20080868 Ver 2_I-73 2017 Duck Ponar Downstream Raw Data Table_20180629

Table 1-73. Numbers of benthic macroinvertebrates collected in each ponar grab sample at the Duck
Creek downstream station in May 2017.
Species/taxon
Duck Creek Downstream Samples
1
2
3
4
5
Average
Annelida
Oligochaeta
Tubificoides heterochaetus
0
2
16
34 2
10.8
Polychaeta
Amphicteis floridus
48
34
29
100 33
48.8
Marenzelleria viridis
1
3
0
0 1
1.0
Mediomastus ambiseta
1
0
1
3 0
1.0
Polydora cornuta
0
2
0
2 1
1.0
Streblospio benedicti
2
7
6
23 2
8.0
Arthropoda
Insecta
Diptera
Bezzia/Palpomyia complex
0
0
0
3 0
0.6
Chironomus decorus
0
1
1
3 0
1.0
Glyptotendipes sp.
0
1
0
0 0
0.2
Procladius sp.
6
10
7
24 8
11.0
Tanypus neopunctipennis
0
0
1
3 0
0.8
Tanytarsus sp.
0
0
0
1 0
0.2
Malacostraca
Amphipoda
Apocorophium lacustre
5
2
7
7 10
6.2
Apocorophium sp.
2
4
6
19 11
8.4
Gammarus tigrinus
3
1
6
14 3
5.4
Leptocheirus plumulosus
0
0
1
0 0
0.2
Isopoda
Cyathura polity
0
0
0
2 1
0.6
Mysida
Americamysis almyra
0
0
0
0 1
0.2
Ostracoda
Candonidae sp.
0
0
1
0 0
0.2
Cyprideis littoralis
6
10
7
9 6
7.6
Mollusca
Bivalvia
Macoma balthica
1
0
0
7 0
1.6
Macoma tenta
0
0
0
1 1
0.4
Mytilopsis leucophaeta
0
0
0
0 1
0.2
Rangia cuneata
4
2
2
2 2
2.4
Gastropoda
Littoridinops sp.
3
0
1
0 6
2.0
Nematoda
Nematoda sp.
0
0
1
0 1
0.4
Total taxa by sample
82
79
93
257 90
Total abundance = 601
Total taxa present = 25
Shannon -Wiener diversitv = 2.19
1-79