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Table 6 Effect of raking treatment on beetle activity one, two, and three years post-fire for sugar pine in Sequoia and Kings Canyon national parks, California, USA. Beetle activity was modeled using mixed effects logistic regression. Fixed effects were burn unit (BurnUnit), raking treatment (Unraked), and pre-fire beetle activity (Beetles). Plot was treated as a random effect. Estimate is the coefficient from the GLMM, with associated standard error (SE) and P-value.

From: The Effects of Raking on Sugar Pine Mortality following Prescribed Fire in Sequoia and Kings Canyon National Parks, California, USA

Fixed effects

 

Year 1

  

Year 2

  

Year 3

 

Estimate

SE

P-value

Estimate

SE

P-value

Estimate

SE

P-value

Intercept

−1.436

0.427

<0.001

−1.532

0.393

<0.001

−1.124

0.414

0.007

Redwood Canyon

0.669

0.503

0.183

1.174

0.446

0.008

0.495

0.497

0.320

Wall Spring

−0.599

0.520

0.249

−0.075

0.451

0.869

−0.422

0.509

0.407

Unraked

0.552

0.231

0.017

0.469

0.217

0.031

0.615

0.216

0.004

Beetles

2.198

0.406

<0.001

1.726

0.390

<0.001

2.250

0.431

<0.001