Ecological Archives E089-018-A6

John N. Griffin, Kate L. de la Haye, Stephen J. Hawkins, Richard C. Thompson, and Stuart R. Jenkins. 2008. Predator diversity and ecosystem functioning: density modifies the effect of resource partitioning. Ecology 89:298–305.

Appendix F. Analysis of species-specific resource consumption.

TABLE F1. Analysis of species-specific resource consumption. Permutated analysis of variance (PERMANOVA) on Bray-Curtis similarities derived from square-root transformed interaction strengths. Comparisons show a posteriori pairwise tests between individual treatments.

Source of variation

df

MS

F

P

Species

3

7852.8

3.98

     <0.001

Density

1

3434.8

4.14

0.01

Species × density

3

830.56

0.42

0.95

Residual

40

 

 

 

 

 

 

 

 

Comparisons

t

P

 

 

C. pagurus vs. C. maenas

2.4688

0.0006

 

 

C. pagurus vs. N. puber

2.1046

0.0034

 

 

C. maenas vs. N. puber

2.1374

0.0018

 

 

C. pagurus vs. polyculture

2.3389

0.0022

 

 

C. maenas vs. polyculture

1.8507

0.0124

 

 

N. puber vs. polyculture

0.9066

0.5192

 

 
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