425
Fig. 15.15 Combination of spectrograms, a sound graphic with x-axis on time (seconds) and
y-axis on frequency (kiloHertz), exemplifying some of the different humpback whale (Megaptera
novaeangliae) notes with its remarkable mean central frequency around 500  Hz (indicated by
black circles) Blue line graphs above represent the respective oscilograms or waveforms, sound
graphics with x-axis on time (seconds) and y-axis on pressure (ku)
Table 15.4 Humpback whale (Megaptera novaeangliae) song characteristics from the northeastern
Brazil (Abrolhos Bank), between 2005 and 2008, showing recording information –file identification
and day-, file duration (minutes:seconds), total number of notes, different note types, number of
themes and number of singers registered in each recording file
Song#
Day
Duration (m:s) Total notes Note types N themes
N singers
ABL 2005
26 July 05 12:20
160
14
8
>3
ABL2006a
11:20
200
16
10
2
ABL2006b
24:12
290
21
8
2
ABL2007a 10 July 07 20:00
151
39
12
1
ABL2007b
16:25
220
40
15
3
ABL2008
21 Oct 08
56:14
188
24
7
1
Table 15.5 Humpback whale (Megaptera novaeangliae) song characteristics from the northeastern
Brazil (North Coast), between 2005 and 2010, showing recording information –file identification
and day-, file duration (minutes:seconds), total number of notes, different note types, number of
themes and number of singers registered in each recording file
Song #
Day
Duration (m:s) Total notes Note types N themes N singers
ITA2005
20Ago05 50:00
212
17
8
2
F_ITA2006 06Ago06 35:00
131
21
8
1
FtVD-2008
20:00
78
14
6
1
ITA2009
04Ago09 35:00
101
12
6
2
PF2009
18Ago09 35:00
180
15
7
2
PF2010
Ago10
30:00
85
10
6
1
15 The Spreading Message in a Noisy World: Song Behavior and Acoustic Ecology…