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Table 12 General linear model of Sqrt(other waterbird abundance)

From: Temporal and spatial variation in bird and human use of beaches in southern California

Independent variable

Effect

df

 SS

F Ratio

 P

Intercept

0.50

   

0.4455

Slope

0.01

1

0.06

0.01

0.9251

Month

 

11

34.58

0.47

0.9227

Year

 

3

25.53

1.27

0.2859

Sqrt(% algal wrack)

0.11

1

9.26

1.38

0.2414

Sqrt(Distance to estuary)

−0.01

1

34.78

5.17

0.0235

Sqrt(Human activity)

−0.10

1

24.42

3.63

0.0574

Tide

0.19

1

11.15

1.66

0.1985

Month*Tide

 

11

65.18

0.88

0.5588

Tide*Slope

−0.01

1

0.64

0.10

0.7577

# observers

 

1

4.37

0.65

0.4205

G

 

1

1.11

0.17

0.6847

W

 

1

4.08

0.61

0.4362

F

 

1

0.00

0.00

0.9786

K

 

1

0.06

0.01

0.9267

T

 

1

1.80

0.27

0.6048

N

 

1

7.50

1.12

0.2916

C

 

1

12.46

1.85

0.1743

B

 

1

0.08

0.01

0.9121

  1. R-square = 0.21, F40,379 = 2.58, P <.0001. Estuary refers to the inverse of the shortest distance from the transect to an estuary. Letter codes refer to observers.