A5087835227- Marine animal studies overview
- Underwater Acoustics Research
- Arctic and Antarctic ice dynamics
- Animal Vocal Communication and Behavior
- Maritime Navigation and Safety
- Marine and fisheries research
- Underwater Vehicles and Communication Systems
- Noise Effects and Management
- Cephalopods and Marine Biology
- Scientific Research and Discoveries
- Avian ecology and behavior
- Seismic Waves and Analysis
- Identification and Quantification in Food
- Marine and coastal plant biology
- Ichthyology and Marine Biology
- Acoustic Wave Phenomena Research
- Marine Ecology and Invasive Species
- Cryospheric studies and observations
- Offshore Engineering and Technologies
- Fish Ecology and Management Studies
University of Washington
2017-2025
Cooperative Institute for Research in Environmental Sciences
2021-2025
NOAA National Marine Fisheries Service
2014-2024
NOAA National Marine Fisheries Service Alaska Fisheries Science Center
2015-2024
National Oceanic and Atmospheric Administration
2011-2021
Norwegian Polar Institute
2021
Alaska Department of Fish and Game
2019-2020
University of California, San Diego
2019
Oceanwide Science Institute
2019
Scripps Institution of Oceanography
2019
Baleen whales ( Mysticeti ) communicate using low-frequency acoustic signals. These long-wavelength sounds can be detected over hundreds of kilometres, potentially allowing contact large distances. Low-frequency noise from ships (20–200 Hz) overlaps signals used by baleen whales, and increased levels underwater have been documented in areas with high shipping traffic. Reported responses to include: habitat displacement, behavioural changes alterations the intensity, frequency intervals...
Over a decade after the Cook Inlet beluga (Delphinapterus leucas) was listed as endangered in 2008, population has shown no sign of recovery. Lack ecological knowledge limits understanding of, and ability to manage, potential threats impeding recovery this declining population. National Oceanic Atmospheric Administration Fisheries, partnership with Alaska Department Fish Game, initiated passive acoustics monitoring program 2017 investigate seasonal occurrence by deploying series acoustic...
Abstract Archival bottom‐mounted audio recorders were deployed in nine different areas of the western Mediterranean Sea, Strait Gibraltar, and adjacent North Atlantic waters during 2006–2009 to study fin whale ( Balaenoptera physalus ) seasonal presence population structure. Analysis 29,822 recording hours revealed typical long, patterned sequences 20 Hz notes (here called “song”), back‐beats, 135–140 notes, downsweeps. Acoustic parameters (internote interval, note duration, frequency range,...
Little is known about migration patterns and seasonal distribution away from coastal summer feeding habitats of many pelagic baleen whales. Recently, large-scale passive acoustic monitoring networks have become available to explore identify critical these species. North Atlantic minke whales (Balaenoptera acutorostrata) perform migrations between high latitude low winter breeding grounds. While the abundance species has been studied across their range, data on habitat are virtually missing....
Beluga whales, Delphinapterus leucas, have a graded call system; types exist on continuum making classification challenging. A description of vocalizations from the eastern Beaufort Sea beluga population during its spring migration are presented here, using both non-parametric tree analysis (CART), and Random Forest analysis. Twelve frequency duration measurements were made 1019 calls recorded over 14 days off Icy Cape, Alaska, resulting in 34 identifiable with 83% agreement for CART...
While hearing is the primary sensory modality for odontocetes, there are few data addressing variation within a natural population. This work describes ranges (4–150 kHz) and sensitivities of seven apparently healthy, wild beluga whales (Delphinapterus leucas) during population health assessment project that captured released belugas in Bristol Bay, Alaska. The baseline abilities subsequent variations were addressed. Hearing was measured using auditory evoked potentials (AEPs). All...
Odontocete cetaceans use biosonar clicks to acoustically probe their aquatic environment with an aptitude unmatched by man-made sonar. A cornerstone of this ability is short, broadband pulses produced in the region upper nasal passages. Here we provide empirical evidence that a beluga whale (Delphinapterus leucas) uses two signal generators simultaneously when echolocating. We show are combined as they transmitted through melon produce single echolocation click emitted from front animal....
Abstract The biosonar system of odontocetes enables directional sound transmission and reception. Beluga whales ( Delphinapterus leucas ) are notable among as they can alter the shape their fatty melon during transmission, potentially suggesting distinct acoustic capabilities. In this study, we developed a model beluga whale using computed tomography scanning structural reconstruction to examine reception in species. This could modulate sounds into beam either single or dual sources. Across...
Animal welfare evaluation is a difficult task. Behavioural and physiological parameters are commonly used, but their interpretation not always robust. The study of vocal behaviour as an indicator animal has proven to be effective in some terrestrial captive mammals, little known about its application marine mammals. acoustic activity two beluga whales (Delphinapterus leucas) was monitored during procedures: (1) before after air transportation new facilities (2) the introduction four harbour...
ABSTRACT Documenting hearing abilities is vital to understanding a species’ acoustic ecology and for predicting the impacts of increasing anthropogenic noise. Cetaceans use sound essential biological functions such as foraging, navigation communication; considered be their primary sensory modality. Yet, we know little regarding most, if not all, cetacean populations, which limits our ecology, population level variability potential We obtained audiograms (5.6–150 kHz) 26 wild beluga whales...
Abstract In order to help develop hypotheses of connectivity among North Pacific fin whales, we examine recordings from 10 regions collected in the spring and fall. We a Random Forest model classify whale note types that avoids manual classification errors. also present method objectively quantifies pattern composition recordings. find near Hawaii have distinctive patterns, similar those found other central Pacific, suggesting potential migration pathways. Our results are consistent with...
The endangered beluga whale (Delphinapterus leucas) population in Cook Inlet, AK faces threats from a variety of anthropogenic factors, including coastal development, oil and gas exploration, vessel traffic, military activities. To address existing gaps understanding about the occurrence belugas project was developed to use passive acoustic monitoring document year-round distribution belugas, as well killer whales (Orcinus orca), which prey on belugas. Beginning June 2009, ten moorings were...
As part of a long-term research program, Cook Inlet beluga (Delphinapterus leucas) presence was acoustically monitored with two types acoustic sensors utilized in tandem moorings deployed year-round: an ecological recorder (EAR) and cetacean porpoise detector (C-POD). The EAR used primarily to record the calls, whistles, buzzes produced by belugas killer whales (Orcinus orca). C-POD log classify echolocation clicks from belugas, whales, porpoises. This paper describes mooring packages that...