20080868 Ver 2_I-37 2014 Jacobs Ponar Downstream Raw Data Table_20150717

Table 1 -37. Numbers of benthic macroinvertebrates collected in each ponar grab sample at the
Jacobs Creek downstream station in May 2014.
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Jacobs Creek Downstream Samples
Species /taxon
1
2
3
4
5
Average
Annelida
Oligochaeta
Tubificidae sp. w/o hair
4
0
0
2
1
1.4
Polychaeta
Heteromastus filiformis
1
0
0
0
0
0.2
Mediomastus ambiseta
11
6
5
10
4
7.2
Scoloplos robustus
0
0
0
1
1
0.4
Streblospio benedicti
2
0
1
1
1
1.0
Arthropoda
Insecta
Diptera
Chironomus decorus
22
17
31
35
24
25.8
Parachironomus sp.
0
0
0
0
1
0.2
Malacostraca
Amphipoda
Apocorophium louisianum
1
0
0
0
0
0.2
Gammarus mucronatus
35
16
0
16
4
14.2
Gammarus tigrinus
1
0
1
0
0
0.4
Decapoda
Pa /aemonetes pugio
0
0
0
1
0
0.2
Mysida
Americamysis almyra
0
0
0
0
1
0.2
Ostracoda
Cyprideis littoralis
7
2
0
3
4
3.2
Mollusca
Bivalvia
Macoma balthica
2
1
0
1
2
1.2
Macoma tenta
5
4
1
10
6
5.2
Mulinia lateralis
0
1
0
0
0
0.2
Gastropoda
Littoridinops tenuipes
0
0
0
2
0
0.4
Nematoda
Nematoda sp.
1
0
0
0
0
0.2
Total taxa by sample
92
47
39
82
49
Total abundance = 309
Total taxa present = 18
Shannon - Wiener diversity = 1.77
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