title: Effects of duty-cycled passive acoustic recordings on detecting the presence of beaked whales in the northwest Atlantic.
abstract: This study investigated the effects of using duty-cycled passive acoustic recordings to monitor the daily presence of beaked whale species at three locations in the northwest Atlantic. Continuous acoustic records were subsampled to simulate duty cycles of 50%, 25%, and 10% and cycle period durations from 10 to 60 min. Short, frequent listening periods were most effective for assessing the daily presence of beaked whales. Furthermore, subsampling at low duty cycles led to consistently greater underestimation of Mesoplodon species than either Cuvier's beaked whales or northern bottlenose whales, leading to a potential bias in estimation of relative species occurrence.
authors.affiliation: Duke University Marine Laboratory, 135 Duke Marine Lab Road, Beaufort, North Carolina 28516, USA joy.stanistreet@duke.edu, doug.nowacek@duke.edu, aread@duke.edu.
authors.forename: Joy E
authors.initials: JE
authors.lastname: Stanistreet
authors.affiliation: Duke University Marine Laboratory, 135 Duke Marine Lab Road, Beaufort, North Carolina 28516, USA joy.stanistreet@duke.edu, doug.nowacek@duke.edu, aread@duke.edu.
authors.forename: Douglas P
authors.initials: DP
authors.lastname: Nowacek
authors.affiliation: Duke University Marine Laboratory, 135 Duke Marine Lab Road, Beaufort, North Carolina 28516, USA joy.stanistreet@duke.edu, doug.nowacek@duke.edu, aread@duke.edu.
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Read
authors.affiliation: Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA sbaumann@ucsd.edu.
authors.forename: Simone
authors.initials: S
authors.lastname: Baumann-Pickering
authors.affiliation: Bedford Institute of Oceanography, 1 Challenger Drive, Dartmouth, Nova Scotia B2Y 4A2, Canadahilary.moors-murphy@dfo-mpo.gc.ca.
authors.forename: Hilary B
authors.initials: HB
authors.lastname: Moors-Murphy
authors.affiliation: Northeast Fisheries Science Center, 166 Water Street, Woods Hole, Massachusetts 02543, USA sofie.vanparijs@noaa.gov.
authors.forename: Sofie M
authors.initials: SM
authors.lastname: Van Parijs
mesh_terms: D000162:Acoustics; D000818:Animals; D001267:Atlantic Ocean; D011159:Population Surveillance / Q000379:methods; D013997:Time Factors; D014828:Vocalization, Animal; D014907:Whales / Q000502:physiology*