20080868 Ver 2_I-49 2015 Little Ponar Downstream Raw Data Table_20160708

Table 1-49. Numbers of benthic macroinvertebrates collected in each ponar grab sample at the Little
Creek downstream station in May of 2015.
Species/taxon
Little Creek Downstream Samples
1
2
3
4
5
Average
Annelida
Oligochaeta
Tubificidae sp. w/o hair
44
26
56
6
18
30.0
Polychaeta
Amphicteis floridus
52
54
40
40
44
46.0
Eteone heteropda
12
4
0
4
10
6.0
Marenzellana vindis
4
4
2
4
0
2.8
Mediomastus ambiseta
4
6
8
0
2
4.0
Polydora cornuta
2
2
8
0
0
2.4
Streblospio benedicti
100
94
100
32
70
79.2
Arthropoda
Insecta
Diptera
Bezzia/Palmonyia complex
0
2
2
0
10
2.8
Chironomus decorus
44
72
100
24
62
60.4
Dicrotendipes nervosus
4
2
0
4
0
2.0
Goeldichironomus devineyae
0
0
0
2
4
1.2
Parachironomus sp.
0
2
0
0
0
0.4
Tanypus neopunctipennis
0
0
2
2
0
0.8
Tanytarsus sp.
6
2
6
2
6
4.4
Malacostraca
Amphipoda
Apocorophium lacustre
26
18
12
14
56
25.2
Apocorophium louisianum
0
0
4
0
8
2.4
Apocorophium sp.
40
60
56
66
98
64.0
Gammarus tigrinus
16
34
14
64
74
40.4
Isopoda
Cyathura polita
0
4
0
0
2
1.2
Maxillopoda
Harpacticoida sp.
0
0
4
0
4
1.6
Ostracoda
Candonidae sp.
0
4
0
0
2
1.2
Cyprideis littoralis
10
14
10
4
22
12.0
Mollusca
Bivalvia
Macoma balthica
2
2
0
8
2
2.8
Macoma tenta
0
0
2
2
2
1.2
Rangia cuneata
2
2
0
2
2
1.6
Gastropoda
Littoridinops sp.
4
6
10
4
14
7.6
Total taxa by sample
372
414
436
284
512
Total abundance = 2,018
Total taxa present = 25
Shannon -Wiener diversity = 2.40
1-57