Table 2 Regression models testing for the most parsimonious associations with the relative trophic position of A. araneoides (δ¹⁵N _{A. araneoides} - δ¹⁵ N_baseline).

Leaf litter decomposition rate

0.056

0.13

0.610

-3.90

Log (mass, standing litter)

0.129

0.31

0.427

-4.47

Total soil P (0-10 cm depth)

0.129

0.31

0.430

-4.86

Colony size

0.277

0.66

0.225

-5.77

Colony growth

0.551

1.32

0.060

-9.11

Ant density

0.157

0.38

0.379

-4.70

Ant richness

0.206

0.49

0.307

-5.11

Colony growth, leaf litter decomposition rate

0.554

1.33

0.200

-7.15

Colony growth, log (mass, standing litter)

0.978

2.35

0.0005

-28.27*

Colony growth, total soil P

0.583

1.40

0.174

-7.62

Colony growth, litter-ant density

0.561

1.35

0.192

-7.27

Colony growth, litter-ant richness

0.571

1.37

0.184

-7.43