Results 1 to 10 of about 669 (121)

Use of multibeam imaging sonar for observation of marine mammals and fish on a marine renewable energy site. [PDF]

PLoS ONE, 2022
Environmental data is crucial for planning, permitting, execution and post construction monitoring of marine renewable energy projects. In harsh conditions in which marine renewable energy is harvested, integrated monitoring platforms comprising ...
Francisco Francisco, Anke Bender, Jan Sundberg   +2 more
doaj   +6 more sources

Automated Detection and Tracking of Marine Mammals in the Vicinity of Tidal Turbines Using Multibeam Sonar

Journal of Marine Science and Engineering, 2023
Understanding how marine animals behave around tidal turbines is essential if we are to quantify how individuals and populations may be affected by the installation of these devices in the coming decades. Our particular interest is in collision risk, and
Douglas Gillespie, Gordon Hastie, Jessica Montabaranom, Emma Longden, Katie Rapson, Anhelina Holoborodko, Carol Sparling   +6 more
doaj   +6 more sources

Detection of Visual Signatures of Marine Mammals and Fish within Marine Renewable Energy Farms using Multibeam Imaging Sonar [PDF]

Journal of Marine Science and Engineering, 2019
Techniques for marine monitoring have been greatly evolved over the past decades, making the acquisition of environmental data safer, more reliable and more efficient.
Francisco Francisco, Jan Sundberg
doaj   +5 more sources

Automated detection and tracking of marine mammals: A novel sonar tool for monitoring effects of marine industry [PDF]

Aquatic Conservation: Marine and Freshwater Ecosystems, 2019
Abstract Many marine industries may pose acute risks to marine wildlife. For example, tidal turbines have the potential to injure or kill marine mammals through collisions with turbine blades. However, the quantification of collision risk is currently limited by a lack of suitable technologies to collect long‐term data on marine mammal behaviour ...
Gordon D Hastie, Gi-Mick Wu, Simon Moss   +2 more
exaly   +4 more sources

A risk function for behavioral disruption of Blainville's beaked whales (Mesoplodon densirostris) from mid-frequency active sonar. [PDF]

PLoS ONE, 2014
There is increasing concern about the potential effects of noise pollution on marine life in the world's oceans. For marine mammals, anthropogenic sounds may cause behavioral disruption, and this can be quantified using a risk function that relates sound
David Moretti, Len Thomas, Tiago Marques, John Harwood, Ashley Dilley, Bert Neales, Jessica Shaffer, Elena McCarthy, Leslie New, Susan Jarvis, Ronald Morrissey   +10 more
doaj   +3 more sources

Behavioural responses of common dolphins to naval sonar [PDF]

Royal Society Open Science
Despite strong interest in how noise affects marine mammals, little is known for the most abundant and commonly exposed taxa. Social delphinids occur in groups of hundreds of individuals that travel quickly, change behaviour ephemerally and are not ...
Brandon L. Southall, John W. Durban, John Calambokidis, Caroline Casey, James A. Fahlbusch, Holly Fearnbach, Kiirsten R. Flynn, Selene Fregosi, Ari S. Friedlaender, Samantha G. M. Leander, Fleur Visser   +10 more
doaj   +2 more sources

200 kHz Commercial Sonar Systems Generate Lower Frequency Side Lobes Audible to Some Marine Mammals

PLoS ONE, 2014
The spectral properties of pulses transmitted by three commercially available 200 kHz echo sounders were measured to assess the possibility that marine mammals might hear sound energy below the center (carrier) frequency that may be generated by transmitting short rectangular pulses.
Zhiqun Daniel Deng, Brandon L Southall, Thomas J Carlson   +2 more
exaly   +5 more sources

Discrete‐space continuous‐time models of marine mammal exposure to Navy sonar [PDF]

Ecological Applications, 2021
AbstractAssessing the patterns of wildlife attendance to specific areas is relevant across many fundamental and applied ecological studies, particularly when animals are at risk of being exposed to stressors within or outside the boundaries of those areas.
Charlotte M. Jones‐Todd, Enrico Pirotta, John W. Durban, Diane E. Claridge, Robin W. Baird, Erin A. Falcone, Gregory S. Schorr, Stephanie Watwood, Len Thomas   +8 more
openaire   +5 more sources

Changes in the Movement and Calling Behavior of Minke Whales (Balaenoptera acutorostrata) in Response to Navy Training

Frontiers in Marine Science, 2021
Many marine mammals rely on sound for foraging, maintaining group cohesion, navigation, finding mates, and avoiding predators. These behaviors are potentially disrupted by anthropogenic noise.
Ian N. Durbach, Ian N. Durbach, Catriona M. Harris, Cameron Martin, Tyler A. Helble, E. Elizabeth Henderson, Glenn Ierley, Len Thomas, Stephen W. Martin   +8 more
doaj   +1 more source

How Do Marine Mammals Manage and Usually Avoid Gas Emboli Formation and Gas Embolic Pathology? Critical Clues From Studies of Wild Dolphins

Frontiers in Marine Science, 2021
Decompression theory has been mainly based on studies on terrestrial mammals, and may not translate well to marine mammals. However, evidence that marine mammals experience gas bubbles during diving is growing, causing concern that these bubbles may ...
Andreas Fahlman, Andreas Fahlman, Michael J. Moore, Randall S. Wells   +3 more
doaj   +1 more source