20080868 Ver 2_I-65 2017 Huddles Ponar Downstream Raw Data Table_20180629

Table 1-65. Numbers of benthic macroinvertebrates collected in each ponar grab sample at the
Huddles Cut downstream station in May 2017.
Species/taxon
Huddles Cut Downstream Samples
1
2
3
4
5
Avera e
Annelida
Oligochaeta
Naididae sp. w/o hair
0
2
0
0
0
0.4
Tubificoides heterochaetus
0
0
0
0
2
0.4
Polychaeta
Amphicteis floridus
20
46
8
30
16
24.0
Eteone heteropoda
0
2
0
6
0
1.6
Heteromastus filiformis
4
0
0
3
2
1.8
Marenzelleria viddis
0
2
0
0
0
0.4
Neanthes succinea
4
4
0
6
2
3.2
Polydora cornuta
2
0
0
0
0
0.4
Streblospio benedicti
2
0
2
0
0
0.8
Arthropoda
Insecta
Diptera
Bezzia/Palpomyia complex
0
0
0
0
2
0.4
Chironomus decorus
100
100
62
100
100
92.4
Goeldichironomus devineyae
0
0
0
0
2
0.4
Tanytarsus sp.
2
0
0
0
0
0.4
Malacostraca
Amphipoda
Apocorophium lacustre
0
0
4
0
0
0.8
Apocorophium sp.
0
4
2
0
0
1.2
Gammarus tigrinus
1
2
0
0
0
0.6
Decapoda
Paleomonetes pugio
0
0
2
3
0
1.0
Isopoda
Cyathura polita
4
0
0
0
0
0.8
Edotia montosa
4
0
0
0
0
0.8
Ostracoda
Candonidae sp.
0
2
0
0
2
0.8
Cyprideis littoralis
12
46
12
39
22
26.2
Mollusca
Bivalvia
Macoma balthica
4
0
6
0
6
3.2
Macoma tenta
6
6
4
6
4
5.2
Rangia cuneata
4
26
2
15
8
11.0
Gastropoda
Littoridinops sp.
6
14
2
3
4
5.8
Nematoda
Nematoda sp.
6
2
0
0
0
1.6
Total taxa by sample
181
258
106
211
172
Total abundance = 928
Total taxa present = 24
Shannon -Wiener diversitv = 1.82
1-71