20080868 Ver 2_I-73 2015 Duck Ponar Downstream Raw Data Table_20160708

Table 1-73. Numbers of benthic macroi nverteb rates collected in each ponar grab sample at the Duck
Creek downstream station in May 2015.
Species/taxon
Duck Creek Downstream Samples
1
2
3
4
5
Average
Annelida
Oligochaeta
Tubificoides heterochaetus
0
0
0
0
3
0.6
Polychaeta
Amphicteis floridus
0
0
1
4
3
1.6
Marenzelleria viridis
1
0
0
0
1
0.4
Streblospio benedicti
0
4
3
1
6
2.8
Arthropoda
Insecta
Diptera
Chironomus decorus
89
100
100
100
100
97.8
Coelotanypus sp.
0
0
0
1
1
0.4
Procladius sp.
0
0
0
1
0
0.2
Tanypus neopunctipennis
5
4
8
3
9
5.8
Tanytarsus sp.
3
1
14
5
7
6.0
Malacostraca
Amphipoda
Apocorophium sp.
2
0
0
0
0
0.4
Gammarus tigrinus
2
0
0
1
2
1.0
Mysida
Americamysis almyra
0
0
1
0
1
0.4
Ostracoda
Candonidae
0
1
0
0
0
0.2
Cyprideis littoralis
2
0
0
1
2
1.0
Mollusca
Bivalvia
Macoma tenta
1
0
0
0
0
0.2
Nematoda
Nematoda sp.
0
0
0
0
1
0.2
Total taxa by sample
105
110
127
117
136
Total abundance = 595
Total taxa present = 16
Shannon -Wiener diversity = 0.83
1-81