Table 3 Outcomes of the generalised linear models examining the relationships between species richness (using Sobs and the estimator Jacknife2), abundance, and mean temperature for the indigenous, invasive and combined springtail species.

From: Species-energy relationships of indigenous and invasive species may arise in different ways – a demonstration using springtails

 

Single term models

Squared term models

Estimate

s.e.

p

Estimate

s.e.

p

Species richness vs. temperature

S obs

     Indigenous (DE = 57.93%; df = 15)

0.092

0.021

0.001

−0.021

0.015

0.178

     Invasive (DE = 50.37%; df = 15)

0.277

0.074

0.002

−0.076

0.055

0.189

     Combined (DE = 65.13%; df = 15)

0.142

0.029

<0.001

−0.031

0.020

0.152

Jacknife2

     Indigenous (DE = 5.56%; df = 15)

0.035

0.038

0.378

−0.042

0.027

0.139

     Invasive (DE = 24.26%; df = 15)

0.227

0.113

0.065

−0.231

0.079

0.012

     Combined (DE = 24.47%; df = 15)

0.098

0.049

0.063

−0.088

0.029

0.009

Species richness vs. abundance

S obs

     Indigenous (DE = 64.54%; df = 15)

0.308

0.061

<0.001

−0.245

0.093

0.021

     Invasive (DE = 57.29%; df = 15)

0.376

0.079

<0.001

−0.188

0.047

0.002

     Combined (DE = 71.18%; df = 15)

0.374

0.064

<0.001

−0.203

0.080

0.025

Jacknife2

     Indigenous (DE = 35.79%; df = 15)

0.284

0.102

0.015

0.169

0.177

0.355

     Invasive(DE = 22.28%; df = 15)

0.279

0.136

0.060

−0.250

0.108

0.037

     Combined (DE = 46.97%; df = 15)

0.345

0.095

0.003

0.200

0.138

0.172

Abundance vs. temperature

     Indigenous (DE = 22.87%; df = 15)

0.059

0.029

0.067

−0.028

0.021

0.212

     Invasive (DE = 76.40%; df = 15)

0.465

0.074

<0.001

−0.068

0.054

0.231

     Combined (DE = 49.52%; df = 15)

0.075

0.021

0.003

−0.004

0.016

0.778

  1. Models including single and squared term predictor variables are shown. Deviance explained (DE) values are shown for models with single term predictor variables. s.e. = standard error.