7 Works

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

Anne Simonis, Robert Brownell, Bruce Thayre, Jennifer Trickey, Erin Oleson, Roderick Huntington & Simone Baumann-Pickering
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 utilized 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 through November 2014. Signals from Cuvier’s (Ziphius cavirostris) and Blainville’s beaked whales (Mesoplodon densirostris), and a third unidentified BW species were detected throughout...

Data from: Habitat modeling of Irrawaddy dolphins (Orcaella brevirostris) in the eastern Gulf of Thailand

Justine Jackson-Ricketts, Chalatip Junchompoo, Ellen Hines, Elliot Hazen, Louisa Ponnampalam, Anoukchika Ilangakoon & Somchai Monanunsap
Aim: The Irrawaddy dolphin (Orcaella brevirostris) is an endangered cetacean found throughout Southeast Asia. The main threat to this species is human encroachment, led by entanglement in fishing gear. Information on this data-poor species’ ecology and habitat use is needed to effectively inform spatial management. Location: We investigated the habitat of a previously unstudied group of Irrawaddy dolphins in the eastern Gulf of Thailand, between the villages of Laem Klat and Khlong Yai, in Trat...

Datasets supporting: Acute bottlenecks to the survival of juvenile Pygoscelis penguins occur immediately after fledging

Jefferson Hinke, George Watters, Christian Reiss, Jarrod Santora & Mercedes Santos
This data set contains a zipped file with 8 individual .csv files used to support the analysis of survival bottlenecks presented by Hinke et al.(2020), "Acute bottlenecks to the survival of juvenile Pygoscelis penguins occur immediately after fledging". Data include geographical position estimates from satellite telemetry studies on Adélie (Pygoscelis adeliae), chinstrap (P. antarctica), and gentoo (P. papua) penguins tracked from the Antarctic peninsula region, carcass counts from ship and beach surveys in the study...

Winter-run Chinook salmon resource selection function 2020

Peter Dudley
We use historic aerial redd surveys of Sacramento River winter-run Chinook salmon, coupled with 2D hydraulic modeling, and apply multivariable polynomial, logistic regression to calculate spawning resource selection functions (RSFs) based on water velocity and depth, and examine their interactions with water temperature. Our methods resulted in univariate and multivariate resource selection functions with interactions between both velocity and depth preference with changing temperature. Preferred depth increased and preferred velocity decreased with increasing temperature.

Data from: Abundance, survival, and annual rate of change in Cuvier's beaked whales (Ziphius cavirostris) on a Navy sonar range

K. Alexandra Curtis, Erin A. Falcone, Gregory S. Schorr, Jeffrey E. Moore, David J. Moretti, Jay Barlow & Erin Keene
Bayesian mark-recapture estimates of survival, abundance, and trend are reported for Cuvier’s beaked whales (Ziphius cavirostris) using a Navy training range off southern California. The deep-diving beaked whale family is exceptionally vulnerable to mid-frequency active sonar (MFAS), which has been implicated in mass strandings and altered foraging behavior. Extremely low sighting probabilities impede studies of population-level impacts of MFAS on beaked whales. The San Nicolas Basin hosts a Navy training range subject to frequent MFAS...

Positive selection and inactivation in vision and hearing genes of cetaceans

Michael McGowen, Georgia Tsagkogeorga, Joseph Williamson, Phillip Morin & Stephen Rossiter
The transition to an aquatic lifestyle in cetaceans (whales and dolphins) resulted in a radical transformation in their sensory systems. Toothed whales acquired specialized high-frequency hearing tied to the evolution of echolocation, while baleen whales evolved low-frequency hearing. More generally, all cetaceans show adaptations for hearing and seeing underwater. To determine the extent to which these phenotypic changes have been driven by molecular adaptation, we performed large-scale targeted sequence capture of 179 sensory genes across...

Quantifying thermal exposure for migratory riverine species: phenology of Chinook salmon populations predicts thermal stress

Alyssa FitzGerald, Sara John, Travis Apgar, Nathan Mantua & Benjamin Martin
Migratory species are particularly vulnerable to climate change because habitat throughout their entire migration cycle must be suitable for the species to persist. For migratory species in rivers, predicting climate change impacts is especially difficult because there is a lack of spatially-continuous and seasonally-varying stream temperature data, habitat conditions can vary for an individual throughout its life cycle, and vulnerability can vary by life stage and season. To predict thermal impacts on migratory riverine populations,...

Registration Year

  • 2020

Resource Types

  • Dataset


  • Southwest Fisheries Science Center
  • University of California, Santa Cruz
  • Queen Mary University of London
  • Pacific Islands Fisheries Science Center
  • Argentine Antarctic Institute
  • National Museum of Natural History
  • Naval Undersea Warfare Center
  • University of Amsterdam
  • Scripps Institution of Oceanography
  • Government of Thailand