Upper Midwest Environmental Sciences Center

Table 2. Percent frequency, abundance index (AI), cover, and standard errors of submersed and rooted floating–leaf vegetation in Pool 4, Upper Mississippi River System, 1999.
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Vegetation - Stratified Random Sampling 2000

Table 2. Percent frequency, abundance index (AI), cover, and standard errors of submersed and rooted floating-leaf vegetation in Pool 4, Upper Mississippi River System, 2000.

Common name
(Scientific name)
Contiguous
backwater, upper
n = 100
Contiguous
backwater, lower
n = 179
Isolated
backwater
n = 32
Freq
AI
Freq
AI
Freq
AI
bladderwort, common (Utricularia macrorhiza)
-
-
0.6 ± 0.6
<0.1 ± <0.1
-
-
chara
(Chara spp.)
-
-
1.7 ± 1.0
0.2 ± 0.1
6.3 ± 4.3
0.9 ± 0.6
coontail (Ceratophyllum demersum)
4.0 ± 2.0
0.5 ± 0.3
30.2 ± 3.4
4.5 ± 0.7
65.6 ± 8.5
18.2 ± 4.6
pondweed, alpine (Potamogeton alpinus)
-
-
0.6 ± 0.6
0.1 ± 0.1
-
-
pondweed, curly (Potamogeton crispus)
1.0 ± 1.0
0.1 ± 0.1
7.8 ± 2.0
1.0 ± 0.3
28.1 ± 8.1
3.2 ± 1.0
pondweed, flatstem (P. zosteriformis)
-
-
7.3 ± 1.9
0.7 ± 0.2
3.1 ± 3.1
0.2 ± 0.2
pondweed, horned (Zannichellia palustris)
-
-
1.7 ± 1.0
0.2 ± 0.1
6.3 ± 4.3
0.7 ± 0.5
pondweed, leafy/small (Potamogeton foliosus/pusillus)
-
-
7.3 ± 1.9
0.7 ± 0.2
28.1 ± 8.1
3.2 ± 1.1
pondweed, longleaf
(P. nodosus)
2.0 ± 1.4
0.2 ± 0.2
1.7 ± 1.0
0.2 ± 0.1
9.4 ± 5.2
1.2 ± 0.7
pondweed, sago
(P. pectinatus)
15.0 ± 3.6
1.5 ± 0.4
8.9 ± 2.1
0.9 ± 0.2
43.8 ± 8.9
5.0 ± 1.1
stargrass, water (Heteranthera dubia)
-
-
32.4 ± 3.5
4.0 ± 0.5
6.3 ± 4.3
0.6 ± 0.5
watermilfoil, Eurasian (Myriophyllum spicatum)
-
-
23.5 ± 3.2
2.6 ± 0.4
15.6 ± 6.5
4.9 ± 2.4
waternymph, nodding (Najas flexilis)
-
-
4.5 ± 1.5
0.7 ± 0.2
-
-
waterweed, Canadian (Elodea canadensis)
-
-
23.5 ± 3.2
3.1 ± 0.5
31.3 ± 8.3
6.7 ± 2.5
wildcelery
(Vallisneria americana)
-
-
31.3 ± 3.5
4.4 ± 0.5
3.1 ± 3.1
0.2 ± 0.2

all submersed species
18.0 ± 3.9
2.0 ± 0.5
64.2 ± 3.6
10.7 ± 0.8
81.3 ± 7.0
26.7 ± 4.9
 
Freq
Cover
Freq
Cover
Freq
Cover
lotus, American
(Nelumbo lutea)
-
-
3.4 ± 1.3
0.6 ± 0.3
-
-
pond-lily, yellow
(Nuphar variegata)
-
-
1.1 ± 0.8
0.1 ± 0.1
-
-
waterlily, white (Nymphaea odorata)
5.0 ± 2.2
3.7 ± 1.8
16.2 ± 2.8
1.8 ± 0.3
46.9 ± 9.0
14.1 ± 4.1

all rooted floating-leaf species
5.0 ± 2.2
3.7 ± 1.8
19.6 ± 3.0
2.4 ± 0.4
46.9 ± 9.0
14.1 ± 4.1

Table 2. Continued.

Common name
(Scientific name)
Lake Pepin,
upper
n = 75
Lake Pepin,
lower
n = 75
Main channel
border, upper
n = 30
Freq
AI
Freq
AI
Freq
AI
bladderwort, common (Utricularia macrorhiza)
-
-
-
-
-
-
chara
(Chara spp.)
-
-
-
-
-
-
coontail
(Ceratophyllum demersum)
-
-
2.7 ± 1.9
0.3 ± 0.2
-
-
pondweed, alpine (Potamogeton alpinus)
-
-
-
-
-
-
pondweed, curly (Potamogeton crispus)
-
-
-
-
-
-
pondweed, flatstem
(P. zosteriformis)
-
-
-
-
-
-
pondweed, horned (Zannichellia palustris)
-
-
-
-
-
-
pondweed, leafy/small (Potamogeton foliosus/pusillus)
-
-
10.7 ± 3.6
0.9 ± 0.3
-
-
pondweed, longleaf
(P. nodosus)
-
-
1.3 ± 1.3
0.2 ± 0.2
-
-
pondweed, sago
(P. pectinatus)
14.7 ± 4.1
1.3 ± 0.4
20.0 ± 4.6
2.6 ± 0.6
3.3 ± 3.3
0.2 ± 0.2
stargrass, water
(Heteranthera dubia)
-
-
5.3 ± 2.6
0.5 ± 0.3
-
-
watermilfoil, Eurasian (Myriophyllum spicatum)
-
-
2.7 ± 1.9
0.2 ± 0.2
-
-
waternymph, nodding
(Najas flexilis)
-
-
24.0 ± 5.0
3.5 ± 0.8
-
-
waterweed, Canadian (Elodea canadensis)
-
-
24.0 ± 5.0
3.1 ± 0.7
-
-
wildcelery
(Vallisneria americana)
-
-
4.0 ± 2.3
0.5 ± 0.3
-
-

all submersed species
14.7 ± 4.1
1.3 ± 0.4
46.7 ± 5.8
6.4 ± 0.9
3.3 ± 3.3
0.2 ± 0.2
 
Freq
Cover
Freq
Cover
Freq
Cover
lotus, American
(Nelumbo lutea)
-
-
-
-
-
-
pond-lily, yellow
(Nuphar variegata)
-
-
-
-
-
-
waterlily, white
(Nymphaea odorata)
-
-
-
-
-
-

all rooted floating-leaf species
-
-
-
-
-
-

Table 2. Continued.

Common name
(Scientific name)
Main channel
border, lower
n = 40
Secondary
channel, upper
n = 40
Secondary
channel, lower
n = 60
Freq
AI
Freq
AI
Freq
AI
bladderwort, common (Utricularia macrorhiza)
-
-
-
-
-
-
chara
(Chara spp.)
-
-
-
-
-
-
coontail
(Ceratophyllum demersum)
2.5 ± 2.5
0.3 ± 0.3
-
-
16.7 ± 4.9
2.5 ± 0.8
pondweed, alpine
(Potamogeton alpinus)
-
-
-
-
1.7 ± 1.7
0.1 ± 0.1
pondweed, curly
(Potamogeton crispus)
7.5 ± 4.2
0.8 ± 0.5
-
-
18.3 ± 5.0
2.7 ± 0.8
pondweed, flatstem
(P. zosteriformis)
-
-
-
-
6.7 ± 3.2
0.5 ± 0.3
pondweed, horned
(Zannichellia palustris)
-
-
-
-
-
-
pondweed, leafy/small (Potamogeton foliosus/pusillus)
-
-
-
-
5.0 ± 2.8
0.6 ± 0.3
pondweed, longleaf
(P. nodosus)
2.5 ± 2.5
0.3 ± 0.3
-
-
11.7 ± 4.2
1.5 ± 0.6
pondweed, sago
(P. pectinatus)
5.0 ± 3.5
0.3 ± 0.2
-
-
15.0 ± 4.6
1.2 ± 0.4
stargrass, water
(Heteranthera dubia)
15.0 ± 5.7
1.1 ± 0.4
-
-
30.0 ± 6.0
3.8 ± 0.8
watermilfoil, Eurasian (Myriophyllum spicatum)
-
-
-
-
15.0 ± 4.6
1.6 ± 0.5
waternymph, nodding
(Najas flexilis)
-
-
-
-
-
-
waterweed, Canadian (Elodea canadensis)
5.0 ± 3.5
0.7 ± 0.5
-
-
21.7 ± 5.4
3.1 ± 0.9
wildcelery
(Vallisneria americana)
12.5 ± 5.3
1.5 ± 0.7
-
-
31.7 ± 6.1
4.0 ± 0.8

all submersed species
22.5 ± 6.7
2.4 ± 0.8
-
-
45.0 ± 6.5
7.2 ± 1.2
 
Freq
Cover
Freq
Cover
Freq
Cover
lotus, American
(Nelumbo lutea)
-
-
-
-
-
-
pond-lily, yellow
(Nuphar variegata)
-
-
-
-
-
-
waterlily, white
(Nymphaea odorata)
-
-
-
-
5.0 ± 2.8
0.5 ± 0.3

all rooted floating-leaf species
-
-
-
-
5.0 ± 2.8
0.5 ± 0.3

Table 2. Continued.

Common name
(Scientific name)
Pool 4, upper
n = 245
Pool 4, lower
n = 354
Pool 4
n = 631
Freq
AI
Freq
AI
Freq
AI
bladderwort, common (Utricularia macrorhiza)
-
-
0.3 ± 0.3
<0.1 ± <0.1
0.2 ± 0.2
<0.1 ± <0.1
chara
(Chara spp.)
-
-
1.0 ± 0.6
0.1 ± 0.1
0.8 ± 0.4
0.1 ± <0.1
coontail (Ceratophyllum demersum)
1.1 ± 0.5
0.1 ± 0.1
21.4 ± 2.2
3.2 ± 0.4
14.8 ± 1.3
2.6 ± 0.3
pondweed, alpine (Potamogeton alpinus)
-
-
0.5 ± 0.4
0.1 ± 0.1
0.3 ± 0.2
<0.1 ± <0.1
pondweed, curly
(P. crispus)
0.3 ± 0.3
<0.1 ± <0.1
7.7 ± 1.4
1.0 ± 0.2
5.4 ± 0.9
0.7 ± 0.1
pondweed, flatstem (P. zosteriformis)
-
-
5.3 ± 1.3
0.5 ± 0.1
3.0 ± 0.7
0.3 ± 0.1
pondweed, horned (Zannichellia palustris)
-
-
1.0 ± 0.6
0.1 ± 0.1
0.8 ± 0.4
0.1 ± <0.1
pondweed, leafy/small (Potamogeton foliosus/pusillus)
-
-
7.0 ± 1.4
0.7 ± 0.2
5.0 ± 0.8
0.5 ± 0.1
pondweed, longleaf (P. nodosus)
0.5 ± 0.4
0.1 ± <0.1
2.9 ± 0.8
0.3 ± 0.1
2.2 ± 0.5
0.3 ± 0.1
pondweed, sago (P. pectinatus)
13.0. ± 2.7
1.2 ± 0.3
11.3 ± 1.7
1.2 ± 0.2
13.4 ± 1.5
1.4 ± 0.2
stargrass, water (Heteranthera dubia)
-
-
25.9 ± 2.4
3.1 ± 0.3
14.2 ± 1.3
1.7 ± 0.2
watermilfoil, Eurasian (Myriophyllum spicatum)
-
-
16.8 ± 2.1
1.8 ± 0.2
9.7 ± 1.2
1.2 ± 0.2
waternymph, nodding (Najas flexilis)
-
-
7.0 ± 1.0
1.0 ± 0.2
3.8 ± 0.7
0.5 ± 0.1
waterweed, Canadian (Elodea canadensis)
-
-
21.8 ± 2.3
2.9 ± 0.3
13.1 ± 1.3
1.8 ± 0.2
wildcelery (Vallisneria americana)
-
-
24.9 ± 2.4
3.4 ± 0.4
13.5 ± 1.3
1.9 ± 0.2

all submersed species
13.8 ± 2.7
1.3 ± 0.3
55.3 ± 2.6
8.8 ± 0.5
39.1 ± 1.8
6.5 ± 0.4
 
Freq
Cover
Freq
Cover
Freq
Cover
lotus, American
(Nelumbo lutea)
-
-
2.1 ± 0.8
0.3 ± 0.2
1.1 ± 0.5
0.2 ± 0.1
pond-lily, yellow (Nuphar variegata)
-
-
0.7 ± 0.5
0.1 ± <0.1
0.4 ± 0.3
<0.1 ± <0.1
waterlily, white (Nymphaea odorata)
1.3 ± 0.6
1.0 ± 0.5
10.7 ± 1.8
1.2 ± 0.2
8.3 ± 1.0
1.7 ± 0.3

all rooted floating-leaf species
1.3 ± 0.6
1.0 ± 0.5
12.8 ± 1.9
1.6± 0.3
9.4 ± 1.1
1.9± 0.3

Page Last Modified: April 17, 2018