20080868 Ver 2_I-41 2017 PA2 Ponar Downstream Raw Data Table_20180629

Table 1-41. Numbers of benthic macroinvertebrates collected in each ponar grab sample at the PA2
downstream station in May 2017.
Species/taxon
PA2 Creek Downstream Sam les
1
2
3
4
5
Average
Annelida
Oligochaeta
Enchytraeidae sp.
0
0
0
0
1
0.2
Naididae sp. w/o hair
5
1
1
0
2
1.8
Tubificoides heterochaetus
3
6
2
0
2
2.6
Polychaeta
Amphicteis floridus
66
100
60
43
56
65.0
Eteone heteropoda
2
5
3
3
6
3.8
Marenzelleria viridis
73
100
100
97
100
94.0
Mediomastus ambiseta
6
8
4
0
6
4.8
Laeonereis culveri
12
10
8
1
8
7.8
Polydora cornuta
0
0
0
0
1
0.2
Streblospio benedecti
2
3
0
1
1
1.4
Arthropoda
Insecta
Coleoptera
Peltodytes sp.
1
0
0
0
0
0.2
Diptera
Dicrotendipes nervosus
0
2
1
0
0
0.6
Tanypus neopunctipennis
0
1
0
0
1
0.4
Tanytarsus sp.
0
2
1
0
0
0.6
Hemiptera
Corixidae sp.
3
1
2
5
2
2.6
Trichocorixa sexcincta
4
1
0
0
1
1.2
Odonata
Enallagma sp.
1
0
0
0
0
0.2
Malacostraca
Amphipoda
Apocorophium lacustre
1
0
0
0
0
0.2
Apocorophium louisianum
7
4
3
3
3
4.0
Apocorophium sp.
14
6
8
3
5
7.2
Gammarus tigrinus
2
10
3
7
1
4.6
Decapoda
Palaemonetes pugio
0
0
0
0
1
0.2
Isopoda
Cyathura polita
4
0
1
1
0
1.2
Edotia montosa
0
1
0
0
1
0.4
Tanaidacea
Hargeria rapax
0
1
0
0
1
0.4
Ostracoda
Cyprideis littoralis
0
0
1
0
1
0.4
Mollusca
Bivalvia
Macoma tenta
0
1
1
0
0
0.4
Rangia cuneata
3
4
3
0
1
2.2
Gastropoda
Littoridinops sp.
45
37
44
11
36
34.6
Nematoda
Nematoda sp.
0
1
0
0
0
0.2
Total taxa by sample
254
305
246
175
237
Total abundance = 1,217
Total taxa present = 27
Shannon -Wiener diversity = 1.88
1-47