My research focuses on occurrence, effects, and public knowledge of pharmaceutical and personal care products (PPCPs) in the marine environment. For my dissertation, I completed three research studies in the field, lab and community to investigate these topics. First, I examined PPCP accumulation in organisms placed near and far from wastewater sources in locations with low human populations in Oregon and Washington. Second, I conducted a lab experiment to determine effects of mixtures of PPCPs in coastal wastewater effluent on organism health. Lastly, I used surveys and interviews with pharmacy customers and pharmacists to determine leftover drug disposal behaviors and recommendations.



Ehrhart, A.L. & E.F. Granek. Pharmaceuticals and alkylphenols in transplanted Pacific oysters (Crassostrea gigas): spatial variation and growth effects. Marine Pollution Bulletin. In prep. 

Ehrhart, A.L. & E.F. Granek. Effects of coastal wastewater treatment plant effluent on Pacific oyster health. Environmental Science and Pollution Research. In prep.

Ehrhart, A.L., Granek, E.F., Nielsen-Pincus, M., Horn, D.A. Leftover drug disposal: customer behavior, pharmacist recommendations, and obstacles to drug take-back box implementation. Waste Management. In review.