Table 1 Results of the multiple regressions of the relationship between the behavioral diversity metrics (divergence, evenness, and richness) of the Anisoptera and selected environmental variables in two regions of the eastern Amazon, Brazil.

From: Impact of environmental changes on the behavioral diversity of the Odonata (Insecta) in the Amazon

Environmental variable

Beta

Standard error of the beta value

t

p

Divergence (R2 = 0.61)

Intercept

0.724

0.014

49.907

< 0.001*

Habitat Integrity Index (V1)

− 0.103

0.021

− 4.992

< 0.001*

Mean small woody debris cover (V5)

0.028

0.021

1.342

0.189

Litter (V6)

0.039

0.025

1.582

0.124

Riparian canopy (V8)

0.112

0.025

4.492

< 0.001*

Mean small tree canopy cover (V9)

0.023

0.022

1.053

0.300

Substrate D50 (V12)

− 0.047

0.017

− 2.744

< 0.001*

Large woody debris in channel (V15)

− 0.089

0.023

− 3.940

< 0.001*

Thalweg depth (V20)

0.030

0.020

1.515

0.140

Substrate of fine sediment (V21)

0.058

0.022

2.614

0.013*

Fine litter (V23)

− 0.024

0.018

− 1.360

0.183

Mean slope of catchment (V26)

0.050

0.018

2.731

0.010*

Secondary forest in riparian network (V28)

− 0.031

0.018

− 1.740

0.091

Intensity of non-forest land use (V29)

− 0.038

0.021

− 1.826

0.077

Evenness (R2 = 0.46)

Intercept

0.451

0.022

20.254

< 0.001*

Habitat Integrity Index (V1)

− 0.045

0.026

− 1.702

0.098

Electrical conductivity (V2)

0.098

0.029

3.366

< 0.001*

Dissolved oxygen (V3)

0.035

0.026

1.351

0.185

Litter (V6)

0.126

0.035

3.592

< 0.001*

Mid-stream canopy density (V7)

0.031

0.027

1.145

0.260

Mean slope (%) (V11)

0.056

0.029

1.944

0.054

Pipes, influent and effluent (V13)

− 0.038

0.026

− 1.462

0.153

Large woody debris in channel (V15)

0.031

0.027

1.131

0.266

Volume of wood (V18)

− 0.065

0.034

− 1.915

0.064

Mean catchment slope (V26)

− 0.061

0.028

− 2.180

0.036*

Richness (R2 = 0.56)

Intercept

0.032

0.005

6.801

< 0.001*

Habitat Integrity Index (V1)

− 0.031

0.006

− 5.256

< 0.001*

Electrical conductivity (V2)

0.017

0.006

2.787

0.008*

Dissolved oxygen (V3)

0.011

0.005

1.948

0.049*

Mid-stream canopy density (V7)

0.007

0.005

1.398

0.171

Riparian canopy (V8)

0.008

0.007

1.109

0.275

Fast flowing water (V25)

− 0.010

0.006

− 1.722

0.094

Mean catchment slope (V26)

0.008

0.005

1.576

0.124

Secondary forest in riparian network (V28)

− 0.006

0.005

− 1.201

0.238

Intensity of non-forest land use (V29)

− 0.011

0.006

− 1.857

0.072

  1. The codes of the environmental variables are provided in Supplementary Material S2.
  2. *Significant value (p < 0.05).
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