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Spatio-Temporal Patterns of Beaked Whale Echolocation Signals in the North Pacific

Figure 3

Relative daily occurrence of FM pulse types by site (pie chart, see Table 2).

For each pie chart, the relative detection effort (number of days recorded) is displayed on the left, and the relative presence on the right. Site M in the Southern California Bight had the highest effort (relative effort of 1) and Kingman Reef had the highest percentage of days with acoustic encounters (relative presence of 1). A dark line through the relative effort is indicative of duty cycle and reflects the amount of continuous effort.

Figure 3

doi: https://doi.org/10.1371/journal.pone.0086072.g003