. 2017 Aug 30;12(8):e0183342. doi: 10.1371/journal.pone.0183342

Table 1. Effects of traffic noise playback stimuli on call parameters of the focal species.

Measurements of each parameter are given by means and (standard error); Dominant frequency is given in Hz. Letters “a” and “b” and numbers in bold indicate significant differences between groups.

	Time	Treatment	Aggressive call	Advertisement call
			Call rate (call/min)	Call rate (call/min)	Call length (seconds)	Note length (seconds)	Interval (seconds)	Dominant frequency
Boana bischoffi	1	Silence	0.9 (0.4)	5.9 (1.3)^a	0.07 (0.02)	0.05 (0.006)	_	1685 (66)^a
	2	65 dB	0.5 (0.2)	4.2 (1.3)^b	0.05 (0.005)	0.05 (0.006)	_	1694 (31)
	3	75 dB	0.9 (0.3)	5.2 (1.4)^b	0.09 (0.02)	0.05 (0.007)	_	1672 (45)
	4	Silence	1.2 (0.4)	7.4 (1.6)^a	0.11 (0.03)	0.05 (0.007)	_	1676 (27)^b
	1	Silence	1.0 (0.4)	9.6 (1.7)^a	0.10 (0.02)	0.06 (0.004)	_	1769 (36)^a
	2	75 dB	0.5 (0.3)	2.9 (1.6)^b	0.16 (0.05)	0.06 (0.005)	_	1746 (47)
	3	65 dB	0.7 (0.4)	4.8 (1.4)^b	0.11 (0.03)	0.06 (0.005)	_	1706 (25)
	4	Silence	1.5 (0.8)	6.6 (2.6)^a	0.14 (0.04)	0.06 (0.004)	_	1685 (15)^b
Boana leptolineata	1	Silence	0.9 (0.3)	16.2 (4.4)	0.18 (0.02)	0.06 (0.005)	0.08 (0.005)	4222 (54)
	2	65 dB	1.2 (0.3)	18.3 (4.5)	0.20 (0.02)	0.06 (0.004)	0.08 (0.005)	4240 (49)
	3	75 dB	1.4 (0.4)	15.8 (4.2)	0.22 (0.02)	0.06 (0.004)	0.08 (0.005)	4196 (50)
	4	Silence	1.5 (0.5)	15.5 (4.4)	0.22 (0.01)^*a	0.06 (0.005)	0.09 (0.005)	4186 (48)
	1	Silence	2.4 (0.7)	13.8 (3.5)	0.19 (0.02)	0.07 (0.007)	0.09 (0.02)	4150 (51)
	2	75 dB	1.8 (0.6)	11.7 (5.1)	0.18 (0.02)	0.07 (0.007)	0.08 (0.009)	4207 (60)
	3	65 dB	1.4 (0.7)	12.6 (4.8)	0.18 (0.02)	0.08 (0.1)	0.08 (0.01)	4198 (46)
	4	Silence	1.1 (0.7)	10.7 (5.3)	0.19 (0.03)^*b	0.07 (0.004)	0.09 (0.01)	4182 (63)