Do you have a recent publication that uses LTAR data or resources? Let us known via our message board so that we can promote it!

There are two ways to explore LTAR publications – through our curated Zotero library managed by the National Agriculture Library, and through the following publication listing managed by LTAR.



Andrew Fullhart, Guillermo E. Ponce-Campos, Menberu B. Meles, Ryan P. McGehee, Gerardo Armendariz, Paulo Tarso S. Oliveira, Cristiano Das Neves Almeida, José C. de Araújo, Werner Nel & David C. Goodrich (2022) Gridded 20-year climate parameterization of Africa and South America for a stochastic weather generator (CLIGEN), Big Earth Data, DOI:

Williams, C. J., Pierson, F. B., Al‐Hamdan, O. Z., Nouwakpo, S. K., Johnson, J. C., Polyakov, V. O., Kormos, P. R., Shaff, S. E., & Spaeth, K. E. (2022). Assessing runoff and erosion on woodland‐encroached sagebrush steppe using the Rangeland Hydrology and Erosion Model. In Ecosphere (Vol. 13, Issue 6). Wiley.

Goodrich, D. C., Bosch, D., Bryant, R., Cosh, M. H., Endale, D., Veith, T., Kleinman, P., Langendoen, E., McCarty, G., Pierson, F., Schomberg, H., Smith, D., Starks, P., Strickland, T., Tsegaye, T., Awada, T., Swain, H., Derner, J., Bestelmeyer, B., … Armendariz, G. (2022). Long term agroecosystem research experimental watershed network. In Hydrological Processes (Vol. 36, Issue 3). Wiley.

Cheng, G., Harmel, R. D., Ma, L., Derner, J. D., Augustine, D. J., Bartling, P. N. S., Fang, Q. X., Williams, J. R., Zilverberg, C. J., Boone, R. B., & Yu, Q. (2022). Evaluation of the APEX cattle weight gain component for grazing decision-support in the Western Great Plains. In Rangeland Ecology & Management (Vol. 82, pp. 1–11). Elsevier BV.

Derner, J. D., Budd, B., Grissom, G., Kachergis, E. J., Augustine, D. J., Wilmer, H., Scasta, J. D., & Ritten, J. P. (2022). Adaptive grazing management in semiarid rangelands: An outcome-driven focus. In Rangelands (Vol. 44, Issue 1, pp. 111–118). Elsevier BV.

Sean P. Kearney, Lauren M. Porensky, David J. Augustine, Rowan Gaffney, Justin D. Derner, Monitoring standing herbaceous biomass and thresholds in semiarid rangelands from harmonized Landsat 8 and Sentinel-2 imagery to support within-season adaptive management, Remote Sensing of Environment, Volume 271, 2022, 112907, ISSN 0034-4257,

Sheri Spiegal, Nicholas P. Webb, Elizabeth H. Boughton, Raoul K. Boughton, Amanda L. Bentley Brymer, Patrick E. Clark, Chandra Holifield Collins, David L. Hoover, Nicole Kaplan, Sarah E. McCord, Gwendŵr Meredith, Lauren M. Porensky, David Toledo, Hailey Wilmer, JD Wulfhorst, Brandon T. Bestelmeyer, Measuring the social and ecological performance of agricultural innovations on rangelands: Progress and plans for an indicator framework in the LTAR network, Rangelands, 2022, ISSN 0190-0528,

Hoover, D. L.Hajek, O. L.Smith, M. D.Wilkins, K.Slette, I. J., & Knapp, A. K. (2022). Compound hydroclimatic extremes in a semi-arid grassland: Drought, deluge, and the carbon cycleGlobal Change Biology001– 11


Browning, D. M., Russell, E. S., Ponce-Campos, G. E., Kaplan, N., Richardson, A. D., Seyednasrollah, B., Spiegal, S., Saliendra, N., Alfieri, J. G., Baker, J., Bernacchi, C., Bestelmeyer, B. T., Bosch, D., Boughton, E. H., Boughton, R. K., Clark, P., Flerchinger, G., Gomez-Casanovas, N., Goslee, S., … Taylor, S. D. (2021). Monitoring agroecosystem productivity and phenology at a national scale: A metric assessment framework. In Ecological Indicators (Vol. 131, p. 108147). Elsevier BV.

Starks, P. J., & Fortuna, A.-M. (2021). Comparable Discrimination of Soil Constituents Using Spectral Reflectance Data (400–1000 nm) Acquired with Hyperspectral Radiometry. In Soil Systems (Vol. 5, Issue 3, p. 45). MDPI AG.

Kearney, S. P., Porensky, L. M., Augustine, D. J., Derner, J. D., & Gao, F. (2022). Predicting spatial‐temporal patterns of diet quality and large herbivore performance using satellite time series. In Ecological Applications (Vol. 32, Issue 2). Wiley.

Kohmann, M.M., Saha, A., Silveira, M.L. et al. Farm-scale phosphorus budgets of beef cow-calf operations. Nutr Cycl Agroecosyst 119, 389–403 (2021).

White, K. E., Cavigelli, M. A., & Bagley, G. Legumes and nutrient management improve phosphorus and potassium balances in long-term crop rotations. Agronomy Journal. 2021; 113: 2681– 2697.

Gaffney, R.; Augustine, D.J.; Kearney, S.P.; Porensky, L.M. Using Hyperspectral Imagery to Characterize Rangeland Vegetation Composition at Process-Relevant Scales. Remote Sens. 2021, 13, 4603.

Paudel, S., Cobb, A. B., Boughton, E. H., Spiegal, S., Boughton, R. K., Silveira, M. L., Swain, H. M., Reuter, R., Goodman, L. E., and Steiner, J. L.. 2021. A framework for sustainable management of ecosystem services and disservices in perennial grassland agroecosystems. Ecosphere 12( 11):e03837.

Gaffney, R.; Augustine, D.J.; Kearney, S.P.; Porensky, L.M. Using Hyperspectral Imagery to Characterize Rangeland Vegetation Composition at Process-Relevant Scales. Remote Sens. 2021, 13, 4603.

Sarah E McCord, Nicholas P Webb, Justin W Van Zee, Sarah H Burnett, Erica M Christensen, Ericha M Courtright, Christine M Laney, Claire Lunch, Connie Maxwell, Jason W Karl, Amalia Slaughter, Nelson G Stauffer, Craig Tweedie, Provoking a Cultural Shift in Data Quality, BioScience, 2021;, biab020,

Bean AR, Coffin AW, Arthur DK, Baffaut C, Holifield Collins C, Goslee SC, Ponce-Campos GE, Sclater VL, Strickland TC and Yasarer LM (2021) Regional Frameworks for the USDA Long-Term Agroecosystem Research Network. Front. Sustain. Food Syst. 4:612785. doi:


Goodrich, D. C.Heilman, P.Anderson, M.Baffaut, C.Bonta, J.Bosch, D., et al. (2020). The USDA‐ARS Experimental Watershed Network – Evolution, Lessons Learned, Societal Benefits, and Moving ForwardWater Resources Research56, e2019WR026473. Accepted Author Manuscript.

Weltz, M. A., Huang, C.-H., Newingham, B. A., Tatarko, J., Nouwakpo, S. K., & Tsegaye, T. (2020). A strategic plan for future USDA Agricultural Research Service erosion research and model development. Journal of Soil and Water Conservation, 75(6), 137A-143A.

Archer, D.W., M.A. Liebig, and S.L. Kronberg. 2020. Dryland crop production and economic returns for crop residue harvest or grazing. Agron. J.

Baffaut, C., Ghidey, F., Lerch, R.N., Veum, K.S., Sadler, E.J., Sudduth, K.A. and Kitchen, N.R. 2020. Effects of combined conservation practices on soil and water quality in the Central Mississippi River Basin. Journal of Soil and Water Conservation, 75(3):340-351; doi:

Claire Baffaut, John M. Baker, Joel A. Biederman, David D. Bosch, Erin S. Brooks, Anthony R. Buda, Eleonora M. Demaria, Emile H. Elias, Gerald N. Flerchinger, David C. Goodrich, Stephen K. Hamilton, Suart P. Hardegree, R.Daren Harmel, David L. Hoover, Kevin W. King, Peter J. Kleinman, Mark A. Liebig, Gregory W. McCarty, Glenn E. Moglen, Thomas G. Moorman, Daniel N. Moriasi, Jane Okalebo, Fred B. Pierson, Eric S. Russell, Nicanor Z. Saliendra, Amartya K. Saha, Douglas R. Smith, Lindsey M.W. Yasarer,
Comparative analysis of water budgets across the U.S. Long-Term Agroecosystem Research network, Journal of Hydrology, 2020, 125021, ISSN 0022-1694,

Conway, L.S., M.A. Yost, N.R. Kitchen, K.A. Sudduth, R.E. Massey and E.J. Sadler. 2020. Cropping system and landscape characteristics influence long-term grain crop profitability. Agrosystems, Geosciences & Environment, 3(1): e20099; doi:

Daniel N. Moriasi, Lisa F. Duriancik, E. John Sadler, Teferi Tsegaye, Jean L. Steiner, Martin A. Locke, Timothy C. Strickland and Deanna L. Osmond, Quantifying the impacts of the Conservation Effects Assessment Project watershed assessments: The first fifteen years Journal of Soil and Water Conservation May 2020, 75 (3) 57A-74A; DOI: 

Lohani, S., C. Baffaut, A.L. Thompson, N. Aryal, R.L. Bingner, D.L. Bjorneberg, D.D. Bosch, R.B. Bryant, A. Buda, S.M. Dabney, A.R. Davis, L.F. Duriancik, D.E. James, K.W. King, P.J.A. Kleinman, M. Locke, G.W. McCarty, L.A. Pease, M.L. Reba, D.R Smith, M.D. Tomer, T.L. Veith, M.R. Williams, and L.M.W. Yasarer. 2020. Performance of the Soil Vulnerability Index with respect to slope, digital elevation model resolution, and hydrologic soil group. J. Soil and Water Conservation. 75:12-27. doi:

Plummer, R.E., Hapeman, C.J., Rice, C.P., McCarty, G.W., Schmidt, W.F., Downey, P.M., Moorman, T.B., Douglas, E.A., Strickland, T.C., Pisani, O., Bosch, D.D., Elkin, K.R., Buda, A.R. 2020. Method to evaluate the age of groundwater inputs to surface waters by determining the chirality change of metolachlor ethanesulfonic acid (MESA) captured on a polar organic chemical integrative sampler (POCIS). Journal of Agricultural and Food Chemistry. 68(8):2297-2305. ARIS # 368786.

Rice, C., Hively, W.D., McCarty, G.W., Hapeman, C.J. 2020. Fluxes of agricultural nitrogen and metolachlor metabolites are highly correlated in a first order stream in Maryland, USA. Science of the Total Environment. 716:136590. ARIS # 368504.

Rotz, C.A., R.C. Stout, M.A. Holly, and P.J.A. Kleinman. 2020. Regional environmental assessment of dairy farms. J. Dairy Sci. 103:1-14 (in press).

Webb NP, Kachergis E, Miller SW, McCord SE, Bestelmeyer BT, Brown JR, Chappell A, Edwards BL, Herrick JE, Karl JW, Leys JF, Metz LJ, Smarik S, Tatarko J, Van Zee JW, Zwicke G, 2020. Indicators and benchmarks for wind erosion monitoring, assessment and management. Ecological Indicators. Vol. 110, 105881. doi: ARIS#: 367120.

Yasarer, L.M.W., Taylor, J., Rigby, J.R., and Locke, M.A. 2020. Trends in land use, irrigation, and streamflow alteration in the Mississippi River Alluvial Plain. Frontiers in Environmental Science.


Alexander, J.R., J.M. Baker, R.T. Venterea, and J.A. Coulter. 2019. Kura clover living mulch reduces fertilizer N requirements and increases profitability of maize. Agronomy 9 (8) 432. Log #360630.

Demaria, E.M.C., Hazenberg, P., Scott, R.L., Meles, M., Nichols, M.H., Goodrich, D.C. 2019. Intensification of the North American Monsoon rainfall as observed from a long-term high-density gauge network. Geophysical Research Letter. 46(12): 6389-6847.

Moffet, C.A., S.P. Hardegree, J.T. Abatzoglou, K.C. Hegewisch, R.R. Reuter, R.L. Sheley, M.W. Brunson, G.N. Flerchinger, A.R. Boehm. 2019. Weather tools for retrospective assessment of restoration outcomes. Rangeland Ecology and Management 72:225-229.
Ackroyd, V.J., Cavigelli, M.A., Spargo, J.T., Davis, B., Garst, G. and Mirsky, S.B., 2019. Legume cover crops reduce poultry litter application requirements in organic systems. Agronomy Journal, 111(5), pp.2361-2369. ARIS # 357348

Colliander, A., T.J. Jackson, A. Berg, D. Bosch, T. Caldwell, S. Chan, M.H. Cosh, C.H. Collins, J. Martinez-Fernandez, H. McNairn, J. Prueger, P. Starks, J.P. Walker, and S.H. Yueh, 0: Effect of Rainfall Events on SMAP Radiometer-Based Soil Moisture Accuracy Using Core Validation Sites. J. Hydrometeor., 0, ARIS # 365432.

Cosh, M H., White, W. A., Colliander, A., Jackson, T. J., Prueger, J. H., Hornbuckle, B. K., Hunt, E. R. 2019. Estimating Vegetation Water Content during the Soil Moisture Active Passive Validation Experiment 2016. Journal of Applied Remote Sensing 13 (1): 1–12. ARIS # 357968.

Dold, C., Hatfield, J.L., Prueger, J.H., Moorman, T.B., Sauer, T.J., Cosh, M.H., Drewry, D.T., Wacha, K.M. 2019. Upscaling Gross Primary Production in corn-soybean rotation systems in the Midwest. Remote Sensing. 11(14):1688. ARIS # 364290.

Duncan, E. P.J.A. Kleinman, D.B. Beegle, C.J. Dell. 2019. Nutrient cycling trade-offs with broadcasting and injecting dairy manure. Nutrient Cycling in Agroecosystems. DOI:

Amin, M.G., T.L. Veith, J. Shortle, H.D. Karsten, and P.J. Kleinman. 2019. Addressing the spatial disconnect between national-scale total maximum daily loads and localized land management decisions. J. Environmental Quality.

Sharpley, A., M. Helmers, P. Kleinman, K. King, A. Leytem and N. Nelson. 2019. Managing crop nutrients to achieve water quality goals. J. Soil Water Conserv. 74: 91A-101A.

Kleinman, P., R.M. Fanelli, R.M. Hirsch, A.R. Buda, Z. Easton, L. Wainger, C. Brosch, M. Lowenfish, A. Collick, A. Shirmohammadi, K. Boomer, J. Hubbart, R. Bryant and G. Shenk. 2019. Phosphorus and the Chesapeake Bay – Lingering issues and emerging concerns for agriculture. J Environ Qual. 48: 1191-1203. DOI:

Smith, D.R., M.L. Macrae, P.J.A. Kleinman, H.P. Jarvie, K.W. King and R.B. Bryant. 2019. The latitudes, attitudes and platitudes of watershed phosphorus management in North America. J Journal of Environmental Quality 48(5) · September 2019

Ma, L., Derner, J.D., Harmel, R.D., Tatarko, J., Moore, A., Rotz, C.A., Augustine, D.J., Boone, R., Coughenour, M. 2019. Application of grazing land models in ecosystem management: Current status and next frontiers. Advances in Agronomy. 158:173-216.

Spiegal, S., Kleinman, P.J., Endale, D.M., Bryant, R.B., Dell, C., Goslee, S., Meinen, R.J., Flynn, C., Baker, J., Browning, D., McCarty, G., Bittman, S., Carter, J., Cavigelli, M., Duncan, E., Gowda, P., Li, X., Ponce-Campos, G.E., Raj, C., Silveira, M., Smith, D.R., Arthur, D.K., Yang, Q. Manuresheds: Advancing nutrient recycling in US agriculture.

Steiner, J.L., Starks, P.J., Neel, J.P.S., Northup, B., Turner, K.E., Gowda, P., Coleman, S., and Brown, M. 2019. Managing tallgrass prairie for productivity and ecological function: a long-term grazing experiment in the Southern Great Plains, USA. Agronomy 9(11):699, https://doi:10.3390/agronomy9110699. ARIS Log# 365490

Scott, R.L., Biederman, J.A. 2019. Critical zone water balance over thirteen years in a semiarid savanna. Water Resources Research. 55:574-588. ARIS # 354197

Tomer, M, KE Schilling, and KJ Cole. 2019. Nitrate on a slow decline: watershed water quality response during two decades of tallgrass prairie ecosystem reconstruction in Iowa. J Environ. Qual. 48:579–585. doi: Log No 354577

Williams, C.J., Pierson Jr., F.B., Kormos, P.R., Al-Hamdan, O.Z., Nouwakpo, S.K., Weltz, M.A. 2019. Vegetation, Hydrologic, and Erosion Responses of Sagebrush Steppe 9 Yr Following Mechanical Tree Removal. Rangeland Ecology and Management. 72(1): 47-68. ARIS # 346136

Wagle, P., Gowda, P.H., Northup, B.K., Starks, P.J., and Neel, J.P.S. 2019. Response of tallgrass prairie to management in the U.S. Southern Great Plains: site descriptions, management practices, and eddy covariance instrumentation for a long-term experiment. Remote Sensing, 11(17):1988, ARIS Log# 366385

Yan, D., Scott, R.L., Moore, D.J.P., Biederman, J.A., Smith, W.K. 2019. Understanding the relationship between vegetation greenness and productivity across dryland ecosystems through the integration of PhenoCam, satellite, and eddy covariance data. Remote Sensing and the Environment. 223:50-62. doi: 10.1016/j.rse.2018.12.029 ARIS # 351870

Yost, M.A., N.R. Kitchen, K.A. Sudduth, R.E. Massey, E.J. Sadler, S.T. Drummond and M.R. Volkmann (2019). “A long‑term precision agriculture system sustains grain profitability.” Precision Agriculture 20: 1177–1198.


Delgado, J. A., Vandenberg, B., Kaplan, N., Neer, D., Wilson, G., D’Adamo, R., … Derner, J. D. (2018). Agricultural Collaborative Research Outcomes System (AgCROS): A network of networks connecting food security, the environment, and human health. Journal of Soil and Water Conservation , 73(6), 158A–164A.

Kleinman, P. J. A., S. Spiegal, J. R. Rigby, S. C. Goslee, J. M. Baker, B. T. Bestelmeyer, R. K. Boughton, R. B. Bryant, M. A. Cavigelli, J. D. Derner, E. W. Duncan, D. C. Goodrich, D. R. Huggins, K. W. King, M. A. Liebig, M. A. Locke, S. B. Mirsky, G. E. Moglen, T. B. Moorman, F. B. Pierson, G. P. Robertson, E. J. Sadler, J. S. Shortle, J. L. Steiner, T. C. Strickland, H. M. Swain, T. Tsegaye, M. R. Williams, and C. L. Walthall. 2018. Advancing the Sustainability of US Agriculture through Long-Term Research. J. Environ. Qual. 47:1412-1425. doi:10.2134/jeq2018.05.0171

S Spiegal, B T Bestelmeyer, D W Archer, D J Augustine, E H Boughton, R K Boughton,M A Cavigelli, P E Clark, J D Derner, E W Duncan, C J Hapeman, R D Harmel, P Heilman, M A Holly, D R Huggins, K King, P J A Kleinman, M A Liebig, M A Locke, G W McCarty, N Millar,S B Mirsky, T B Moorman, F B Pierson, J R Rigby, G P Robertson, J L Steiner, T C Strickland, H M Swain, B J Wienhold, J D Wulfhorst, M A Yost and C L Walthall (2018). Evaluating strategies for sustainable intensification of US agriculture through the Long-Term Agroecosystem Research network OPEN ACCESS Evaluating strategies for sustainable intensification of US agriculture through the Long-Term Agroecosystem Research n. Environmental Research Letters, 13, 34031.


Augustine, D.J., Derner, J.D., Milchunas, D., Blumenthal, D.M., Porensky, L.P. 2017. Grazing moderates increases in C3 grass abundance over seven decades across a soil texture gradient in shortgrass steppe. Journal of Vegetation Science DOI:

Porensky, L.M., Derner, J.D., Augustine, D.J., Milchunas, D.G. 2017. Plant community composition after 75 years of sustained grazing intensity treatments in shortgrass steppe. Rangeland Ecology & Management DOI:

Liebig, M.A., Herrick, J.E., Archer, D.W., Dobrowolski, J., Duiker, S.W., Franzluebbers, A.J., Hendrickson, J.R., Mitchell, R., Mohamed, A., Russell, J., Strickland, T.C.. 2017. Aligning land use with land potential: The role of integrated agriculture. Agricultural and Environmental Letters. 2:170007 doi:

Prueger, J.H., Alfieri, J.G., Gish, T.J., Kustas, W.P., Hatfield, J.L., Daughtry, C.S.T., McKee, L.G. 2017. Multi-year measurements of field-scale metolachlor volatilization. Water, Air, and Soil Pollution, 228, 84 doi:

Dold, C., H. Buyukcangaz, W. Rondinelli, J.H. Preuger, T.J. Sauer, and J.L. Hatfield. 2017. Long-term carbon uptake in agro-ecosystems in the Midwest Agric. For. Meteorol. 232:128-140 DOI:

Yost, M.A., Kitchen, N.R., Sudduth, K.A., Sadler, E.J., Drummond, S.T., and Volkmann, M.R. 2017. Long-term impact of a precision agriculture system on grain crop production. Precision Agriculture 18(5):823-842. doi:


Chan, S., Bindlish, R., O’Neill, P., Njoku, E., Jackson, T.J., Colliander, A., Chen, F., Burgin, M., Dunbar, R., Peipmeier, J., Yueh, S., Entekhabi, D., Cosh, M.H., Caldwell, T., Walker, J., Wu, X., Berg, A., Rowlandson, T., Pacheco, A., McNairn, H., Thibeault, M., Martinez-Fernandez, J., Gonzalez-Zamora, A., Seyfried, M.S., Bosch, D.D., Starks, P.J., Goodrich, D.C., Prueger, J.H., Palecki, M., Small, E., Zreda, M., Calvet, J., Crow, W.T., Kerr, Y. 2016. Assessment of the SMAP level 2 passive soil moisture product. IEEE Transactions on Geoscience and Remote Sensing.. 54(8):1-14 doi:

Christianson, L. E., Harmel, R. D., Smith, D., Williams, M. R., & King, K. 2016. Assessment and Synthesis of 50 Years of Published Drainage Phosphorus Losses. Journal of Environmental Quality, 45(5), 1467-1477 doi:

Lee, S., Yeo, I.Y., Sadeghi, A.M., Lang, M.W., McCarty, G.W., Hively, W.D. 2016. Impacts of watershed characteristics and crop rotations on winter cover crop nitrate –nitrogen uptake capacity within agricultural watershed in the Chesapeake Bay region. PLOS ONE J doi:

Levi, M.R., Bestelmeyer, B.T.. 2016. Biophysical influences on the spatial distribution of fire in the desert grassland region of the southwestern USA. Landscape Ecology. 31(9):2079–2095

Nicholas P. Webb , Jeffrey E. Herrick, Justin W. Van Zee, Ericha M. Courtright, Christopher H. Hugenholtz, Ted M. Zobeck, Gregory S. Okin, Thomas E. Barchyn, Benjamin J. Billings, Robert Boyd, Scott D. Clingan, Brad F. Cooper, Michael C. Duniway, Justin D. Derner, Fred A. Fox, Kris M. Havstad a , Philip Heilman, Valerie LaPlante, Noel A. Ludwig, Loretta J. Metz, Mark A. Nearing, M. Lee Norfleet, Frederick B. Pierson, Matt A. Sanderson, Brenton S. Sharratt, Jean L. Steiner, John Tatarko, Negussie H. Tedela, David Toledo, Robert S. Unnasch, R. Scott Van Pelt, Larry Wagner. 2016. The National Wind Erosion Research Network: Building a standardized long-term data resource for aeolian research, modeling and land management. Aeolian Research 22 (2016) 23–36.

Polyakov, V. O.; Nearing, M. A.; Stone, J. J.; Collins, C. D. Holifield; Nichols, M. H. 2016. Quantifying Decadal-Scale Erosion Rates And Their Short-Term Variability On Ecological Sites In A Semi-Arid Environment. CATENA 2016, 137, 501 – 507 DOI: 

Porensky, L.M., Mueller, K.E., Augustine, D.J., Derner, J.D. 2016. Thresholds and gradients in a semi-arid grassland: long-term grazing treatments induce slow, continuous, and reversible vegetation change. Journal of Applied Ecology. 53:1013-1022 DOI:

Salley, S.W., Sleezer, R., Bergstrom, R., Martin, P., Kelly, E.. 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

Sanderson, M.A., Liebig, M.A, Hendrickson, J.R., Kronberg, S.L., Toledo, D.N., Derner, J.D., Reeves, J.L. 2016. A century of grazing: The value of long-term research. Journal of Soil and Water Conservation. 71(1):5A-8A DOI:

Tomer, M.D., T.B. Moorman, J.L. Kovar, K.J. Cole, and D.J. Nichols. 2016. Eleven years of runoff and phosphorus losses from two fields with and without manure application, Iowa USA. Agric. Wat. Manage. 168:104-111 DOI:

Yost, M.A., Kitchen, N.R., Sudduth, K.A., Sadler, E.J., Baffaut, C., Volkmann, M.R., Drummond, S.T. 2016. Long-term impacts of cropping systems and landscape positions on claypan soil grain crop production. Agron. J. 108(2):713-725 doi:

Williams, C.J., Pierson Jr, F.B., Kormos, P.R., Al-Hamdan, O.Z., Hardegree, S.P., Clark, P. 2016. Ecohydrologic response and recovery of a semi-arid shrubland over a five year period following burning. Catena. 144:163-176 doi:

Williams, C.J., Pierson Jr, F.B., Spaeth, K.E., Brown, J.R., Al-Hamdan, O.Z., Weltz, M.A., Nearing, M.A., Herrick, J.E., Boll, J., Robichaud, P.R., Goodrich, D.C., Heilman, P., Guertin, P.D., Hernandez, M., Wei, H., Hardegree, S.P., Strand, E.K., Bates, J.D., Metz, L., Nichols, M.H. 2016. Incorporating hydrologic data and ecohydrologic relationships in ecological site descriptions. Rangeland Ecology and Management. 69:4-19 doi:

Williams, C.J., Pierson Jr, F.B., Spaeth, K.E., Brown, J.R., Al-Hamdan, O.Z., Weltz, M.A., Nearing, M.A., Herrick, J.E., Boll, J., Robichaud, P.R., Goodrich, D.C., Heilman, P., Guertin, P.D., Hernandez, M., Wei, H., Hardegree, S.P., Strand, E.K., Bates, J.D., Metz, L., Nichols, M.H. 2016. Incorporating hydrologic data and ecohydrologic relationships in ecological site descriptions. Rangeland Ecology and Management. 69:4-19


Aguilar, J., G.G. Gramig, J.R. Hendrickson, D.W. Archer. F. Forcella, and M.A. Liebig. 2015. Crop diversity changes in the United States: 1978 – 2012. PLoS ONE 10(8): e0136580 doi:

Baffaut, C., Ghidey, F., Sadler, E.J., Anderson, S.H. 2015. Long-term agroecosystem research in the central Mississippi River Basin: SWAT simulation of flow and water quality in the Goodwater Creek Experimental Watershed J. Environ. Qual. 44:84-96 doi:

Baffaut, C., Sadler, E.J., Ghidey, F. 2015. Long-term agroecosystem research in the Central Mississippi River Basin: Goodwater Creek Experimental Watershed flow data J. Environ. Qual. 44:18-27 doi:

Bestelmeyer, B.T., Okin, G., Duniway, M., Archer, S., Sayer, N., Williamson, J., Herrick, J.E. 2015. Desertification, land use, and the transformation of global drylands. Frontiers in Ecology and the Environment. 13:28-36

Gelfand, I. and G. P. Robertson. 2015. A reassessment of the contribution of soybean biological nitrogen fixation to reactive N in the environment. Biogeochemistry 123:175-184

Hatfield, J.L. 2015. Environmental impact of water use in agriculture. Agron. J. 107:1554-1556 DOI:

Jean L. Steiner, Timothy Strickland, Peter J.A. Kleinman, Kris Havstad, Thomas B. Moorman, M. Susan Moran, Phil Heilman, Ray B. Bryant, David Huggins, and Greg McCarty. 2016. The Long Term Agroecosystem Research Network – Shared Research Strategy. p. 42-51. Proceedings of the Fifth Interagency Conference on Research in the Watersheds in Stringer, Christina E.; Krauss, Ken W.; Latimer, James S., eds. 2016. Headwaters to estuaries: advances in watershed science and management—Proceedings of the Fifth Interagency Conference on Research in the Watersheds. March 2-5, 2015, North Charleston, S outh Carolina. e-Gen. Tech. Rep. SRS-211. Asheville, NC: U.S. Department of Agriculture Forest Service, Southern Research Station. 302 p.

King, K. W., Williams, M. R., & Fausey, N. R. 2015. Contributions of Systematic Tile Drainage to Watershed-Scale Phosphorus Transport Journal of Environmental Quality, 44(2), 486-494 doi:

Kitchen, N.R., Blanchard, P.E., Lerch, R.N. 2015. Long-term agroecosystem research in the Central Mississippi River Basin: hydrogeologic controls and crop management influence on nitrates in loess and fractured glacial till . J. Environ. Qual. 44:58-70 doi:

Lerch, R.N., Baffaut, C., Kitchen, N.R., Sadler, E.J. 2015. Long-term agroecosystem research in the Central Mississippi River Basin: dissolved nitrogen and phosphorus transport in a high-runoff-potential watershed J. Environ. Qual. 44:44-57

Lerch, R.N., Baffaut, C., Sadler, E.J., Kremer, R.J. 2015. Long-term agroecosystem research in the Central Mississippi River Basin: Goodwater Creek Experimental Watershed and regional herbicide water quality data J. Environ. Qual. 44:28-36 doi:

Peters, D.C., Havstad, K.M., Archer, S.R., Sala, O.E.. 2015. Beyond desertification: New paradigms for dryland landscapes. Frontiers in Ecology and the Environment. 13:4-12

Robertson, G. P.. 2015. A sustainable agriculture?. Daedalus 144:76-89

Robertson, G. P. and S. K. Hamilton. 2015. Long-term ecological research in agricultural landscapes at the Kellogg Biological Station LTER site: Conceptual and experimental framework. Pages 1-32 in S. K. Hamilton, J. E. Doll, and G. P. Robertson, editors. The Ecology of Agricultural Landscapes: Long-Term Research on the Path to Sustainability. Oxford University Press, New York, New York, USA

Sadler, E. J., K. A. Sudduth, S. T. Drummond, E. D. Vories, and P. E. Guinan. 2015. Long-Term Agroecosystem Research in the Central Mississippi River Basin: Goodwater Creek Experimental Watershed Weather Data. J. Environ. Qual. 44:13-17. doi:10.2134/jeq2013.12.0515

Sadler, E.J., Lerch, R.N., Kitchen, N.R., Anderson, S.H., Baffaut, C., Sudduth, K.A., Prato, A.A., Kremer, R.J., Vories, E.D., Myers, D.B., Broz, R., Miles, R.J., Young, J. 2015. Long-term agroecosystem research in the Central Mississippi River Basin: introduction, establishment, and overview J. Environ. Qual. 44:3-12 doi:

Sanderson, M.A., Liebig, M.A., Hendrickson, J.R., Kronberg, S.L., Toledo, D., Derner, J.D., Reeves, J.L. 2015. Long-term agroecosystem research on northern Great Plains mixed-grass prairie near Mandan, North Dakota Canadian Journal of Plant Science. 95:1101-1116 DOI:

Smith, D. R., King, K. W., Johnson, L., Francesconi, W., Richards, P., Baker, D., &Sharpley, A. N. 2015. Surface Runoff and Tile Drainage Transport of Phosphorus in the Midwestern United States Journal of Environmental Quality, 44(2), 495-502 doi:

Tomer, M.D., S.A. Porter, K.M.B. Boomer, D.E. James, J.A. Kostel, M.J. Helmers, T.M. Isenhart, and E. McLellan. 2015. Agricultural Conservation Planning Framework: 1. Developing multi-practice watershed planning scenarios and assessing nutrient reduction potential. J. Environ. Qual. 44(3):754-767 DOI:

Tomer, M.D., K.M.B. Boomer, S.A. Porter, B.K. Gelder, D.E. James, and E. McLellan. 2015. Agricultural Conservation Planning Framework: 2. Classification of riparian buffer design-types with application to assess and map stream corridors. J. Environ. Qual. 44(3):768-779 DOI:

Veum, K.S., R.J. Kremer, K.A. Sudduth, N.R. Kitchen, R.N. Lerch, C. Baffaut, et al. 2015. Conservation effects on soil quality indicators in the Missouri Salt River Basin. J. Soil Water Conserv. 70: 232-246.

Yahdjian, L., Sala, O., Havstad, K.M.. 2015. Rangeland ecosystem services: shifting focus from supply to reconciling supply and demand. Frontiers in Ecology and the Environment. 13:44-51

Zhang, X., X. Lee, T.J. Griffis, A.E. Andrews, J. M. Baker, M.D. Erickson, N. Hu, and X. Wei. 2015. Quantiftying nitrous oxide fluxes on multiple spatial scales in the Upper Midwest , USA. Int. J. Biomet. 59:299-310 DOI:


Cosh, M. H., Starks, P. J., Guzman, J. A., & Moriasi, D. N.. 2014. Upper Washita River experimental watersheds: Multiyear stability of soil water content profiles. Journal of Environmental Quality, 43(4), 1328-1333 doi:

Garbrecht, J. D., Nearing, M. A., Shields, F. D., Tomer, M. D., Sadler, E. J., Bonta, J. V., & Baffaut, C. 2014. Impact of weather and climate scenarios on conservation assessment outcomes. Journal of Soil and Water Conservation, 69(5), 374-392 doi:

Garbrecht, J. D., Zhang, X. C., & Steiner, J. L.. 2014. Climate change and observed climate trends in the Fort Cobb experimental watershed. Journal of Environmental Quality, 43(4), 1319-1327 doi:

Gilmanov, T.G., J.M. Baker, C.J. Bernacchi, D.P. Billesbach, G.C. Burba, S. Castro, J. Chen, W. Eugster, M.L. Fischer, J.A. Gamon, M.T. Gebremedhin, A.J. Glenn, T.J. Griffis, J.L. Hatfield, M.W. Heuer, D.M. Howard, M.Y. Leclerc, H.W. Loescher, O. Marloie, T.P. Meyers, A. Olioso, R.L. Phillips, J.H. Preuger, R.H. Shkinner, A.E. Suyker, M. Tenuta, and B.K. Wylie. 2014. Productivity and carbon dioxide exchange of leguminous crops: estimates from flux tower measurements. Agron J. 106:545-559 DOI:

Guzman, J. A., Chu, M. L., Starks, P. J., Moriasi, D. N., Steiner, J. L., Fiebrich, C. A., & McCombs, A. G.. 2014. Upper Washita River experimental watersheds: Data screening procedure for data quality assurance. Journal of Environmental Quality, 43(4), 1250-1261 doi:

Harmel, R.D., Haney, R.L., Smith, D.R., King, K.W. 2014. USDA-ARS Riesel Watersheds, Riesel, Texas, USA: Water quality research database. Water Resources Research. 50:8374- 8382

Jaynes, D.B., and T.M Isenhart. 2014. Reconnecting tile drainage to riparian buffer hydrology for enhanced nitrate removal. J. Environ. Qual. 43(2):631-638 DOI:

Karlen, D.L., D.E. Stott, C.A. Cambardella, R.J. Kremer, K.W. King, and G.W. McCarty. 2014. Surface soil quality in five midwestern cropland Conservation Effects Assessment Project watersheds. J. Soil Water Conserv. 69:393-401 DOI:

Luyssaert, S., M. Jammet, P.C. Stoy, S. Estel, J. Pongratz, E. Ceschia, G. Churkina, A. Don, K.H. Erb, M.Ferlicoq, B. Gielen, T. Grünwald, R.A. Houghton, K. Klumpp, A. Knohl, T. Kolb, T. Kuemmerle, T. Laurila, A. Lohila, D. Loustau, M.J. McGrath, P. Meyfroidt, E.J. Moors, K. Naudts, K. Novick, J. Otto, K. Pilegaard, C.A. Pio, S. Rambal, C. Rebmann, J. Ryder, A.E. Suyker, A. Varlagin, M. Wattenbach, and A. J. Dolman. 2014. Land management and land-cover change have impacts of similar magnitude on surface temperature. Nature Climate Change, 4(5): 389-393 DOI:

Moran, M.S., Ponce Campos, G., Huete, A., Mcclaran, M., Zhang, Y., Hamerlynck, E.P., Augustine, D.J., Gunter, S.A., Kitchen, S.G., Peters, D.C., Starks, P.J., Hernandez, M.. 2014. Functional response of U.S. grasslands to the early 21st century drought. Ecology. 95:2121-2133

Moran, M. S. , Ponce-Campos, G. E., Huete, A., McClaran, M. P., Zhang, Y., Hamerlynck, E. P.,Hernandez, M. 2014. Functional response of U.S. grasslands to the early 21st-century drought. Ecology, 95(8), 2121-2133 doi:

M. Moran, S.; Ponce-Campos, G. E.; Huete, A. R.; McClaran, M. P.; Zhang, Y.; Hamerlynck, E. P.; Augustine, D. J.; Gunter, S. A.; Kitchen, S. G.; Peters, D. P. C.; Starks, P. J.; Hernandez, M. 2014. Functional Response Of U.s. Grasslands To The Early 21St-Century Drought. Ecology 2014, 95 (8), 2121 – 2133 DOI: 

Morgan, M.S., Ponce Campos, G., Huete, A., et al. 2014. Functional response of U.S. grasslands to the early 21st century drought Ecology. 95:2121-2133 DOI:

Moriasi, D. N., Starks, P. J., Guzman, J. A., Garbrecht, J. D., Steiner, J. L., Stoner, J. C., Naney, J. W.. 2014. Upper Washita river experimental watersheds: Reservoir, Groundwater, and stream flow data. Journal of Environmental Quality, 43(4), 1262-1272 doi:

Moriasi, D. N., Starks, P. J., Steiner, J. L., Guzman, J. A., Allen, P. B., & Naney, J. W.. 2014. Upper Washita river experimental watersheds: Physiography data. Journal of Environmental Quality, 43(4), 1298-1309 doi:

Peters, D.C., Loescher, H.W., Sanclements, M.D., Havstad, K.M.. 2014. Taking the pulse of a continent: Expanding site-based research infrastructure for regional- to continental-scale ecology. Ecosphere. 5(3): Article 29

Rigby Jr, J.R., Locke, M.A. 2014. A framework for long-term monitoring and research for agricultural sustainability in the lower Mississippi River Basin. American Geophysical Union. December 15-19, 2014 N/A

Starks, P. J., Fiebrich, C. A., Grimsley, D. L., Garbrecht, J. D., Steiner, J. L., Guzman, J. A., & Moriasi, D. N. 2014. Upper Washita river experimental watersheds: Meteorologic and soil climate measurement networks. Journal of Environmental Quality, 43(4), 1239-1249 doi:

Starks, P. J., Steiner, J. L., Moriasi, D. N., Guzman, J. A., Garbrecht, J. D., Allen, P. B., & Naney, J. W. 2014. Upper Washita river experimental watersheds: Nutrient water quality data. Journal of Environmental Quality, 43(4), 1280-1297 doi:

Starks, P. J., Steiner, J. L., & Stern, A. J.. 2014. Upper Washita River experimental watersheds: Land cover data sets (1974-2007) for two southwestern Oklahoma agricultural watersheds. Journal of Environmental Quality, 43(4), 1310-1318 doi:

Steiner, J. L., Starks, P. J., Garbrecht, J. D., Moriasi, D. N., Zhang, X., Schneider, J. M., Osei, E. 2014. Long-term environmental research: The Upper Washita River experimental watersheds, Oklahoma, USA. Journal of Environmental Quality, 43(4), 1227-1238 doi:

Steiner, J. L., Starks, P. J., Garbrecht, J. D., Moriasi, D. N., Zhang, X., Schneider, J. M., Osei, E. 2014. Long-term environmental research: The Upper Washita River experimental watersheds, Oklahoma, USA. Journal of Environmental Quality, 43(4), 1227-1238 doi:

Syswerda, S. P. and G. P. Robertson. 2014. Ecosystem services along a management gradient in Michigan (USA) cropping systems. Agriculture, Ecosystems and Environment 189:28-35

Tomer, M.D., Sadler, E. J., Lizotte, R. E., Bryant, R. B., Potter, T. L., Moore, M.T., Veith, T. L., Baffaut, C., Locke, M.A., Walbridge, M.R.. 2014. A decade of conservation effects assessment research by the USDA Agricultural Research Service: Progress overview and future outlook. Journal of Soil and Water Conservation Vol. 69(5), 365-373 doi:

Weltz, M.A., Jolley, L., Hernandez, M., Spaeth, K., Rossi, C., Talbot, C., Nearing, M.A., Stone, J.J., Goodrich, D.C., Wei, H., Pierson Jr, F.B., Morris, C.E. 2014. Estimating conservation needs for rangelands using USDA National Resources Inventory Assessments. American Society of Agricultural and Biological Engineers. 57(6):1-12 doi:

Weltz, M.A., Spaeth, K., Taylor, M.H., Rollins, K., Pierson, F., Jolley, L., Nearing, M., Goodrich, D., Hernandez, M., Nouwakpo, S.K., Rossi, C. 2014. Cheatgrass invasion and woody species encroachment in the Great Basin: Benefits of conservation. Journal of Soil and Water Conservation. 69(2):39A-44A doi:

Winstral, A.H., Marks, D.G. 2014. Long-term snow distribution observations in a mountain catchment: assessing variability, time stability, and the representativeness of an index site. Water Resources Research. 50:293-305 doi:

Xiao, J., S.V. Ollinger, S. Frolking, G.C. Hurtt, D.Y. Hollinger, K.J. Davis, Y. Pan, X. Zhang, F. Deng, J. Chen, D.D. Baldocchi, B.E. Law, M.A. Arain, A.R. Desai, A. D. Richardson, G. Sun, G., B. Amiro, H. Margolis, L. Gu, R.L. Scott, P.D. Blanken, A. Suyker. 2014. Data-driven diagnostics of terrestrial carbon dynamics over North America. Agricultural and Forest Meteorology, 197(0): 142 – 157

Zhang, X. C., Garbrecht, J. D., Steiner, J. L., & Blazs, R. L. 2014. Upper Washita River experimental watersheds: Sediment database. Journal of Environmental Quality, 43(4), 1273-1279 doi:

Zhang, X.; M. Moran, S.; Zhao, X.; Liu, S.; Zhou, T.; Ponce-Campos, G. E.; Liu, F. 2014. Impact Of Prolonged Drought On Rainfall Use Efficiency Using Modis Data Across China In The Early 21St Century. Remote Sensing of Environment 2014, 150, 188 – 197 DOI:


Gelfand, I., R. Sahajpal, X. Zhang, C.R. Izaurralde, K.L. Gross and G.P. Robertson. 2013. Sustainable bioenergy production from marginal lands in the US Midwest. Nature 493: 514-517 doi:

Hatfield, J.L., R.M. Cruse, and M.D. Tomer. 2013. Convergence of agricultural intensification and climate change in the Midwestern United States: implications for soil and water conservation. Mar. Freshwater Res. 64:423-435 DOI:

Lajtha, K. and J. Jones. 2013. Trends in cation, nitrogen, sulfate and hydrogen ion concentrations in precipitation in the United States and Europe from 1978 to 2010: A new look at an old problem. Biogeochemistry 116:303-334

Ponce Campos, G., Moran, M.S., Huete, A., Zhang, Y., Bresloff, C., Huxman, T., Eamus, D., Bosch, D.D., Buda, A.R., Gunter, S.A., Scalley, T., Kitchen, S., McClaran, M., McNab, W., Montoya, D., Morgan, J.A., Peters, D.C., Sadler, E.J., Seyfried, M.S., Starks, P.J. 2013. Ecosystem resilience despite large-scale altered hydro climatic conditions. Nature. 494:349-352 doi:

Zhang, Y., Susan Moran, M., Nearing, M. A., Ponce Campos, G. E., Huete, A. R., Buda, A. R., Starks, P. J. 2013. Extreme precipitation patterns and reductions of terrestrial ecosystem production across biomes. Journal of Geophysical Research: Biogeosciences, 118(1), 148-157 doi:


Bestelmeyer, B. T., R. E. Estell, and K. M. Havstad. 2012. Big questions emerging from a century of rangeland science and management. Rangeland Ecology & Management 65:543-544

Fay, P.A., Jin, V.L., Way, D.A., Potter, K.N., Gill, R.A., Jackson, R.B., Polley, H.W. 2012. Soil-mediated effects of subambient to increased carbon dioxide on grassland productivity. Nature Climate Change. 2:742-746

Gitelson, A.A., Y. Peng, J. Masek, D.C. Rundquist, S. Verma, A. Suyker, J.M. Baker, J.L. Hatfield, and T. Meyers. 2012. Remote sensing of crop productivity with Landsat data. Remote Sensing Environ. 121:404-414

Moriasi, D. N., Wilson, B. N., Douglas-Mankin, K. R., Arnold, J. G., & Gowda, P. H. 2012. Hydrologic and water quality models: Use, calibration, and validation. Transactions of the ASABE, 55(4), 1241-1247

Osei, E., Moriasi, D., Steiner, J. L., Starks, P. J., & Saleh, A. 2012. Farm-level economic impact of no-till farming in the Fort Cobb Reservoir Watershed. Journal of Soil and Water Conservation, 67(2), 75-86 doi:

Polley, H.W., Jin, V.L., Fay, P.A.. 2012. Feedback from plant species change amplifies CO2 enhancement of grassland productivity. Global Change Biology. 18:2813-2823

Robertson, G. P., S. L. Collins, D. R. Foster, N. Brokaw, H. W. Ducklow, T. L. Gragson, C. Gries, S. K. Hamilton, A. D. McGuire, J. C. Moore, E. H. Stanley, R. B. Waide, and M. W. Williams. 2012. Long-term ecological research in a human-dominated world. Bioscience 62:342-353

Syswerda, S. P., B. Basso, S. K. Hamilton, J. B. Tausig, and G. P. Robertson. 2012. Long-term nitrate loss along an agricultural intensity gradient in the Upper Midwest USA. Agriculture, Ecosystems & Environment 149:10-19


Mark R. Walbridge and Steven R. Shafer. 2011. A Long-Term Agro-Ecosystem Research (LTAR) Network for Agriculture, The Fourth Interagency Conference on Research in the Watersheds, 26–30 September 2011, Fairbanks, AK.


Nayak, A., Marks, D., Chandler, D., Seyfried, M. 2010. Long-term snow, climate and streamflow trends at the Reynolds Creek Experimental Watershed, Owyhee Mountains, Idaho, United States. Water Resources Research. 46(6):W06519 doi:


Emmerich, W. E., and C. L. Verdugo. 2008. Long-term carbon dioxide and water flux database, Walnut Gulch Experimental Watershed, Arizona, United States. Water Resour. Res., 44, W05S09 DOI:

Feyereisen, G.W., Lowrance, R., Strickland, T.C., Bosch, D.D., Sheridan, J.M.. 2008. Long-term stream chemistry trends in the southern Georgia Little River Experimental watershed. Journal of Soil and Water Conservation 63(6): 475-486 doi:

Goodrich, D. C., T. O. Keefer, C. L. Unkrich, M. H. Nichols, H. B. Osborn, J. J. Stone, and J. R. Smith. 2008. Long-term precipitation database, Walnut Gulch Experimental Watershed, Arizona, United States. Water Resour. Res., 44, W05S04 DOI:

Keefer, T. O., M. S. Moran, and G. B. Paige. 2008. Long-term meteorological and soil hydrology database, Walnut Gulch Experimental Watershed, Arizona, United States. Water Resour. Res., 44, W05S07 DOI:

M. Moran, S.; Peters, D. P. C.; McClaran, M. P.; Nichols, M. H.; Adams, M. B. 2008. Long-Term Data Collection At Usda Experimental Sites For Studies Of Ecohydrology. Ecohydrology 2008, 1 (4), 377 – 393 DOI:

G. Philip Robertson, Vivien G. Allen, George Boody, Emery R. Boose, Nancy G. Creamer, Laurie E. Drinkwater, James R. Gosz, Lori Lynch, John L. Havlin, Louise E. Jackson, Steward T. A. Pickett, Louis Pitelka, Alan Randall, A. Scott Reed, Timothy R. Seastedt, Robert B. Waide, And Diana H. Wall. 2008. Long-term Agricultural Research: A Research, Education, and Extension ImperativeBioScience, Vol. 58 No. 7.

Stone, J. J., M. H. Nichols, D. C. Goodrich, and J. Buono. 2008. Long-term runoff database, Walnut Gulch Experimental Watershed, Arizona, United States. Water Resour. Res., 44, W05S05 DOI:



The USDA Agricultural Research Service (ARS) Long-Term Agroecosystem Research network consists of 18 Federal and university agricultural research sites with an average of over 50 years of history. The goal of this research network is to ensure sustained crop and livestock production and ecosystem services from agroecosystems, and to forecast and verify the effects of environmental trends, public policies, and emerging technologies.