Spatial trends and impairment assessment of mercury in sport fish in the Sacramento-San Joaquin Delta watershed

Primary tabs

Melwani, A. R., Bezalel, S. N., Hunt, J. A., Grenier, J. L., Ichikawa, G., Heim, W., … Davis, J. A. (2009). Spatial trends and impairment assessment of mercury in sport fish in the Sacramento-San Joaquin Delta watershed. Environmental Pollution, 157(11), 3137-3149. doi:10.1016/j.envpol.2009.05.013
Metadata
TitleSpatial trends and impairment assessment of mercury in sport fish in the Sacramento-San Joaquin Delta watershed
AuthorsA. Melwani, S. Bezalel, J. Hunt, J. Grenier, G. Ichikawa, W. Heim, A. Bonnema, C. Foe, D. Slotton, J. Davis
AbstractA three-year study was conducted to examine mercury in sport fish from the Sacramento-San Joaquin Delta. More than 4000 fish from 31 species were collected and analyzed for total mercury in individual muscle filets. Largemouth bass and striped bass were the most contaminated, averaging 0.40 μg/g, while redear sunfish, bluegill and rainbow trout exhibited the lowest (<0.15 μg/g) concentrations. Spatial variation in mercury was evaluated with an analysis of covariance model, which accounted for variability due to fish size and regional hydrology. Significant regional differences in mercury were apparent in size-standardized largemouth bass, with concentrations on the Cosumnes and Mokelumne rivers significantly higher than the central and western Delta. Significant prey-predator mercury correlations were also apparent, which may explain a significant proportion of the spatial variation in the watershed. © 2009 Elsevier Ltd. All rights reserved.
JournalEnvironmental Pollution
Date2009
Volume157
Issue11
Start page3137
End page3149
ISSN0269-7491
SubjectsAnalysis of covariances, Human health, Largemouth bass, Mercury, Prey-predator, Rainbow trout, Sacramento-San Joaquin Delta, Spatial trends, Spatial variations, Sportfish, Total mercuries, Fish, Landforms, Meats, Regression analysis, Water, Watersheds, Mercury (metal), bioaccumulation, concentration (composition), covariance analysis, heavy metal, mercury (element), pollution effect, river pollution, spatial analysis, spatial variation, trend analysis, animal tissue, article, controlled study, ecotoxicity, hydrology, mercurialism, nonhuman, predator prey interaction, river, striped bass, United States, water pollution, watershed, Animals, California, Environmental Monitoring, Fishes, Muscles, Rivers, Water Pollutants, Chemical, Cosumnes River, Mokelumne River, North America, Lepomis macrochirus, Lepomis microlophus, Micropterus, Morone, Oncorhynchus mykiss
NoteCited By (since 1996):2, Ecology, Fish and Fisheries, CODEN: ENPOE

Bookmark

Bookmarks: