Ecological Archives E087-178-A1

Geoffrey C. Trussell, Patrick J. Ewanchuk, and Catherine M. Matassa. 2006. The fear of being eaten reduces energy transfer in a simple food chain. Ecology 87:2979–2984.

Appendix A (Table A1). A table providing a full summary of two-way ANOVAs on energy acquired, tissue production, and growth efficiency of Nucella lapillus raised at high and low conspecific density and in the presence and absence of water-borne risk cues released by the predatory green crab ( Carcinus maenas).

Source

df

SS

MS

F

P

Energy Acquired          

   Risk (R)

1

3572693

3572693

30.46

< 0.0001

   Density (D)

1

13455141

13455141

114.71

< 0.0001

   R × D

1

480794

480794

4.10

0.0504

   Error

36

4222646

117296

 

 

Tissue Production
 
 
 
 
 

   Risk (R)

1

3996.56

3996.56

74.26

< 0.0001

   Density (D)

1

198.224

198.224

3.68

0.0629

   R × D

1

519.695

519.695

9.66

0.0037

   Replicate{R, D}

36

1937.35

53.8154

1.12

0.3354

   Error

80

3856.034

48.2004

 

 

Growth Efficiency
 
 
 
 
 

   Risk (R)

1

0.009913

0.009913

21.82

< 0.0001

   Density (D)

1

0.004830

0.004830

10.63

0.0024

   R × D

1

0.000104

0.000104

0.23

0.6345

   Error

36

0.016354

0.000454

 

 



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