Ecological Archives M074-006-A1

Diego P. Vázquez and Daniel Simberloff. 2004. Indirect effects of an introduced ungulate on pollination and plant reproduction. Ecological Monographs 74:281–308.

Appendix C. Sample sizes per site for pollinator visit frequency, pollen deposition, and reproduction for the four species that were significantly less dense in grazed sites.

Species

Variable

Year

Site

 

 

 

LL

CL

S

AG

M (nc)

M (c)

Q (nc)

Q (c)

A. aurea

Fruit set (no. fruits per flower)

2000–2001

112

120

119

213

55

28

135

216

 

Fruit set (no. fruits per flower)

1999–2000

114

35

117

93

101

26

73

39

 

Pollen deposition (mean no. of pollen grains per stigma)

2000–2001

70

79

73

143

39

15

74

108

 

Pollen deposition (mean no. of pollen grains per stigma)

1999–2000

27

22

38

33

37

14

27

22

 

Pollinator visitation (no. flowers visited in 10 min.)

2000–2001

62

99

69

105

51

42

68

60

 

Pollinator visitation (no. flowers visited in 10 min.)

1999–2000

150

83

154

127

141

50

103

83

 

Seed set (no. seeds per fruit or no. seeds per flower)

2000–2001

111

116

115

198

52

28

133

203

 

Seed set (no. seeds per fruit or no. seeds per flower)

1999–2000

21

16

27

28

20

12

21

15

A. chilensis

Fruit set (no. fruits per flower)

2000–2001

13

11

13

35

26

24

26

20

 

Fruit set (no. fruits per flower)

1999–2000

3

8

21

6

19

6

 

Pollen deposition (mean no. of pollen grains per stigma)

2000–2001

12

10

11

22

23

24

21

18

 

Pollen deposition (mean no. of pollen grains per stigma)

1999–2000

 

Pollinator visitation (no. flowers visited in 10 min.)

2000–2001

12

27

32

25

34

19

45

37

 

Pollinator visitation (no. flowers visited in 10 min.)

1999–2000

17

31

29

14

21

11

 

Seed set (no. seeds per fruit or no. seeds per flower)

2000–2001

13

11

11

35

26

20

26

20

 

Seed set (no. seeds per fruit or no. seeds per flower)

1999–2000

C. diemii

Fruit set (no. fruits per flower)

2000–2001

9

9

18

9

13

13

 

Fruit set (no. fruits per flower)

1999–2000

9

14

19

5

16

6

 

Pollia removal (mean no. of pollia removed)

2000–2001

 

Pollinator visitation (no. flowers visited in 10 min.)

2000–2001

 

Pollinator visitation (no. flowers visited in 10 min.)

1999–2000

28

40

50

6

29

7

 

Seed set (no. seeds per fruit or no. seeds per flower)

2000–2001

6

6

3

8

8

7

 

Seed set (no. seeds per fruit or no. seeds per flower)

1999–2000

 

Pollen deposition

1999–2000

5

12

17

3

16

6

R. magellanicum

Fruit set (no. fruits per flower)

2000–2001

24

2

20

5

6

2

9

1

 

Fruit set (no. fruits per flower)

1999–2000

20

4

26

5

7

3

9

2

 

Pollen deposition (mean no. of pollen grains per stigma)

2000–2001

15

2

12

5

5

1

9

1

 

Pollen deposition (mean no. of pollen grains per stigma)

1999–2000

6

3

16

3

5

1

 

Pollinator visitation (no. flowers visited in 10 min.)

2000–2001

 

Pollinator visitation (no. flowers visited in 10 min.)

1999–2000

42

7

28

10

11

5

13

2

 

Seed set (no. seeds per fruit or no. seeds per flower)

2000–2001

 

Seed set (no. seeds per fruit or no. seeds per flower)

1999–2000

   Notes: For each variable, each observation represents a different individual plant, except pollinator visitation, for which occasionally the same individual plant was sampled at different times. Abbreviations are: LL = Llao Llao, CL = Cerro López, S = Safariland, AG = Arroyo Goye, M = Lago Mascardi, Q = Quetrihué, (c) = cattle, and (nc) = no cattle.



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