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Table 1 Overview of minimal linear mixed effects models

From: Light pollution affects space use and interaction of two small mammal species irrespective of personality

Dependent variable

Transformation

N

Marginal R2

Conditional R2

Fixed factor

χ2

P

Estimate

CI [2.5%, 97.5%]

Diurnality

 

30

0.244

0.709

Light

5.06

0.025

0.1120

[0.0113, 0.2128]

    

Species

4.57

0.032

0.2270

[0.0284, 0.4256]

    

Boldness

0.32

0.572

0.0335

[− 0.0773, 0.1443]

Home range (95% kernel)

Log

60

0.273

0.739

Light

0.13

0.721

0.1937

[− 0.1156, 0.5030]

    

Daytime

15.52

< 0.001

− 0.2115

[− 0.5207, 0.0978]

    

Species

0.29

0.592

− 0.1800

[− 0.8076, 0.4477]

    

Boldness

5.13

0.024

− 0.4235

[− 0.7737, − 0.0734]

    

Light * daytime

4.29

0.038

− 0.4682

[− 0.9056, − 0.0308]

Home range overlap

 

240

0.083

0.537

Light

0.38

0.537

0.0210

[− 0.0677, 0.1096]

    

Species combination

3.02

0.083

− 0.0112

[− 0.0938, 0.0697]

    

Daytime

1.06

0.303

0.0268

[− 0.0499, 0.1036]

    

Boldness1

2.94

0.087

0.0604

[− 0.0215, 0.1451]

    

Boldness2

0.03

0.860

− 0.0205

[− 0.1256, 0.0862]

    

Light *  species comb.

5.17

0.023

0.1297

[0.0189, 0.2404]

    

Light * daytime

3.95

0.047

− 0.1111

[− 0.2197, − 0.0026]

    

Boldness1 *  boldness2

4.53

0.033

0.0452

[0.0042, 0.0869]

Proximity (7 m)

Log

120

0.156

0.571

Light

2.32

0.128

− 0.1548

[− 0.7809, 0.4713]

    

Species combination

1.11

0.292

− 0.2608

[− 1.1874, 0.6127]

    

Daytime

0.08

0.780

− 0.0700

[− 0.5550, 0.4150]

    

Boldness1

0.03

0.877

− 0.1689

[− 0.7521, 0.6094]

    

Boldness2

3.23

0.072

0.6026

[− 0.1571, 1.4959]

    

Light *  species comb.

6.88

0.009

1.3411

[0.3512, 2.3310]

    

Boldness1 *  boldness2

4.86

0.027

0.4396

[0.0625, 0.8297]

Activity synchrony

 

60

0.140

0.612

Light

2.61

0.106

− 0.0378

[− 0.0877, 0.0122]

    

Species combination

0.06

0.804

− 0.0800

[− 0.1484, − 0.0112]

    

Light *  species comb.

18.61

< 0.001

0.1745

[0.0956, 0.2534]

  1. Experimental populations of bank voles and striped field mice living under natural night conditions and under artificial light at night (ALAN) afterwards. Explained deviance of fixed factors (marginal R2), explained deviance of fixed factors and random effects (conditional R2) and results of Wald χ2 tests for the variables of the minimal linear mixed models are shown. Estimates and 95% confidence intervals (CI) are presented. The fixed factor light indicates the effect of a change of natural light conditions to ALAN, species the effect of bank voles compared to striped field mice, daytime the effects of daylight and nighttime, boldness the effect of the boldness score of the animals (boldness1 and boldness2 specify the boldness score of the two animals in a dyad), species combination the effect of dyads were animals are conspecifics compared to those were animals are heterospecifics. LMMs for diurnality and home range included the animal ID nested in the experimental population as a random effect. LMMs for home range overlap and proximity contained the animal ID of the focal animal and its respective opponent as well as the experimental population. Significant P values are displayed in italic
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BMC Ecology

ISSN: 1472-6785

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