20080868 Ver 2_I-60 2014 Muddy Ponar Upstream Biotic Index Table_20150717

Table 1 -60. Estuarine Biotic Index (EBI) calculations for benthic ponar samples at the Muddy Creek
upstream station in May 2014.
Species /taxona
Arthropoda
Insecta
Diptera
Chironomus decorus
Goeldichironomus devineyae
Parachironomus sp.
Malacostraca
Amphipoda
Gammarus mucronatus
Mollusca
Bivalvia
Macoma balthica
Number of Sensitivity Abundance Product of
individualsb value (SV)` value (n) (SV)(n)
9 1.0
3
3.0
1 2.0
1
2.0
2 1.1
1
1.1
2 2.3
1
2.3
1 1.5
1
1.5
Total
Estuarine Biotic Index = 1.41
Total taxa = 8
Total taxa with sensitivity values = 5
a Only those taxa for which a sensitivity value is available are displayed.
bTotal number of individuals caught in all five ponar replicates.
'Sensitivity values provided by NCDW R.
..
7 9.9