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Table 1 Candidate models for caribou resource selection in Noatak National Preserve, Alaska

From: Effects of environmental features and sport hunting on caribou migration in northwestern Alaska

Model number

Model

0

Null

1

Rugged

2

Hunting

3

River

4

LandCover

5

Rugged + Hunting

6

Rugged + River

7

Rugged + LandCover

8

Hunting + River

9

Hunting + LandCover

10

River + LandCover

11

Rugged + Hunting + LandCover

12

Rugged + Hunting + River

13

Rugged + River + LandCover

14

Hunting + River + LandCover

15

Rugged + Hunting + River + LandCover

  1. Covariates considered included terrain ruggedness (Rugged), sport hunting activity (Hunting), river area (River) and land cover type (LandCover). LandCover consisted of seven parameters, representing the proportion of each land cover type. In addition, each candidate model included a spline of the distance to previous used location to help reduce bias in step selection function estimation