4.5 Article

Estimating acoustic cue rates in bowhead whales, Balaena mysticetus, during their fall migration through the Alaskan Beaufort Sea

期刊

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
卷 149, 期 5, 页码 3611-3625

出版社

ACOUSTICAL SOC AMER AMER INST PHYSICS
DOI: 10.1121/10.0005043

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资金

  1. Shell Exploration and Production Company
  2. Bureau of Ocean Energy Management (BOEM) [M07RG13260, M11PG00033]
  3. National Oceanographic Partnership Program (NOPP) [N00014-08-1-0311]
  4. National Science Foundation (NSF) from the Office of Polar Programs of the NSF [ARC-0856244, ARC-855828]
  5. Living Marine Resources (LMR) ACCURATE project [N3943019C2176]
  6. Center of Statistics and its Applications (CEAUL) - FCT-Fundacao para a Ciencia e a Tecnologia, Portugal [UIDB/00006/2020]
  7. [BOEM: CHAOZ-M09PG00016]
  8. [ARCWEST-M12PG00021]

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The study estimated the mean cue rate of individual bowhead whales during their fall migration in the Beaufort Sea using eight years of passive acoustic data from 2007 to 2014. Various assumptions were used to convert call density into animal cue rates, resulting in up to 351 cue rate estimates. The results showed a median of 1.3 calls per whale per hour and an interquartile range of 0.5-5.4 calls per whale per hour.
Eight years of passive acoustic data (2007-2014) from the Beaufort Sea were used to estimate the mean cue rate (calling rate) of individual bowhead whales (Balaena mysticetus) during their fall migration along the North Slope of Alaska. Calls detected on directional acoustic recorders (DASARs) were triangulated to provide estimates of locations at times of call production, which were then translated into call densities (calls/h/km(2)). Various assumptions were used to convert call density into animal cue rates, including the time for whales to cross the arrays of acoustic recorders, the population size, the fraction of the migration corridor missed by the localizing array system, and the fraction of the seasonal migration missed because recorders were retrieved before the end of the migration. Taking these uncertainties into account in various combinations yielded up to 351 cue rate estimates, which summarize to a median of 1.3 calls/whale/h and an interquartile range of 0.5-5.4 calls/whale/h.

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