A.  Percent frequencies calculated using all areas of Target Lake.

Year

1992

1993

1994

1995

1996

1997

1998

1999

2000

Number of sites sampled

259

298

278

298

279

286

292

286

295

All submersed vegetation

41.3

30.5

68.3

72.8

68.8

73.4

67.1

79.4

66.4

coontail

2.7

22.1

54.0

61.1

45.9

40.2

54.5

74.8

55.9

chara

Chara spp.

-

-

-

-

-

-

-

0.7

-

Canadian waterweed

Elodea canadensis

-

0.3

20.9

5.7

1.8

4.9

10.3

28.3

3.0

water stargrass

Heteranthera dubia

-

-

-

0.3

0.4

-

3.8

9.8

4.1

Eurasian watermilfoil

Myriophyllum spicatum

3.5

8.1

11.5

0.3

0.7

3.5

3.1

15.0

22.0

nodding waternymph

Najas flexilis

1.2

-

4.3

4.0

0.7

0.3

3.8

9.8

3.4

curly pondweed

Potamogeton crispus

-

-

6.8

2.0

1.4

5.2

5.5

9.4

0.3

leafy/small pondweed

P. foliosus/P. pusillus

-

-

12.9

14.1

14.3

19.9

21.6

32.2

19.0

longleaf pondweed

P. nodosus

0.4

-

2.2

1.0

2.5

2.1

1.4

1.4

3.7

sago pondweed

P. pectinatus

39.0

7.7

43.2

44.0

49.5

48.3

33.2

33.6

5.8

Richardson’s pondweed

P. richardsonii

-

-

-

-

-

-

-

-

0.3

flatstem pondweed

P. zosteriformis

-

1.0

0.4

-

0.7

-

-

-

0.3

common bladderwort

Utricularia macrorhiza

-

4.4

0.7

1.7

0.4

-

3.8

3.5

-

wild celery

Vallisneria americana

-

-

-

-

-

-

-

-

0.7

All rooted floating leaf vegetation

45.6

42.6

36.7

40.3

51.3

52.1

49.0

54.5

53.2

American lotus

Nelumbo lutea

19.3

14.8

9.7

13.8

28.3

34.3

39.4

39.9

33.2

white water-lily

Nymphaea odorata

33.2

33.9

32.7

32.2

37.6

32.9

28.4

29.7

31.0

7

8

12

12

13

10

12

13

14

B.  Percent frequencies calculated using only areas of Target Lake sampled during the 2001 drawdown.

Year

1992

1993

1994

1995

1996

1997

1998

1999

2000

2001

Number of sites sampled

198

225

216

227

212

214

219

213

220

200

All submersed vegetation

38.4

32.9

62.5

68.7

62.3

67.8

60.3

72.8

61.4

68.5

coontail

2.0

24.0

48.1

56.4

39.6

30.4

47.9

68.1

50.0

59.5

chara

Chara spp.

-

-

-

-

-

-

-

0.9

-

0.1

Canadian waterweed

Elodea canadensis

-

0.4

19.9

4.0

-

1.9

11.9

23.0

2.7

25.0

water stargrass

Heteranthera dubia

-

-

-

-

0.5

-

5.5

14.1

5.0

16.5

Eurasian watermilfoil

Myriophyllum spicatum

4.0

10.7

16.2

0.4

0.9

4.2

5.0

14.6

23.6

27.5

nodding waternymph

Najas flexilis

0.5

-

4.6

2.6

-

0.5

4.1

10.8

3.6

12.5

curly pondweed

Potamogeton crispus

-

-

7.4

2.6

1.9

5.6

7.8

11.3

-

2.5

leafy/small pondweed

P. foliosus/P. pusillus

-

-

14.8

13.2

7.5

10.7

15.5

26.8

18.6

17.5

longleaf pondweed

P. nodosus

0.5

-

2.3

0.4

1.9

1.4

1.8

1.9

3.6

2.5

sago pondweed

P. pectinatus

36.9

7.6

42.6

44.1

48.1

50.9

42.9

39.0

7.3

38.0

Richardson’s pondweed

P. richardsonii

-

-

-

-

-

-

-

-

0.5

-

flatstem pondweed

P. zosteriformis

-

1.3

0.5

-

-

-

-

-

0.5

0.5

common bladderwort

Utricularia macrorhiza

-

5.8

0.5

0.9

-

-

4.6

3.8

-

0.5

wild celery

Vallisneria americana

-

-

-

-

-

-

-

-

0.9

-

All rooted floating leaf vegetation

30.8

29.3

23.1

28.6

38.7

39.7

33.3

42.3

41.4

37.0

American lotus

Nelumbo lutea

18.2

13.8

9.7

14.1

25.0

27.1

27.4

34.3

29.5

27.0

white water-lily

Nymphaea odorata

18.2

20.0

18.9

20.3

22.2

19.2

17.4

16.9

19.1

19.0

Total number of species recorded

7

8

12

11

9

10

12

13

13

14