Browsing by Author "Alves, Ana Catarina"

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    • Cetaceans and naval sonar : the 3S-2009 cruise report 

      Kvadsheim, Petter H.; Lam, Frans-Peter; Miller, Patrick; Kleivane, Lars; Alves, Ana Catarina; Antunes, Ricardo; Bocconcelli, Alex; van IJsselmuide, Sander; Olivierse, Marijke; Visser, Fleur (2009)
      Forsvaret har utrykt behov for å få kartlagt sjøpattedyrs følsomhet overfor sonarsignaler, også atferdsmessige påvirkninger. 3S-konsortiet, som for tiden består av fire partnere, FFI, Woods Hole Oceanographic Institution ...

    • Dose-response relationships for the onset of avoidance of sonar by free-ranging killer whales 

      Miller, Patrick J.O.; Antunes, Ricardo; Wensveen, Paul; Samarra, Filipa I. P.; Alves, Ana Catarina; Tyack, Peter L.; Kvadsheim, Petter Helgevold; Kleivane, Lars; Lam, Frans-Peter A.; Ainslie, Michael A; Thomas, Len (2014)
      Eight experimentally controlled exposures to 1−2 kHz or 6−7 kHz sonar signals were conducted with four killer whale groups. The source level and proximity of the source were increased during each exposure in order to reveal ...

    • Pilot Whales Attracted to Killer Whale Sounds: Acoustically-Mediated Interspecific Interactions in Cetaceans 

      Curé, Charlotte; Antunes, Ricardo; Samarra, Filipa; Alves, Ana Catarina; Visser, Fleur; Kvadsheim, Petter Helgevold; Miller, Patrick J.O. (2012)
      In cetaceans’ communities, interactions between individuals of different species are often observed in the wild. Yet, due to methodological and technical challenges very little is known about the mediation of these ...

    • Responses of male sperm whales (Physeter macrocephalus) to killer whale sounds: implications for anti-predator strategies 

      Curé, Charlotte; Antunes, Ricardo; Alves, Ana Catarina; Visser, Fleur; Kvadsheim, Petter Helgevold; Miller, Patrick J.O. (2013)
      Interactions between individuals of different cetacean species are often observed in the wild. Killer whales (Orcinus orca) can be potential predators of many other cetaceans, and the interception of their vocalizations ...