Table 1 Multiple predictors of plant-frugivore interaction dissimilarity (βWN)

From: Global and regional ecological boundaries explain abrupt spatial discontinuities in avian frugivory interactions

Parametric coefficients

Estimate

t

P

Intercept

0.997

2964.191

0.001

Ecoregion (same)

−0.070

−36.401

0.001

Biome (same)

−0.002

−3.323

0.044

Smooth Terms

EDF

F

P

s (human disturbance distance)

8.534

29.988

0.001

s (spatial distance)

8.785

65.378

0.001

s (elevational difference)

6.168

47.707

0.001

s (hours distance)

1.558

5.449

0.290

s (months distance)

5.482

6.902

0.075

s (years distance)

7.208

11.848

0.019

s (sampling intensity distance)

1.018

5.182

0.259

s (methods distance)

8.632

16.002

0.005

  1. Here, we used the binary version of ecoregion and biome distance matrices. P values were calculated using a two-tailed statistical test that combines Generalized Additive Models (GAM) and Multiple Regression on distance Matrices (MRM). In this approach, the non-independence of distances from each local network is accounted for in the hypothesis testing by performing 1000 permutations of the response matrix (see “Methods”). EDF represents the effective degrees of freedom for each smooth term in the model. N pairs of networks = 19,110.
  2. Bold P values indicate statistically significant results (P < 0.05).
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