Chesapeake Bay Benthic Monitoring Program

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Maryland Mid-Bay Mainstem

The lower portion of the Maryland Mid-Bay mainstem sampling stratum includes segment CB5MH.  The mainstem segment probabilities of observing degraded benthos are given in Table 1, below. 

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Benthic community condition for Maryland
Mid-Bay mainstem sites, segment CB5MH.
Red = Severely Degraded; Black = Degraded;
Violet = Marginal; Green = Meets Goals
All sites sampled to date (1994-2003) shown.



Table 1.  Total number of sites, degraded sites, and probabilities (90% confidence limits) of observing degraded benthos, non-degraded benthos, or benthos of indeterminate condition for the Maryland Mid Bay mainstem, 1999-2003.

* Probabilities adjusted according to Agresti and Caffo (2000).  Confidence limits adjusted for segments with ≥ 5 sites.  Exact confidence limits used for segments with < 5 sites.
Note: This latest assessment for the Tributary Teams uses only 5 years of data (1999-2003); methods are described in Llansσ et al. 2003.  Segments are Chesapeake Bay Program subunits having similar salinity and hydrographic characteristics.

 

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URL http://esm.versar.com/vcb/benthos/basins/main_mh5.htm

Revised: February 9, 2005.