20080868 Ver 2_I-49 2017 Little Ponar Downstream Raw Data Table_20180629

Table 1-49. Numbers of benthic macroinvertebrates collected in each ponar grab sample at the Little
Creek downstream station in May of 2017.
Species/taxon
Little Creek Downstream Samples
1
2
3
4
5
Average
Annelida
Oligochaeta
Tubificoides heterochaetus
2
0
3
0
0
1.0
Polychaeta
Amphicteis floridus
37
25
48
30
14
30.8
Eteone heteropda
1
0
1
2
6
2.0
Marenzellaria viridis
36
53
91
82
66
65.6
Mediomastus ambiseta
1
0
0
0
0
0.2
Polydora cornuta
0
1
2
0
0
0.6
Streblospio benedicti
0
16
58
8
24
21.2
Arthropoda
Insecta
Diptera
Bezzia/Palpomyia complex
1
1
1
0
0
0.6
Chironomus decorus
2
6
17
9
6
8.0
Tanypus neopunctipennis
0
9
2
1
0
2.4
Tanytarsus sp.
0
0
3
0
0
0.6
Malacostraca
Amphipoda
Apocorophium lacustre
37
53
39
20
17
33.2
Apocorophium sp.
28
33
22
40
39
32.4
Gammarus tigrinus
14
22
12
13
8
13.8
Isopoda
Cyathura polity
1
0
0
1
1
0.6
Edotia montosa
1
1
0
0
0
0.4
Mysida
Americamysis almyra
0
1
1
1
0
0.6
Ostracoda
Cyprideis littoralis
3
5
3
8
5
4.8
Mollusca
Bivalvia
Rangia cuneata
8
13
20
22
17
16.0
Gastropoda
Littoridinops sp.
1
1
2
8
6
3.6
Nematoda
Nematoda sp.
3
4
9
7
4
5.4
Total taxa by sample
176
1 244
1 334
1 252
1 213
Total abundance = 1,219
Total taxa present = 20
Shannon -Wiener diversity = 2.24
1-55