Ecological Archives E096-024-A4

Kylla M. Benes and Robert C. Carpenter. 2015. Kelp canopy facilitates understory algal assemblage via competitive release during early stages of secondary succession. Ecology 96:241251. http://dx.doi.org/10.1890/14-0076.1

Appendix D. ANOVA of recruitment of each macroalgal group following the canopy manipulation.

Table D1. The effects of canopy, block, and plot (main effects) in the days (time effects) following the initiation of the experiment for the recruitment of each functional group of algae. The experiment was designed as a split-plot and data were arcsine transformed then analyzed using a mixed model ANOVA in which canopy and plot were treated as fixed factors and block and days as random factors. Dashes are used to represent factors in which a statistical test was not valid. Significant P values are shown in bold.

Source (Main Effects)

MS

df

F ratio

P value

Foliose Red Algae

       

Canopy

0.076

1

0.521

0.523

Block

0.250

3

0.143

0.933

Block × Canopy

0.146

3

   

Plot

0.632

2

7.827

0.007

Canopy × Plot

0.328

2

4.056

0.045

Plot × Block + Canopy × Plot × Block

0.081

12

   

Error

1.743

22

 

 

Brown Algae

       

Canopy

5.610

1

47.011

0.006

Block

0.159

3

3.698

0.027

Block × Canopy

0.119

3

   

Plot

0.076

2

2.263

0.147

Canopy × Plot

0.226

2

6.715

0.011

Plot × Block + Canopy × Plot × Block

0.034

12

   

Error

0.043

22

 

 

Articulates Corallines

       

Canopy

6.166

1

40.039

0.008

Block

0.251

3

1.755

0.185

Block × Canopy

0.154

3

   

Plot

2.153

2

17.962

<0.001

Canopy × Plot

0.086

2

0.713

0.510

Plot × Block + Canopy × Plot × Block

0.120

12

   

Error

0.143

22

 

 

Crustose Corallines

       

Canopy

0.154

1

0.138

0.735

Block

0.061

3

0.553

0.651

Block × Canopy

1.115

3

   

Plot

0.792

2

6.196

0.014

Canopy × Plot

0.488

2

3.817

0.052

Plot × Block + Canopy × Plot × Block

0.128

12

   

Error

0.111

22

 

 

         

Source (Time Effects)

MS

df

F ratio

P value

Foliose Red Algae

       

Days

0.098

6

4.364

0.002

Days × Canopy

0.014

6

0.632

0.704

Days × Block + Days × Canopy × Block

0.022

36

   

Days × Plot

0.005

12

0.473

0.918

Days × Canopy × Plot

0.030

12

2.099

0.019

Days × Plot × Block

0.010

36

-

-

Days × Block × Canopy × Plot + Error

0.014

168

 

 

Brown Algae

       

Days

0.184

6

13.966

<0.001

Days × Canopy

0.182

6

13.827

<0.001

Days × Block + Days × Canopy × Block

0.013

36

   

Days × Plot

0.038

12

1.764

0.093

Days × Canopy × Plot

0.038

12

2.135

0.017

Days × Plot × Block

0.022

36

   

Days × Block × Canopy × Plot + Error

0.018

168

 

 

Articulates Corallines

       

Days

0.179

6

6.305

<0.001

Days × Canopy

0.358

6

12.611

<0.001

Days × Block + Days × Canopy × Block

0.028

36

   

Days × Plot

0.115

12

3.022

0.005

Days × Canopy × Plot

0.037

12

1.407

0.167

Days × Plot × Block

0.038

36

   

Days × Block × Canopy × Plot + Error

0.026

168

 

 

Crustose Corallines

       

Days

0.462

6

5.518

<0.001

Days × Canopy

0.399

6

4.769

0.001

Days × Block + Days × Canopy × Block

0.084

36

   

Days × Plot

0.047

12

0.708

0.734

Days × Canopy × Plot

0.060

12

1.390

0.175

Days × Plot × Block

0.066

36

   

Days × Block × Canopy × Plot + Error

0.043

168

 

 


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