Long-Term Trends for Bottom Total Phosphorus in the Chesapeake Bay: 1999-2013

Long-Term Trends for Bottom Total Phosphorus in the Chesapeake Bay: 1999-2013

Author: Howard Weinberg

Date created: Apr 30, 2015

Long-term trends were computed by state partners using the Seasonal Kendall non-parametric technique for annual data collected from 1999-2013. Highly significant trends are indicated with triangles and possible trends are show with colored circles. Bottom total phosphorus concentrations are decreasing/improving significantly at 27 stations, possibly decreasing at 13 stations, increasing/degrading significantly at 12 stations, and possibly increasing at 10 stations.

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Phosphorus trends long-term trends bottom