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Table 13 General linear model of Sqrt(landbird 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

−0.41

   

0.0519

Slope

−0.01

1

0.20

0.28

0.5981

Month

 

11

14.27

1.83

0.0480

Year

 

3

7.26

3.41

0.0177

Sqrt(% algal wrack)

0.04

1

1.32

1.86

0.1732

Sqrt(Distance to estuary)

0.00

1

4.35

6.13

0.0137

Sqrt(Human activity)

0.02

1

0.98

1.39

0.2399

Tide

0.06

1

1.14

1.61

0.2058

Month*Tide

 

11

5.91

0.76

0.6840

Tide*Slope

−0.02

1

0.82

1.16

0.2831

# observers

 

1

0.23

0.32

0.5726

G

 

1

0.14

0.19

0.6623

W

 

1

0.12

0.16

0.6855

F

 

1

0.16

0.23

0.6338

K

 

1

0.57

0.80

0.3723

T

 

1

1.32

1.85

0.1741

N

 

1

0.37

0.52

0.4702

C

 

1

0.79

1.12

0.2915

B

 

1

0.01

0.01

0.9285

  1. R-square = 0.16, F40,379 = 1.86, P 0.0016. Estuary refers to the inverse of the shortest distance from the transect to an estuary. Letter codes refer to observers.