Results 61 to 70 of about 2,588 (188)

Applicability of Information Theory to the Quantification of Responses to Anthropogenic Noise by Southeast Alaskan Humpback Whales

Entropy, 2008
We assess the effectiveness of applying information theory to the characterization and quantification of the affects of anthropogenic vessel noise on humpback whale (Megaptera novaeangliae) vocal behavior in and around Glacier Bay, Alaska.
J. Ellen Blue, Taylor Bucci, Christopher Chyba, Sean F. Hanser, Brenda McCowan, Laurance R. Doyle   +5 more
doaj   +1 more source

Comparative review of entanglement risk assessments for cetacean conservation and management

Conservation Biology, EarlyView.
Abstract Cetacean entanglement in fishing gear remains a major global threat that exposes persistent gaps in how fisheries management frameworks manage risk to nontarget species. Ecological risk assessment (ERA) offers a structured way to link exposure and consequences to an explicit statement of risk, but entanglement risk assessments vary widely in ...
Laura Joan Feyrer, Clair Evers, Hilary Moors‐Murphy   +2 more
wiley   +1 more source

Observer coverage and interaction rates determine the choice between design‐based and machine learning bycatch estimators for rare species

Conservation Biology, EarlyView.
Abstract Robust estimates of the magnitude of protected species bycatch are essential for effective fisheries management and marine conservation. Existing bycatch estimation methods typically struggle to accurately and precisely estimate the bycatch of rare species as a result of the statistical assumptions necessary to overcome infrequent encounters ...
Christopher Long, Robert Ahrens, T. Todd Jones, Zachary Siders   +3 more
wiley   +1 more source

Whale, Whale, Everywhere: Increasing Abundance of Western South Atlantic Humpback Whales (Megaptera novaeangliae) in Their Wintering Grounds.

PLoS ONE, 2016
The western South Atlantic (WSA) humpback whale population inhabits the coast of Brazil during the breeding and calving season in winter and spring. This population was depleted to near extinction by whaling in the mid-twentieth century.
Guilherme A Bortolotto, Daniel Danilewicz, Artur Andriolo, Eduardo R Secchi, Alexandre N Zerbini   +4 more
doaj   +1 more source

Time‐stressed Bar‐tailed Godwits exploit novel prey during migratory fuelling

Ibis, EarlyView.
Long‐distance migratory birds breeding in the Arctic face challenges as earlier snowmelt shifts the timing of vital resources. To keep up with these advancements, birds will need to modify their migration. Higher fuelling rates during stopover have been identified as a critical mechanism for accelerating migration, but this requires adequate food ...
Hailley Danielson‐Owczynsky, Allert I. Bijleveld, Ran Nathan, Sivan Toledo, Roeland A. Bom   +4 more
wiley   +1 more source

The Greenland–Scotland Ridge in a Changing Ocean: Time to Act?

Marine Ecology, EarlyView.
ABSTRACT The Greenland–Scotland Ridge is a submarine mountain that rises up to 500 m below the sea surface and extends from the east coast of Greenland to the continental shelf of Iceland and across the Faroe Islands to Scotland. The ridge not only separates deeper ocean basins on either side, that is, the North Atlantic and Arctic oceans, but also ...
Christophe Pampoulie, Saskia Brix, Haseeb S. Randhawa   +2 more
wiley   +1 more source

Quantifying Ship Strike Risk to Breeding Whales in a Multiple-Use Marine Park: The Great Barrier Reef

Frontiers in Marine Science, 2020
Spatial risk assessments are an effective management tool used in multiple-use marine parks to balance the needs for conservation of natural properties and to provide for varying socio-economic demands for development. The multiple-use Great Barrier Reef
Joshua N. Smith, Natalie Kelly, Simon Childerhouse, Jessica V. Redfern, Thomas J. Moore, David Peel   +5 more
doaj   +1 more source

Humpback Highs and Lows Amid Shifting Seas and a Northeast Pacific Marine Heatwave: Whale Demographics in the Main Hawaiian Islands, 2002–2023

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT North Pacific humpback whales are a celebrated conservation success, rebounding from extensive commercial whaling. Yet they remain vulnerable to the impacts of climate change, a multifaceted stressor that can exacerbate existing threats. During 2013–2016, a Northeast Pacific marine heatwave severely reduced forage availability in their feeding
S. M. Barber‐Meyer, T. Cheeseman, J. Barlow, L. Bejder, A. L. Bradford, R. Cartwright, M. Deakos, L. Evans, R. Finn, C. M. Gabriele, B. Goodwin, C. Hayslip, E. E. Henderson, M. Jones, M. Lammers, E. Lyman, D. M. McSwain, J. Mobley, M. Olio, A. A. Pack, D. M. Palacios, H. R. Spears, S. H. Stack, F. A. Sullivan, M. van Aswegen, K. M. Yano, S. Yin, A. Zoidis, J. J. Currie   +28 more
wiley   +1 more source

A Note on Suckling Behavior and Laterality in Nursing Humpback Whale Calves from Underwater Observations

Animals, 2017
We investigated nursing behavior on the Hawaiian breeding grounds for first year humpback whale (Megaptera novaeangliae) calves. We observed and video-documented underwater events with nursing behavior from five different whale groups.
Ann M. Zoidis, Kate S. Lomac-MacNair
doaj   +1 more source

Group‐Specific Variation in Heterodyne Frequencies of Biphonic Calls in Resident (R‐Type) Killer Whales Orcinus orca ater

Marine Mammal Science, Volume 42, Issue 4, October 2026.
ABSTRACT Biphonation—the simultaneous production of two independent fundamental frequencies within a single vocalization—is a prominent feature of killer whale calls, yet the factors influencing the presence and intensity of heterodyne frequencies, which arise from interactions between these fundamentals, remain poorly understood. We analyzed long‐term
Vera I. Fedorova, Ilya A. Volodin, Tatiana V. Ivkovich, Elena V. Volodina, Erich Hoyt, Olga A. Filatova   +5 more
wiley   +1 more source