20080868 Ver 2_I-77 2014 DCUT19 Ponar Downstream Raw Data Table_20150717

Table 1 -77. Numbers of benthic m acroi nverte b rates collected in each ponar grab sample at the
DCUT19 downstream station in May 2014.
Im
DCUT19 Downstream Samples
Species /taxon
1
2
3
4
5
Average
Annelida
Oligochaeta
Tubificidae sp. w/o hair
44
84
100
100
100
85.6
Polychaeta
Amphicteis floridus
8
4
0
0
0
2.4
Heteromastus filiformis
0
0
8
0
4
2.4
Marenzellaria viridis
16
4
4
0
24
9.6
Mediomastus ambiseta
4
8
0
0
0
2.4
Neanthes succinea
0
0
16
3
8
5.4
Polydora cornuta
0
4
0
0
0
0.8
Streblospio benedicti
0
0
4
0
4
1.6
Arthropoda
Insecta
Diptera
Beezia/Palpomyia complex
0
0
12
3
8
4.6
Dicrotendipes nervosus
0
0
4
0
4
1.6
Goeldichironomus devineyae
0
0
12
0
8
4.0
Parachironomus sp.
8
4
4
0
4
4.0
Polypedilum sp.
0
0
0
3
0
0.6
Malacostraca
Amphipoda
Apocorophium lacustre
0
0
4
0
0
0.8
Apocorophium louisianum
0
4
0
0
0
0.8
Apocorophium sp.
8
0
16
0
0
4.8
Gammarus mucronatus
0
4
0
0
4
1.6
Gammarus tigrinus
100
100
100
100
100
100.0
Decapoda
Rhithropanopeus harrisii
0
0
0
3
0
0.6
Isopoda
Cyathura polita
4
0
0
0
20
4.8
Edotia montosa
0
0
0
0
4
0.8
Tanaidacea
Hargeria rapax
4
8
36
24
56
25.6
Mollusca
Bivalvia
Macoma tenta
4
0
8
3
4
3.8
Gastropoda
Littoridinops tenuipes
16
8
28
3
40
19.0
Nematoda
Nematoda sp.
4
0
4
0
0
1.6
Total taxa by sample
220
232
360
242
392
Total abundance = 1,446
Im

Total taxa present = 24
Shannon - Wiener diversity = 2.01
ME