Table 1 Ranked candidate models of resource selection by northern spotted owls and barred owls in Coast Range of western Oregon, USA.

From: Three-dimensional partitioning of resources by congeneric forest predators with recent sympatry

Rank

Model covariates

Explanation

K

ΔWAIC

1

HEIGHT + CANCOV + HEIGHT × CANCOV + D4to8 + S2to4 + HEIGHT × D4to8 + SRI + TPI + TPI2 + SLOPE + STREAM

full model with canopy structure HEIGHT

11

0

2

RUMPLE + CANCOV + RUMPLE × CANCOV + D4to8 + S2to4 + SRI + TPI + TPI2 + SLOPE + STREAM

full model with canopy structure RUMPLE

10

215.84

3

HEIGHT + CANCOV + HEIGHT × CANCOV + SRI + TPI + TPI2 + SLOPE + STREAM

canopy structure HEIGHT and abiotic

8

236.05

4

RUMPLE + CANCOV + RUMPLE × CANCOV + SRI + TPI + TPI2 + SLOPE + STREAM

canopy structure RUMPLE and abiotic

8

535.10

5

HEIGHT + CANCOV + HEIGHT × CANCOV + D4to8 + S2to4 + HEIGHT × D4to8

canopy structure HEIGHT and vertical variation

6

1745.70

6

D4to8 + S2to4 + SRI + TPI + TPI2 + SLOPE + STREAM

vertical variation and abiotic

7

1970.64

7

RUMPLE + CANCOV + RUMPLE × CANCOV + D4to8 + S2to4

canopy structure RUMPLE and vertical variation

6

2137.13

8

HEIGHT + CANCOV + HEIGHT × CANCOV

canopy structure HEIGHT

3

2451.31

9

RUMPLE + CANCOV + RUMPLE × CANCOV

canopy structure RUMPLE

3

2882.56

10

SRI + TPI + TPI2 + SLOPE + STREAM

abiotic features

5

3102.12

11

D4to8 + S2to4

vertical variation

2

4069.30

12

Null

selection is random

0

5839.80

  1. Rumple index and dominant canopy height had a Spearman’s rank coefficient ≥0.7 and were not included in the same model. The top model had a Watanabe-Akaike information criterion (WAIC) of 22953.8. Abbreviations: K, number of variables in model; HEIGHT, dominant canopy height; RUMPLE, rumple index; CANCOV, canopy cover >2 m; D4to8, cover from 4–8 meters; S2to4, sub-canopy cover from 2–4 meters; STREAM, distance to nearest permanent stream; SRI, solar radiation index; TPI, topographic position index.
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