20080868 Ver 2_I-67 2017 Porter Ponar Upstream Raw Data Table_20180629

Table 1-67. Numbers of benthic macroinvertebrates collected in each ponar grab sample at the Porter
Creek upstream station in May 2017.
Species/taxon
Porter Creek Upstream Samples
1
2
3
4
5
Average
Annelida
Oligochaeta
Naididae sp. w/o hair
6
0
6
0
0
2.4
Polychaeta
Amphicteis floridus
100
100
100
100
100
100.0
Arthropoda
Insecta
Diptera
Bezzia/Palpomyia complex
8
8
0
0
0
3.2
Chironomus decorus
4
0
0
3
3
2.0
Dicrotendipes nervosus
2
0
0
0
0
0.4
Glyptotendipes sp.
8
0
3
0
9
4.0
Procladius sp.
0
0
0
6
3
1.8
Tanypus neopunctipennis
6
0
3
0
0
1.8
Tanytarsus sp.
0
0
6
0
0
1.2
Odonata
Perithemis tenera
0
8
0
0
0
1.6
Malacostraca
Amphipoda
Gammarus tigrinus
100
100
27
12
78
63.4
Isopoda
Cassidinidea lunifrons
2
0
0
0
0
0.4
Mysida
Americamysis almyra
0
4
3
0
0
1.4
Ostracoda
Candonidae sp.
0
4
6
0
0
2.0
Cyprideis littoralis
76
100
9
9
42
47.2
Mollusca
Bivalvia
Mytilopsis leucophaeata
12
0
0
0
0
2.4
Gastropoda
Littoridinops sp.
38
60
18
3
30
29.8
Nematoda
Nematoda sp.
4
0
3
0
3
2.0
Total taxa by sample
366
1 384
1 184
1 133
1 268
Total abundance = 1,335
Total taxa present = 18
Shannon -Wiener diversitv = 1.74
1-73