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Table 4.5: Dominant taxa, species richness
(no. taxa), total faunal density (no. per 0.02 m2) and
diversity (Shannon Weiner) at the 4 benthic monitoring stations in 2000.
Percent of total fauna collected for that site/date combination is shown
for common species.
Winter 2000 NCF6
Winter 2000 NAV
Winter 2000 M31
Winter 2000
M54
Species richness
20
Species richness
19 Species richness
17
Species richness
13
Total Faunal density
23.2
Total Faunal density
112.6
Total Faunal density
28
Total Faunal density
50.5
Faunal diversity
1.04
Faunal diversity
0.65
Faunal diversity
0.077 Faunal
diversity
0.065
Common taxa:
Common taxa:
Common taxa:
Common taxa:
Bivalvia sp.
6
Coelotanypus.sp.
5.2
Marenzellaria virdis
9.5
Malacoceros vanderhorsti 21.5
Gastropoda sp.
31
Tubificoides heterochaetus
7.8
Mediomastus
spp. 50.6
Marenzellaria virdis 41.9
Coelotanypus sp.
8.6
Malacoceros vanderhorsti 17.1
Streblospio benedicti 16.7
Mediomastus ambiseta 24.8
Polypedilum sp.
6
Marenzellaria virdis
57
Tubificidae sp.
10.3
Marenzelleria
virdis
10.3
Spring 2000 NCF6
Spring 2000 NAV
Spring 2000 M31
Spring 2000 M54
Species richness
19
Species richness
10 Species richness
14
Species richness
15
Total Faunal density
30.6
Total Faunal density
39.25
Total Faunal density
152.5 Total
Faunal density
41.75
Faunal diversity
0.91
Faunal diversity
0.46
Faunal diversity
0.36
Faunal diversity
0.74
Common taxa:
Common taxa:
Common taxa:
Common taxa:
Hydrobia sp.
9.8
Procladius sp.
15.9
Mediomastus spp.
78.2
Corophium spp.
18.6
Cladotanytarsus sp.
46.4
Oligochaete sp.
70.7
Streblospio benedicti 14.1
Oligochaete sp.
9
Oligochaete sp.
7.8
Mediomastus spp. 48
Parandalis sp.
8.4
Polydora ligni
6
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