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)
20002001
112
120
119
213
55
28
135
216
Fruit set (no. fruits per flower)
19992000
114
35
117
93
101
26
73
39
Pollen deposition (mean no. of pollen grains per stigma)
20002001
70
79
73
143
39
15
74
108
Pollen deposition (mean no. of pollen grains per stigma)
19992000
27
22
38
33
37
14
27
22
Pollinator visitation (no. flowers visited in 10 min.)
20002001
62
99
69
105
51
42
68
60
Pollinator visitation (no. flowers visited in 10 min.)
19992000
150
83
154
127
141
50
103
83
Seed set (no. seeds per fruit or no. seeds per flower)
20002001
111
116
115
198
52
28
133
203
Seed set (no. seeds per fruit or no. seeds per flower)
19992000
21
16
27
28
20
12
21
15
A. chilensis
Fruit set (no. fruits per flower)
20002001
13
11
13
35
26
24
26
20
Fruit set (no. fruits per flower)
19992000
3
8
21
6
19
6
—
—
Pollen deposition (mean no. of pollen grains per stigma)
20002001
12
10
11
22
23
24
21
18
Pollen deposition (mean no. of pollen grains per stigma)
19992000
—
—
—
—
—
—
—
—
Pollinator visitation (no. flowers visited in 10 min.)
20002001
12
27
32
25
34
19
45
37
Pollinator visitation (no. flowers visited in 10 min.)
19992000
17
31
29
14
21
11
—
—
Seed set (no. seeds per fruit or no. seeds per flower)
20002001
13
11
11
35
26
20
26
20
Seed set (no. seeds per fruit or no. seeds per flower)
19992000
—
—
—
—
—
—
—
—
C. diemii
Fruit set (no. fruits per flower)
20002001
9
9
18
9
—
—
13
13
Fruit set (no. fruits per flower)
19992000
9
14
19
5
—
—
16
6
Pollia removal (mean no. of pollia removed)
20002001
—
—
—
—
—
—
—
—
Pollinator visitation (no. flowers visited in 10 min.)
20002001
—
—
—
—
—
—
—
—
Pollinator visitation (no. flowers visited in 10 min.)
19992000
28
40
50
6
—
—
29
7
Seed set (no. seeds per fruit or no. seeds per flower)
20002001
6
6
3
8
—
—
8
7
Seed set (no. seeds per fruit or no. seeds per flower)
19992000
—
—
—
—
—
—
—
—
Pollen deposition
19992000
5
12
17
3
—
—
16
6
R. magellanicum
Fruit set (no. fruits per flower)
20002001
24
2
20
5
6
2
9
1
Fruit set (no. fruits per flower)
19992000
20
4
26
5
7
3
9
2
Pollen deposition (mean no. of pollen grains per stigma)
20002001
15
2
12
5
5
1
9
1
Pollen deposition (mean no. of pollen grains per stigma)
19992000
6
3
16
3
5
1
—
—
Pollinator visitation (no. flowers visited in 10 min.)
20002001
—
—
—
—
—
—
—
—
Pollinator visitation (no. flowers visited in 10 min.)
19992000
42
7
28
10
11
5
13
2
Seed set (no. seeds per fruit or no. seeds per flower)
20002001
—
—
—
—
—
—
—
—
Seed set (no. seeds per fruit or no. seeds per flower)
19992000
—
—
—
—
—
—
—
—
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.