Results 51 to 60 of about 29,835 (222)

Non‐Physical Barrier Design and Environmental Conditions Alter Routing and Survival of Juvenile Chinook Salmon (Oncorhynchus tshawytscha) in the Sacramento‐San Joaquin River Delta

open access: yesRiver Research and Applications, EarlyView.
ABSTRACT Pacific salmon face substantial challenges when migrating through anthropogenically modified river systems, such as the Sacramento‐San Joaquin River Delta (the Delta). Non‐physical behavioral barriers, such as the bioacoustic fish fence (BAFF), are one potential solution for guiding fish away from hazards without obstructing water flow ...
Maggie Raboin   +2 more
wiley   +1 more source

Passive Acoustic Monitoring and Deep Learning Reveal a Lag From Rainfall to Gibbon Song Across a Mosaic Forest Landscape. [PDF]

open access: yesEcol Evol
We deployed passive acoustic monitoring across three forest types in Central Kalimantan, Indonesia, and applied a pretrained deep learning automated detector to identify 83,956 Bornean white‐bearded gibbon (Hylobates albibarbis) great call vocalisations over 18 months.
Owens AF   +9 more
europepmc   +2 more sources

Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu   +5 more
wiley   +1 more source

Parselmouth for bioacoustics: automated acoustic analysis in Python [PDF]

open access: yes
Bioacoustics increasingly relies on large datasets and computational methods. The need to batch-process large amounts of data and the increased focus on algorithmic processing require software tools.
Jadoul Y., de Boer B., Ravignani A.
core   +3 more sources

Automatic large-scale classification of bird sounds is strongly improved by unsupervised feature learning [PDF]

open access: yes, 2014
Automatic species classification of birds from their sound is a computational tool of increasing importance in ecology, conservation monitoring and vocal communication studies.
Plumbley, Mark D.   +6 more
core   +1 more source

Quantifying Migratory Bat Movements in Central Europe Across Seasons and Years Using a Vertical‐Looking Radar

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Vertical‐looking radar provides a first multi‐year analysis of migratory bat phenology in Europe. Bat activity was lowest in winter, increased from spring, and peaked in summer, with similar timing of pre‐ and post‐maternity migrations across years.
Silvia Giuntini   +5 more
wiley   +1 more source

Vocal complexity in the long calls of Bornean orangutans [PDF]

open access: yesPeerJ
Vocal complexity is central to many evolutionary hypotheses about animal communication. Yet, quantifying and comparing complexity remains a challenge, particularly when vocal types are highly graded.
Wendy M. Erb   +5 more
doaj   +2 more sources

Long-Distance Counter Calling in Maned Wolves: Friends or Foes?

open access: yesAnimals, 2022
Maned wolves (Chrysocyon brachyurus) are monogamous and display biparental care for their young, although adults rarely spend time in close proximity. To better understand vocal interactions of maned wolves over long-distances, we passively recorded >10 ...
Luane S. Ferreira   +7 more
doaj   +1 more source

Multi‐Platform Deployments of Low‐Cost Devices for Cetacean Passive Acoustic Monitoring

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
Recent advances in affordable, user‐friendly devices offer new opportunities to overcome cost constraints of underwater passive acoustic monitoring (PAM) and expand acoustic data collection. In this study, we deployed low‐cost acoustic recorders and underwater cameras across a range of platforms in the Western Mediterranean, including fishing gear ...
Greta Jankauskaite   +8 more
wiley   +1 more source

The ultrasonic nonlinearity parameter for biological media

open access: yesArchives of Acoustics, 2015
The nonlinearity parameter B/A of several soft tissues was measured using two independent methods. The B/A values of most soft tissues were found to be between 7 and 8, with the exception of fat which has a B/A value close to 11.
F. DUNN, W. K. LAW, L. A. FRIZZELL
doaj  

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