Aquatic Health Near Wastewater Discharge In Delaware Inland Bays Tidal Canal: Monitoring Chemical And Microbiological Contaminants | 2474
Journal of Earth Science & Climatic Change
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As Delaware?s coastal landscape continues to develop in a low-density and sprawling manner, the health of valuable natural
resources, many of which sustain local economies, is increasingly at risk. Managing the demands for protecting critical
habitat and managing water resources are a complex and continuously changing challenge in Delaware. Our primary objective
is to assess the aquatic health of the Inland Bays through bacterial and water quality testing at a point source in this study.
We have investigated relationship between environmental parameters with totalbacteria and Vibrio population in water and
eastern oysters (Crassostrea virginica). Oysters were placed in enclosed trays and submerged in the canal at four study sites.
Physical and chemical water quality parameters were measured at all four sites, three of which are proximate to a municipal
wastewater treatment plant discharge, and one control site away from the discharge. Vibrio was detected in canal water and in
oysters via the COPP assay andVibrio counts in the canal water were highest during August and September, while total bacteria
counts were high virtually throughout the study period. Vibrio counts in oysters were erratic with a significant spike occurred
in August after Hurricane Irene. Total bacteria and Vibrio overall were significantly more concentrated in oysters than in canal
water. Preliminary results show similarities in the physical water propertiesand clear differences in the chemical properties of the
effluent discharge and the receiving waters.Oyster growth and mortality rates are also examined to determine if the discharge has
any effect on the growth and survival of oysters.
Dr. Ozbay is a Research Professor in the Department of Agriculture and Natural Resources in Delaware State University. Her research interests are
in the area of habitat restoration and water quality issues, specifically water quality driven toxicity in harmful algae, shellfish-algae dynamics, nutrient
and water quality management, aquatic ecology and bacterial monitoring. She received her PhD. in Fisheries and Allied Aquacultures at Auburn
University, Auburn, Alabama in 2002. She conducted research leading to the development of aquaculture effluent water quality standards for the U.S.
Environmental Protection Agency as her PhD. project. Dr. Ozbay has advised 15 graduate and 50 undergraduate students and has served other 15
graduate students? committees. She has received several outstanding researcher awards at the national, regional and institutional levels. She serves
as an Editorial Board Member for the five different journals and former Executive Board Member for Atlantic Estuarine Research Society. She also
serves in the Research Advisory Committee for NOAA-LMRCSC, Technical Advisory Committee for the Northeast Aquaculture Center, currently as
co-chair, and the Center for the Inland Bays.
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