Results 31 to 40 of about 7,484 (165)

Biosonar performance of foraging beaked whales (Mesoplodon densirostris) [PDF]

, 2005
Toothed whales (Cetacea, odontoceti) emit sound pulses to probe their surroundings by active echolocation. Noninvasive, acoustic Dtags were placed on deep-diving Blainville's beaked whales (Mesoplodon densirostris) to record their ultrasonic clicks and ...
Madsen, P T, Zimmer, W M X, Tyack, P, Johnson, M, de Soto, N A, Tyack, P ; id_orcid   +5 more
core   +1 more source

Clicking in a killer whale habitat : narrow-band, high-frequency biosonar clicks of harbour porpoise (Phocoena phocoena) and Dall's porpoise (Phocoenoides dalli) [PDF]

, 2012
This study was funded by the Aarhus University Research Foundation, the Danish Ministry of Environment (Jagttegnsmidlerne) and by frame grants to PTM from the National Danish Science Research Council.
Erin Ashe, Line A. Kyhn, Line A Kyhn, Williams, Robert, Frants H Jensen, Frants H. Jensen, Tougaard, Jakob, Jensen, Frants H., Kyhn, Line A., Kristian Beedholm, Beedholm, Kristian, Jakob Tougaard, Rob Williams, Peter T. Madsen, Ashe, Erin, Madsen, Peter T., Peter T Madsen, Jensen Frants H., Madsen Peter T., Kyhn Line A., Ashe Erin, Williams Rob, Beedholm Kristian, Tougaard Jakob   +23 more
core   +1 more source

Echolocation as a Means for People with Visual Impairment (PVI) to Acquire Spatial Knowledge of Virtual Space

, 2021
In virtual environments, spatial information is communicated visually. This prevents people with visual impairment (PVI) from accessing such spaces.
Baker, S, Waycott, J, Andrade, R, Vetere, F, Frank Vetere, Ronny Andrade, Steven Baker, Jenny Waycott   +7 more
core   +1 more source

Female mate choice can drive the evolution of high frequency echolocation in bats: a case study with Rhinolophus mehelyi. [PDF]

PLoS ONE, 2014
Animals employ an array of signals (i.e. visual, acoustic, olfactory) for communication. Natural selection favours signals, receptors, and signalling behaviour that optimise the received signal relative to background noise.
Sébastien J Puechmaille, Ivailo M Borissov, Sándor Zsebok, Benjamin Allegrini, Mohammed Hizem, Sven Kuenzel, Maike Schuchmann, Emma C Teeling, Björn M Siemers   +8 more
doaj   +1 more source

Geographic variation in the echolocation calls of the endemic Cape horseshoe bat, Rhinolophus capensis (Chiroptera: Rhinolophidae) [PDF]

, 2009
Includes bibliographical references (leaves 63-84).Several intrinsic (body size) and extrinsic (foraging ecology and communication) factors are suggested to influence call frequency divergence in high duty-cycle bats.
Odendaal, Lizelle Janine
core   +1 more source

Open‐source workflow approaches to passive acoustic monitoring of bats

Methods in Ecology and Evolution, 2023
The affordability, storage and power capacity of compact modern recording hardware have evolved passive acoustic monitoring (PAM) of animals and soundscapes into a non‐invasive, cost‐effective tool for research and ecological management particularly ...
Signe M. M. Brinkløv, Jamie Macaulay, Christian Bergler, Jakob Tougaard, Kristian Beedholm, Morten Elmeros, Peter Teglberg Madsen   +6 more
doaj   +1 more source

Atmospheric humidity affects global variation of bat echolocation via indirect effects

Frontiers in Ecology and Evolution, 2022
The peak frequency of bat echolocation is a species-specific functional trait linked to foraging ecology. It is tailored via evolution to suit conditions within the distribution range of each species, but the evolutionary drivers are not yet well ...
Miika Kotila, Samuli Helle, Harry J. Lehto, Danny Rojas, Eero J. Vesterinen, Eero J. Vesterinen, Thomas M. Lilley   +6 more
doaj   +1 more source

Audition in vampire bats, Desmodus rotundus [PDF]

, 1990
1. Within the tonotopic organization of the inferior colliculus two frequency ranges are well represented: a frequency range within that of the echolocation signals from 50 to 100 kHz, and a frequency band below that of the echolocation sounds, from 10 ...
J Comp Physiol A, H. Schweizer, Schmidt, U., P. Schlegel, G. Neuweiler, U. Schmidt, Schlegel, P., Neuweiler, Gerhard, Schweizer, Hermann   +8 more
core   +1 more source

A glimpse into the foraging and movement behaviour of Nyctalus aviator; a complementary study by acoustic recording and GPS tracking

Royal Society Open Science, 2023
Species of open-space bats that are relatively large, such as bats from the genus Nyctalus, are considered as high-risk species for collisions with wind turbines (WTs).
Yoshifumi Niga, Emyo Fujioka, Olga Heim, Akito Nomi, Dai Fukui, Shizuko Hiryu   +5 more
doaj   +1 more source

Acoustic and foraging behavior of a Baird’s beaked whale, Berardius bairdii, exposed to simulated sonar [PDF]

, 2014
Research was supported by the US Navy Chief of Naval Operations, Environmental Readiness Program, the Office of Naval Research, the Naval Postgraduate School, and the National Research Council.Beaked whales are hypothesized to be particularly sensitive ...
A. K. Stimpert, Friedlaender, A., Calambokidis, John, Calambokidis, J., J. A. Goldbogen, Schorr, Greg, Stimpert, Alison, De Ruiter, Stacy Lynn, Southall, Brandon, A. Friedlaender, Friedlaender, Ari, Stimpert, A.K., Goldbogen, J.A., Moretti, David, D. J. Moretti, J. Calambokidis, G. S. Schorr, Falcone, E.A., Moretti, D.J., DeRuiter, S.L., Southall, B.L., S. L. DeRuiter, Falcone, Erin, Goldbogen, Jeremy, Schorr, G.S., B. L. Southall, E. A. Falcone   +26 more
core   +1 more source