Skip to main content

Table 4 Conditional probabilities of road-killed common toads and green toads for all land cover classes [P(E|B)]

From: Amphibian and reptile road-kills on tertiary roads in relation to landscape structure: using a citizen science approach with open-access land cover data

CLC code

Land cover class

H(E)

H(E1)

H(E)+ H(E1)

P(E∩B)

P(B)

P(E|B)

324

Transitional woodland shrub

0.088

0.000

0.088

0.000

0.000

0.998

142

Sport and leisure facilities

0.296

0.023

0.319

0.002

0.002

0.924

243

Land principally occupied by agriculture, with significant areas of natural vegetation

3.181

2.081

5.262

0.016

0.027

0.606

311

Broad-leaved forest

2.147

2.998

5.145

0.011

0.026

0.416

211

Non-irrigated arable land

23.681

34.538

58.220

0.121

0.299

0.406

112

Discontinuous urban fabric

16.534

24.576

41.110

0.085

0.210

0.404

411

Inland marshes

0.088

0.180

0.269

0.000

0.001

0.327

312

Coniferous forest

0.862

1.831

2.694

0.004

0.014

0.319

221

Vineyards

20.752

47.589

68.340

0.106

0.351

0.303

111

Continuous urban fabric

0.334

0.854

1.188

0.002

0.006

0.281

242

Complex cultivation patterns

1.742

4.950

6.692

0.009

0.034

0.262

313

Mixed forest

0.138

2.094

2.232

0.001

0.011

0.063

231

Pastures

0.157

2.734

2.891

0.001

0.015

0.054

121

Industrial or commercial units

0.000

0.552

0.552

0.000

0.003

0.000

  1. Proportion of each land cover class per section containing road-killed toads [H(E)] or not [H(E1)]. The probability of a road-killed toad on a certain land cover class [P(E∩B)] divided by the overall availability of this land cover class in the study area [P(B)] results in the conditional probability P(E|B). Land cover classes in descending order of P(E|B); the higher the P(E|B), the higher the probability of a road-kill on the specific land cover class