Table 1. Coefficients (mean, standard deviation, and 2.5th and 97.5th percentiles) of the variables included in the regression models of call frequency as a function of traffic noise, expressed as L_{10} 18 hr dB(A) SPL, and temperature expressed as degrees Centigrade. Coefficients are shown for the models of the dominant frequency of the call of Litoria ewingii and the lower frequency of the call of Crinia signifera.


Litoria ewingii 
Crinia signifera 
Variable 
Mean 
SD 
2.5% 
97.5% 
Mean 
SD 
2.5% 
97.5% 

Constant 
2489 
19.1 
2452 
2527 
2835 
34.2 
2766 
2901 
Traffic noise 
4.15 
2.76 
1.24 
9.60 
1.50 
3.68 
5.76 
8.77 
Temperature 
21.5 
5.49 
10.8 
32.4 
10.3 
8.22 
6.16 
26.2 


