Results 31 to 40 of about 18,439 (273)

The new BELUGA setup for collocated turbulence and radiation measurements using a tethered balloon: first applications in the cloudy Arctic boundary layer [PDF]

open access: yesAtmospheric Measurement Techniques, 2019
The new BELUGA (Balloon-bornE moduLar Utility for profilinG the lower Atmosphere) tethered balloon system is introduced. It combines a set of instruments to measure turbulent and radiative parameters and energy fluxes.
U. Egerer   +4 more
doaj   +1 more source

Do beluga whales truly migrate? Testing a key trait of the classical migration syndrome

open access: yesMovement Ecology, 2023
Background Migration enables organisms to access resources in separate regions that have predictable but asynchronous spatiotemporal variability in habitat quality.
L. Storrie   +5 more
semanticscholar   +1 more source

Diet and feeding observations from an unusual beluga harvest in 2014 near Ulukhaktok, Northwest Territories, Canada

open access: yesArctic Science, 2018
The Eastern Beaufort Sea (EBS) beluga (Delphinapterus leucas) population are an important traditional food for the Inuit of the Inuvialuit Settlement Region, Northwest Territories (NT) Canada.
Lisa L. Loseto   +8 more
doaj   +1 more source

Detection and tracking of belugas, kayaks and motorized boats in drone video using deep learning1

open access: yesDrone Systems and Applications, 2022
Aerial imagery surveys are commonly used in marine mammal research to determine population size, distribution and habitat use. Analysis of aerial photos involves hours of manually identifying individuals present in each image and converting raw counts ...
Madison L. Harasyn   +3 more
doaj   +1 more source

Collaborative field research using drones for whale photo-identification studies in Cumberland Sound, Nunavut1

open access: yesDrone Systems and Applications, 2022
In conducting Arctic field research, hiring local field guides has long been a necessity for providing field teams with local knowledge and fundamental needs of boat operation and navigation, general field logistics/safety, and traditional ecological ...
Brent G. Young   +5 more
doaj   +1 more source

Mesoscale habitat use by St. Lawrence estuary beluga over the annual cycle from an acoustic recording network.

open access: yesJournal of the Acoustical Society of America, 2023
The spatial-temporal distribution pattern of St. Lawrence Estuary (SLE) beluga is examined with a passive acoustic monitoring network of 13 stations from June 2018 to October 2021.
Y. Simard   +4 more
semanticscholar   +1 more source

Long Distance Migration of Beluga (Huso huso) and Stellate Sturgeon (Acipenser stellatus) in Lower Danube River in Relation with Iron Gate II Dam

open access: yesBulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca. Animal Science and Biotechnologies, 2018
Construction of the dams in Lower Danube River (LDR- rkm 0 Sulina – rkm 1075 Baziasi) without fish passages, as well as illegal fishery and river bottom modification due to navigation had negative impact on sturgeon’s populations.
Ștefan HONŢ   +5 more
doaj   +1 more source

Beluga whale (Delphinapterus leucas) behaviour in the presence of whale-watching vessels

open access: yesFrontiers in Marine Science, 2023
Beluga whales (Delphinapterus leucas) are social animals that return to the same estuaries each summer season. The Western Hudson Bay belugas in the Churchill River estuary appear to be attracted to boats, resulting in whale-watching being a popular ...
K. Westdal   +4 more
semanticscholar   +1 more source

Improved Beluga Whale Optimization for RFID Network Planning [PDF]

open access: yesJisuanji kexue
With the development of radio frequency identification(RFID) technology,the demand for its application is getting higher and higher,and the research in reader deployment is gradually deepening.In order to solve the RFID reader location planning problem ...
CHEN Yijun, ZHENG Jiali, LI Zhiqian, ZHANG Jiangbo, ZHU Xinghong
doaj   +1 more source

Sturgeon caviar and cardiovascular diseases, Caspian Sea wild and farmed beluga, Huso huso caviar and their lipid quality indices [PDF]

open access: yesCaspian Journal of Environmental Sciences, 2021
The objective was to investigate the detailed information about proximate, fatty acid compositions and lipid quality indices in the caviar of wild and farmed beluga, Huso huso from Iran.
Shahrzad Barimani   +3 more
doaj   +1 more source

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