The following information is subject to change. Final information will be posted in final program.

 

MONDAY, MARCH 31

I. Agricultural BMP Effectiveness

Moderator: Jose Arumi

Assessment of conservation benefits derived from conservation practices in the United States

Jerry L Lemunyon, USDA Natural Resources Conservation Service, Fort Worth, Texas United States (J. L.Lemunyon, S. R. Potter, and R.L. Kellogg)

 

Revising BMP Efficiencies for the Chesapeake Bay Watershed: Challenges and Lessons Learned

Thomas W Simpson, University of Maryland, College Park, MD United States (T.W. Simpson, S. E. Weammert)

 

Evaluation of selected nutrient management beneficial management practices (BMPs) in Alberta watersheds

Andrea Kalischuk, Alberta Agriculture and Food, Lethbridge, AB Canada

 

 

II. Regulatory Approaches to Watershed Management

Moderator: Theo Dillaha

Using Watershed Management to Implement Total Maximum Daily Loads

Francoise M Brasier, U.S. Environmental Protection Agency, Washington, DC United States

 

Modes and Capacities for Citizens Involvement in the Elqui River Watershed: an Assessment of their Role and Potentialities in the Protection and Management of its Water Resources

Ricardo L Oyarzun, Centro de Estudios Avanzados en Zonas Aridas, La Serena, IV Region Chile (C. Lostarnau, M. Señoret, E. Dattwyler, G. Soto, M.Soto, J. Oyarzun, R. Oyarzun)

 

Key Considerations in Development of Watershed Approaches

Ron Jones, TIAER Tarleton State University, Stephenville, TX

 

 

III. Field Watershed Scale Modeling Part 1

Moderator: Alfereda Acuna

Modeling Impacts of Post DevelopmentWater Quality BMPs

John C Hayes, Clemson University, Clemson, SC United States (J.C. Hayes, B.J. Barfield, S.L. Harp, M.Chalavadi, B. Bates and D. Alexander)

 

Hydrologic and Chemical-Transport Modeling to Assess Watershed-Scale Impacts of Onsite Wastewater Pollutants and Future Scenarios

John E McCray, Colorado School of Mines, Golden, Co United States (J. E.McCray, M.Geza, E. Poeter)

 

Water Quality Modeling Using SWAT Model in Lake Tana Watershed, Ethiopia

Shimelis G Setegn, The Royal Institute of Technology (KTH), Stockholm Sweden (S.G. Setegn, C.H. Green, R. Srinivasan)

 

 

IV. Allocation Issues for Point and Nonpoint Sources

Moderator: Theo Dillaha

Integrated nutrient management to control water pollution. A further step ahead referred to an Italian lake basin

Monica Garnier, Water Research Institute -National Research Council, Bari, BA Italy (M.Garnier, F. Recanatesi, N.Ripa, A.Leone)

 

Optimal placement of conservation practices in the Raccoon River Watershed in Iowa via a Genetic Algorithm – SWAT Interface

Philip W Gassman, Center for Agricultural and Rural Development, Ames, Iowa United States (M.Jha, S. Rabotyagov, P.W. Gassman, H. Feng, T. Campbell)

 

Modeling hydrological response to climate change; experience from two south – central Chilean Watersheds.

Alejandra Stehr, Centro Eula-Chile University of Concepcion, Concepcion, Chile (A.Stehr, P. Debels, J. Arumi)

 

 

V. Emerging Tools in Water Quality Analysis

Moderator: E.William Tollner

Emerging Concepts for Design and Management of Irrigation Canals

Jose Luis Arumi, Universidad de Concepcion, Chillan, Biobio Chile (J. Arumi; D. Rivera; O. Melo)

 

Exploratory Data Analysis Techniques Applied to Hydrological Time Series I: Self-Organizing Maps

Diego Rivera, University of Concepcion, Chillan, Ñuble Chile (D. Rivera, J. Arumi, M.Lillo)

 

Exploratory Data Analysis Techniques Applied to Hydrological Time Series II: Wavelets Transform

Diego Rivera, University of Concepcion, Chillan, Ñuble Chile (D. Rivera, J. Arumi, M.Lillo)

 

 

VI. Field Watershed Scale Modeling Part 2

Moderator: Alfereda Acuna

Spatially-Explicity Simulation of Soil C Dynamics with the Century Model

Carlos G Tornquist, UFRGS, Porto Alegre, RS Brazil (C.G. Tornquist. J. Mielniczuk)

 

Seasonal Nutrient Concentrations in Agricultural Subwatersheds of the Fort Cobb Reservoir Experimental Watershed, Oklahoma, USA

John A Daniel, USAD-Agricultural Research Service, El Reno, OK United States (J . A. Daniel, J. L. Steine)

 

Carbon Improvements to the SWAT Model

Cole H.Green-Rossi, USDA ARS, Temple, TX United States (A. Kemanian, C.H.Green, S. Julich, J.G.Arnold)

 

 

TUESDAY, APRIL 1

VII. Agricultural BMP Effectiveness

Part 2

Moderator: Brian Benham

Stream Ecosystem Health in Rural Mixed Land-Use Watersheds

Marie Claire G Brisbois, Dalhousie University, Halifax, Nova Scotia Canada (M.C. Brisbois, R.Jamieson, R.Gordon., A.Madani, G.Stratton)

 

Use of composted biosolids in urban landscapes

Clyde L Munster, Texas A&M University, College Station, TX United States (C.L.Munster, R. Schnell, D.M.Vietor)

 

A Multi-Criteria Decision Support Model for Assessing Conservation Practice Adoption

George Vellidis, University of Georgia, Tifton, GA United States (G Vellidis, R Lowrance, S Crow, D Bosch, P Murphy)

 

 

VIII. Data Collection to Support Water Quality/Quantity Development

Moderator: Andrea Kalischunk

How does stream order and watershed scale affect water quality monitoring?

Yijun Xu, Louisiana State University, Baton Rouge, Louisiana United States (Y. Jun Xu, A. BryantMason, P. Saksa, A.Viosca)

 

Discovering a Link between Urban Runoff Quality and Population Demographics

Roger H Glick, City of Austin – Watershed Protection, Austin, Texas United States

 

Multi-Criteria Decision Support Model for Assessing Conservation Practice Adoption

George Vellidis, University of Georgia, Tifton, GA (G. Vellidis, R.Lowrance, S. Crow, D. Bosch, P. Murphy)

 

 

IX. Field Watershed Scale Modeling Part 3

Moderator: Diego Rivera

A Model Evaluation and ModificationStrategy

Ramesh P Rudra, University of Guelph, Guelph, Ontario Canada (R.Rudra, A.Singh, S. Das, I.Ahmed, B. Gharabaghi)

 

Utility of AGWA in NRCS Rapid Watershed Assessments

Tim A Sweeney, USDA/NRCS, Little Rock, AR United States (T. Sweeney, D. J. Semmens, Ph.D., D. C. Goodrich, Ph.D.)

 

Using AVSWAT for Investigation and Water Quality Management of Zayandeh-Roud Watershed in Esfahan

Teymour Sohrabi, University of Tehran, Karaj, Tehran Iran (T. M Sohrabi, B. Ababaei)

 

 

X. Watershed Management in Developing Countries

Moderator: Alejandro Stehr

Engineered Conservation Structures Using Discarded Tires

Donald C. Slack, University of Arizona, Tucson, Arizona United States (D. C. Slack, G.Carcia, A.Frayre, R.Segovia, S. Hoenig, R.Roth, R.Sota)

 

Hydrology of forested and cultivated watersheds in upland landscapes of the Luangwa River valley, Zambia

Conrad Heatwole, Virginia Tech, Blacksburg, VA United States (C, Heatwole, Y, Gu Her, D, Lewis, A, Travis)

 

Quick Thematic Assessment on Watershed Management and Upland Development in Northern Mindanao,Philippines

Gloria A Oanes, Mindanao State University, Iligan City, Lanao del Norte Philippines

 

 

XI. Environmental Legislation, Regulation and Education Applicable to Agriculture in Developing Countries

Moderator: Brian Benham

Comparison of Agricultural Application of Pulp Mill Residues and Traditional Soil Amendments: The Brazilian Case and International Legislation

Renata Maltz, Vida Desenvolvimento Ecologico Ltda, Porto Alegre, RS Brazil

 

Understanding water resources through a High School-University cooperative project development

Cecile du Mortier, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Buenos Aires, Buenos Aires Argentina (M. Míguez, C. du Mortier, M. Vaccaro, M.Inés Morando, A. Fernández Cirelli)

Payments for watershed services in developing countries

Theo A Dillaha, Virginia Tech, Blacksburg, VA United States (T. Dillaha, P. Ferraro, M.Huang, D. Southgate, S. Upadhyaya, S.Wunder)

 

 

XII. Field Watershed Scale Modeling Part 4

Moderator: Alejandro Dusailliant

A Distributed Hydrological Model of Irrigation and Agricultural Land Use at Catchment Scale: An Integrated Catchment Model Applied to Chile, IIV Region

Arnold R.Thorsten, University of Hohenheim (A.R.Thorsten, H.Uribe, T. Berger )

 

Surface Water Interactions with Shallow Groundwater in a Hydrologically Well- Bounded Valley in Central Chile

Jose Luis Arumi, Universidad de Concepcion, Chillan, Biobio Chile (J. Arumi; D. Rivera;E. Holzapfel, A. Fernald)

 

Use of CEEOT-SWAPP Modeling System for Targeting and Evaluating Environmental Pollutants

Ali Saleh, Texas Institute for Applied Environmental Reseach (TIAER), Stephenville, Texas United States (A.Saleh, E.Osei, O. Gallego)

 

 

XIII. Bacterial Monitoring, Source Identification and Control Practices

Moderator: Oscar Link

Evaluation of Microbial Water Quality Indicators in an Agricultural Watershed

Daniel R Shelton, USDA/Agricultural Research Service, Beltsville, MD United States (D.R. Shelton, J.S. Karns, J.S. Van Kessel, A.Sadeghi, C. Coppock and Y.A. Pachepsky)

 

Growing Season Surface Water Loading of Fecal Bacteria within a Rural Watershed

Andrew C Sinclair, Dalhousie University, Halifax, Nova Scotia Canada (A.Sinclair, D. Hebb, R. Jamieson, R.Gordon, K.Benedict, K.Fuller, G. Stratton, and A.Madani)

 

Comparing Alternative Methods of Simulating Bacteria Concentrations with HSPF Under Low-Flow Conditions

Brian Benham, Virginia Tech, Blacksburg, VA United States (K.Hall, B. Benham, G. Yagow)

 

 

XIV. Management Practices for Sediment Control

Moderator: Alejandro Stehr

Management Practices for Sediment Control by Using Vetiver Technology: Results of a Case Study from a Typical Watershed area in Southern Guam

Mohammad H Golabi, University of Guam, Mangilao, Guam-USA, GU United States (M.H. Golabi, D. Minton, C. Iyekar)

 

Reduction of Interrill Erosion by different application methods of Polyacrylamide and Gypsum

Salvador F Acuna, Purdue University/USDA-ARS NSERL, West Lafayette, IN United States (S. F. Acuna, L.D. Norton, E. Ventura)

 

APPARENT INCREASES IN RAINFALL EXTREMES

Trevor Dickinson, University of Guelph, Guelph, Ontario Canada (T. Dickinson, R.Rudra)

 

 

XV. Performance and Validation of Models for Water Quality/Quantity Part 1

Moderator: Antonio Lo Porto

Uncertainty Consideration in Watershed Scale Models

Adel Shirmohammadi, University of Maryland, College Park, MD United States (A.Shirmohammadi, A.Sexton, H.Montas)

 

Uncertainties in a watershed modeling

Luciana Sarmento, ANA, Brasília, DF Brazil (L. Sarmento, S. Koide)

 

Uncertainty Analysis of Artificial Neural Networks and Neuro-Fuzzy Models in River Flow Forecasting

Ashkan Farokhnia, Tarbiat modares university, Tehran, Tehran Iran (A. Fraokhnia, S. Morid)

 

 

XVI. Performance Validation of Water Quality/Quantity Part 2

Moderator: Alex Schwartz

Assessment of Riparian Buffers for Protecting Streams from Small and Large Scale Agricultural Developments in Kenya

Ernest W Tollner, University of Georgia, Athens, GA United States (E.W. Tollner, H.Ssegane)

 

Modeling transport and treatment of organic trace pollutants during riverbank filtration

John McCray, Colorado School of Mines, Golden, Co United States (J. E.McCray, G.L.Oldham, J. E.Drewes, C. Hoppe)

 

Water Resources Assessment at Piracicaba,Capivari and Jundiaí River Basin:A Dynamic Systems Approach

Rodrigo M Sánchez-Román, Universidade de São Paulo, Piracicaba, São Paulo Brazil (R.M. Sánchez-Román, M. V. Folegatti, A.M.G.Orellana-González)

 

Hydrological Modeling of a Complex Irrigation District in the Central Valley of Chile

Hamil L.Uribe, University of Concepcion (H. Uribe, T. Arnold, T. Berger, J. Arumí)

 

 

XVII. Pollution Control/Management Sources for Point and Nonpoint Sources

Moderator: Roberto Urrutia

Response of Soil, Water and Plants to Fertilization with Mineral and Organic Nitrogen Fertilizers

Vito I Sardo, University of Catania, Catania, Sicily Italy (M.Russo, R.Iacona, E.Verde, A.Belligno, V.I.Sardo)

 

Removal of iron and manganese existing in water in presence of sulfate by rapid sand filter

Hossein Banejad, Professor Assistance, Hamedan, Hamedan Iran (H.Banejad, R.Pirtaj Hamedani, V. Daneshi)

 

Study of Low Impact Development (LID) as a NewWatershed Management Concept in Greater Bandung, Indonesia

Robby Y. Tallar, Maranatha Public Services and Research Center

 

 

XVIII. Wetlands, Stream and River Restoration, Biomonitoring and Land Use Impacts on Downstream Water Bodies

Moderator: Gladys Vidal

Restoration of a prior converted farm in Eastern NC with multiple target wetland communities

Michael R Burchell, North Carolina State University, Raleigh, NC United States (M.R. Burchell, R.O. Evans, K.L.Bass, S.W. Broome, J.D. Wright, and J.A.Lindgren)

 

Stream Restoration Project Evaluation in North Carolina, USA

Gregory D Jennings, North Carolina State University, Raleigh, NC United States (G. Jennings, D. Penrose, B. Doll, J. Zink, Z.Price, L. Rozzell, K.Hall, M.Shaffer)

 

Evaluation of Flow Regime in the Mediterranean Streams Using a Flashiness Index

Antonio Lo Porto, Water Research Institute (IRSA-CNR), Bari Italy (A.M.De Girolamo, A.Lo Porto, D. De Luca, A.Abouabdillah, G.Santese)

 

 

WEDNESDAY, APRIL 2

XIX. Agricultural BMP Effectiveness Part 3

Moderator: Reza Savabi

Soil Contamination Potential of Emergency Livestock Mortality Composting

Thomas D Glanville, Iowa State University, Ames, Iowa United States (T.D. Glanville, H.K.Ahn, T.L. Richard, J.D. Harmon)

 

Effect of Liquid and Dry PAM Applications on Sediment Concentrations in Surface Runoff from Furrow-irrigated Fields.

Blaine R Hanson, University of California, Davis, Davis, California United States (D.Weston, R. Long, A.Fulton)

 

Examination of Waste Disposal Contamination of Groundwater in Akure, Ondo State, Nigeria

Oyebola A Elemide, Federal College of Agriculture Akure Ondostate Nigeria, Akure, Ondo State Nigeria

 

 

XX. Field Watershed Scale Modeling Part 5

Moderator: Adel Shirmohamadi

Impacts of Land Cover Change During and After Urban Development

Billy J Barfield, Woolpert, INC, Stillwater, OK United States (B.J. Barfield, J.C. Hayes, S.L. Harp, M.Chalavadi, S.Yeri, B. Bates, D. Alexander)

 

Modeling Impacts of Construction during Urban Development

Sam L Harp, Oklahoma State University, Perkins, OK United States (B.J. Barfield, J.C. Hayes, S.L. Harp, S.Yeri, B. Bates, D. Alexander)

 

Assessment of Bioenergy-Related Scenarios for the Boone River Watershed in North Central Iowa

Philip W Gassman, Center for Agricultural and Rural Development, Ames, Iowa United States (P. W. Gassman, S. Secchi, M.Jha)

 

 

XXI. Water Quality Issues for Forest and Rangelands

Moderator: Devendra M.Amatya

Effects of Thinning on Hydrology and Water Quality of a Drained Pine Forest in Coastal North Carolina

Devendra M Amatya, USDA Forest Service, Charleston, SC United States (D.M. Amatya, R.W. Skaggs)

 

Plani-S: a tool to protect water quality on forest roads in Canada

Mark Partington, Feric, a division of PInnovations, Pointe-Claire, Quebec Canada

 

Hydrologic impacts of converting grassland to managed forest in Uruguay

George M Chescheir, N. C. State University, Raleigh, NC United States (G.M.Chescheir, R.W. Skaggs, D.M.Amatya)

 

 

XXII. Performance and Validation of Models for Water Quality/Quantity Part 3

Moderator: Claudio Vadovinos

Modeling the Effect of Soil Amendments on Water Balance and Water Quality

M.Reza Savabi, USDA-ARS, Miami, FL United States (M.R.Savabi, D. Shinde, S. Reed, K. Knomo)

 

Effects of Mining Activity on the Water Quality of the Choapa River, North Central Chile

Ricardo L Oyarzun, Centro de Estudios Avanzados en Zonas Aridas, La Serena, Chile (A. Parra, J. Oyarzún, H.Maturana, N.Krestchmer, F. Meza, R.Oyarzún)

 

Hydrosystems Modeling in an Andean River Basin Under Development and Climate Change Scenarios

Juan Pablo Schuster, Universidad de Chile, Santiago, Santiago Chile (J. Schuster, J. McPhee)

 

 

XXIII. Water Quality Standards

Moderator: Phillip W. Gassman

Development and Verification of JAZZ1D: A Stream Temperature Model

Oscar Link, University of Concepcion (O. Link, A. Espinoza and A.Stehr)

 

A Discussion of Policy and Science for Developing Nutrient Water Quality Standards for Engineered Reservoirs

Tami Younos, Virginia Water Resources Research Center, Blacksburg, Virginia United States (T. Younos, C. E.Zipper, J. L. Walker, M. Pavlick)

 

Water Quality Status in Tanks of Tunga Left Bank Command, Karnataka,India

Basavaraja Simpi, Department of P.G.Studies and Research in Applied Geology, Kuvempu University, Shimoga, Karnataka India (B. Simpi, S. Murthy K.N)

 

 

XXIV. Advances in Water Quality/Quantity

Moderator: Ricardo Barra

Advances in Irrigation Water Disinfection by Solar Photocatalysis

Felipe de la Hoz, Univeristy of Concepcion, Chillan Chile (F. de la Hoz, J. Arumi, D. Rivera)

 

Ground Water Level and Deep Percolation Studies: Preliminary Results for Water Resource Estimations for Drought Monitoring

John A Daniel, USDA-Agricultural Research Service, El Reno, OK United States (J . A.Daniel, N.Osborn, C. Fiebich)

 

Integration of applicable techniques to affected river bed contamination study by the metallic mining industry

Ana M Chavez Sernaque, Universidad De Piura, Piura Peru (A.Chávez Sernaqué, J. García Iglesias)

 

 

POSTER SESSION

 

Poster #            Title and Authors

1                      Non-Destructive Measurement on Crop Water Stress Based on Microcomputer

                                    Shifeng yang, Tianjin University Of Science and Technology, Tianjin City China (Y. Shifeng, L.

                                    Haijian, Y.Ye, C. Hao)

2                      Watershed model evaluation of agricultural ditch drainage control structures for improved water quality

                                    Ali M Sadeghi, USDA-ARS, Beltsville, Maryland United States (A.Sadeghi, G.McCarty, D. Moriasi, D. Hively)

3                      Decision support system for catchment management with focus on mining impacts and arid zones – Elqui Valley, Chile

Nicole Kretschmer, Centro de Estudios Avanzados en Zonas Aridas, La Serena, Chile (N. Kretschmer, A.Buxo, L.Ribeiro, G.Soto, M.Soto, R.Oyarzún, M. Venegas)

4                      Non-Destructive Measurement on Crop Water Stress Based on Microcomputer

                                    Shifeng Yang, Tianjin University of Science and Technology, Tianjin China (Y. Shifeng, L.Jiankai, Y.Ye, W. Xiuqing, C. Hao)

5                      Reducing Overland Flow by Means of Grass Hedges – Experimental Results in Northern China

                                    Ying Ju Wu, Beijing Academy of Agricultural and Forestry Sciences, Beijing China (D. Huang., W. J. Teng, J.Y.Wu, V. I.Sardo)

6                      Sediment control with rice straw mat covers from sloping fields - a rainfall simulation study

                                    Joongdae Choi, Kangwon National University, Chuncheon, Gangwon-do South Korea (J. Choi, M. Shin, Y. Choi, T. Kang, M. Jung, C. Yoon)

7                      In-Situ Monitoring of Runoff and Sediments in Bayou Wikoff Sub-Watershed

                                    H M Selim, Louisiana State University, Baton Rouge, Louisiana United States (R.L.Bengtson)

8                      Water Quality Status in Tanks of Tunga Left Bank Command, Karnataka, India

                                    Basavaraja Simpi, Dept. of P.G.Studies & Research in Applied Geology, Kuvempu University, Shimoga, Karnataka India (B. Simpi, S. Murthy)

10                     AGRIRISK:A Decision Support System Integrated to SWAT to Compute Hydrologic & NPS Pollution Risk Analysis in Agricultural Watersheds

                                    Gabriel G Vazquez-Amabile, Purdue University, Tandil, Buenos Aires Argentina

11                     Construction of a Digital Hydrologic Soil Group Map for Argentina to Simulate Runoff using GIS - Hydrologic Models

                                    Gabriel G Vazquez-Amabile, University of La PLata, Tandil, Buenos Aires Argentina (G.G. Amabile, P.A Mercuri, F. Gaspari, B.A.Engel)

12                     Fractured Aquifers Hydrological Behavior in Small Catchments

Rosangela Cezar Pimentel Pontara, UFMS Federal University of Mato Grosso do Sul, Brazil, Corumbá, MS Brazil (R.Cezar Pimentel Pontara; S. Koide;N.Aldo Campana)

13                     Evaluation of BMPs to reduce pollution at the farm level in Texas

                                    Juan Enciso, Texas A&M University, Weslaco, TX United States (J. Enciso, L. Garza, K. Wagner, R.Miranda, W. Rosenthal, A. Jones.)

14                     Macro-level analysis of CNMPs in the Ohio River Basin

                                    Edward Osei, Texas Institute for Applied Environmental Research, Stephenville, Texas United States (E.Osei, B. Du, L.Hauck, A. Tanter)

15                     Impacts of the Agriculutral Expansion in the Brazilian Legal Amazon on the Surfance Runoff Generation: A Study Case

                                    Eduardo E Maeda, Brazilian National Institute for Space Research - INPE, São Paulo Brazil (E. Maeda, A. Formaggio, Y.r Shimabukuro)

16                     Using QUAL2K to Investigate a Dissolved Oxygen TMDL for Oyster Creek, Texas

                                    Bing Du, Texas Institute for Applied Environmental Research, Stephenville, TX United States (B. Du and L.M.Hauck)

17                     Refinement and Validation of SWAT Model For Central Texas TMDL

                                    Ali Saleh, TIAER, Stephenville, Texas United States (J.B. Houser, A.Saleh, L.M.Hauck)

18                     Interactions of Woody Biofuel Feedstock Production Systems with Water Resources: Considerations for Sustainability

                                    Devendra M Amatya, USDA Forest Service, Charleston, SC United States (C.C. Trettin, D.M. Amatya, M. Colman)

19                     Swine Wastewater Treatment by a Combined System: Preliminary Results

                                    Gladys Vidal, University of Concepcion (M. Belmonte, M. Jarpa, J.L.Arami, G.Vidal)

20                     Adaptive Watershed Management in the South American Highlands

                                    Victor Barrera, INIAP (Alwang, Barrera and Andrade)

21                     Wet-HAWQ: AWetland Model for TMDL Assessment

                                    Jason Ulrich, University of Minnesota (J . Ulrich, H. Munir, D. Canelon, J. Nieber, K.Brooks, J. Magner, B. Wilson)

22                     Adaptive Watershed Management in Tiraque, Bolivia

                                    Ruben Botello, PROINPA (R.Botello, A.K. Saavedra, O. Vargas, I.Figueroa, J. Alwang)

23                     Dairy Market Chains in IndigenousCommunities of the Chimbo RiverWatershed

                                    Heather Weeks, SANREM-CRSP, Virginia, United States (H. Weeks)

24                     Assessment of Bioenergy-Related Scenarios on Soil Carbon for the Boone River Watershed in North Central Iowa using Century and EPIC

                                    Philip W. Gassman, Iowa State University, Iowa, United States (P.W. Gassman, C. Tornquist, S. Secchi, T. Cambell)

25                     Land Use Change on the Intensive and Extensive Margin in a Biofuels Hotspot:The Case of Iowa, USA

                                    Philip W. Gassman, Iowa State University, Iowa, United States (S. Secchi, L. Kurklaova, P.W. Gassman, C. Hart)