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Table 3. Percent frequency, abundance index (AI), cover, and standard errors of submersed and rooted floating-leaf vegetation in Pool 8, Upper Mississippi River System, 2001.
| Common
name (Scientific name) |
Contiguous backwater n =175 |
Isolated backwater n = 50 |
Impounded n = 225 |
|||
|
Freq
|
AI
|
Freq
|
AI
|
Freq
|
AI
|
|
| bladderwort, common (Utricularia macrorhiza) |
5.1 ± 1.7
|
0.5 ± 0.2
|
14.0 ± 5.0
|
1.4 ± 0.5
|
-
|
-
|
| chara (Chara spp.) |
-
|
-
|
8.0 ± 3.9
|
0.8 ± 0.4
|
-
|
-
|
| coontail (Ceratophyllum demersum) |
63.4 ± 3.7
|
9.2 ± 0.7
|
92.0 ± 3.9
|
21.0 ± 1.8
|
11.1 ± 2.1
|
1.2 ± 0.3
|
| pondweed, curly (Potamogeton crispus) |
20.6 ± 3.1
|
2.0 ± 0.3
|
14.0 ± 5.0
|
1.9 ± 0.8
|
4.9 ± 1.4
|
0.6 ± 0.2
|
| pondweed, flatstem (P. zosteriformis) |
21.7 ± 3.1
|
2.5 ± 0.4
|
16.0 ± 5.2
|
1.5 ± 0.5
|
0.4 ± 0.4
|
<0.1± <0.1
|
| pondweed, horned (Zannichellia palustris) |
-
|
-
|
-
|
-
|
-
|
-
|
| pondweed, leafy/small (Potamogeton foliosus/pusillus) |
32.0 ± 3.5
|
3.9 ± 0.5
|
46.0 ± 7.1
|
6.9 ± 1.2
|
3.6 ± 1.2
|
0.4 ± 0.1
|
| pondweed, longleaf (P. nodosus) |
3.4 ± 1.4
|
0.4 ± 0.2
|
-
|
-
|
1.8 ± 0.9
|
0.2 ± 0.1
|
| pondweed, Richardson's (P. richardsonii) |
-
|
-
|
-
|
-
|
-
|
-
|
| pondweed, sago (P. pectinatus) |
28.6 ± 3.4
|
3.5 ± 0.5
|
20.0 ± 5.7
|
2.6 ± 0.8
|
13.3 ± 2.3
|
1.7 ± 0.3
|
| stargrass, water (Heteranthera dubia) |
16.6 ± 2.8
|
1.6 ± 0.3
|
4.0 ± 2.8
|
0.6 ± 0.4
|
25.3 ± 2.9
|
3.2 ± 0.4
|
| watermilfoil, Eurasian (Myriophyllum spicatum) |
9.1 ± 2.2
|
0.8 ± 0.2
|
-
|
-
|
5.3 ± 1.5
|
0.6 ± 0.2
|
| waternymph, nodding (Najas flexilis) |
1.7 ± 1.0
|
0.2 ± 0.1
|
12.0 ± 4.6
|
1.4 ± 0.6
|
0.4 ± 0.4
|
0.1 ± 0.1
|
| waterweed, Canadian (Elodea canadensis) |
38.9 ± 3.7
|
4.4 ± 0.5
|
42.0 ± 7.1
|
7.5 ± 1.4
|
12.4 ± 2.2
|
1.8 ± 0.4
|
| wildcelery (Vallisneria americana) |
6.9 ± 1.9
|
0.7 ± 0.2
|
-
|
-
|
20.9 ± 2.7
|
3.1 ± 0.4
|
| all submersed species |
76.0 ± 3.2
|
12.6 ± 0.7
|
92.0 ± 3.9
|
21.8 ± 1.9
|
36.9 ± 3.2
|
5.8 ± 0.6
|
|
Freq
|
Cover
|
Freq
|
Cover
|
Freq
|
Cover
|
|
| lotus, American (Nelumbo lutea) |
9.1 ± 2.2
|
1.3 ± 0.4
|
2.0 ± 2.0
|
0.2 ± 0.2
|
4.0 ± 1.3
|
0.7 ± 0.3
|
| pond-lily, yellow (Nuphar variegata) |
2.9 ± 1.3
|
0.3 ± 0.1
|
6.0 ± 3.4
|
1.8 ± 1.4
|
-
|
-
|
| waterlily, white (Nymphaea odorata) |
24.0 ± 3.2
|
6.7 ± 1.2
|
70.0 ± 6.5
|
41.8 ± 5.4
|
2.7 ± 1.1
|
0.3 ± 0.1
|
| all rooted floating–leaf species |
39.7 ± 3.5
|
8.2 ± 1.3
|
72.0 ± 6.4
|
43.6 ± 5.3
|
6.2 ± 1.6
|
0.9 ± 0.3
|
| Common
name (Scientific name) |
Main channel border n =100 |
Secondary channel n =120 |
Pool 8 n = 670 |
|||
|
Freq
|
AI
|
Freq
|
AI
|
Freq
|
AI
|
|
| bladderwort, common (Utricularia macrorhiza) |
-
|
-
|
-
|
-
|
2.0 ± 0.5
|
0.2 ± 0.1
|
| chara (Chara spp.) |
-
|
-
|
-
|
-
|
0.3 ± 0.1
|
<0.1± <0.1
|
| coontail (Ceratophyllum demersum) |
10.0 ± 3.0
|
0.9 ± 0.3
|
13.3 ± 3.1
|
1.7 ± 0.4
|
29.2
± 1.5
|
4.3 ± 0.2
|
| pondweed, curly (Potamogeton crispus) |
2.0 ± 1.4
|
0.2 ± 0.1
|
4.2 ± 1.8
|
0.5 ± 0.2
|
9.4 ± 1.2
|
1.0 ± 0.1
|
| pondweed, flatstem (P. zosteriformis) |
1.0 ± 1.0
|
0.1 ± 0.1
|
4.2 ± 1.8
|
0.4 ± 0.2
|
7.6 ± 1.0
|
0.8 ± 0.1
|
| pondweed, horned (Zannichellia palustris) |
-
|
-
|
0.8 ± 0.8
|
0.1 ± 0.1
|
0.1 ± 0.1
|
<0.1± <0.1
|
| pondweed, leafy/small (Potamogeton foliosus/pusillus) |
-
|
-
|
8.3 ± 2.5
|
1.1 ± 0.4
|
13.7 ± 1.3
|
1.7 ± 0.2
|
| pondweed, longleaf (P. nodosus) |
-
|
-
|
2.5 ± 1.4
|
0.3 ± 0.2
|
2.2 ± 0.6
|
0.2 ± 0.1
|
| pondweed, Richardson's (P. richardsonii) |
1.0 ± 1.0
|
0.1 ± 0.1
|
-
|
-
|
<0.1 ± <0.1
|
<0.1± <0.1
|
| pondweed, sago (P. pectinatus) |
12.0 ± 3.3
|
2.0 ± 0.7
|
10.0 ± 2.8
|
1.2 ± 0.4
|
17.3 ± 1.6
|
2.2 ± 0.2
|
| stargrass, water (Heteranthera dubia) |
7.0 ± 2.6
|
0.8 ± 0.3
|
7.5 ± 2.4
|
0.6 ± 0.2
|
18.8 ± 1.7
|
2.2 ± 0.2
|
| watermilfoil, Eurasian (Myriophyllum spicatum) |
-
|
-
|
2.5 ± 1.4
|
0.2 ± 0.1
|
5.6 ± 1.0
|
0.6 ± 0.1
|
| waternymph, nodding (Najas flexilis) |
-
|
-
|
0.8 ± 0.8
|
0.2 ± 0.2
|
1.3 ± 0.4
|
0.2 ± 0.1
|
| waterweed, Canadian (Elodea canadensis) |
2.0 ± 1.4
|
0.1 ± 0.1
|
8.3 ± 2.5
|
0.9 ± 0.3
|
20.0 ± 1.6
|
2.6 ± 0.2
|
| wildcelery (Vallisneria americana) |
7.0 ± 2.6
|
1.0 ± 0.4
|
7.5 ± 2.4
|
0.9 ± 0.3
|
13.7 ± 1.5
|
1.9 ± 0.2
|
| all submersed species |
24.0 ± 4.3
|
3.5 ± 0.8
|
22.5 ± 3.8
|
3.1 ± 0.6
|
47.5 ± 1.9
|
7.8 ± 0.4
|
|
Freq
|
Cover
|
Freq
|
Cover
|
Freq
|
Cover
|
|
| lotus, American (Nelumbo lutea) |
3.0 ± 1.7
|
1.9 ± 1.2
|
4.2 ± 1.8
|
0.4 ± 0.2
|
5.4 ± 0.9
|
0.8 ± 0.2
|
| pond-lily, yellow (Nuphar variegata) |
-
|
-
|
-
|
-
|
1.0 ± 0.4
|
0.1 ± 0.1
|
| waterlily, white (Nymphaea odorata) |
-
|
-
|
3.3 ± 1.6
|
0.3 ± 0.2
|
11.2 ± 1.1
|
3.7± 0.4
|
| all rooted floating–leaf species |
3.0 ± 1.7
|
1.9 ± 1.2
|
5.8 ± 2.1
|
0.6 ± 0.2
|
15.2 ± 1.3
|
4.6 ± 0.5
|
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/reports_publications/ltrmp/veg/2001/tables/tables03pool08.html
Page Contact Information: Contacting the Upper Midwest Environmental Sciences Center
Page Last Modified:
October 2, 2007
