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Table 4. Percent frequency, abundance index (AI), cover, and standard errors of submersed and rooted floating–leaf vegetation in Pool 13, Upper Mississippi River System, 2000.
|
Common name
(Scientific name) |
Contiguous
backwater n = 198 |
Isolated
backwater n = 30 |
Impounded
n = 210 |
|||
|
Freq
|
AI
|
Freq
|
AI
|
Freq
|
AI
|
|
| bladderwort, common (Utricularia macrorhiza) |
0.5 ± 0.5
|
0.1 ± 0.1
|
6.7 ± 4.6
|
1.0 ± 0.7
|
-
|
-
|
| chara (Chara spp.) |
-
|
-
|
3.3 ± 3.3
|
0.4 ± 0.4
|
-
|
-
|
| coontail (Ceratophyllum demersum) |
47.0 ± 3.6
|
8.4 ± 0.9
|
46.7 ± 9.3
|
8.6 ± 2.0
|
12.4 ± 2.3
|
1.8 ± 0.4
|
| pondweed, curly (Potamogeton crispus) |
12.6 ± 2.4
|
1.4 ± 0.3
|
33.3 ± 8.8
|
4.4 ± 1.3
|
6.7 ± 1.7
|
0.6 ± 0.2
|
| pondweed, flatstem (P. zosteriformis) |
1.0 ± 0.7
|
0.1 ± 0.1
|
-
|
-
|
-
|
-
|
| pondweed, horned (Zannichellia palustris) |
-
|
-
|
3.3 ± 3.3
|
0.2 ± 0.2
|
-
|
-
|
| pondweed, leafy/small (Potamogeton foliosus/pusillus) |
6.6 ± 1.8
|
0.6 ± 0.2
|
16.7 ± 6.9
|
2.4 ± 1.2
|
1.9 ± 0.9
|
0.2 ± 0.1
|
| pondweed, longleaf (P. nodosus) |
4.5 ± 1.5
|
0.5 ± 0.2
|
3.3 ± 3.3
|
0.2 ± 0.2
|
4.8 ± 1.5
|
0.8 ± 0.3
|
| pondweed, sago (P. pectinatus) |
30.3 ± 3.3
|
3.7 ± 0.4
|
46.7 ± 9.3
|
8.2 ± 1.7
|
17.1 ± 2.6
|
2.4 ± 0.4
|
| stargrass, water (Heteranthera dubia) |
15.2 ± 2.6
|
1.8 ± 0.3
|
-
|
-
|
16.2 ± 2.5
|
2.2 ± 0.4
|
| watermilfoil, Eurasian (Myriophyllum spicatum) |
15.7 ± 2.6
|
1.8 ± 0.3
|
-
|
-
|
20.0 ± 2.8
|
2.5 ± 0.4
|
| waternymph, nodding (Najas flexilis) |
12.6 ± 2.4
|
1.7 ± 0.3
|
10.0 ± 5.6
|
1.3 ± 0.8
|
-
|
-
|
| waternymph, southern (N. guadalupensis) |
3.5 ± 1.3
|
0.3 ± 0.1
|
6.7 ± 4.6
|
0.5 ± 0.3
|
0.5 ± 0.5
|
<0.1 ± <0.1
|
| waterweed, Canadian (Elodea canadensis) |
10.6 ± 2.2
|
1.4 ± 0.3
|
10.0 ± 5.6
|
1.8 ± 1.1
|
1.4 ± 0.8
|
0.1 ± 0.1
|
| wildcelery (Vallisneria americana) |
4.5 ± 1.5
|
0.6 ± 0.2
|
-
|
-
|
31.4 ± 3.2
|
5.9 ± 0.6
|
| all submersed species |
58.1 ± 3.5
|
11.0 ± 0.9
|
53.3 ± 9.3
|
11.6 ± 2.4
|
40.5 ± 3.4
|
8.1 ± 0.7
|
|
Freq
|
Cover
|
Freq
|
Cover
|
Freq
|
Cover
|
|
| lotus, American (Nelumbo lutea) |
31.3 ± 3.3
|
14.8 ± 2.1
|
36.7 ± 8.9
|
3.7 ± 0.8
|
10.5 ± 2.1
|
4.0 ± 1.0
|
| waterlily, white (Nymphaea odorata) |
10.6 ± 2.2
|
3.5 ± 1.0
|
6.7 ± 4.6
|
0.7 ± 0.5
|
5.2 ± 1.5
|
1.5 ± 0.5
|
| all rooted floating–leaf species |
36.9 ± 3.4
|
18.8 ± 2.3
|
40.0 ± 9.1
|
4.0 ± 0.9
|
11.4 ± 2.2
|
5.7 ± 1.2
|
|
Common name
(Scientific name) |
Main channel
border n = 70 |
Secondary
channel n = 70 |
Pool 13
n = 578 |
|||
|
Freq
|
AI
|
Freq
|
AI
|
Freq
|
AI
|
|
| bladderwort, common (Utricularia macrorhiza) |
-
|
-
|
-
|
-
|
0.6 ± 0.3
|
0.1 ± 0.1
|
| chara (Chara spp.) |
-
|
-
|
-
|
-
|
0.2 ± 0.2
|
<0.1 ± <0.1
|
| coontail (Ceratophyllum demersum) |
-
|
-
|
1.4 ± 1.4
|
0.1 ± 0.1
|
25.0 ± 1.7
|
4.3 ± 0.4
|
| pondweed, curly (Potamogeton crispus) |
1.4 ± 1.4
|
0.1 ± 0.1
|
-
|
-
|
9.5 ± 1.3
|
1.1 ± 0.2
|
| pondweed, flatstem (P. zosteriformis) |
-
|
-
|
-
|
-
|
0.4 ± 0.3
|
<0.1 ± <0.1
|
| pondweed, horned (Zannichellia palustris) |
-
|
-
|
-
|
-
|
0.2 ± 0.2
|
<0.1 ± <0.1
|
| pondweed, leafy/small (Potamogeton foliosus/pusillus) |
-
|
-
|
-
|
-
|
4.2 ± 0.9
|
0.5 ± 0.1
|
| pondweed, longleaf (P. nodosus) |
-
|
-
|
1.4 ± 1.4
|
0.1 ± 0.1
|
4.0 ± 0.9
|
0.5 ± 0.1
|
| pondweed, sago (P. pectinatus) |
5.7 ± 2.8
|
0.8 ± 0.4
|
-
|
-
|
21.5 ± 1.7
|
2.9 ± 0.3
|
| stargrass, water (Heteranthera dubia) |
-
|
-
|
-
|
-
|
12.5 ± 1.4
|
1.6 ± 0.2
|
| watermilfoil, Eurasian (Myriophyllum spicatum) |
8.6 ± 3.4
|
1.0 ± 0.4
|
1.4 ± 1.4
|
0.1 ± 0.1
|
15.1 ± 1.5
|
1.8 ± 0.2
|
| waternymph, nodding (Najas flexilis) |
-
|
-
|
-
|
-
|
5.1 ± 0.9
|
0.7 ± 0.1
|
| waternymph, southern (N. guadalupensis) |
-
|
-
|
-
|
-
|
1.9 ± 0.6
|
0.2 ± <0.1
|
| waterweed, Canadian (Elodea canadensis) |
-
|
-
|
-
|
-
|
5.0 ± 0.9
|
0.7 ± 0.1
|
| wildcelery (Vallisneria americana) |
7.1 ± 3.1
|
1.4 ± 0.7
|
-
|
-
|
16.0 ± 1.5
|
2.9 ± 0.3
|
| all submersed species |
14.3 ± 4.2
|
2.3 ± 0.8
|
4.3 ± 2.4
|
0.3 ± 0.2
|
43.0 ± 2.1
|
8.3 ± 0.5
|
|
Freq
|
Cover
|
Freq
|
Cover
|
Freq
|
Cover
|
|
| lotus, American (Nelumbo lutea) |
-
|
-
|
2.9 ± 2.0
|
0.3 ± 0.2
|
18.1 ± 1.6
|
7.3 ± 0.9
|
| waterlily, white (Nymphaea odorata) |
-
|
-
|
-
|
-
|
6.5 ± 1.1
|
1.9 ± 0.4
|
| all rooted floating–leaf species |
-
|
-
|
2.9 ± 2.0
|
0.3 ± 0.2
|
20.7 ± 1.6
|
9.4 ± 1.0
|
U.S. Department of the Interior |
U.S. Geological Survey
URL: http://www.umesc.usgs.gov/reports_publications/ltrmp/veg/2000/tables/tables04pool13.html
Page Contact Information: Contacting the Upper Midwest Environmental Sciences Center
Page Last Modified:
October 2, 2007
