Ecological Archives A017-093-A4

Irene Tetreault and Richard F. Ambrose. 2007. Temperate marine reserves enhance targeted but not untargeted fishes in multiple no-take MPAs. Ecological Applications 17:2251–2267.

Appendix D. Multivariate analyses of density.

TABLE D1. Multivariate analyses of density: (1) target-harvested fishes (all sizes, kelp bass and sheephead, barred sand bass excluded due to lack of sufficient data); (2) target-harvested fishes (legal sizes, kelp bass and sheephead, barred sand bass excluded due to lack of sufficient data); (3) incidental-harvested fishes (all sizes, black surfperch, blacksmith, halfmoon, opaleye); and (4) non-harvested fishes (all sizes, garibaldi, señorita, rock wrasse).

1. Mean Density, Target-Harvested Fishes (all sizes)

Source

Pillai Trace

F

Numerator df

Denominator df

P

  

Reserve (R)

1.934

5.817

40

8

0.007

  

Site (S)

0.486

10.758

8

268

<0.001

  

Year (Y)

1.854

2.536

40

8

0.083

  

R × S

0.075

1.303

8

268

0.242

  

R × Y

0.795

5.804

2

3

0.093

  

S × Y

0.069

1.202

8

268

0.298

  

R × S × Y

0.024

0.404

8

268

0.918

  

Univariate F test, Reserve effect

F value

Univariate F test, Site effect

F value

  

P. clathratus (kelp bass)

541.692

P. clathratus

17.605

  

S. pulcher (CA sheephead)

13.481

S. pulcher  

9.481

  

 

 

 

 

 

 

2. Mean Density, Target-Harvested Fishes (legal sizes ≥ 30 cm TL)

Source
Pillai Trace
F value
Numerator df
Denominator df
P

Reserve (R)

1.844

2.362

40

8

0.100

Site (S)

0.176

3.224

8

268

0.002

Year (Y)

1.819

2.006

40

8

0.150

R × S

0.174

3.184

8

268

0.002

R × Y

0.739

4.241

2

3

0.134

S × Y

0.112

2.119

8

268

0.034

R × S × Y

0.086

1.506

8

268

0.155

Univariate F test, Reserve effect

F value

Univariate F test, Site effect

F value

P. clathratus (kelp bass)

45.609

P. clathratus

3.518

S. pulcher (CA sheephead)

2.509

S. pulcher

3.079

 

 

 

 

3. Mean Density, Incidental-Harvested Fishes (all sizes)

Source
Pillai Trace
F value
Numerator df
Denominator df
P

Reserve (R)

0.942

4.074

4

1

0.354

Site (S)

0.495

4.736

16

536

<0.001

Year (Y)

0.883

1.891

4

1

0.493

R × S

0.0928

0.796

16

536

0.691

R × Y

0.665

0.496

4

1

0.772

S × Y

0.154

1.342

16

536

0.167

R × S × Y

0.105

0.900

16

536

0.569

Univariate F test, Reserve effect

F value

Univariate F test, Site effect

F value

G. nigricans (opaleye)

3.249

C. punctipinnis

15.716

M. californiensis (halfmoon)

1.882

G. nigricans

4.756

C. punctipinnis (blacksmith)

0.563

E. jacksoni

2.734

E. jacksoni (black surfperch)

<0.001

M. californiensis

1.744

 

 

 

 

4. Mean Density, Non-Harvested Fishes (all sizes)

Source
Pillai Trace
F value
Numerator df
Denominator df
P

Reserve (R)

0.425

0.493

3

2

0.723

Site (S)

0.572

7.892

12

402

<0.001

Year (Y)

0.627

1.119

3

2

0.504

R × S

0.186

2.215

12

402

0.011

R × Y

0.459

0.565

3

2

0.689

S × Y

0.160

1.883

12

402

0.035

R × S × Y

0.210

2.522

12

402

0.003

Univariate F test, Reserve effect

F value

Univariate F test, Site effect

F value

O. californica (señorita)

1.120

H. semicinctus

18.921

H. semicinctus (rock wrasse)

0.170

H. rubicundus

6.494

H. rubicundus (garibaldi)

0.102

O. californica

2.865

 


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