Browsing by Author "Kvadsheim, Petter Helgevold"
Now showing items 21-35 of 35
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Modeling Effectiveness of Gradual Increases in Source Level to Mitigate Effects of Sonar on Marine Mammals
Benda-Beckmann, Alexander M. von; Wensveen, Paul; Kvadsheim, Petter Helgevold; Lam, Frans-Peter A.; Miller, Patrick J.O.; Tyack, PL; Ainslie, Michael (2013) -
Modeling potential masking of echolocating sperm whales exposed to continuous 1-2 kHz naval sonar
von Benda-Beckmann, Alexander M.; Isojunno, Saana; Zandvliet, Maik; Ainslie, Michael A.; Wensveen, Paulus Jacobus; Tyack, Peter L.; Kvadsheim, Petter Helgevold; Lam, Frans-Peter A.; Miller, Patrick James O. (2021-04-30)Modern active sonar systems can (almost) continuously transmit and receive sound, which can lead to more masking of important sounds for marine mammals than conventional pulsed sonar systems transmitting at a much lower ... -
Naval sonar disrupts foraging in humpback whales
Sivle, Lise Doksæter; Wensveen, Paul Jacobus; Kvadsheim, Petter Helgevold; Lam, Frans-Peter Alexander; Visser, Fleur; Curé, Charlotte; Harris, Catriona M.; Tyack, Peter Lloyd; Miller, Patrick James O'Malley (2016)Modern long-range naval sonars are a potential disturbance for marine mammals and can cause disruption of feeding in cetaceans. We examined the lunge-feeding behaviour of humpback whales Megaptera novaeangliae before, ... -
Northern bottlenose whales in a pristine environment respond strongly to close and distant navy sonar signals
Wensveen, Paul J.; Isojunno, Saana; Hansen, Rune Roland; von Benda-Beckmann, Alexander M.; Kleivane, Lars; van IJsselmuide, Sander; Lam, Frans-Peter Alexander; Kvadsheim, Petter Helgevold; DeRuiter, Stacy L.; Curé, Charlotte; Narazaki, Tomoko; Tyack, Peter Lloyd; Miller, Patrick James O'Malley (2019-03-20)Impact assessments for sonar operations typically use received sound levels to predict behavioural disturbance in marine mammals. However, there are indications that cetaceans may learn to associate exposures from distant ... -
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 ... -
Predator sound playbacks reveal strong avoidance responses in a fight strategist baleen whale
Curé, Charlotte; Sivle, Lise Doksæter; Visser, Fleur; Wensveen, Paul J.; Isojunno, Saana; Harris, Catriona M.; Kvadsheim, Petter Helgevold; Lam, Frans-Peter A.; Miller, Patrick James O'Malley (2015)Anti-predator strategies are often defined as ‘flight’ or ‘fight’, based upon prey anatomical adaptations for size, morphology and weapons, as well as observed behaviours in the presence of predators. The humpback whale ... -
Predicting acoustic dose associated with marine mammal behavioural responses to sound as detected with fixed acoustic recorders and satellite tags
von Benda-Beckmann, Alexander M.; Wensveen, Paul Jacobus; Prior, Mark; Ainslie, Michael; Hansen, Rune Roland; Isojunno, Saana; Lam, Frans-Peter Alexander; Kvadsheim, Petter Helgevold; Miller, Patrick James O'Malley (2019-03-08)To understand the consequences of underwater noise exposure for cetaceans, there is a need for assessments of behavioural responses over increased spatial and temporal scales. Bottom-moored acoustic recorders and satellite ... -
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 ... -
Severity Scoring of Behavioral Responses of Sperm Whales (Physeter macrocephalus) to Novel Continuous versus Conven tional Pulsed Active Sonar
Curé, Charlotte; Isojunno, Saana; Siemensma, Marije; Wensveen, Paul; Buisson, celia; Sivle, Lise Doksæter; Benti, Benjamin; Roland, Rune; Kvadsheim, Petter Helgevold; Lam, Frans-Peter A.; Miller, Patrick James O. (2021-04-19)Controlled exposure experiments (CEEs) have demonstrated that naval pulsed active sonar (PAS) can induce costly behavioral responses in cetaceans similar to antipredator responses. New generation continuous active sonars ... -
The social context of individual foraging behaviour in long-finned pilot whales (Globicephala melas)
Visser, Fleur; Miller, Patrick J.O.; Antunes, Ricardo; Oudejans, Machiel G; Mackenzie, M.L.; Aoki, K.; Lam, Frans-Peter A.; Kvadsheim, Petter Helgevold; Huisman, J; Tyack, Peter L. (2014)Long-finned pilot whales (Globicephala melas) are highly social cetaceans that live in matrilineal groups and acquire their prey during deep foraging dives. We tagged individual pilot whales to record their diving behaviour. ... -
Spawning Atlantic cod (Gadus morhua L.) exposed to noise from seismic airguns do not abandon their spawning site
McQueen, Kate; Meager, Justin James; Nyqvist, Daniel; Skjæraasen, Jon Egil; Olsen, Esben Moland; Karlsen, Ørjan; Kvadsheim, Petter Helgevold; Handegard, Nils Olav; Sivle, Lise Doksæter; Forland, Tonje Nesse (2022-11-15)Seismic airgun surveys may disturb and displace fish at large ranges. If such displacement causes fish to abandon spawning grounds, reproductive success could be impacted. To investigate whether airgun sound causes cod ... -
Sperm whales reduce foraging effort during exposure to 1-2 kH z sonar and killer whale sounds
Isojunno, Saana; Curé, Charlotte; Kvadsheim, Petter Helgevold; Lam, Frans-Peter Alexander; Tyack, Peter Lloyd; Wensveen, Paul Jacobus; Miller, Patrick James O'Malley (2016)The time and energetic costs of behavioral responses to incidental and experimental sonar exposures, as well as control stimuli, were quantified using hidden state analysis of time series of acoustic and movement data ... -
Superb Winter fur insulation in small Siberian musk deer (Moschus moschiferus)
Blix, Arnoldus S; Kvadsheim, Petter Helgevold; Kholodova, Marina V.; Sokolov, Vladimir E.; Messelt, Edward B.; Tyler, N. J. C. (2015)We compared the morphology and thermal characteristics of winter pelage from two Siberian musk deer Moschus moschiferus (aged 5 and 41 mo.; 5.7 and 9.5 kg) and two Eurasian reindeer Rangifer tarandus tarandus (aged >48 ... -
Vocal matching of naval sonar signals by long-finned pilot whales (Globicephala melas)
Alves, Ana; Antunes, Ricardo; Bird, Anna; Tyack, Peter L.; Miller, Patrick James O'Malley; Lam, Frans-Peter A.; Kvadsheim, Petter Helgevold (2014) -
When the noise goes on: received sound energy predicts sperm whale responses to both intermittent and continuous navy sonar
Isojunno, Saana; Wensveen, Paul Jacobus; Lam, Frans-Peter Alexander; Kvadsheim, Petter Helgevold; Benda-Beckmann, Alexander M. von; Lòpez, Lucia; Kleivane, Lars; Siegall, Elidh; Miller, Patrick James O'Malley (2020-04-08)Anthropogenic noise sources range from intermittent to continuous, with seismic and navy sonar technology moving towards near-continuous transmissions. Continuous active sonar (CAS) may be used at a lower amplitude than ...