Ecological Archives A016-065-A4

John J. Borkowski, P. J. White, Robert A. Garrott, Troy Davis, Amanda R. Hardy, and Daniel J. Reinhart. 2006. Behavioral responses of bison and elk in Yellowstone to snowmobiles and snow coaches. Ecological Applications 16:1911–1925.

Appendix D. SAS statistical software output from the a priori model for bison best supported by the data.

Estimates, standard errors, and P values for the AC logit and LR logit from the best a priori bison model. Values were extracted from the SAS statistical software output given below.

Effect

AC logit estimate

AC logit SE(est)

P

LR logit estimate

LR logit SE(est)

P

intercept

-0.778

0.328

0.0178

0.683

0.245

0.0054

sppnum

-1.891

0.550

0.0006

-2.827

0.405

0.0001

dist

-3.794

0.556

0.0001

-3.102

0.461

0.0001

cumvis

0.026

0.005

0.0001

0.000

0.005

0.9634

sppnum × dist

0.896

0.797

0.2605

-0.523

0.668

0.4337

 
 
 
 
 
 
 

hact = AP

1.574

0.271

0.0001

0.387

0.307

0.2067

= D

-0.211

0.245

0.3895

0.289

0.243

0.2339

= S

-0.122

0.160

0.4483

0.180

0.166

0.2788

= N

-1.242

0.199

0.0001

-0.856

0.198

0.0001

hab = F

-0.486

0.316

0.1234

-0.687

0.257

0.0075

= RD

2.941

0.343

0.0001

0.869

0.312

0.0054

= TH

-0.954

0.370

0.0098

0.440

0.307

0.1524

= M

-1.500

0.323

0.0001

-0.622

0.232

0.0074

sppnum × hab= F

1.049

0.502

0.0367

1.351

0.446

0.0025

= RD

-0.689

0.612

0.2604

-0.526

0.570

0.3556

= TH

-0.093

0.532

0.8612

-1.037

0.502

0.0388

= M

-0.267

0.501

0.5937

0.212

0.392

0.5893

dist*hact = AP

-2.081

0.895

0.0200

-0.164

0.607

0.7866

= D

1.142

0.445

0.0103

0.103

0.411

0.8027

= S

0.293

0.352

0.4061

-0.751

0.281

0.0075

= N

0.646

0.405

0.1112

0.813

0.300

0.0067

dist*hab = F

1.580

0.405

0.0001

1.729

0.399

0.0001

= RD

-6.486

0.827

0.0001

-4.072

0.941

0.0001

= TH

2.534

0.401

0.0001

0.745

0.450

0.0980

= M

2.373

0.384

0.0001

1.598

0.379

0.0001





[Back to A016-065]