Table 1. Signal parameters of type 1 and type 2 echolocation calls.

call type		type 1	type 2	t	p	significance level
		N = 24 (n = 86)	N = 23 (n = 110)
duration [ms]	mean (± SD)	1.7 (± 0.4)	2.5 (± 0.4)	7.10	< 0.0001	***
	range	1.1–2.4	1.8–3.1
		N = 9 (n = 19)	N = 7 (n = 43)
pulse interval [ms] to preceeding call	mean (± SD)	67.9 (± 12.8)	59.3 (± 11.4)
	range	49.0–92.1	42.3–92.0
		N = 24 (n = 86)	N = 23 (n = 110)
start freq [kHz]	mean (± SD)	35.9 (± 1.3)	44.3 (± 0.9)	25.89	< 0.0001	***
	range	33.4–38.0	42.4–46.2
		N = 24 (n = 86)	N = 23 (n = 110)
terminal freq [kHz]	mean (± SD)	31.2 (± 0.8)	35.1 (± 1.9)	9.19	< 0.0001	***
	range	29.6–32.5	31.0–38.4
		N = 24 (n = 86)	N = 23 (n = 110)
bandwidth [kHz]	mean (± SD)	4.7 (± 1.0)	9.2 (± 1.9)	10.37	< 0.0001	***
	range	3.2–6.4	6.5–12.9
		N = 24 (n = 86)	N = 23 (n = 110)
peak freq [kHz]	mean (± SD)	33.6 (± 1.1)	40.1 (± 1.2)	18.99	< 0.0001	***
	range	31.7–36.3	37.5–41.7
		N = 24 (n = 86)	N = 23 (n = 110)
apparent source level [dB]	mean (± SD)	79.9 (± 5.1)	82.4 (± 3.6)	1.90	= 0.0642	n.s.
	range	70.0–90.0	76.4–88.1
		N = 8 (n = 14)	N = 7 (n = 11)
source level [dB]	mean (± SD)	80.9 (± 7.5)	82.0 (± 4.1)	0.37	= 0.7206	n.s.
	range	70.0–90.2	77.1–87.8

Parameters of echolocation signals in Barbastella barbastellus emitted when flying towards the microphone array. For each sequence only the mean of the parameters was used so as to avoid pseudoreplication. N = number of recorded sequences, n = number of signals contained in the sequences used to calculate the corresponding mean.