Ecological Archives A017-012-A1

Mathieu Denoël and G. Francesco Ficetola. 2007. Landscape-level thresholds and newt conservation. Ecological Applications 17:302–309.

Appendix A. Significance of ecological thresholds in newt species, evaluated after removing from the data set ponds with fish.

Occurrence

Breaking point

Piecewise regression

 

supF (n = 10)

P

F 7,1

P

Distance to forest

T. alpestris

17.840

0.0019

6.206

0.042

T. helveticus

87.121

< 0.0001

65.216

<0.0001

T. vulgaris

5.051

0.374

4.251

0.071

Forest percentage

T. alpestris

14.519

0.008

0.350

0.573

T. helveticus

23.672

0.0001

21.358

0.002

T. vulgaris

11.709

0.027

< 0.001

0.996

Crop percentage

T. alpestris

1.111

0.999

1.257

0.299

T. helveticus

33.058

< 0.0001

23.708

0.002

T. vulgaris

1.047

0.999

0.095

0.767



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