Ecological Archives E091-155-A9

A. Hector, Y. Hautier, P. Saner, L. Wacker, R. Bagchi, J. Joshi, M. Scherer-Lorenzen, E. M. Spehn, E. Bazeley-White, M. Weilenmann, M. C. Caldeira, P. G. Dimitrakopoulos, J. A. Finn, K. Huss-Danell, A. Jumpponen, C. P. Mulder, C. Palmborg, J. S. Pereira, A. S. D. Siamantziouras, A. C. Terry, A. Y. Troumbis, B. Schmid, and M. Loreau. 2010. General stabilizing effects of plant diversity on grassland productivity through population asynchrony and overyielding. Ecology 91:2213–2220.

Appendix I. Summary of the analysis of temporal CVs as a function of overyielding for the two-species mixtures only.

TABLE. I1. Estimates, standard deviation and 95% confidence intervals for the fixed and random effetcs of the analysis of temporal CVs as a function of overyielding for the two-species mixtures only.

 

num df

den df

F value

P value

 

(Intercept)

1

45

37.25429

<.0001

 

log(Dmean+1)

1

45

0.35498

0.5543

 
           

Random effects:

         

Formula:

~1| site

       
 

(Intercept)

       

StdDev:

26.9154

       
           

Formula:

~1|mixN %in% site

       
 

(Intercept)

Residual

     

StdDev:

15.00799

14.878

     
           

Fixed effects:

CV~log(Dmean+1)

       
 

Value

Std.Error

df

t value

P value

(Intercept)

61.19758

9.979963

45

6.132044

0.0000

log(Dmean+1)

-2.91136

4.886425

45

-0.595805

0.5543

           

Approximate 95% conifdence intervals

     

Fixed effects:

lower

est.

upper

(Intercept)

41.0969

61.197576

81.298253

log(Dmean+1)

-12.75312

-2.911358

6.930407

       

Random effects: Level: site

lower

est.

upper

sd((Intercept))

15.2046

26.9154

47.64603

       

Random effects: Level: mixN

lower

est.

upper

sd((Intercept))

10.55327

15.00799

21.34313

       

Within-group standard error:

lower

est.

upper

 

12.1193

14.878

18.26465


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