Source of variation

df

MS

F

P

%

Ulva sp.

Site (S)

1

9.263

112.76

< 0.001 ***

6.7

Week (W)

10

2.809

34.19

< 0.001 ***

20.2

Treatment (T)

4

8.795

107.07

< 0.001 ***

25.3

S × W

10

1.219

14.83

< 0.001 ***

8.8

S × T

4

0.588

7.16

< 0.001 ***

1.7

W × T

40

0.262

3.19

< 0.001 ***

7.5

S × W × T

40

0.138

1.65

0.007 *

4

Error

440

0.082

26

Red algal turf

Site (S)

1

15.42

226.19

< 0.001 ***

22.3

Week (W)

10

0.908

13.32

< 0.001 ***

13.2

Treatment (T)

4

1.251

18.35

< 0.001 ***

7.2

S × W

10

0.273

4.01

< 0.001 ***

4

S × T

4

0.424

6.22

< 0.001 ***

2.5

W × T

40

0.091

1.33

0.909 NS

5.3

S × W × T

40

0.037

0.54

0.990 NS

2.1

Error

440

0.068

43.4

Filamentous green algae

Site (S)

1

1.877

14.9

0.001 **

1.1

Week (W)

10

5.553

44.1

< 0.001 ***

33.9

Treatment (T)

4

3.526

28.99

< 0.001 ***

8.6

S × W

10

0.713

5.66

< 0.001 ***

4.4

S × T

4

0.412

3.28

0.0116 *

1

W × T

40

0.439

3.49

< 0.001 ***

10.7

S × W × T

40

0.258

2.05

<0.001 ***

6.3

Error

440

0.126

33.9

Articulated corallines

Week (W)

10

89.653

14.46

< 0.001 ***

27.5

Treatment (T)

4

118.69

19.14

< 0.001 ***

14.6

W × T

40

13.146

2.12

<0.001 ***

16.1

Error

220

6.2

41.8

Upright Gymnogongrus sp.

Site (S)

1

1.055

14.39

<0.001 ***

1.5

Week (W)

10

1.938

26.42

< 0.001 ***

27.5

Treatment (T)

4

0.674

9.19

< 0.001 ***

3.8

S × W

10

0.805

10.98

< 0.001 ***

11.4

S × T

4

0.208

2.83

0.024 *

1.2

W × T

40

0.097

1.32

0.095 NS

5.5

S × W × T

40

0.06

0.823

0.772 NS

3.4

Error

440

0.073

45.7