Ecological Archives E085-098-A3

Daniel S. Gruner. 2004. Attenuation of top-down and bottom-up forces in a complex terrestrial community. Ecology 85:3010–3022.

Appendix C. A table showing multivariate ANOVA and profile analysis results for arthropod trophic density and biomass.

Table C1: Multivariate ANOVA results for (A) density and (B) biomass of all trophic levels (natural log transformed) from final sampling of April/May 2001.

 

 

 

 

 

Profile Analysis

 

 

MANOVA

 

  H-D

D-P

   H-P

Source

df

F

P

df

F

P

F

P

F

P

                     

Density Load

                   

   Fertilization (F)

3,5

7.68

0.026

1,7

7.49

0.029

2.25

0.177

6.18

0.042

   Cage (C)

3,5

3.34

0.114

1,7

0.10

0.757

8.26

0.024

5.51

0.051

   F × C

3,5

1.83

0.258

1,7

0.38

0.557

0.50

0.504

0.02

0.906

   Block (B)

21,14

1.80

0.124

1,7

1.22

0.402

4.36

0.035

1.31

0.365

   F × B

21,14

0.80

0.690

1,7

0.30

0.934

0.75

0.646

0.99

0.505

   C × B

21,14

0.87

0.629

1,7

0.70

0.674

1.09

0.456

1.17

0.421

Biomass Load

                   

   Fertilization (F)

3,5

6.73

0.033

1,7

9.64

0.017

0.01

0.932

2.94

0.130

   Cage (C)

3,5

3.52

0.105

1,7

0.77

0.410

3.99

0.086

0.38

0.558

   F × C

3,5

0.47

0.717

1,7

1.96

0.204

0.46

0.517

1.83

0.218

   Block (B)

21,14

1.51

0.210

1,7

0.46

0.835

3.03

0.083

0.24

0.962

   F × B

21,14

1.27

0.320

1,7

0.14

0.991

1.76

0.238

0.57

0.765

   C × B

21,14

1.95

0.094

1,7

0.53

0.787

2.86

0.095

0.87

0.573

   Note: Profile analysis gives pairwise comparisons of trophic level responses, where H = herbivores, D = detritivores, and P = predators. All F tests use Wilks' lambda statistic. Boldface P values are significant at  = 0.05.

Numerator, denominator degrees of freedom.



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