Maryland Department of Natural Resources Chesapeake Bay Water Quality Monitoring Program 1997
- Published:
- May 1, 1997
- Originator:
- MD DNR
This is a progress report primarily summarizing 4.5 years of data from July 1992 - december 1996. Although we present selected data covering the entire project period of August 1990 to December 1995, a previous report (Fisher etal. 1992b) summarized the details of the data from August 1990 to June 1992. In July 1992 wwe changed our protocols for nutrient addition bioassays, and we added two new indicators of P and N deficiency; alkaline phosphatase activity and the ammonium enhancement ratio. In July 1994 we also added intracellular ratios of amino acids as an indicator of N deficiency. this report gives cumulative statistics on bioassays from August 1990 to December 1996, and in the body of the report we emphasize the last 4.5 years of data on indicators of N and P deficiency and their potential use iin future monitoring efforts.