scholarly journals Effects of duty-cycled passive acoustic recordings on detecting the presence of beaked whales in the northwest Atlantic

2016 ◽  
Vol 140 (1) ◽  
pp. EL31-EL37 ◽  
Author(s):  
Joy E. Stanistreet ◽  
Douglas P. Nowacek ◽  
Andrew J. Read ◽  
Simone Baumann-Pickering ◽  
Hilary B. Moors-Murphy ◽  
...  
Keyword(s):  
Northwest Atlantic ◽  
Beaked Whales ◽  
Passive Acoustic

scholarly journals Estimating cetacean population density using fixed passive acoustic sensors: An example with Blainville’s beaked whales

2009 ◽  
Vol 125 (4) ◽  
pp. 1982-1994 ◽  
Author(s):  
Tiago A. Marques ◽  
Len Thomas ◽  
Jessica Ward ◽  
Nancy DiMarzio ◽  
Peter L. Tyack
Keyword(s):  
Population Density ◽  
Acoustic Sensors ◽  
Beaked Whales ◽  
Passive Acoustic

scholarly journals Using passive acoustic monitoring to document the distribution of beaked whale species in the western North Atlantic Ocean

2017 ◽  
Vol 74 (12) ◽  
pp. 2098-2109 ◽  
Author(s):  
Joy E. Stanistreet ◽  
Douglas P. Nowacek ◽  
Simone Baumann-Pickering ◽  
Joel T. Bell ◽  
Danielle M. Cholewiak ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
North Atlantic ◽  
North Atlantic Ocean ◽  
Anthropogenic Impacts ◽  
Acoustic Monitoring ◽  
Latitudinal Gradients ◽  
Beaked Whale ◽  
Passive Acoustic Monitoring ◽  
Beaked Whales ◽  
Passive Acoustic

Little is known about the ecology of many beaked whale species, despite concerns raised by mass strandings linked to certain sources of anthropogenic noise. Here, we used passive acoustic monitoring to examine spatial and temporal patterns in beaked whale occurrence at six locations along the continental slope in the western North Atlantic Ocean. We analyzed 2642 days of recordings collected between 2011 and 2015, and identified echolocation signals from northern bottlenose whales (Hyperoodon ampullatus), Cuvier’s (Ziphius cavirostris), Sowerby’s (Mesoplodon bidens), Gervais’, (Mesoplodon europaeus), and Blainville’s (Mesoplodon densirostris) beaked whales, and one signal type of unknown origin. We recorded multiple species at each site, with detections generally occurring year-round, and observed latitudinal gradients and site-specific variation in relative species occurrence. Notably, we regularly detected Cuvier’s beaked whales in a region where they have not been commonly observed, and discovered potential habitat partitioning among Cuvier’s and Gervais’ beaked whales within their overlapping ranges. This information on the distribution and seasonal occurrence of North Atlantic beaked whale species offers new insight into patterns of habitat use, and provides a year-round baseline from which to assess potential anthropogenic impacts.

scholarly journals Spatio-temporal variation in click production rates of beaked whales: Implications for passive acoustic density estimation

2017 ◽  
Vol 141 (3) ◽  
pp. 1962-1974 ◽  
Author(s):  
Victoria E. Warren ◽  
Tiago A. Marques ◽  
Danielle Harris ◽  
Len Thomas ◽  
Peter L. Tyack ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Density Estimation ◽  
Production Rates ◽  
Beaked Whales ◽  
Spatio Temporal ◽  
Passive Acoustic

scholarly journals Cetacean occurrence offshore of Washington from long-term passive acoustic monitoring

2021 ◽  
Vol 168 (8) ◽  
Author(s):  
Ally Rice ◽  
Amanda J. Debich ◽  
Ana Širović ◽  
Erin M. Oleson ◽  
Jennifer S. Trickey ◽  
...  
Keyword(s):  
Habitat Use ◽  
Sperm Whale ◽  
Acoustic Monitoring ◽  
Conservation Strategies ◽  
Physeter Macrocephalus ◽  
Passive Acoustic Monitoring ◽  
Temporal Separation ◽  
Cetacean Species ◽  
Beaked Whales ◽  
Passive Acoustic

AbstractA variety of cetacean species inhabit the productive waters offshore of Washington State, USA. Although the general presence of many of these species has been documented in this region, our understanding of fine-scale habitat use is limited. Here, passive acoustic monitoring was used to investigate the spatial and temporal distributions of ten cetacean species at three locations offshore of Washington. Between 2004 and 2013, a total of 2845 days of recordings were collected from sites on the continental shelf and slope, and in a submarine canyon. Acoustic presence was higher for all species at sites farther offshore. Detections were highest during the fall and winter for blue (Balaenoptera musculus), fin (B. physalus), and humpback whales (Megaptera novaeangliae), likely related to reproductive behavior, while minke whales (B. acutorostrata) were only detected on two days. Odontocetes showed temporal separation, with sperm whale (Physeter macrocephalus) detections highest in spring, Risso’s (Grampus griseus) and Pacific white-sided dolphins (Lagenorhynchus obliquidens) highest in summer, and Stejneger’s beaked whales (Mesoplodon stejnegeri), Cuvier’s beaked whales (Ziphius cavirostris), and the BW37V signal type highest in winter or spring. There was interannual variation in detections for most mysticete species, which may be linked to oceanographic conditions: blue and fin whale detections increased during 2007 and 2008, and fin and humpback whale detections increased in 2011. These results inform our understanding of cetacean behavior and habitat use in this region and may aid in the development of conservation strategies suited to the dynamic conditions that drive cetacean distribution.

scholarly journals Passive acoustic detection of deep-diving beaked whales

2008 ◽  
Vol 124 (5) ◽  
pp. 2823-2832 ◽  
Author(s):  
Walter M. X. Zimmer ◽  
John Harwood ◽  
Peter L. Tyack ◽  
Mark P. Johnson ◽  
Peter T. Madsen
Keyword(s):  
Acoustic Detection ◽  
Deep Diving ◽  
Beaked Whales ◽  
Passive Acoustic

scholarly journals An Acoustic Survey of Beaked Whales and Kogia spp. in the Mariana Archipelago Using Drifting Recorders

2021 ◽  
Vol 8 ◽  
Author(s):  
Jennifer L. K. McCullough ◽  
Johanna L. K. Wren ◽  
Erin M. Oleson ◽  
Ann N. Allen ◽  
Zachary A. Siders ◽  
...  
Keyword(s):  
Sperm Whales ◽  
Distribution Models ◽  
The West ◽  
Cetacean Species ◽  
Forest Models ◽  
Random Forest Models ◽  
Beaked Whales ◽  
Passive Acoustic ◽  
Limited Surface ◽  
Temperature Depth

The distribution, abundance, and habitat of cryptic cetacean species such as beaked whales and dwarf/pygmy sperm whales (Kogia spp.) are challenging to study due to their long dive times and/or very limited surface behavior. Even less is known in minimally studied and remote regions, including the Mariana Archipelago and parts of the broader western Pacific. In 2018, we deployed a network of eight Drifting Acoustic Spar Buoy Recorders (DASBRs) on the west side of the Mariana Archipelago with the goal of examining the distribution and habitat of beaked whales and Kogia spp. in this region using passive acoustic monitoring. Concurrently, conductivity-temperature-depth (CTD) data were collected within the drift area and combined with satellite oceanographic data to build Ensemble Random Forest Models to identify specific oceanographic features that determine the distribution of these species. DASBRs deployed at locations ranging from 13°N to 18°N generally drifted from east to west between the Mariana Archipelago and the West Mariana Ridge. Spectral and temporal characteristics of echolocation signals were used to identify the presence of beaked whales and Kogia spp. species. This dataset contained frequency modulated (FM) pulses characteristic of Longman’s (Indopacetus pacificus), Cuvier’s (Ziphius cavirostris), and Blainville’s (Mesoplodon densirostris) beaked whales, as well as the unidentified beaked whale FM pulse known as the “BWC,” along with narrow-band high frequency clicks from Kogia spp. The detection rate was substantially higher for all species on the five tracks in the region north of 15.5°N than for those drifts occurring farther south. Species distribution models suggest that differences in the oceanographic characteristics between the northern and southern regions may impact foraging opportunities, possibly explaining the specific ecological niche for these species within this water mass. This is the first study of the distribution of cryptic cetacean species within the wider Mariana Archipelago region. We demonstrate that autonomous drifting acoustic recorders, combined with environmental sampling and remote satellite data are a powerful tool for studying the habitat dependent distribution of cryptic cetacean species.

scholarly journals Co-occurrence of beaked whale strandings and naval sonar in the Mariana Islands, Western Pacific

2020 ◽  
Vol 287 (1921) ◽  
pp. 20200070 ◽  
Author(s):  
Anne E. Simonis ◽  
Robert L. Brownell ◽  
Bruce J. Thayre ◽  
Jennifer S. Trickey ◽  
Erin M. Oleson ◽  
...  
Keyword(s):  
Mariana Islands ◽  
Beaked Whale ◽  
Acoustic Activity ◽  
Active Sonar ◽  
History Of ◽  
Antisubmarine Warfare ◽  
Beaked Whales ◽  
Ziphius Cavirostris ◽  
Passive Acoustic ◽  
Mass Stranding

Mid-frequency active sonar (MFAS), used for antisubmarine warfare (ASW), has been associated with multiple beaked whale (BW) mass stranding events. Multinational naval ASW exercises have used MFAS offshore of the Mariana Archipelago semi-annually since 2006. We report BW and MFAS acoustic activity near the islands of Saipan and Tinian from March 2010 to November 2014. Signals from Cuvier's ( Ziphius cavirostris) and Blainville's beaked whales ( Mesoplodon densirostris ), and a third unidentified BW species, were detected throughout the recording period. Both recorders documented MFAS on 21 August 2011 before two Cuvier's beaked whales stranded on 22–23 August 2011. We compared the history of known naval operations and BW strandings from the Mariana Archipelago to consider potential threats to BW populations. Eight BW stranding events between June 2006 and January 2019 each included one to three animals. Half of these strandings occurred during or within 6 days after naval activities, and this co-occurrence is highly significant. We highlight strandings of individual BWs can be associated with ASW, and emphasize the value of ongoing passive acoustic monitoring, especially for beaked whales that are difficult to visually detect at sea. We strongly recommend more visual monitoring efforts, at sea and along coastlines, for stranded cetaceans before, during and after naval exercises.

Tracking beaked whales with a passive acoustic profiler float

2013 ◽  
Vol 133 (2) ◽  
pp. 731-740 ◽  
Author(s):  
Haru Matsumoto ◽  
Christopher Jones ◽  
Holger Klinck ◽  
David K. Mellinger ◽  
Robert P. Dziak ◽  
...  
Keyword(s):  
Beaked Whales ◽  
Passive Acoustic
Sign in / Sign up

Export Citation Format

Share Document