Analysis of bearings of vocalizing marine mammals in relation to passive acoustic density estimation

2015 ◽  
Vol 138 (3) ◽  
pp. 1792-1792
Author(s):  
Julia A. Vernon ◽  
Jennifer L. Miksis-Olds ◽  
Danielle Harris
Keyword(s):  
Density Estimation ◽  
Marine Mammals ◽  
Passive Acoustic

First in situ passive acoustic monitoring for marine mammals during operation of a tidal turbine in Ramsey Sound, Wales

2018 ◽  
Vol 590 ◽  
pp. 247-266 ◽  
Author(s):  
CE Malinka ◽  
DM Gillespie ◽  
JDJ Macaulay ◽  
R Joy ◽  
CE Sparling
Keyword(s):  
Marine Mammals ◽  
Acoustic Monitoring ◽  
Passive Acoustic Monitoring ◽  
Tidal Turbine ◽  
Passive Acoustic

DECAF - Density Estimation for Cetaceans from passive Acoustic Fixed Sensors

2009 ◽  
Author(s):  
Len Thomas ◽  
Tiago Marques ◽  
David Borchers ◽  
Catriona Harris ◽  
David Moretti ◽  
...  
Keyword(s):  
Density Estimation ◽  
Passive Acoustic

scholarly journals Passive acoustic methods for tracking the 3D movements of small cetaceans around marine structures

2020 ◽  
Author(s):  
Douglas Gillespie ◽  
Laura Palmer ◽  
Jamie Macaulay ◽  
Carol Sparling ◽  
Gordon Hastie
Keyword(s):  
Marine Mammals ◽  
New Technologies ◽  
Three Dimensional ◽  
Tidal Energy ◽  
Time Of Arrival ◽  
Marine Animals ◽  
Tidal Turbines ◽  
Wide Range ◽  
Tidal Turbine ◽  
Passive Acoustic

AbstractA wide range of anthropogenic structures exist in the marine environment with the extent of these set to increase as the global offshore renewable energy industry grows. Many of these pose acute risks to marine wildlife; for example, tidal energy generators have the potential to injure or kill seals and small cetaceans through collisions with moving turbine parts. Information on fine scale behaviour of animals close to operational turbines is required to understand the likely impact of these new technologies. There are inherent challenges associated with measuring the underwater movements of marine animals which have, so far, limited data collection. Here, we describe the development and application of a system for monitoring the three-dimensional movements of cetaceans in the immediate vicinity of a subsea structure. The system comprises twelve hydrophones and software for the detection and localisation of vocal marine mammals. We present data demonstrating the systems practical performance during a deployment on an operational tidal turbine between October 2017 and October 2019. Three-dimensional locations of cetaceans were derived from the passive acoustic data using time of arrival differences on each hydrophone. Localisation accuracy was assessed with an artificial sound source at known locations and a refined method of error estimation is presented. Calibration trials show that the system can accurately localise sounds to 2m accuracy within 20m of the turbine but that localisations become highly inaccurate at distances greater than 35m. The system is currently being used to provide data on rates of encounters between cetaceans and the turbine and to provide high resolution tracking data for animals close to the turbine. These data can be used to inform stakeholders and regulators on the likely impact of tidal turbines on cetaceans.

Acoustic detections of Arctic marine mammals near Ulukhaktok, Northwest Territories, Canada

2019 ◽  
Vol 97 (1) ◽  
pp. 72-80 ◽  
Author(s):  
W.D. Halliday ◽  
M.K. Pine ◽  
S.J. Insley ◽  
R.N. Soares ◽  
P. Kortsalo ◽  
...  
Keyword(s):  
Northwest Territories ◽  
Marine Mammals ◽  
Bowhead Whale ◽  
The Arctic ◽  
Delphinapterus Leucas ◽  
Anthropogenic Activity ◽  
Marine Animals ◽  
Vocal Activity ◽  
Beluga Whale Delphinapterus Leucas ◽  
Passive Acoustic

The Arctic marine environment is changing rapidly through a combination of sea ice loss and increased anthropogenic activity. Given these changes can affect marine animals in a variety of ways, understanding the spatial and temporal distributions of Arctic marine animals is imperative. We use passive acoustic monitoring to examine the presence of marine mammals near Ulukhaktok, Northwest Territories, Canada, from October 2016 to April 2017. We documented bowhead whale (Balaena mysticetus Linnaeus, 1758) and beluga whale (Delphinapterus leucas (Pallas, 1776)) vocalizations later into the autumn than expected, and we recorded bowhead whales in early April. We recorded ringed seal (Pusa hispida (Schreber, 1775)) vocalizations throughout our deployment, with higher vocal activity than in other studies and with peak vocal activity in January. We recorded bearded seals (Erignathus barbatus (Erxleben, 1777)) throughout the deployment, with peak vocal activity in February. We recorded lower bearded seal vocal activity than other studies, and almost no vocal activity near the beginning of the spring breeding season. Both seal species vocalized more when ice concentration was high. These patterns in vocal activity document the presence of each species at this site over autumn and winter and are a useful comparison for future monitoring.

Density estimation of leopard seals using a single stationary passive acoustic sensor.

2010 ◽  
Vol 127 (3) ◽  
pp. 1825-1825
Author(s):  
Holger Klinck ◽  
Nadine Constantinou ◽  
David K. Mellinger ◽  
Tracey Rogers
Keyword(s):  
Density Estimation ◽  
Acoustic Sensor ◽  
Passive Acoustic

Passive acoustic monitoring for marine mammals during Navy explosives training events off the coast of Virginia Beach, Virginia

2013 ◽  
Vol 134 (5) ◽  
pp. 4045-4045
Author(s):  
Cara F. Hotchkin ◽  
Mandy Shoemaker ◽  
Anurag Kumar ◽  
Carl Hager ◽  
David MacDuffee ◽  
...  
Keyword(s):  
Marine Mammals ◽  
Acoustic Monitoring ◽  
Passive Acoustic Monitoring ◽  
Virginia Beach ◽  
Passive Acoustic
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