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David R. Ownby

	Assistant Professor Environmental Chemistry Office: 514D Smith Phone: (410)704-2946 E-mail: downby@towson.edu Website: http://pages.towson.edu/downby
Education	B.S. Chemistry (1995) Davidson College M.S. Environmental Toxicology (1997) Clemson University Ph.D. Marine Science (2002) The College of William and Mary Postoctoral Fellow (2002-2004) Southern Illinois University - Carbondale
Teaching	Introduction to Environmental Chemistry (CHEM 104) General Chemistry II (CHEM 111) Environmental Chemistry (ENVS 602) Ecotoxicology (ENVS 640)
Research	A general theme present in my research is the goal of developing models and utilizing novel statistical approaches to accurately predict the effects and fate of metals, both singularly and in combination in both aquatic and terrestrial systems. My research addresses issues of how the chemistry of a system affects the bioavailability of metals and the consequential affect of the metal on the organism. More information is available on my webpage.
Selected Publications	Ownby, D.R., K.A. Galvan, M.J. Lydy “Lead and zinc bioavailability to Eisenia fetida after phosphorus amendment to repository soils” Environ. Pollut. 2005, 136, 315-321. Link to Full Article Ownby, D.R., J.B. Belden, G.R. Lotufo, M.J. Lydy “Accumulation of trinitrotoluene (TNT) in aquatic organisms: Part 1 — Bioconcentration and distribution in channel catfish (Ictalurus punctatus)” Chemosphere 2005, 58(9), 1153-59. Link to Full Article Ownby, D.R., T.A. Trimble, K.A. Cole, M.J. Lydy “Pesticide residues in water, sediment, and fish at the Sparta, IL, USA National Guard Armory” Bull. Environ. Contam. Toxicol. 2004, 73, 802-809. Link to Full Article Ownby, D.R. and M.C. Newman “Advances in quantitative ion character-activity relationships (QICARs): Using metal-ligand binding characteristics to predict metal toxicity” QSAR Comb. Sci. 2003, 22(2), 241-246. Link to Full Article Ownby, D.R., L. F. Arzayus, M. Mulvey, W. K. Vogelbein, M.A. Unger, M.C. Newman “Fish (Fundulus heteroclitus) populations with different exposure histories differ in tolerance of creosote-contaminated sediments” Environ. Toxicol. Chem. 2002, 21(9), 1897-1902. Link to Full Article Ownby, D.R., T. W. La Point, G. P. Cobb “Silver Size Fractionation in Aqueous Toxicity Test Solutions” Toxicol. Environ. Chem. 2001, 81, 29-41. Newman, M.C., D.R. Ownby, L.C.A. Mezin, D.C. Powell, T.R.L. Christensen, S.B. Lerberg, and B.A. Anderson “Applying species sensitivity distributions in ecological risk assessment: Assumptions of distribution type and sufficient numbers of species” Environ. Toxicol. Chem. 2000, 19(2), 508-515. Link to Full Article Karen, D.J., D.R. Ownby, B.L. Forsythe, T.P. Bills, T.W. La Point, G. P. Cobb, S.J. Klaine “Influence of Water Quality on Silver Toxicity to Rainbow Trout (O. mykiss), Fathead Minnows (P. promelas), and the Waterflea (D. magna)” Environ. Toxicol. Chem. 1999, 18(1), 63-70. Link to Full Article

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Department of Chemistry
Smith Hall 543
Towson University
8000 York Road
Towson, MD 21252