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Table 4 Monthly-level smoothing functions and their output for hour of day effects from three separate GAMMs predicting water temperature, depth, and rate of vertical movement (ROVM) by tagged walleye in eastern Lake Ontario

From: Foraging activity and habitat use throughout an annual migration of adult walleye (Sander vitreus) from the Trent River in eastern Lake Ontario

 

Temperature

Depth

ROVM

Month

EDF

F

P-value

EDF

F

P-value

EDF

F

P-value

January

1.0

0.953

0.329

3.8

12.218

 < 0.001

1.0

4.570

0.033

February

1.0

0.416

0.519

2.1

4.150

0.014

2.6

3.925

0.008

March

6.3

37.408

 < 0.001

1.0

0.909

0.340

1.0

0.004

0.949

April

4.5

17.118

 < 0.001

1.0

1.291

0.256

1.0

0.000

0.984

May

1.0

12.853

 < 0.001

3.4

13.382

 < 0.001

3.3

10.731

 < 0.001

June

4.6

22.976

 < 0.001

4.0

14.900

 < 0.001

8.2

49.461

 < 0.001

July

6.8

36.923

 < 0.001

6.3

12.154

 < 0.001

8.0

50.088

 < 0.001

August

3.6

10.374

 < 0.001

1.0

0.003

0.957

7.2

8.916

 < 0.001

September

5.5

3.569

0.016

1.0

1.321

0.250

6.4

20.207

 < 0.001

October

4.0

7.716

 < 0.001

1.0

5.787

0.016

7.0

20.529

 < 0.001

November

1.0

17.812

 < 0.001

7.5

6.406

 < 0.001

1.0

2.666

0.102

December

1.0

1.378

0.240

1.0

0.049

0.825

1.0

0.676

0.411

  1. An EDF of one indicates a linear relationship, and higher EDF values indicate increasingly non-linear relationships
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Animal Biotelemetry

ISSN: 2050-3385