Ecological Archives E084-068-A1

Marcelo A. Aizen. 2003. Influences of animal pollination and seed dispersal on winter flowering in a temperate mistletoe. Ecology 84:2613–2627.

Appendix A. ANOVAs testing the effects of supplemental hand vs. open pollination (treatment) and month of flower opening on (A) the mean number of pollen tubes/style and (B) fruit set (no. fruits/ no. flowers). See Figs. 3 and 4 in text for data summaries.

Source

Llao-Llao

Península

df

SS

F

P

df

SS

F

P

A) Pollen tubes

1997

 

 

 

 

 

 

 

 

   Treatment

1

1466.9

11.61

0.0008

1

970.2

7.14

0.0087

   Month

9

7471.1

6.57

<0.0001

8

4328.6

3.98

0.0003

   Month × treatment

9

1644.1

1.45

0.17

8

843.1

0.78

0.62

   Plant

9

3771.2

3.32

0.001

9

4825.4

3.94

0.0002

   Error

151

19077.3

 

 

113

15362.2

 

 

 

 

 

 

 

 

 

 

 

1998

 

 

 

 

 

 

 

 

   Treatment

1

5049.9

21.16

<0.0001

1

3134.5

14.83

<0.0001

   Month

8

9365.7

4.90

<0.0001

8

6277.8

3.71

0.0004

   Month × treatment

8

3118.9

1.63

0.11

8

6949.9

4.11

<0.0001

   Plant

22

24700.8

4.70

<0.0001

20

38901.2

9.20

<0.0001

   Error

307

73283.9

 

 

291

61497.0

 

 

 

 

 

 

 

 

 

 

 

B) Fruit set

1997

 

 

 

 

 

 

 

 

   Treatment

1

1.3257

30.48

<0.0001

1

0.3090

4.89

0.029

   Month

9

2.5865

6.61

<0.0001

9

2.1109

3.71

0.0004

   Month × treatment

9

0.8865

2.27

0.022

9

0.7728

1.36

0.21

   Plant

7

4.2545

13.98

<0.0001

7

2.2869

5.17

<0.0001

   Error

124

5.3925

 

 

109

6.8816

 

 

 

 

 

 

 

 

 

 

 

1998

 

 

 

 

 

 

 

 

   Treatment

1

0.8257

13.04

0.0004

1

0.7609

10.70

0.0012

   Month

8

2.3578

4.66

<0.0001

8

1.3351

2.35

0.019

   Month × treatment

8

0.5284

1.04

0.40

8

1.0180

1.79

0.079

   Plant

22

7.4068

5.32

<0.0001

17

5.6556

4.68

<0.0001

   Error

331

20.9522

 

 

274

19.4828

 

 

   Notes: Individual plant was included as a blocking factor. For 1997, this analysis considered the subset of plants that had both open- and hand-pollinated flowers (see Materials and Methods: Field sampling). For Península, 1997, pollen tube counts from the few flowers opening in December were excluded from the analysis because only styles from control flowers could be collected for that month. Because data sets were not completely balanced, F values were estimated from Type III sums of squares (SAS 1988).

Literature cited

SAS. 1988. SAS/STAT user's Guide. Release 6.03 edition. SAS Institute, Cary, North Carolina, USA


[Back to E084-068]