Results 31 to 40 of about 25,335 (235)

Clicking throughout the year: sperm whale clicks in relation to environmental conditions off the west coast of South Africa

Endangered Species Research, 2020
Knowledge of cetacean occurrence and behaviour in southern African waters is limited, and passive acoustic monitoring has the potential to address this gap efficiently. Seasonal acoustic occurrence and diel-vocalizing patterns of sperm whales in relation
Shabangu, FW, Andrew, RK
doaj   +1 more source

Using a coherent hydrophone array for observing sperm whale range, classification, and shallow-water dive profiles [PDF]

, 2014
Sperm whales in the New England continental shelf and slope were passively localized, in both range and bearing, and classified using a single low-frequency (
Alexander C. Bohn, Backus R. H., Delin Wang, Duong D. Tran, Madsen P. T., Nicholas C. Makris, Purnima Ratilal, Teloni V., Wei Huang, Zheng Gong   +9 more
core   +1 more source

Male sperm whale acoustic behavior observed from multipaths at a single hydrophone [PDF]

, 2005
Sperm whales generate transient sounds (clicks) when foraging. These clicks have been described as echolocation sounds, a result of having measured the source level and the directionality of these signals and having extrapolated results from biosonar ...
Adam, Olivier, Laplanche, Christophe, Lopatka, Maciej, Motsch, Jean-François   +3 more
core   +4 more sources

Factors associated with the differential distribution of cetaceans linked with deep habitats in the Western Mediterranean Sea

Scientific Reports, 2022
Deep-habitat cetaceans are generally difficult to study, leading to a limited knowledge of their population. This paper assesses the differential distribution patterns of three deep-habitat cetaceans (Sperm whale—Physeter macrocephalus, Risso’s dolphin ...
Estefanía Torreblanca, José-Carlos Báez, Raimundo Real, David Macías, Salvador García-Barcelona, Francisco Ferri-Yañez, Juan-Antonio Camiñas   +6 more
doaj   +1 more source

A Bayesian method to estimate the depth and the range of phonating sperm whales using a single hydrophone [PDF]

, 2007
Some bioacousticians have used a single hydrophone to calculate the depth/range of phonating diving animals. The standard one-hydrophone localization method uses multipath transmissions (direct path, sea surface, and seafloor reflections) of the animal ...
Backus R., Christophe Laplanche, Perez P., Urick R.   +3 more
core   +4 more sources

The impact of predation by marine mammals on Patagonian toothfish longline fisheries [PDF]

, 2015
Predatory interaction of marine mammals with longline fisheries is observed globally, leading to partial or complete loss of the catch and in some parts of the world to considerable financial loss.
A Atkinson, AD Foote, C Guinet, C Roche, CA Moreno, DG Ainley, DJ Agnew, DJ Hamer, DP Noren, E Gilman, Grant Ballard, H Kock K-, H Shono, IJ Staniland, IN Visser, J Clark, James Clark, JM Straley, JW Durban, K Reid, KA Forney, M Purves, MA Collins, MA Collins, Mark Belchier, Marta Söffker, Martin A. Collins, MJ Crawley, MJ Peterson, MJ Peterson, MR Clarke, MR Clarke, N Rabearisoa, P Tixier, PA Morin, Phil Trathan, PJN de Bruyn, PN Trathan, R Hucke-Gaete, RD Andrews, RL Pitman, RL Pitman, RL Pitman, Robert Scott, S Candy, WN Venables, В.Л. Юхов   +46 more
core   +6 more sources

Spatial and seasonal patterns in acoustic detections of sperm whales Physeter macrocephalus along the continental slope in the western North Atlantic Ocean

Endangered Species Research, 2018
The distribution and seasonal movements of sperm whales Physeter macrocephalus are poorly understood in the western North Atlantic Ocean, despite a long history of human exploitation of the species. Cetacean surveys in this region are typically conducted
Stanistreet, JE, Nowacek, DP, Bell, JT, Cholewiak, DM, Hildebrand, JA, Hodge, LEW, Van Parijs, SM, Read, AJ   +7 more
doaj   +1 more source

Stereotypical resting behavior of the sperm whale [PDF]

Current Biology, 2008
SummaryThough very little is known about sleep in wild cetaceans, toothed cetaceans in captivity sleep with one side of their brain at a time [1]. Such uni-hemispheric sleep is thought to enable swimming, voluntary breathing, predator avoidance and/or social contact during sleep at sea [2,3].
Kagari Aoki, Patrick J. O. Miller, Luke Rendell, Masao Amano   +3 more
openaire   +3 more sources

Bayesian three-dimensional reconstruction of toothed whale trajectories: Passive acoustics assisted with visual and tagging measurements [PDF]

, 2012
The author describes and evaluates a Bayesian method to reconstruct three-dimensional toothed whale trajectories from a series of echolocation signals.
Laplanche, Christophe
core   +3 more sources

An at-sea assessment of Argos location accuracy for three species of large whales, and the effect of deep-diving behavior on location error

Animal Biotelemetry, 2020
Background Argos satellite telemetry is used globally to track terrestrial and aquatic megafauna, yet the accuracy of this system has been described empirically only for a limited number of species.
Ladd M. Irvine, Martha H. Winsor, Tomas M. Follett, Bruce R. Mate, Daniel M. Palacios   +4 more
doaj   +1 more source