20080868 Ver 2_I-81 2014 DCUT11 Ponar Downstream Raw Data Table_20150717

Table 1 -81. Numbers of benthic macroinvertebrates collected in each ponar grab sample at the
DCUT11 downstream station in May 2014.
DCUT11 Downstream Samples
Species /taxon
1
2
3
4
5
Average
Annelida
Polychaeta
Amphicteis floridus
100
78
69
100
100
89.4
Eteone heteropoda
0
0
0
3
4
1.4
Heteromastus filiformis
0
3
3
3
0
1.8
Marenzelleria viridis
0
3
0
0
0
0.6
Streblospio benedicti
8
9
0
0
4
4.2
Arthropoda
Insecta
Diptera
Bezzia/Palpomyia complex
8
9
24
21
28
18.0
Chironomus decorus
24
39
15
39
48
33.0
Cricotopus sp.
4
0
0
3
0
1.4
Dicrotendipes nervosus
4
15
24
63
8
22.8
Goeldichironomus devineyae
0
21
9
3
0
6.6
Parachironomus sp.
16
6
6
6
0
6.8
Tanytarsus sp.
0
15
6
18
20
11.8
Hemiptera
Corixidae sp.
0
6
0
0
0
1.2
Odonata
Enallagma sp.
0
0
0
0
4
0.8
Malacostraca
Amphipoda
Apocorophium sp.
0
0
6
0
0
1.2
Gammarus mucronatus
0
0
6
0
16
4.4
Gammarus tigrinus
92
45
63
100
100
80.0
Decapoda
Rhithropanopeus harrisii
0
0
3
0
0
0.6
Isopoda
Cyathura polita
0
0
0
3
0
0.6
Edotia montosa
0
3
0
0
0
0.6
Tanaidacea
Hargeria rapax
4
0
0
0
0
0.8
Maxillopoda
Harpacticoida sp.
4
0
0
0
0
0.8
Ostracoda
Candonidae sp.
0
0
0
9
0
1.8
Mollusca
Bivalvia
Macoma balthica
0
0
0
0
4
0.8

Macoma tenta
Mytilopsis leucophaeata
Gastropoda
Littoridinops tenuipes
Nematoda
Nematoda sp.
Total taxa by sample
Total abundance = 1,575
Total taxa present = 28
Shannon - Wiener diversity = 2.19
4
0
0
0
0
0.8
0
3
0
0
0
0.6
16
30
15
9
32
20.4
0
3
0
6
0
1.8
284
288
249
386
368