Terrestrial - Agriculture

EPA Grant Number: R825433C067
Subproject: this is subproject number 067 , established and managed by the Center Director under grant R825433
(EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).

Center: EERC - Center for Ecological Health Research (Cal Davis)
Center Director: Rolston, Dennis E.
Title: Terrestrial - Agriculture
Investigators: Wilson, Barry W. , Ferris, Howard , Fry, D. Michael , Lasley, Bill L. , Scow, Kate
Institution: University of California - Davis
EPA Project Officer: Levinson, Barbara
Project Period: June 30, 1995 through June 30, 1998
Project Amount: Refer to main center abstract for funding details.
RFA: Exploratory Environmental Research Centers (1992) RFA Text |  Recipients Lists
Research Category: Targeted Research

Objective:

The goal of this project is to identify and characterize factors that adversely affect terrestrial agricultural, wild and associated habitats. This project seeks to identify biomarkers of exposure and early warning signs of adverse effects to ecosystems and investigates interactions among environmental stressors.

Approach:

The Terrestrial-Agriculture Project focuses on orchards, cultivated and uncultivated fields, streams and uncultivated areas such as hedgerows, mainly in Yolo County. Stresses in this ecosystem include pesticides and herbicides, other chemicals such as metals and fertilizers, water, temperature, agricultural practices, and quality of habitat. Emphasis is on two or three putative stressors, including pesticides, likely to be operative at several trophic levels.

The results from the several trophic levels of inquiry will be incorporated into a vertically-integrated model of the effects of stressors using:

    a. GIS plots of land use, physical parameters, and pesticide applications,
    b. fate and transport data on selected chemicals,
    c. stress and toxicity data obtained from laboratory and field studies and
    d. demographic data.

From this research, the investigators will derive "stress" models of the responses of selected organisms and trophic levels. These "models" (whether conceptual or mathematical) will be driven by the data. The goals of such constructs are to:

    a. clarify the relationships between the organisms, habitats and parameters studied,
    b. predict the effects of stressors, and
    c. ultimately, establish the rate-limiting factors affecting the health of wildlife and agricultural soil in the study area.

Expected Results:

Working in both the laboratory and the field, the objectives and expected results of the Terrestrial-Agriculture Project are:

    1. developing biomarkers of exposure to pesticides and other stressors,
    2. preparing to test the biomarkers on selected ecosystems,
    3. examining the health of agroecosystems,
    4. participating in discussions on developing and testing a terrestrial ecological risk assessment model.

Supplemental Keywords:

Aquatic ecosystem, California, environmental stress, land use, agricultural ecosystem, pesticides, biomarkers, risk assessment, ecosystem modeling, fate and transport., RFA, Scientific Discipline, Ecosystem Protection/Environmental Exposure & Risk, Ecology, exploratory research environmental biology, Ecosystem/Assessment/Indicators, Ecosystem Protection, Ecological Effects - Environmental Exposure & Risk, Ecology and Ecosystems, Agronomy, Ecological Indicators, Agricultural Engineering, habitat, biomarkers, wildlife, pesticides, agricultural environments, multiple stressors, ecosystem indicators, terrestrial, agriculture, agrochemcial, ecosystem, ecosystem stress, herbicides, agro ecosystems, agriculture ecosystems


Main Center Abstract and Reports:

R825433    EERC - Center for Ecological Health Research (Cal Davis)

Subprojects under this Center: (EPA does not fund or establish subprojects; EPA awards and manages the overall grant for this center).
R825433C001 Potential for Long-Term Degradation of Wetland Water Quality Due to Natural Discharge of Polluted Groundwater
R825433C002 Sacramento River Watershed
R825433C003 Endocrine Disruption in Fish and Birds
R825433C004 Biomarkers of Exposure and Deleterious Effect: A Laboratory and Field Investigation
R825433C005 Fish Developmental Toxicity/Recruitment
R825433C006 Resolving Multiple Stressors by Biochemical Indicator Patterns and their Linkages to Adverse Effects on Benthic Invertebrate Patterns
R825433C007 Environmental Chemistry of Bioavailability in Sediments and Water Column
R825433C008 Reproduction of Birds and mammals in a terrestrial-aquatic interface
R825433C009 Modeling Ecosystems Under Combined Stress
R825433C010 Mercury Uptake by Fish
R825433C011 Clear Lake Watershed
R825433C012 The Role of Fishes as Transporters of Mercury
R825433C013 Wetlands Restoration
R825433C014 Wildlife Bioaccumulation and Effects
R825433C015 Microbiology of Mercury Methylation in Sediments
R825433C016 Hg and Fe Biogeochemistry
R825433C017 Water Motions and Material Transport
R825433C018 Economic Impacts of Multiple Stresses
R825433C019 The History of Anthropogenic Effects
R825433C020 Wetland Restoration
R825433C021 Sierra Nevada Watershed Project
R825433C022 Regional Transport of Air Pollutants and Exposure of Sierra Nevada Forests to Ozone
R825433C023 Biomarkers of Ozone Damage to Sierra Nevada Vegetation
R825433C024 Effects of Air Pollution on Water Quality: Emission of MTBE and Other Pollutants From Motorized Watercraft
R825433C025 Regional Movement of Toxics
R825433C026 Effect of Photochemical Reactions in Fog Drops and Aerosol Particles on the Fate of Atmospheric Chemicals in the Central Valley
R825433C027 Source Load Modeling for Sediment in Mountainous Watersheds
R825433C028 Stress of Increased Sediment Loading on Lake and Stream Function
R825433C029 Watershed Response to Natural and Anthropogenic Stress: Lake Tahoe Nutrient Budget
R825433C030 Mercury Distribution and Cycling in Sierra Nevada Waterbodies
R825433C031 Pre-contact Forest Structure
R825433C032 Identification and distribution of pest complexes in relation to late seral/old growth forest structure in the Lake Tahoe watershed
R825433C033 Subalpine Marsh Plant Communities as Early Indicators of Ecosystem Stress
R825433C034 Regional Hydrogeology and Contaminant Transport in a Sierra Nevada Ecosystem
R825433C035 Border Rivers Watershed
R825433C036 Toxicity Studies
R825433C037 Watershed Assessment
R825433C038 Microbiological Processes in Sediments
R825433C039 Analytical and Biomarkers Core
R825433C040 Organic Analysis
R825433C041 Inorganic Analysis
R825433C042 Immunoassay and Serum Markers
R825433C043 Sensitive Biomarkers to Detect Biochemical Changes Indicating Multiple Stresses Including Chemically Induced Stresses
R825433C044 Molecular, Cellular and Animal Biomarkers of Exposure and Effect
R825433C045 Microbial Community Assays
R825433C046 Cumulative and Integrative Biochemical Indicators
R825433C047 Mercury and Iron Biogeochemistry
R825433C048 Transport and Fate Core
R825433C049 Role of Hydrogeologic Processes in Alpine Ecosystem Health
R825433C050 Regional Hydrologic Modeling With Emphasis on Watershed-Scale Environmental Stresses
R825433C051 Development of Pollutant Fate and Transport Models for Use in Terrestrial Ecosystem Exposure Assessment
R825433C052 Pesticide Transport in Subsurface and Surface Water Systems
R825433C053 Currents in Clear Lake
R825433C054 Data Integration and Decision Support Core
R825433C055 Spatial Patterns and Biodiversity
R825433C056 Modeling Transport in Aquatic Systems
R825433C057 Spatial and Temporal Trends in Water Quality
R825433C058 Time Series Analysis and Modeling Ecological Risk
R825433C059 WWW/Outreach
R825433C060 Economic Effects of Multiple Stresses
R825433C061 Effects of Nutrients on Algal Growth
R825433C062 Nutrient Loading
R825433C063 Subalpine Wetlands as Early Indicators of Ecosystem Stress
R825433C064 Chlorinated Hydrocarbons
R825433C065 Sierra Ozone Studies
R825433C066 Assessment of Multiple Stresses on Soil Microbial Communities
R825433C067 Terrestrial - Agriculture
R825433C069 Molecular Epidemiology Core
R825433C070 Serum Markers of Environmental Stress
R825433C071 Development of Sensitive Biomarkers Based on Chemically Induced Changes in Expressions of Oncogenes
R825433C072 Molecular Monitoring of Microbial Populations
R825433C073 Aquatic - Rivers and Estuaries
R825433C074 Border Rivers - Toxicity Studies