20080868 Ver 2_I-81 2015 DCUT11 Ponar Downstream Raw Data Table_20160708

Table 1-81. Numbers of benthic macroinvertebrates collected in each ponar grab sample at the
DCUT11 downstream station in May 2015.
Species/taxon
DCUT11 Downstream Samples
1 2
3
4
5
Average
Annelida
Oligochaeta
Tubificidae sp. (w/o hair)
0 4
0
0
0
0.8
Polychaeta
Amphicteis floridus
80 96
16
100
66
71.6
Laeonereis culveri
12 0
0
0
0
2.4
Marenzelleria viridis
0 4
0
0
0
0.8
Streblospio benedicti
8 4
0
0
3
3.0
Arthropoda
Insecta
Diptera
Ablabesmyia sp.
4 4
0
0
0
1.6
Bezzia/Palpomyia complex
0 4
0
6
0
2.0
Chironomus decorus
0 12
0
2
3
3.4
Dicrotendipes nervosus
64 76
12
38
6
39.2
Tanypus neopunctipennis
0 0
0
2
0
0.4
Malacostraca
Amphipoda
Apocorophium lacustre
8 0
4
8
0
4.0
Apocorophium sp.
24 8
0
12
0
8.8
Gammarus tigrinus
48 100
36
100
48
66.4
Decapoda
Rhithropanopeus harrisii
4 0
0
2
3
1.8
Isopoda
Cassidinidea lunifrons
4 0
2
0
0
1.2
Cyathura polita
0 12
0
2
6
4.0
Mysida
Americamysis almyra
0 4
0
0
3
1.4
Maxillopoda
Harpacticoida sp.
0 4
0
2
0
1.2
Ostracoda
Candonidae sp.
4 0
2
0
0
1.2
Cyprideis littoralis
0 8
0
2
0
2.0
Mollusca
Bivalvia
Rangia cuneata
0 0
0
0
1
0.2
Gastropoda
Littoridinops sp.
0 0
0
4
0
0.8
Nematoda
Nematoda sp.
8 0
0
0
0
1.6

Total taxa by sample 1 268 1 340 I 72 280 I 139
Total abundance = 1,099
Total taxa present = 22
Shannon -Wiener diversity = 1.88