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Michelle I. Hornberger

Research Physical Scientist

B.A., (1985) University of California Santa Barbara, Environmental Studies (Major); Geology (Minor)
M.S., (1991) Moss Landing Marine Laboratory, Marine Science
Ph.D. University of California Davis, Ecology

Research Interests
My primary research interest focuses on understanding how environmental and biological factors influence the fate of metal bioavailability in aquatic insects. Different groups of insects are used as bioindicators of metal contamination in a mine impacted stream, including caddisflies, stoneflies, and craneflies. Currently, I am working towards quantifying the proportion of metal uptake in caddisflies through both the dissolved and dietary phase.

Conducting long-term field studies is also an important component to my research. Ongoing work in the Clark Fork Basin, Montana and San Francisco Bay, California, has been used to identify bioaccumulation patterns associated with localized inputs of pollutant loads and trends related to natural variability.

Selected Publications
Hornberger, M.I., Luoma, S.N., Cain, D.J., Parchaso, F., Brown, C.L., Bouse, R.M., Wellise, C., and Thompson, J., 2000. Linkage of bioaccumulation and biological effects to changes in pollutant loads in South San Francisco Bay. Environmental Science and Technology, 34:2401-2409.

Hornberger, M.I., Luoma, S.N., van Geen, A., Fuller, C., and Anima, R., 1999. Historical trends of metals in the sediments of San Francisco Bay, California. Marine Chemistry, 64:39-55.

Hornberger, M.I., Lambing, J.H., Luoma, S.N., and Axtmann, E.V., 1997. Spatial and temporal trends of trace metals in surface water, bed sediment, and biota of the Upper Clark Fork Basin, Montana, 1985-95. U. S. Geological Survey Open File Report 97-669. Menlo Park, California. 127 pp.

Giddings, E.M., Hornberger, M.I., and Hadley, H.K., 2001. Trace-metal concentrations in sediment and water and health of aquatic macroinvertebrate communities of streams near Park City, Summit County, Utah. U.S. Geological Survey Water-Resources Investigations Report 2001-4213. Salt Lake City, Utah. 21 pp.

Curriculum Vitae
You may view a full curriculum vitae in adobe acrobat format, adobe acrobat PDF, 113kb. To download the free adobe acrobat reader, click here.


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Michelle Hornberger
Michelle Hornberger
Clark Fork River near Alberton, MT

U.S. Department of Interior, U.S. Geological Survey, Ecology and Contaminants Project
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