mass spectrometric analysis. IN: Carbon Isotope Techniques, DC Coleman and B Fry, Eds. pp. 155-171. Academic Press, New York.

Boutton TW. 1991. Stable carbon isotope ratios of natural materials. II. Atmospheric, terrestrial, marine, and freshwater environments. IN: Carbon Isotope Techniques, DC Coleman and B Fry, Eds. pp. 173-185. Academic Press, New York.

Boutton TW. 1991. Tracer studies with ¹³C-enriched substrates: Humans and large animals. IN: Carbon Isotope Techniques, DC Coleman and B Fry, Eds. pp. 219-242. Academic Press, New York.

Boutton TW, Flagler RB. 1991. ¹³C/¹²C ratios as indicators of plant physiological response to ozone and simulated acid rain. IN: Stable Isotopes in Plant Nutrition, Soil Fertility, and Environmental Studies. pp. 627-631. International Atomic Energy Agency, Vienna, Austria.

Lifschitz CH, Torun B, Chew F, Boutton TW, Garza C, Klein PD.  1991.  Absorption of carbon-13 labeled rice in milk by infants during acute gastroenteritis.  Journal of Pediatrics 118: 526-530.

Thomas MR, Irving CS, Reed PJ, Malphus EW, Wong WW, Boutton TW, Klein PD.  1991.  Lysine and protein metabolism in the young lactating woman.  European Journal of Clinical Nutrition 45: 227-242.

Shulman RJ, Boutton TW, Klein PD.  1991.  Impact of dietary cereal on nutrient absorption and fecal nitrogen loss in formula-fed infants. Journal of Pediatrics 118: 39-43.

Svejcar TJ, Boutton TW, Trent JD. 1990. Assessment of carbon allocation with stable carbon isotope labeling. Agronomy Journal 82: 18-21.

Bumsted MP, Booker JE, Barnes RM, Boutton TW, Armelagos GJ, Lerman JC, Brendel K. 1990. Recognizing women in the archeological record. IN: Powers of Observation: Alternative Views in Archeology, SM Nelson and AB Kehoe, Eds. pp. 89-101. Archeological Papers of the American Anthropological Association, Number 2.

Boutton TW, Flagler RB. 1990. Growth and water-use efficiency of shortleaf pine as affected by ozone and acid rain. IN: Proceedings 83rd Annual Meeting of the Air and Waste Management Association. Volume 90-187.7, pp. 1-16. Air and Waste Management Association, Pittsburgh, PA.

Murray RD, Boutton TW, Klein PD, Gilbert M, Paule CL, MacLean WC.  1990.  Comparative absorption of ¹³C-glucose and ¹³C-lactose by premature infants.  American Journal of Clinical Nutrition 51: 59-66.

Tieszen LL, Boutton TW, Ottichilo WK, Nelson DE, Brandt DH. 1989. An assessment of long-term food habits of Tsavo elephants based on stable carbon and nitrogen isotope ratios of bone collagen. African Journal of Ecology 27: 219-226.

Hachey DL, Wong WW, Boutton TW, Klein PD. 1989. Stable isotopes in the study of lipid and lipoprotein metabolism. IN: Synthesis and Applications of Isotopically Labeled Compounds, TA Baillie and JR Jones, Eds. pp. 13-19. Elsevier Science Publishers, Amsterdam, Netherlands.

Tieszen LL, Boutton TW. 1989. Stable carbon isotopes in terrestrial ecosystem research. IN: Stable Isotopes in Ecological Research, PW Rundel, JR Ehleringer, and KA Nagy, Eds. pp. 167-195. Ecological Studies 68. Springer-Verlag, N.Y.

Motil KJ, Montandon CM, Hachey DL, Boutton TW, Klein PD, Garza C.  1989.  Relationships among lactation performance, maternal diet, and body protein metabolism in humans.  European Journal of Clinical Nutrition 43: 681-691.

Hachey DL, Wong WW, Boutton TW, Klein PD.  1989.  Stable isotopes in the study of lipid and lipoprotein metabolism.  IN:  Synthesis and Applications of Isotopically Labeled Compounds, TA Baillie and JR Jones, Eds.  pp. 13-19.  Elsevier Science Publishers, Amsterdam, Netherlands.

Motil KJ, Montandon CM, Hachey DL, Boutton TW, Klein PD, Garza C.  1989.  Whole body protein metabolism in lactating and nonlactating women.  Journal of Applied Physiology 66: 370-376.

Boutton TW, Tieszen LL, Imbamba SK. 1988. Biomass dynamics of grassland vegetation in Kenya, East Africa. African Journal of Ecology 26: 89-102.

Boutton TW, Tieszen LL, Imbamba SK. 1988. Seasonal changes in the nutrient content of East African grassland vegetation. African Journal of Ecology 26: 103-116.

Boutton TW, Tyrrell HF, Patterson BW, Varga GA, Klein PD. 1988. Carbon kinetics of milk formation in Holstein cows in late lactation. Journal of Animal Science 66: 2636-2645.

Svejcar TJ, Boutton TW, Christiansen S. 1988. Rooting dynamics of Medicago sativa seedlings growing in association with Bothriochloa caucasica. Oecologia 77: 453-456.

Boutton TW, Hopkinson JM, Benton DA, Klein PD.  1988.  Background levels of carbon-13 reduced in breath and stool by new infant formula. Journal of Pediatric Gastroenterology and Nutrition 7: 723-731.

Lifschitz CH, Boutton TW, Carrazza F, Beyreiss K, Schmitz J, Ricour C, Shulman R, Nichols B.  1988.  A carbon-13 breath test to characterize glucose absorption and utilization in children.  Journal of Pediatric Gastroenterology and Nutrition 7: 842-847.

Graham DY, Klein PD, Opekun AR, Boutton TW, Evans DJ, Evans DG, Alpert LC, Michaletz PA, Yoshimura HH, Adam E.  1988.  Epidemiology of Campylobacter pylori infection: Ethnic considerations. Scandinavian Journal of Gastroenterology 23: 9-13.

Graham DY, Klein PD, Opekun AR, Boutton TW. 1988.  Effect of age on the frequency of active Campylobacter pylori infection diagnosed by the [¹³C]-urea breath test in normal subjects and patients with peptic ulcer disease.  Journal of Infectious Diseases 157: 777-780.

Hachey DL, Wong WW, Boutton TW, Klein PD. 1987. Isotope ratio measurements in nutrition and biomedical research. Mass Spectrometry Reviews 6: 289-328.

Graham DY, Klein PD, Evans DJ, Evans DG, Alpert LC, Opekun AR, Boutton TW.  1987.  Campylobacter pyloridis detected noninvasively in normal asymptomatic subjects and ulcer patients by the ¹³C-urea breath test.  The Lancet  329: 1174-1177.

Trowbridge FL, Marks JS, Lopez de Romana G, Madrid S, Boutton TW, Klein PD.  1987.  Body composition of Peruvian children with short stature and high weight-for-height. II. Implications for the interpretation of weight-for-height as an indicator of nutritional status.  American Journal of Clinical Nutrition 46: 411-418.

Boutton TW, Trowbridge FL, Nelson MM, Wills CA, Smith EO, Lopez de Romana G, Madrid S, Marks JS, Klein PD.  1987.  Body composition of Peruvian children with short stature and high weight-for-height. I. Total body water measurements and their prediction from anthropometric values. American Journal of Clinical Nutrition 45: 513-525.

Lynott MJ, Boutton TW, Price JE, Nelson DE. 1986. Stable carbon isotopic evidence for maize agriculture in southeast Missouri and northeast Arkansas. American Antiquity 51: 51-65.

Klein PD, Boutton TW, Hachey DL, Irving CS, Wong WW. 1986. The use of stable isotopes in metabolism studies. Journal of Animal Science 63 (Suppl. 2): 102-110.

Irving CS, Klein PD, Navratil PR, Boutton TW. 1986. Measurement of ¹³CO₂/¹²CO₂ abundance by nondispersive infrared heterodyne ratiometry as an alternative to gas isotope ratio mass spectrometry. Analytical Chemistry 58: 2172-2178.

Shulman RJ, Kerzner B, Sloan HR, Boutton TW, Wong WW, Nichols BL, Klein PD.  1986.  Absorption and oxidation of glucose polymers of different lengths in young infants.  Pediatric Research 20: 740-743.

Irving CS, Thomas MR, Malphus EW, Marks L, Wong WW, Boutton TW, Garza C, Klein PD.  1986.  Lysine and protein metabolism in young women: Subdivision based on the novel use of multiple stable isotopic labels.  Journal of Clinical Investigation 77: 1321-1331.

Hesla BI, Tieszen LL, Boutton TW. 1985. Seasonal water relations of savanna shrubs and grasses in Kenya, East Africa. Journal of Arid Environments 8: 15-31.

Dzurec RS, Boutton TW, Caldwell MM, Smith BN. 1985. Carbon isotope ratios of soil organic matter and their use in assessing community composition changes in Curlew Valley, Utah. Oecologia 66: 17-24.

Svejcar TJ, Boutton TW. 1985. The use of stable carbon isotope analysis in rooting studies. Oecologia 67: 205-208.

Lifschitz CH, Irving CS, Helge H, Wong WW, Boutton TW, Nichols BL, Klein PD.  1985.  ¹³C-acetate oxidation in infants after oral vs. rectal administration: A kinetic model.  Journal of Pediatric Gastroenterology and Nutrition 4: 699-706.

Shulman RJ, Irving CS, Boutton TW, Wong WW, Nichols BL, Klein PD.  1985.  Effect of infant age on aminopyrine breath test results.  Pediatric Research 19: 441-445.

Irving CS, Lifschitz CH, Wong WW, Boutton TW, Nichols BL, Klein PD.  1985.  Characterization of HCO₃^–/CO₂ pool sizes and kinetics in infants.  Pediatric Research 19: 358-363.

Boutton TW, Klein PD, Lynott MJ, Price JE, Tieszen LL. 1984. Stable carbon isotope ratios as indicators of prehistoric human diet. IN: Stable Isotopes in Nutrition, JR Turnlund and PE Johnson, Eds. pp. 191-204. American Chemical Society Symposium Series 258, American Chemical Society, Washington, DC.

Irving CS, Wong WW, Wong WM, Boutton TW, Shulman RJ, Lifschitz CH, Malphus EW, Helge H, Klein PD.  1984.  Rapid determination of whole body bicarbonate kinetics by use of a summed primed, exponential, and constant infusion protocol.  American Journal of Physiology 247: R709-R71

Boutton TW, Tieszen LL. 1983. Estimation of plant biomass by spectral reflectance in an East African grassland. Journal of Range Management 36: 213-216.

Tieszen LL, Boutton TW, Tesdahl KG, Slade NA. 1983. Fractionation and turnover of stable carbon isotopes in animal tissues: Implications for δ¹³C analysis of diet. Oecologia 57: 32-37.

Boutton TW, Wong WW, Hachey DL, Lee LS, Cabrera MP, Klein PD. 1983. Comparison of quartz and pyrex tubes for combustion of organic samples for stable carbon isotope analysis. Analytical Chemistry 55: 1832-1833.

Boutton TW, Arshad MA, Tieszen LL. 1983. Stable isotope analysis of termite food habits in East African grasslands. Oecologia 59: 1-7.

Smith BN, Boutton TW. 1981. Environmental influences on ¹³C/¹²C ratios and C₄ photosynthesis. IN: Photosynthesis VI. Photosynthesis and Productivity, Photosynthesis and Environment, G Akoyunoglou, Ed. pp. 255-262. Balaban International Science Services, Philadelphia, PA.

Boutton TW, Harrison AT, Smith BN. 1980. Distribution of biomass of species differing in photosynthetic pathway along an altitudinal transect in southeastern Wyoming grassland. Oecologia 45: 287-298.

Boutton TW, Smith BN, Harrison AT. 1980. Carbon isotope ratios and crop analyses of Arphia (Orthoptera: Acrididae) species in southeastern Wyoming. Oecologia 45: 299-306.

Smith BN, Martin GE, Boutton TW. 1979. Carbon isotopic evidence for the evolution of C₄ photosynthesis. IN: Stable Isotopes: Proceedings of the 3rd International Conference, ER Klein and PD Klein, Eds. pp. 231-237. Academic Press, New York.

Smith BN, Otto CB, Martin GE, Boutton TW. 1979. Photosynthetic strategies of desert plants. IN: Arid Land Plant Resources, J Goodin and D Northington, Eds. pp. 474-481. Texas Tech University Press, Lubbock, Texas.

Boutton TW, Cameron GN, Smith BN. 1978. Insect herbivory on C₃ and C₄ grasses. Oecologia 36: 21-32.