20080868 Ver 2_I-67 2014 Porter Ponar Upstream Raw Data Table_20150717

Table 1 -67. Numbers of benthic m acroi nverte b rates collected in each ponar grab sample at the Porter
Creek upstream station in May 2014.
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Porter Creek Upstream Samples
Species /taxon
1
2
3
4
5
Average
Annelida
Polychaeta
Amphicteis floridus
12
100
100
100
21
66.6
Marenzelleria viridis
0
1
0
0
0
0.2
Mediomastus ambiseta
0
0
2
0
0
0.4
Polydora cornuta
0
0
4
0
0
0.8
Streblospio benedicti
100
33
90
33
0
51.2
Arthropoda
Insecta
Diptera
Bezzia/Palpomyia complex
0
3
4
0
3
2.0
Chironomus decorus
10
7
12
12
3
8.8
Cryptotendipes sp.
0
1
0
0
0
0.2
Dicrotendipes nervosus
0
4
2
0
0
1.2
Parachironomus sp.
0
0
0
6
0
1.2
Tanypus neopunctipennis
6
0
6
0
0
2.4
Tanytarsus sp.
32
37
100
30
6
41.0
Malacostraca
Amphipoda
Apocorophium lacustre
0
0
2
0
0
0.4
Apocorophium louisianum
0
0
4
0
0
0.8
Apocorophium sp.
0
8
8
0
0
3.2
Gammarus tigrinus
6
16
52
21
27
24.4
Isopoda
Cyathura polita
0
1
0
9
0
2.0
Mysida
Americamysis bigelowi
2
0
0
0
0
0.4
Maxillopoda
Harpacticoida sp.
2
0
0
0
0
0.4
Ostracoda
Cyprideia littoralis
2
1
2
0
12
3.4
Mollusca
Bivalvia
Mytilopsis leucophaeata
0
0
10
0
3
2.6
Gastropoda
Littoridinops tenuipes
18
2
26
6
30
16.4
Total taxa by sample
190
214
424
217
105
Total abundance = 1,150
Total taxa present = 21
Shannon - Wiener diversity = 2.01
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