Ecological Archives E089-045-A3

Josep Maria Espelta, Pilar Cortés, Roberto Molowny-Horas, Belén Sánchez-Humanes, and Javier Retana. 2008. Masting mediated by summer drought reduces acorn predation in Mediterranean oak forests. Ecology 89:805–817.

Appendix C. Components of population-level variation in acorn production. Fl. t = number of flowering trees (those producing an initial acorn crop), Fr. t = number of fruiting trees (those producing a mature acorn crop), CVi = mean individual coefficient of variation of acorn production across years, r = individual synchrony, CVp = population coefficient of variation of acorn production across years. Data is shown for Q. ilex, Q. humilis and for the two species together (Q. ilex  + Q. humilis ).

Plot

 

Q. ilex

 

Q. humilis

 

Q. ilex  + Q. humilis

   

Initial

Mature

 

Initial

Mature

 

Initial

Mature

   

Fl.t

CVi

r

CVp

Fr. t

CVi

r

CVp

 

Fl.t

CVi

r

CVp

Fr. t

CVi

r

CVp

 

CVi

r

CVp

CVi

r

CVp

1

 

12

1.84

0.42

1.51

10

2.35

0.96

2.14

 

13

1.64

0.44

1.21

8

2.36

0.87

1.57

 

1.74

0.30

1.09

2.35

0.90

1.97

2

 

14

1.95

0.69

1.43

14

2.25

0.74

1.89

 

13

1.68

0.30

0.98

10

1.99

0.30

1.04

 

1.81

0.05

0.87

2.12

0.45

1.63

3

 

11

2.09

0.64

1.80

11

2.13

0.66

1.95

 

10

1.87

0.36

0.98

8

1.84

0.61

1.25

 

1.98

0.19

1.72

1.98

0.44

1.90

4

 

13

2.16

0.95

1.92

13

2.58

1.00

2.60

 

13

1.67

0.69

1.40

12

2.00

0.68

1.97

 

1.92

0.39

1.36

2.29

0.83

2.46

5

 

15

2.18

0.84

2.08

15

2.27

0.85

2.19

 

14

1.37

0.29

0.87

13

2.45

0.84

1.80

 

1.78

0.44

1.86

2.36

0.85

2.15

6

 

14

2.31

0.95

2.18

14

2.49

0.98

2.50

 

14

1.56

0.29

1.00

13

2.05

0.46

1.64

 

1.94

0.18

1.52

2.27

0.69

2.38

7

 

14

1.72

0.41

1.06

13

2.26

0.94

2.07

 

9

1.58

0.27

0.87

9

2.16

0.36

1.07

 

1.65

0.09

0.97

2.21

0.51

1.82

8

 

13

1.93

0.55

1.44

12

2.08

0.76

1.91

 

8

1.83

0.21

1.54

6

2.06

0.87

1.96

 

1.88

0.14

1.27

2.07

0.80

1.92

9

 

8

2.01

0.55

.81

8

2.22

0.53

1.46

 

11

1.64

0.15

0.76

7

2.40

0.66

2.12

 

1.82

-0.08

0.68

2.31

0.70

1.53

10

 

13

1.64

0.62

1.27

13

2.08

0.77

1.73

 

6

1.40

0.07

0.53

5

1.91

0.52

1.22

 

1.52

0.34

1.14

1.99

0.69

1.69

11

 

12

1.65

0.64

1.34

12

2.01

0.80

1.92

 

11

1.68

0.26

0.80

11

2.57

0.23

.89

 

1.66

0.03

0.78

2.29

0.22

1.49

12

 

13

1.76

0.69

1.66

13

1.99

0.81

1.91

 

14

1.38

0.21

0.97

13

2.16

0.43

1.52

 

1.57

0.04

1.18

2.08

0.53

1.86

13

 

13

1.52

0.54

.87

11

2.43

0.77

1.98

 

8

1.62

0.35

1.20

6

1.83

0.79

1.88

 

1.57

-0.02

0.72

2.13

0.77

1.97

14

 

12

1.87

0.55

1.50

12

2.08

0.55

1.72

 

11

1.50

0.18

0.66

7

2.02

0.40

1.48

 

1.68

0.03

1.20

2.05

0.48

1.69

15

 

15

1.81

0.62

1.75

14

2.13

0.78

2.10

 

13

1.71

0.24

0.76

11

2.27

0.32

1.62

 

1.76

-0.04

1.51

2.20

0.40

2.08


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