Results 11 to 20 of about 688 (138)

Head and Whisker Behaviours Observed During Foraging in Northern Elephant Seals (<i>Mirounga angustirostris</i>). [PDF]

Ecol Evol
We observed a range of behaviours during foraging, including forward swimming, vertical diving, swooping, dabbing, sweeping and rotations. Head dabbing was also sometimes accompanied by the seal producing infrasounds, the bouts of which coincided with rhythmic whisker protractions. ABSTRACT Pinnipeds use their whiskers to detect and follow hydrodynamic
Chapman M, Frouin-Mouy H, De Leo FC, Grant RA.   +3 more
europepmc   +2 more sources

Geographic Variation in Diving Behaviour and Skin Isotope Ratios of Northern Bottlenose Whales, <i>Hyperoodon ampullatus</i>. [PDF]

Ecol Evol
High‐resolution multi‐sensor tag data from northern bottlenose whale populations in the northeast and northwest Atlantic showed differences in resting and foraging time budgets and behaviour. Skin biopsy stable isotopes corroborated likely dietary differences. Variability between populations has far‐reaching relevance for ecology and conservation, with
Hooker SK, Siegal E, Plint T, Feyrer LJ, Narazaki T, Aoki K, Bivins M, Miller PJO.   +7 more
europepmc   +2 more sources

Near-real-time acoustic monitoring of beaked whales and other cetaceans using a Seaglider™. [PDF]

PLoS ONE, 2012
In most areas, estimating the presence and distribution of cryptic marine mammal species, such as beaked whales, is extremely difficult using traditional observational techniques such as ship-based visual line transect surveys.
Holger Klinck, David K Mellinger, Karolin Klinck, Neil M Bogue, James C Luby, William A Jump, Geoffrey B Shilling, Trina Litchendorf, Angela S Wood, Gregory S Schorr, Robin W Baird   +10 more
doaj   +1 more source

A Quieter Ocean: Experimentally Derived Differences in Attentive Responses of Tursiops truncatus to Anthropogenic Noise Playbacks before and during the COVID-19-Related Anthropause

Animals, 2023
The effects of anthropogenic noise continue to threaten marine fauna, yet the impacts of human-produced sound on the broad aspects of cognition in marine mammals remain relatively understudied. The shutdown of non-essential activities due to the COVID-19-
Paige E. Stevens, Veda Allen, Jason N. Bruck   +2 more
doaj   +1 more source

Auditory evoked potential in stranded melon-headed whales (Peponocephala electra): With severe hearing loss and possibly caused by anthropogenic noise pollution

Ecotoxicology and Environmental Safety, 2021
Highly concentrated live mass stranding events of dolphins and whales happened in the eastern coast of China between June and October 2021. The current study adopted the non-invasive auditory evoked-potential technique to investigate the hearing ...
Zhi-Tao Wang, Alexander Ya Supin, Tomonari Akamatsu, Peng-Xiang Duan, Yi-Ning Yang, Ke-Xiong Wang, Ding Wang   +6 more
doaj   +1 more source

Marine Mammal HiCUP: A High Current Underwater Platform for the Long-Term Monitoring of Fine-Scale Marine Mammal Behavior Around Tidal Turbines

Frontiers in Marine Science, 2022
Arrays of tidal turbines are being considered for tidally energetic coastal sites which can be important habitat for many species of marine mammal. Understanding risks to marine mammals from collisions with moving turbine blades must be overcome before ...
Douglas Gillespie, Michael Oswald, Gordon Hastie, Carol Sparling   +3 more
doaj   +1 more source

Applying Two Active Acoustic Technologies to Document Presence of Large Marine Animal Targets at a Marine Renewable Energy Site

Journal of Marine Science and Engineering, 2020
Coastal regions are highly used by humans. The growing marine renewable energy (MRE) industry will add to existing anthropogenic pressures in these regions.
Garrett Staines, Gayle Barbin Zydlewski, Haley A. Viehman, Rachel Kocik   +3 more
doaj   +1 more source

Bio-Inspired Covert Active Sonar Strategy

Sensors, 2018
The covertness of the active sonar is a very important issue and the sonar signal waveform design problem was studied to improve covertness of the system.
Jiajia Jiang, Xianquan Wang, Fajie Duan, Chunyue Li, Xiao Fu, Tingting Huang, Lingran Bu, Ling Ma, Zhongbo Sun   +8 more
doaj   +1 more source

Cooperative spectrum sensing and data transmission optimization for multichannel cognitive sonar communication network

EURASIP Journal on Wireless Communications and Networking, 2017
The natural acoustic system used by marine mammals and the artificial sonar system used by humans coexist in the underwater cognitive sonar communication networks (CSCN). They share the spectrum when they are in the same waters.
Xin Liu, Min Jia
doaj   +1 more source

Blue whales respond to anthropogenic noise.

PLoS ONE, 2012
Anthropogenic noise may significantly impact exposed marine mammals. This work studied the vocalization response of endangered blue whales to anthropogenic noise sources in the mid-frequency range using passive acoustic monitoring in the Southern ...
Mariana L Melcón, Amanda J Cummins, Sara M Kerosky, Lauren K Roche, Sean M Wiggins, John A Hildebrand   +5 more
doaj   +1 more source