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Classification of behavior using vocalizations of Pacific white-sided dolphins (Lagenorhynchus obliquidens)a)
a)Portions of this work were presented in “Behavior and vocalizations of Pacific white-sided dolphins (Lagenorhynchus obliquidens),” 46th Annual Meeting of the Animal Behavior Society, 2009, and “Cetaceans in the Southern California Bight: Behavioral, Acoustical and Spatio-temporal Modeling”, PhD dissertation.
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10.1121/1.3592213
/content/asa/journal/jasa/130/1/10.1121/1.3592213
http://aip.metastore.ingenta.com/content/asa/journal/jasa/130/1/10.1121/1.3592213

Figures

Image of FIG. 1.
FIG. 1.

Bathymetric map of Southern California Bight, with an inset of San Clemente Island. The shapes indicate the locations of FLIP moorings in 2006, 2007, and 2008. The dark line is the boundary of the SCORE range.

Image of FIG. 2.
FIG. 2.

Spectrogram of pulsed call series. Time in seconds is on the x axis, frequency in kHz is on the y axis, and intensity of the signal is indicated by the color bar. The minimum frequency, maximum frequency, and bandwidth of one pulsed call are indicated. Clicks are also visible in the spectrogram.

Image of FIG. 3.
FIG. 3.

Spectrogram of click trains. Time in seconds is on the x axis, frequency in kHz is on the y axis, and intensity of the signal is indicated by the color bar. Two click trains, presumed to be produced by individuals based on the spatial characteristics of the clicks and ICIs, are highlighted.

Image of FIG. 4.
FIG. 4.

Median group size for each behavior. Bars show median group size for all groups in black, click Type A groups in dark gray, and click Type B groups in white, with error bars of standard error.

Image of FIG. 5.
FIG. 5.

Summary of behavioral data. Bars show the percent of time animals were observed at each behavior, with all groups in black, click Type B groups in gray, and click Type A groups in white, with error bars of standard error.

Image of FIG. 6.
FIG. 6.

Boxplots and rank confidence intervals for the median number of clicks per 30-s interval. (a) The boxplots of the median number of clicks per 30-s interval for each behavioral category. (b) The rank calculated in the Kruskal-Wallis analysis and confidence interval (the line around the point) of each behavior for the median number of clicks per 30-s interval. The rank is determined by ordering the data from smallest to largest, then taking the numerical index of the resulting order.

Tables

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TABLE I.

Definitions of click and pulsed call types.

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TABLE II.

Summary of effort and number of Pacific white-sided dolphin groups sighted for all surveys.

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TABLE III.

Sample size for behavioral and acoustic analyses. Values are the number of 30-second segments, based on focal follow observation samples, for each behavior and for each click type group.

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TABLE IV.

Median values for group size, call counts, and inter-click intervals during 30-second periods for each behavioral category.

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TABLE V.

Percent correct classification of surface behavior based on call features for random forest models with group size included as a predictor variable.

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TABLE VI.

Percent correct classification of surface behavior based on call features for random forest models with group size excluded as a predictor variable.

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/content/asa/journal/jasa/130/1/10.1121/1.3592213
2011-07-19
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Classification of behavior using vocalizations of Pacific white-sided dolphins (Lagenorhynchus obliquidens)a)
http://aip.metastore.ingenta.com/content/asa/journal/jasa/130/1/10.1121/1.3592213
10.1121/1.3592213
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