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Browse History: Lower Bay (2010)

Chesapeake Bay - Reporting Region Summary:



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Bay Health Index
Benthic Index of Biotic Integrity Icon
50%
C
Lower Bay: 2010

Moderate ecosystem health. The overall health of this region remained the same as last year. Benthic community declined the most of all indicators, followed by water clarity.
  • Water quality: Both dissolved oxygen and chlorophyll a indicators remained in good and very poor condition, respectively. Both indicators’ scores increased slightly in 2010, but water clarity scores decreased, scoring 19% (compared to 22% in 2009).
  • Biotic Indicators: Aquatic grasses and phytoplankton community scores remained relatively unchanged from 2009. The benthic community condition score was 71%, a sharp drop from the 2009 score of 85%. However, this indicator tends to be highly variable, and the 2010 score is the second highest since 2002.

Score Legend
Locator Map
  Index/Indicator Score     Index/Indicator Score
Benthic Index of Biotic Integrity Icon Chlorophyll a
13%
  Benthic Index of Biotic Integrity Icon Aquatic grasses
46%
Benthic Index of Biotic Integrity Icon Dissolved oxygen
88%
  Benthic Index of Biotic Integrity Icon Benthic Index of Biotic Integrity
71%
Benthic Index of Biotic Integrity Icon Water clarity
19%
  Benthic Index of Biotic Integrity Icon Phytoplankton Index of Biotic Integrity
62%
 
Benthic Index of Biotic Integrity Icon Water Quality Index
40%
  Biotic Index Icon Biotic Index
60%
 

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