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Table 2 Definitions of call variables measured for each Hyla leucophyllata call.

From: Multi-character perspectives on the evolution of intraspecific differentiation in a neotropical hylid frog

Variable

Description

Prim. Dom. Frequency

Frequency containing the most energy over the length of the primary note

Prim. FM Range

Dominant frequency difference between the beginning and end of the primary note

Prim. FM Sweep

Primary FM range divided by the primary note length

Sec. Dom. Frequency

Frequency containing the most energy over the length of the first secondary note

Sec. FM Range

Dominant frequency difference between the beginning and end of the first secondary note

Sec. FM Sweep

Secondary FM range divided by the first secondary note length

Call Length

Total length of call including all secondary notes

Inter-note Interval

Time between the end of the primary note and beginning of the first secondary note

Prim. Note Length

Length of primary note

Prim. Note & Inter-Note Inter.

Length of primary note plus the inter-note interval

Prim. Note Rise

Time from the beginning of the primary note until the maximum amplitude of the primary note is reached

Prim. Note Shape

Primary note rise time divided by primary note length

Number of Prim. Pulses

Number of pulses contained in the primary note

Prim. Pulse Length

Length of first clearly discernible pulse of the primary note

Prim. Pulse + Inter-pulse Inter.

Primary pulse length plus the time to the onset of the next pulse

Prim. Pulse Rise

Time from the beginning of first clearly discernible pulse of the primary note to that pulse's maximum amplitude

Prim. Pulse Shape

Primary pulse rise time divided by primary pulse length

Prim. Pulse Duty

Primary pulse length divided by primary pulse +inter-pulse interval

Prim. Pulse Rate

Number of primary pulses divided by the primary note length

Sec. Note Length

Length of first secondary note

Sec. Note Rise

Time from the beginning of the first secondary note until the maximum amplitude of the first secondary note is reached

Sec. Note Shape

Secondary note rise time divided by secondary note length

Number of Sec. Notes

Number of notes following the primary note

Number of Sec. Pulses

Number of pulses contained in the first secondary note

Sec. Pulse Length

Length of first clearly discernible pulse of the first secondary note

Sec. Pulse + Inter-pulse Inter.

Secondary pulse length plus the time to the onset of the next pulse

Sec. Pulse Rise

Time from the beginning of first clearly discernible pulse of the secondary note to that pulse's maximum amplitude

Sec. Pulse Shape

Secondary pulse rise time divided by secondary pulse length

Sec. Pulse Duty

Secondary pulse length divided by secondary pulse +inter-pulse interval

Sec. Pulse Rate

Number of secondary pulses divided by the secondary note length