James Orlando
James Orlando is a hydrologist with the U.S. Geological Survey and has been with the California Water Science Center since 1999.
James received his BS and MS degrees from California State University Sacramento. His focus at the USGS has been on examining spatial and temporal trends in concentrations of pesticides, mercury, and other contaminants found in surface water, sediment and biota of freshwater and estuarine ecosystems. His additional research interests include using GIS to display, analyze and model environmental and anthropogenic variables in an effort to better understand their impacts on sensitive ecosystems. He is currently a project chief in charge of USGS, Pesticide Fate Research Group studies taking place within California.
Science and Products
Filter Total Items: 47
Seasonal changes in concentrations of dissolved pesticides and organic carbon in the Sacramento-San Joaquin delta, California, 1994-1996
The Sacramento-San Joaquin Delta (Delta) of California is an ecologically rich and hydrologically complex region that receives runoff from nearly one-quarter of the state. Water-quality studies of surface water in the region have found dissolved pesticides in winter storm runoff at concentrations toxic to some aquatic invertebrates. However, scientists have little information on pesticide concentr
Authors
James L. Orlando, Kathryn Kuivila
Sediment supply and demand for salt pond restoration
No abstract available.
Authors
David H. Schoellhamer, James L. Orlando, Scott A. Wright, Larry A. Freeman
Analysis of pesticides in surface water and sediment from Yolo Bypass, California, 2004-2005
Inputs to the Yolo Bypass are potential sources of pesticides that could impact critical life stages of native fish. To assess the direct inputs during inundation, pesticide concentrations were analyzed in water, in suspended and bed-sediment samples collected from six source watersheds to the Yolo Bypass, and from three sites within the Bypass in 2004 and 2005. Water samples were collected in Feb
Authors
Kelly L. Smalling, James L. Orlando, Kathryn Kuivila
South San Francisco Bay tidal marsh vegetation and elevation surveys-Corkscrew Marsh, Bird Island, and Palo Alto Baylands, California, 1983
Changes in the topography and ecology of the San Francisco Bay Estuary ('Estuary') during the past 200 years have resulted in the loss of nearly 80 percent of the historical salt marsh in the region. Currently, numerous projects are being undertaken by federal, state, and local governments in an attempt to restore wetland habitat and ecosystem function at a number of locations within the Estuary.
Authors
James L. Orlando, Judy Z. Drexler, Kent G. Dedrick
Concentrations of organic contaminants detected during managed flow conditions, San Joaquin River and Old River, California, 2001
Concentrations of organic contaminants were determined in water samples collected at six surface-water sites located along the San Joaquin and Old Rivers during April through June 2001. Water samples were collected, coincident with salmon smolt caging studies conducted by researchers from the Bodega Marine Laboratory at the University of California at Davis to characterize exposure of the salmon s
Authors
James L. Orlando, Kathryn Kuivila
Occurrence, distribution, and transport of pesticides, trace elements, and selected inorganic constituents into the Salton Sea Basin, California, 2001-2002
A study of pesticide distribution and transport within the Salton Sea Basin, California, was conducted from September 2001 to October 2002. Sampling for the study was done along transects for the three major rivers that flow into the Salton Sea Basin: the New and Alamo Rivers at the southern end of the basin and the Whitewater River at the northern end. Three stations were established on each rive
Authors
Lawrence A. LeBlanc, Roy A. Schroeder, James L. Orlando, Kathyrn M. Kuivila
Changes in Rice Pesticide Use and Surface Water Concentrations in the Sacramento River Watershed, California
Pesticides applied to rice fields in California are transported into the Sacramento River watershed by the release of rice field water. Despite monitoring and mitigation programs, concentrations of two rice pesticides, molinate and thiobencarb, continue to exceed the surface-water concentration performance goals established by the Central Valley Regional Water Quality Control Board. There have bee
Authors
James L. Orlando, Kathryn Kuivila
Genotoxicity in native fish associated with agricultural runoff events
The primary objective of the present study was to test whether agricultural chemical runoff was associated with in-stream genotoxicity in native fish. Using Sacramento sucker (Catostomus occidentalis), we combined field-caging experiments in an agriculturally dominated watershed with controlled laboratory exposures to field-collected water samples, and we coupled genotoxicity biomarker measurement
Authors
Andrew Whitehead, Kathryn Kuivila, James L. Orlando, S. Kotelevtsev, Susan L. Anderson
Dissolved pesticide and organic carbon concentrations detected in surface waters, northern Central Valley, California, 2001-2002
Field and laboratory studies were conducted to determine the effects of pesticide mixtures on Chinook salmon under various environmental conditions in surface waters of the northern Central Valley of California. This project was a collaborative effort between the U.S. Geological Survey (USGS) and the University of California. The project focused on understanding the environmental factors that infl
Authors
James L. Orlando, Lisa A. Jacobson, Kathryn Kuivila
Pesticide concentrations in water and in suspended and bottom sediments in the New and Alamo rivers, Salton Sea Watershed, California, April 2003
This report contains pesticide concentration data for water, and suspended and bed sediment samples collected in April 2003 from twelve sites along the New and Alamo Rivers in the Salton Sea watershed, in southeastern California. The study was done in collaboration with the California State Regional Water Quality Control Board, Colorado River Region, to assess inputs of current-use pesticides asso
Authors
Lawrence A. LeBlanc, James L. Orlando, Kathryn Kuivila
By
Dissolved pesticide concentrations detected in storm-water runoff at selected sites in the San Joaquin River basin, California, 2000-2001
As part of a collaborative study involving the United States Geological Survey Toxics Substances Hydrology Project (Toxics Project) and the University of California, Davis, Bodega Marine Laboratory (BML), water samples were collected at three sites within the San Joaquin River Basin of California and analyzed for dissolved pesticides. Samples were collected during, and immediately after, the first
Authors
James L. Orlando, Kathryn Kuivila, Andrew Whitehead
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- Publications
Filter Total Items: 47
Seasonal changes in concentrations of dissolved pesticides and organic carbon in the Sacramento-San Joaquin delta, California, 1994-1996
The Sacramento-San Joaquin Delta (Delta) of California is an ecologically rich and hydrologically complex region that receives runoff from nearly one-quarter of the state. Water-quality studies of surface water in the region have found dissolved pesticides in winter storm runoff at concentrations toxic to some aquatic invertebrates. However, scientists have little information on pesticide concentrAuthorsJames L. Orlando, Kathryn KuivilaSediment supply and demand for salt pond restoration
No abstract available.AuthorsDavid H. Schoellhamer, James L. Orlando, Scott A. Wright, Larry A. FreemanAnalysis of pesticides in surface water and sediment from Yolo Bypass, California, 2004-2005
Inputs to the Yolo Bypass are potential sources of pesticides that could impact critical life stages of native fish. To assess the direct inputs during inundation, pesticide concentrations were analyzed in water, in suspended and bed-sediment samples collected from six source watersheds to the Yolo Bypass, and from three sites within the Bypass in 2004 and 2005. Water samples were collected in FebAuthorsKelly L. Smalling, James L. Orlando, Kathryn KuivilaSouth San Francisco Bay tidal marsh vegetation and elevation surveys-Corkscrew Marsh, Bird Island, and Palo Alto Baylands, California, 1983
Changes in the topography and ecology of the San Francisco Bay Estuary ('Estuary') during the past 200 years have resulted in the loss of nearly 80 percent of the historical salt marsh in the region. Currently, numerous projects are being undertaken by federal, state, and local governments in an attempt to restore wetland habitat and ecosystem function at a number of locations within the Estuary.AuthorsJames L. Orlando, Judy Z. Drexler, Kent G. DedrickConcentrations of organic contaminants detected during managed flow conditions, San Joaquin River and Old River, California, 2001
Concentrations of organic contaminants were determined in water samples collected at six surface-water sites located along the San Joaquin and Old Rivers during April through June 2001. Water samples were collected, coincident with salmon smolt caging studies conducted by researchers from the Bodega Marine Laboratory at the University of California at Davis to characterize exposure of the salmon sAuthorsJames L. Orlando, Kathryn KuivilaOccurrence, distribution, and transport of pesticides, trace elements, and selected inorganic constituents into the Salton Sea Basin, California, 2001-2002
A study of pesticide distribution and transport within the Salton Sea Basin, California, was conducted from September 2001 to October 2002. Sampling for the study was done along transects for the three major rivers that flow into the Salton Sea Basin: the New and Alamo Rivers at the southern end of the basin and the Whitewater River at the northern end. Three stations were established on each riveAuthorsLawrence A. LeBlanc, Roy A. Schroeder, James L. Orlando, Kathyrn M. KuivilaChanges in Rice Pesticide Use and Surface Water Concentrations in the Sacramento River Watershed, California
Pesticides applied to rice fields in California are transported into the Sacramento River watershed by the release of rice field water. Despite monitoring and mitigation programs, concentrations of two rice pesticides, molinate and thiobencarb, continue to exceed the surface-water concentration performance goals established by the Central Valley Regional Water Quality Control Board. There have beeAuthorsJames L. Orlando, Kathryn KuivilaGenotoxicity in native fish associated with agricultural runoff events
The primary objective of the present study was to test whether agricultural chemical runoff was associated with in-stream genotoxicity in native fish. Using Sacramento sucker (Catostomus occidentalis), we combined field-caging experiments in an agriculturally dominated watershed with controlled laboratory exposures to field-collected water samples, and we coupled genotoxicity biomarker measurementAuthorsAndrew Whitehead, Kathryn Kuivila, James L. Orlando, S. Kotelevtsev, Susan L. AndersonDissolved pesticide and organic carbon concentrations detected in surface waters, northern Central Valley, California, 2001-2002
Field and laboratory studies were conducted to determine the effects of pesticide mixtures on Chinook salmon under various environmental conditions in surface waters of the northern Central Valley of California. This project was a collaborative effort between the U.S. Geological Survey (USGS) and the University of California. The project focused on understanding the environmental factors that inflAuthorsJames L. Orlando, Lisa A. Jacobson, Kathryn KuivilaPesticide concentrations in water and in suspended and bottom sediments in the New and Alamo rivers, Salton Sea Watershed, California, April 2003
This report contains pesticide concentration data for water, and suspended and bed sediment samples collected in April 2003 from twelve sites along the New and Alamo Rivers in the Salton Sea watershed, in southeastern California. The study was done in collaboration with the California State Regional Water Quality Control Board, Colorado River Region, to assess inputs of current-use pesticides assoAuthorsLawrence A. LeBlanc, James L. Orlando, Kathryn KuivilaByDissolved pesticide concentrations detected in storm-water runoff at selected sites in the San Joaquin River basin, California, 2000-2001
As part of a collaborative study involving the United States Geological Survey Toxics Substances Hydrology Project (Toxics Project) and the University of California, Davis, Bodega Marine Laboratory (BML), water samples were collected at three sites within the San Joaquin River Basin of California and analyzed for dissolved pesticides. Samples were collected during, and immediately after, the firstAuthorsJames L. Orlando, Kathryn Kuivila, Andrew Whitehead