Results 31 to 40 of about 6,977 (222)

Beluga whale (Delphinapterus leucas) vocalizations and call classification from the eastern Beaufort Sea population [PDF]

, 2015
Funding was provided by the Bureau of Ocean Energy Management under InterAgency Agreement M09PG00016. E.C.G. was supported by a National Research Council (National Academy of Sciences) Postdoctoral Fellowship.Beluga whales, Delphinapterus leucas, have a ...
Berchok, Catherine, Castellote, Manuel, Garland, Ellen Clare   +2 more
core   +1 more source

Economic load dispatch solution of large-scale power systems using an enhanced beluga whale optimizer

Alexandria Engineering Journal, 2023
The aim of the optimization economic load dispatch (ELD) problem is to assign the optimal generated power of the thermal units for cost reduction with satisfying the loading of the operational constraints.
Mohamed H. Hassan, Salah Kamel, Francisco Jurado, Mohamed Ebeed, Mohamed F. Elnaggar   +4 more
doaj   +1 more source

Satellite imagery survey of beluga whales in the Severn and Winisk River estuaries

Arctic Science
Very high resolution (VHR) satellite imagery has expanded the scale at which researchers can monitor marine mammal species in Arctic and subarctic regions.
Jordan B. Stewart, Marianne Marcoux, Cortney A. Watt   +2 more
doaj   +1 more source

Transitions of social-ecological subsistence systems in the Arctic [PDF]

, 2017
Transitions of social-ecological systems (SES) expose governance systems to new challenges. This is particularly so in the Arctic where resource systems are increasingly subjected to global warming, industrial development and globalization which ...
Clark, Douglas A., Fauchald, Per, Hausner, Vera, Schmidt, Jennifer   +3 more
core   +4 more sources

Range contraction in a beluga whale population [PDF]

Endangered Species Research, 2010
The small, isolated population of beluga whales Delphinapterus leucas in Cook Inlet, Alaska, USA, has had a distinct contraction in range over the past 3 decades. This contraction is a function of a decline in abundance, evidently caused, at least in part, by high takes during unregu- lated subsistence hunting.
DJ Rugh, KEW Shelden, RC Hobbs
openaire   +1 more source

Lateralized sound production in the beluga whale (Delphinapterus leucas) [PDF]

Journal of Experimental Biology, 2020
Like other toothed whales, belugas produce sound through pneumatic actuation of two phonic lip pairs, but it is unclear whether both pairs are actuated concurrently to generate a single sound (the dual actuation hypothesis) or laterally in the production of their rich vocal repertoires.
Audra E. Ames, Kristian Beedholm, Peter T. Madsen   +2 more
openaire   +4 more sources

First recorded ice entrapment of a beluga whale (Delphinapterus leucas) in east Greenland

Polar Research
Beluga whales are rare along the coast of east Greenland and the closest recognized stock occurs around Svalbard. Here we report on an ice entrapment of an adult beluga whale (Delphinapterus leucas) in north-east Greenland.
Kristin L. Laidre, Jasmine Ware, Marie Zahn, Peter Hegelund, Jon Aars   +4 more
doaj   +1 more source

Timing is everything: Drivers of interannual variability in blue whale migration. [PDF]

, 2020
Blue whales need to time their migration from their breeding grounds to their feeding grounds to avoid missing peak prey abundances, but the cues they use for this are unknown.
Ballance, Lisa T, Franks, Peter JS, Hildebrand, John A, Ohman, Mark D, Rice, Ally, Szesciorka, Angela R, Širović, Ana   +6 more
core  

Pêches des bélugas, des anguilles et des esturgeons noirs de l’estuaire du St-Laurent

Revue d'ethnoécologie, 2018
This paper presents an ethnographic examination of beluga whale, eel and black sturgeon fisheries, focusing more particularly on their exploitation, commodification and conservation.
Sabrina Doyon
doaj   +1 more source

Sea Ice and Whales from Space: The Feasibility of Using Satellite Imagery for Monitoring Beluga Whales in Winter

Journal of Marine Science and Engineering
Very-high-resolution (VHR) satellite imagery has expanded the scale at which researchers can monitor marine mammals in remote regions and improved monitoring efforts in data-deficient areas.
Jordan B. Stewart, Cortney A. Watt, Amanda M. Belanger, Marianne Marcoux, Bryanna A. H. Sherbo   +4 more
doaj   +1 more source