Sensitivity of agricultural runoff loads to rising levels of CO2 and climate change in the San Joaquin Valley watershed of California.

The Soil and Water Assessment Tool (SWAT) was used to assess the impact of climate change on sediment, nitrate, phosphorus and pesticide (diazinon and chlorpyrifos) runoff in the San Joaquin watershed in California. This study used modeling techniques that include variations of CO(2), temperature, and precipitation to quantify these responses. Precipitation had a greater impact on agricultural runoff compared to changes in either CO(2) concentration or temperature. Increase of precipitation by +/-10% and +/-20% generally changed agricultural runoff proportionally. Solely increasing CO(2) concentration resulted in an increase in nitrate, phosphorus, and chlorpyrifos yield by 4.2, 7.8, and 6.4%, respectively, and a decrease in sediment and diazinon yield by 6.3 and 5.3%, respectively, in comparison to the present-day reference scenario. Only increasing temperature reduced yields of all agricultural runoff components. The results suggest that agricultural runoff in the San Joaquin watershed is sensitive to precipitation, temperature, and CO(2) concentration changes.

[1]  K. Eckhardt,et al.  Potential impacts of climate change on groundwater recharge and streamflow in a central European low mountain range , 2003 .

[2]  John R. Williams,et al.  EPIC-erosion/productivity impact calculator: 1. Model documentation. , 1990 .

[3]  Xiao Zhang,et al.  Impacts of Climate Change , 2007 .

[4]  C. W. Culpepper,et al.  Response of sweet corn to varying temperatures from time of planting to canning maturity , 1932 .

[5]  R. Hotchkiss,et al.  IMPACTS OF CLIMATE CHANGE ON WATER YIELD IN THE UPPER WIND RIVER BASIN 1 , 2000 .

[6]  Mikhail A. Semenov,et al.  A serial approach to local stochastic weather models , 1991 .

[7]  S. Chapra.  Surface Water-Quality Modeling , 1996 .

[8]  Terry K. Gerald,et al.  Recovery Version 2.0, A Mathematical Model to Predict the Temporal Response of Surface Water to Contaminated Sediments , 2001 .

[9]  V. Chaplot.  Water and soil resources response to rising levels of atmospheric CO2 concentration and to changes in precipitation and air temperature , 2007 .

[10]  Nigel W. Arnell,et al.  Factors controlling the effects of climate change on river flow regimes in a humid temperate environment , 1992 .

[11]  T. Tamm,et al.  Nutrient runoff dynamics in a rural catchment: influence of land-use changes, climatic fluctuations and ecotechnological measures , 2000 .

[12]  Dionysia Panagouoa.  Hydrological response of a medium-sized mountainous catchment to climate changes , 1992 .

[13]  Fayçal Bouraoui,et al.  Climate change impacts on nutrient loads in the Yorkshire Ouse catchment (UK) , 2002 .

[14]  J. Domagalski,et al.  Occurrence and transport of diazinon in the Sacramento River, California, and selected tributaries during three winter storms, January-February 2000 , 2002 .

[15]  Ashutosh S. Limaye,et al.  ASSESSMENT OF IMPACTS OF CLIMATE CHANGE ON WATER QUALITY IN THE SOUTHEASTERN UNITED STATES 1 , 1999 .

[16]  Bruce R. Johnson,et al.  Characterizing dependence of pesticide load in surface water on precipitation and pesticide use for the Sacramento River watershed. , 2004, Environmental science & technology.

[17]  R M Gifford,et al.  Stomatal sensitivity to carbon dioxide and humidity: a comparison of two c(3) and two c(4) grass species. , 1983, Plant physiology.

[18]  J. Houghton,et al.  Climate change 2001 : the scientific basis , 2001 .

[19]  Minghua Zhang,et al.  Dynamic modeling of organophosphate pesticide load in surface water in the northern San Joaquin Valley watershed of California. , 2008, Environmental pollution.

[20]  K. Abbaspour,et al.  Estimation of freshwater availability in the West African sub-continent using the SWAT hydrologic model , 2008 .

[21]  John R. Williams,et al.  LARGE AREA HYDROLOGIC MODELING AND ASSESSMENT PART I: MODEL DEVELOPMENT 1 , 1998 .

[22]  R. Hotchkiss,et al.  Hydrological response to climate change in the Black Hills of South Dakota, USA , 2001 .

[23]  Heinz G. Stefan,et al.  Simulating Climate Change Effects in a Minnesota Agricultural Watershed , 1998 .

[24]  Richard J. Williams,et al.  Impacts of climate change on the fate and behaviour of pesticides in surface and groundwater--A UK perspective. , 2006, The Science of the total environment.

[25]  Paul D. Capel,et al.  Relations between pesticide use and riverine flux in the Mississippi River basin , 1995 .

[26]  J. Baron,et al.  POTENTIAL EFFECTS OF CLIMATE CHANGE ON SURFACE‐WATER QUALITY IN NORTH AMERICA 1 , 2000 .

[27]  W. G. Knisel,et al.  CREAMS: a field scale model for Chemicals, Runoff, and Erosion from Agricultural Management Systems [USA] , 1980 .

[28]  Corinne Le Quéré,et al.  Climate Change 2013: The Physical Science Basis , 2013 .

[29]  David E. Bosworth,et al.  CENTRAL VALLEY REGIONAL WATER QUALITY CONTROL BOARD , 2001 .

[30]  H. L. Miller,et al.  Climate Change 2007: The Physical Science Basis , 2007 .

[31]  R. A. Leonard,et al.  Movement of Pesticides into Surface Waters , 2018, Pesticides in the Soil Environment: Processes, Impacts and Modeling.

[32]  D. Bromley,et al.  Agricultural Runoff as a Nonpoint Externality: A Theoretical Development , 1982 .

[33]  H. H. Cheng,et al.  Pesticides in the soil environment : processes, impacts, and modeling , 1990 .

[34]  David E. Hinton,et al.  Insecticide‐caused toxicity to Ceriodaphnia dubia (CLADOCERA) in the Sacramento–San Joaquin River delta, California, USA , 2000 .

[35]  J. Domagalski.  NONPOINT SOURCES OF PESTICIDES IN THE SAN JOAQUIN RIVER, CALIFORNIA: INPUT FROM WINTER STORMS, 1992-93 , 1995 .

[36]  Susanna T. Y. Tong,et al.  Climate Change Impacts on Nutrient and Sediment Loads in a Midwestern Agricultural Watershed , 2007 .

[37]  A. Edwards,et al.  Modelling impacts of land use change and climate change on nitrate-nitrogen in the River Don, North East Scotland , 1995 .

[38]  D. Panagoulia.  Hydrological response of a medium-sized mountainous catchment to climate changes , 1991 .

[39]  M. Semenov,et al.  USE OF A STOCHASTIC WEATHER GENERATOR IN THE DEVELOPMENT OF CLIMATE CHANGE SCENARIOS , 1997 .

[40]  M. Lydy,et al.  Distribution and toxicity of sediment-associated pesticides in agriculture-dominated water bodies of California's Central Valley. , 2004, Environmental science & technology.

[41]  Raghavan Srinivasan,et al.  Possible Impacts of Global Warming on the Hydrology of the Ogallala Aquifer Region , 1999 .

[42]  Joel B. Smith,et al.  The impact of climate change on regional systems : a comprehensive analysis of California , 2006 .

[43]  Eike Luedeling,et al.  Climate change sensitivity assessment of a highly agricultural watershed using SWAT , 2009 .

[44]  P. E. O'connell,et al.  River flow forecasting through conceptual models part III - The Ray catchment at Grendon Underwood , 1970 .

[45]  M. Lydy,et al.  Pyrethroid insecticides and sediment toxicity in urban creeks from California and Tennessee. , 2006, Environmental science & technology.

[46]  J. Nash,et al.  River flow forecasting through conceptual models part I — A discussion of principles☆ , 1970 .