20080868 Ver 2_I-40 2014 PA2 Ponar Upstream Biotic Index Table_20150717

Table 1 -40. Estuarine Biotic Index (EBI) calculations for benthic ponar samples at the PA2 upstream
station in May 2014.
Total 181 317.1
Estuarine Biotic Index = 1.75
Total taxa = 13
Total taxa with sensitivity values = 13
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 NCDWR.
W.
Number of
Sensitivity
Abundance
Product of
Species /taxona
individualsb
value (SV)`
value (n)
(SV)(n)
Annelida
Oligochaeta
Tubificidae sp. w/o hair
15
1.0
10
10.0
Arthropoda
I nsecta
Diptera
Apedilum sp.
1
4.0
1
4.0
Bezzia/Palmonyia complex
1
2.3
1
2.3
Chironomus decorus
71
1.0
30
30.0
Dicrotendipes nervosus
1
1.0
1
1.0
Goe/dichironomus devineyae
23
2.0
10
20.0
Parachironomus sp.
13
1.1
10
11.0
Hemiptera
Corixidae sp.
2
1.3
1
1.3
Malacostraca
Amphipoda
Apocorophium louisianum
7
2.2
3
6.6
Apocorophium sp.
19
2.2
10
22.0
Gammarus mucronatus
4
2.3
3
6.9
Gammarus tigrinus
1
2.0
1
2.0
Mollusca
Gastropoda
Littoridinops tenuipes
141
2.0
100
200.0
Total 181 317.1
Estuarine Biotic Index = 1.75
Total taxa = 13
Total taxa with sensitivity values = 13
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 NCDWR.
W.