Passive acoustic measurement of dive vocal behavior and group size of Blainville's beaked whale (Mesoplodon densirostris) in the tongue of the ocean (TOTO)

Auteurs-es

  • Nancy DiMarzio Naval Undersea Warfare Center Division, Newport, RI, United States
  • David Moretti Naval Undersea Warfare Center Division, Newport, RI, United States
  • Jessica Ward Naval Undersea Warfare Center Division, Newport, RI, United States
  • Ronald Morrissey Naval Undersea Warfare Center Division, Newport, RI, United States
  • Susan Jarvis Naval Undersea Warfare Center Division, Newport, RI, United States
  • Anna Maria Izzi Naval Undersea Warfare Center Division, Newport, RI, United States
  • Mark Johnson Naval Undersea Warfare Center Division, Newport, RI, United States
  • Peter Tyack Naval Undersea Warfare Center Division, Newport, RI, United States
  • Amanda Hansen Naval Undersea Warfare Center Division, Newport, RI, United States

Résumé

Le comportement vocal de la baleine à bec de Blainville (Mesoplodon densirostris) a été mesuré à l’aide d’hydrophones installés sur le fond marin, au Centre d’évaluation et de tests sous-marins de l’Atlantique (AUTEC, de l’anglais Atlantic Undersea Test and Evaluation Center) des Bahamas. Les statistiques relatives à la durée des signaux acoustiques et les périodes qui s’écoulent entre les périodes de « chant » ont été mesurées pour des plongées multiples en profondeur (en comportement de recherche de nourriture). La taille des groupes de M. densirostris en recherche de nourriture ont été estimés d’après la durée des périodes de chant en plongée, en appliquant le taux de « clics » et des statistiques sur le rapport de détection dérivés des enregistrements numériques du DTags de la WHOI (Woods Hole Oceanographic Institution), afin de visualiser les données recueillies au centre AUTEC.

Fichiers supplémentaires

Publié-e

2008-03-01

Comment citer

1.
DiMarzio N, Moretti D, Ward J, Morrissey R, Jarvis S, Izzi AM, Johnson M, Tyack P, Hansen A. Passive acoustic measurement of dive vocal behavior and group size of Blainville’s beaked whale (Mesoplodon densirostris) in the tongue of the ocean (TOTO). Canadian Acoustics [Internet]. 1 mars 2008 [cité 16 févr. 2025];36(1):166-72. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2007

Numéro

Vol. 36 No. 1 (2008)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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