Searched for: author:"Lam, F.P.A."
(1 - 20 of 59)

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von Benda-Beckman, A.M. (author), Isojunno, S. (author), Zandvliet, M. (author), Ainlsie, M. (author), Wensveen, P.J. (author), Tyack, P.L. (author), Kvadsheim, P.H. (author), Lam, F.P.A. (author), Miller, P.J.O. (author)
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 duty cycle. This study investigated the potential of 1–2 kHz active sonar to mask echolocation-based foraging of sperm whales...
article 2021
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Kastelein, R.A. (author), Helder-Hoek, L. (author), Cornelisse, S.A. (author), von Benda-Beckmann, A.M. (author), Lam, F.P.A. (author), de Jong, C.A.F. (author), Ketten, D.R. (author)
Noise-induced temporary hearing threshold shift (TTS) was studied in a harbor porpoise exposed to impulsive sounds of scaled-down airguns while both stationary and free-swimming for up to 90 min. In a previous study, ∼4 dB TTS was elicited in this porpoise, but despite 8 dB higher single-shot and cumulative exposure levels (up to 199 dB re 1...
article 2020
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Isojunno, S. (author), Wensveen, P.J. (author), Lam, F.P.A. (author), Kvadsheim, P.H. (author), von Benda-Beckmann, A.M. (author), Lopez, L.M. Martín (author), Kleivane, L. (author), Siegal, E.M. (author), Miller, P.J.O. (author)
Anthropogenic noise sources range from intermittent to continuous, with seismic and navy sonar technology moving towards nearcontinuous transmissions. Continuous active sonar (CAS) may be used at a lower amplitude than traditional pulsed active sonar (PAS), but potentially with greater cumulative sound energy. We conducted at-sea experiments to...
article 2020
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Lam, F.P.A. (author)
Wereldwijd is al behoorlijk wat onderzoek gedaan naar de gevoeligheid van walvisachtigen en andere zeezoogdieren voor pulsgeluiden van sonar of seismisch onderzoek. Die kennis is maar zeer ten dele in onze Noordzee toe te passen. Onderzoek naar effecten van geluid van schepen en andere kunstmatige bronnen op vissen is al veel schaarser en nóg...
bookPart 2019
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von Benda-Beckmann, A.M. (author), Wensveen, P.J. (author), Prior, M. (author), Ainslie, M.A. (author), Hansen, R.R. (author), Isojunno, S. (author), Lam, F.P.A. (author), Kvadsheim, P.H. (author), Miller, P.J.O. (author)
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 tags provide such long-term and large spatial coverage of behaviour compared to short-duration acoustic-recording tags....
article 2019
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Wensveen, P.J. (author), Isojunno, S. (author), Hansen, R.R. (author), von Benda-Beckmann, A.M. (author), Kleivane, L. (author), van IJsselmuide, S. (author), Lam, F.P.A. (author), Kvadsheim, P.H. (author), DeRuiter, S.L. (author), Curé, C. (author), Narazaki, T. (author), Tyack, P.L. (author), Miller, P.J.O. (author)
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 sound sources with lower perceived risk. To investigate the roles of source distance and received level in an area without...
article 2019
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Harris, C.M. (author), Thomas, L. (author), Falcone, E.A. (author), Hildebrand, J. (author), Houser, D. (author), Kvadsheim, P.H. (author), Lam, F.P.A. (author), Miller, P.J.O. (author), Moretti, D.J. (author), Read, A.J. (author), Slabbekoorn, H. (author), Southall, B.L. (author), Tyack, P.L. (author), Wartzok, D. (author), Janik, V.M. (author)
Marine mammals may be negatively affected by anthropogenic noise. Behavioural response studies (BRS) aim to establish a relationship between noise exposure conditions (dose) from a potential stressor and associated behavioural responses of animals. A recent series of BRS have focused on the effects of naval sonar sounds on cetaceans. Here, we...
article 2018
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Kvadsheim, P.H. (author), DeRuiter, S. (author), Sivle, L.D. (author), Goldbogen, J. (author), Hansen, R.R. (author), Miller, P. (author), Lam, F.P.A. (author), Calambokidis, J. (author), Friedlaender, A. (author), Tyack, P. (author), Kleivane, L. (author), Southall, B. (author)
Minke whales are difficult to study and little information exists regarding their responses to anthropogenic sound. This study pools data from behavioural response studies off California and Norway. Data are derived from four tagged animals, of which one from each location was exposed to naval sonar signals. Statistical analyses were conducted...
article 2017
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Wensveen, P.J. (author), Kvadsheim, P.H. (author), Lam, F.P.A. (author), von Benda-Beckmann, A.M. (author), Sivle, L.D. (author), Visser, F. (author), Cure, C. (author), Tyack, P.L. (author), Miller, P.J.O. (author)
Exposure to underwater sound can cause permanent hearing loss and other physiological effects in marine animals. To reduce this risk, naval sonars are sometimes gradually increased in intensity at the start of transmission ('ramp-up'). Here, we conducted experiments in which tagged humpback whales were approached with a ship to test whether a...
article 2017
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Kastelein, R.A. (author), Helder-Hoek, L. (author), van de Voorde, S. (author), von Von Benda-Beckmann, A.M. (author), Lam, F.P.A. (author), Jansen, E. (author), de Jong, C.A.F. (author), Ainslie, M.A. (author)
In seismic surveys, reflected sounds from airguns are used under water to detect gas and oil below the sea floor. The airguns produce broadband high-amplitude impulsive sounds, which may cause temporary or permanent threshold shifts (TTS or PTS) in cetaceans. The magnitude of the threshold shifts and the hearing frequencies at which they occur...
article 2017
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von Benda-Beckmann, A.M. (author), Wensveen, P.J. (author), Kvadsheim, P.H. (author), Lam, F.P.A. (author), Miller, P.J.O. (author), Tyack, P.L. (author), Ainslie, M.A. (author)
Ramp-up procedures are used to mitigate the impact of sound on marine mammals. Sound exposure models combined with observations of marine mammals responding to sound can be used to assess the effectiveness of ramp-up procedures. We found that ramp-up procedures before full-level sonar operations can reduce the risk of hearing threshold shifts...
bookPart 2016
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Dekeling, R. (author), Lam, F.P.A. (author), Helgevold Kvdadsheim, P. (author), Jones, R. (author), Mather, Y. (author), Filipowicz, R. (author), Kitchen, D. (author), Poleshuk, D. (author), Ludwig, S. (author), Hutchins, T. (author)
In recent years atypical stranding of marine life have created a public interest in military sonar use. In order to maintain this essential military capability, there is a need to ensure that active sonar systems are used in an environmentally responsible way when preparing for operational missions. Although there is NATO environmental...
report 2016
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Isojunno, S. (author), Curé, C. (author), Helgevold Kvadsheim, P. (author), Lam, F.P.A. (author), Tyack, P.L. (author), Wensveen, P.J. (author), Miller, P.J.O (author)
Abstract . The time and energetic costs of behavioral responses to incidental and experimental sonar exposures, as well as control stimuli, were quantifi ed using hidden state analysis of time series of acoustic and movement data recorded by tags ( DTAG ) attached to 12 sperm whales ( Physeter macrocephalus ) using suction cups. Behavioral state...
article 2016
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Sivle, L.D. (author), Wensveen, P.J. (author), Kvadsheim, P.H. (author), Lam, F.P.A. (author), Visser, F. (author), Curé, C. (author), Harris, C.M. (author), Tyack, P.L. (author), Miller, P.J.O. (author)
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, during and after controlled exposure experiments with naval sonar by use of acoustic and motion sensor archival tags attached to...
article 2016
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Lucke, K. (author), Scowcroft, G. (author), Winter, H.V. (author), Knowlton, C. (author), Lam, F.P.A. (author), Hawkins, A. (author), Popper, A.N. (author)
conference paper 2016
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Aarts, G. (author), von Benda-Beckmann, A.M. (author), Lucke, K. (author), Özkan Sertlek, H. (author), van Bemmelen, R. (author), Geelhoed, S.C.V. (author), Brasseur, S. (author), Scheidat, M. (author), Lam, F.P.A. (author), Slabbekoorn, H. (author), Kirkwood, R. (author)
Anthropogenic sound in the marine environment can have negative consequences for marine fauna. Since most sound sources are intermittent or continuous, estimating how many individuals are exposed over time remains challenging, as this depends on the animals’ mobility. Here we explored how animal movement influences how many, and how often,...
article 2016
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Visser, F. (author), Curé, C. (author), Kvadsheim, P.H. (author), Lam, F.P.A. (author), Tyack, P.L. (author), Miller, P.J.O. (author)
Social interactions among animals can influence their response to disturbance. We investigated responses of long-finned pilot whales to killer whale sound playbacks and two anthropogenic sources of disturbance: Tagging effort and naval sonar exposure. The acoustic scene and diving behaviour of tagged individuals were recorded along with the...
article 2016
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Wensveen, P.J. (author), von Benda-Beckmann, A.M. (author), Ainslie, M.A. (author), Lam, F.P.A. (author), Kvadsheim, P.H. (author), Tyack, P.L. (author), Miller, P.J.O. (author)
The behaviour of a marine mammal near a noise source can modulate the sound exposure it receives.We demonstrate that two long-finned pilot whales both surfaced in synchrony with consecutive arrivals of multiple sonar pulses. We then assess the effect of surfacing and other behavioural response strategies on the received cumulative sound exposure...
article 2015
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Kvadsheim, P.H. (author), Lam, F.P.A. (author), Miller, P. (author), Sivle, L.D. (author), Wensveen, P.J. (author), Roos, M. (author), Tyack, P.L. (author), Kleivane, L. (author), Visser, F. (author), Cure, C. (author), van IJsselmuide, S.P. (author), Isojunno, S. (author), von Benda-Beckmann, A.M. (author), Nordlund, N. (author), Dekeling, R.P.A. (author)
In order to properly consider how behavioral responses to anthropogenic noise affect marine mammals and establish safety limits for sonar operations, there is a need to establish behavioral impact criteria. In order to achieve this, knowledge about how marine mammals might respond, thresholds and durations of responses as well as the biological...
report 2015
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Harris, C.M. (author), Sadykova, D. (author), DeRuiter, S.L. (author), Tyack, P.L. (author), Miller, P.J.O. (author), Kvadsheim, P.H. (author), Lam, F.P.A. (author), Thomas, L. (author)
Behavioral response studies (BRSs) aim to enhance our understanding of the behavior changes made by animals in response to specific exposure levels of different stimuli, often presented in an increasing dosage. Here, we focus on BRSs that aim to understand behavioral responses of free-ranging whales and dolphins to manmade acoustic signals ...
article 2015
Searched for: author:"Lam, F.P.A."
(1 - 20 of 59)

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