20080868 Ver 2_I-77 2015 DCUT19 Ponar Downstream Raw Data Table_20160708

Table 1-77. Numbers of benthic m acroi nverte b rates collected in each ponar grab sample at the
DCUT19 downstream station in May 2014.
Species/taxon
DCUT19 Downstream Samples
1
2
3
4
5
Average
Annelida
Oligochaeta
Tubificidae sp. w/o hair
32
6
6
3
0
9.4
Tubificoides heterochaetus
20
3
9
0
0
6.4
Polychaeta
Amphicteis floridus
100
39
84
100
72
79.0
Laeonereis culveri
16
18
21
15
4
14.8
Marenzellaria viridis
32
0
0
0
0
6.4
Polydora cornuta
0
0
3
0
0
0.6
Streblospio benedicti
12
0
0
0
0
2.4
Arthropoda
Insecta
Diptera
Beezia/Palpomyia complex
12
12
24
24
8
16.0
Chironomus decorus
0
3
72
66
24
33.0
Dicrotendipes nervosus
4
3
24
39
12
16.4
Goeldichironomus devineyae
0
0
0
3
4
1.4
Nanocladius sp.
0
0
3
0
0
0.6
Parachironomus sp.
24
3
9
3
8
9.4
Polypedilum sp.
8
0
0
0
0
1.6
Tanytarsus sp.
44
3
57
36
16
31.2
Malacostraca
Amphipoda
Apocorophium sp.
12
6
3
0
0
4.2
Gammarus tigrinus
100
51
93
48
4
59.2
Isopoda
Cassidinidea lunifrons
4
0
0
0
0
0.8
Cyathura polita
40
6
6
0
4
11.2
Edotia montosa
52
0
3
0
0
11.0
Mysida
Americamysis almyra
12
0
0
0
0
2.4
Tanaidacea
Hargeria rapax
28
0
18
0
16
12.4
Maxillopoda
Harpacticoida sp.
48
6
6
0
0
12.0
Ostracoda
Candonidae sp.
76
45
18
0
32
34.2
Cyprideis littoralis
4
0
6
0
4
2.8
Mollusca
Bivalvia
Rangia cuneata
3
0
0
0
0
0.6
Gastropoda
Littoridinops sp.
16
3
3
21
4
9.4
1-85

Nematoda
Nematoda sp. 1 36 3 1 21 1 3 0 1 12.6:
Total taxa by sample 1 735 210 1 489 1 361 1 212
Total abundance = 2,007
Total taxa present = 27
Shannon -Wiener diversitv = 2.74
1-85