20080868 Ver 2_I-33 2017 Jacks Ponar Downstream Raw Data Table_20180629

Table 1-33. Numbers of benthic macroi nverteb rates collected in each ponar grab sample at the Jacks
Creek downstream station in May 2017.
Species/taxon
Jacks Creek Downstream Samples
1
2
3 1 4
5 Average
Annelida
Polychaeta
Eteone heteropoda
1
3
1
4
2
2.2
Marenzelleria viddis
40
12
41
29
13
27.0
Mediomastus ambiseta
1
0
0
0
0
0.2
Streblospio benedicti
1
1
3
1
0
1.2
Arthropoda
Insecta
Diptera
Bezzia/Palpomyia complex
1
0
0
0
0
0.2
Dicrotendipes nervosus
0
0
1
0
0
0.2
Tanypus neopunctipennis
0
0
1
0
0
0.2
Hemiptera
Corixidae sp.
1
0
1
0
0
0.4
Trichocorixa sexcincta
0
0
1
0
0
0.2
Malacostraca
Amphipoda
Apocorophium lacustre
0
1
0
0
0
0.2
Apocorophium sp.
3
1
1
1
0
1.2
Gammarus tigrinus
13
2
25
2
1
8.6
Isopoda
Cyathura polita
1
0
0
0
0
0.2
Edotia montosa
1
0
0
0
0
0.2
Mysida
Americamysis almyra
5
0
0
0
0
1.0
Ostracoda
Cyprideis littoralis
2
0
41
0
0
8.6
Mollusca
Bivalvia
Macoma balthica
0
2
0
0
0
0.4
Rangia cuneata
18
6
38
10
7
15.8
Gastropoda
Littoridinops sp.
4
1
24
0
1
6.0
Nematoda
Nematoda sp.
0
0
1
1
0
0.4
Total taxa by sample
92
29
179
48
24
Total abundance = 372
Total taxa present = 18
Shannon -Wiener diversity = 1.91
1-49