20080868 Ver 2_I-58 2014 Tooley Ponar Downstream Biotic Index Table_20150717

Table 1 -58. Estuarine Biotic Index (EBI) calculations for benthic ponar samples at the Tooley Creek
downstream station in May 2014.
Total 283 435.5
Estuarine Biotic Index = 1.54
Total taxa = 16
Total taxa with sensitivity values = 14
8 Only those taxa for which a sensitivity value is available are displayed.
b Total number of individuals caught in all five ponar replicates.
Sensitivity values provided by NCDWR.
1 -64
Number of
Sensitivity
Abundance
Product of
Species /taxona
individualsb
value (SV)c
value (n)
(SV)(n)
Annelida
Polychaeta
Heteromastus filiformis
3
1.1
3
3.3
Laeonereis culved
1
1.0
1
1.0
Marenzelleria viridis
1
2.6
1
2.6
Mediomastus ambiseta
62
2.0
30
60.0
Neanthes succinea
1
1.7
1
1.7
Scoloplos robustus
1
1.1
1
1.1
Streblospio benedicti
24
1.1
10
11.0
Arthropoda
Insecta
Diptera
Chironomus decorus
391
1.0
100
100.0
Tanypus neopunctipennis
3
1.0
3
3.0
Malacostraca
Amphipoda
Gammarus mucronatus
1
2.3
1
2.3
Mysida
Americamysis almyra
2
2.2
1
2.2
Mollusca
Bivalvia
Macoma balthica
48
1.5
30
45.0
Macoma tenta
268
2.0
100
200.0
Mulinia lateralis
1
2.3
1
2.3
Total 283 435.5
Estuarine Biotic Index = 1.54
Total taxa = 16
Total taxa with sensitivity values = 14
8 Only those taxa for which a sensitivity value is available are displayed.
b Total number of individuals caught in all five ponar replicates.
Sensitivity values provided by NCDWR.
1 -64