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Physical Sciences and Mathematics Commons

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Research and Technical Reports

2003

Environmental Health and Protection

Articles 1 - 2 of 2

Full-Text Articles in Physical Sciences and Mathematics

Categorization Of Shellfish Tmdl Sites Final Report, Julie Herman, Carl Hershner, Howard Kator Jun 2003

Categorization Of Shellfish Tmdl Sites Final Report, Julie Herman, Carl Hershner, Howard Kator

Reports

There were two important goals for this project, including the assembly and compilation of digital data for the Coastal Plain and tidal waters of Virginia, and the categorization of the Division of Shellfish Sanitation (DSS) shellfish growing areas to determine if some are similar enough for water quality models to be effectively transferred from the modeled growing areas to other areas. This report summarizes the data and statistical analyses and discusses the results. Note: The digital data has a very fine resolution. The maps displayed in this report cannot convey this information on 8.5x11" paper. All digital data layers ...


Status Of The Major Oyster Diseases In Virginia 2002 A Summary Of The Annual Monitoring Program, Lisa M. Ragone Calvo, Eugene M. Burreson Mar 2003

Status Of The Major Oyster Diseases In Virginia 2002 A Summary Of The Annual Monitoring Program, Lisa M. Ragone Calvo, Eugene M. Burreson

Reports

Samples collected monthly from the upper James River sites from January through May showed a decline in P. marinus prevalence during the 4 winter and spring following a typical annual pattern; however, annual minimums were atypically high, particularly at Point of Shoals and Wreck Shoal (12-44%). Unusually high salinity conditions and warm winter temperatures promoted high overwintering survival of the pathogen and an early onset of the disease in the summer months. Perkinsus marinus prevalence increased to 100% at all four of the upper river stations and record high infection intensities were observed at Deepwater Shoal and Horsehead Rock. It ...