Deep Machine Learning Techniques for the Detection and Classification of Sperm Whale Bioacoustics
Scientific Reports, 2019 We implemented Machine Learning (ML) techniques to advance the study of sperm whale (Physeter macrocephalus) bioacoustics. This entailed employing Convolutional Neural Networks (CNNs) to construct an echolocation click detector designed to classify ...
P. Bermant +4 more
semanticscholar +1 more source
Lévy Flight Trajectory-Based Whale Optimization Algorithm for Global Optimization
IEEE Access, 2017 The whale optimization algorithm (WOA) has been shown to be powerful in searching for an optimal solution. This paper proposes an improvement to the whale optimization algorithm that is based on a Lévy flight trajectory and called the Lévy flight ...
Ying-Biao Ling +2 more
semanticscholar +1 more source
Evidence of microbial activity from a shallow water whale fall (Voghera, northern Italy) [PDF]
, 2012 The fossil bones, associated carbonate cements and enclosing concretion of a Miocene mysticete from inner shelf deposits (Monte Vallassa Formation, northern Italy) were analyzed for evidence of microbial activity. Optical and scanning electron microscopy,
Cavalazzi, B +5 more
core +4 more sources
Killer whales and whaling: the scavenging hypothesis [PDF]
Biology Letters, 2005 Killer whales (Orcinus orca) frequently scavenged from the carcasses produced by whalers. This practice became especially prominent with large-scale mechanical whaling in the twentieth century, which provided temporally and spatially clustered floating carcasses associated with loud acoustic signals.
Hal Whitehead, Randall Reeves
openaire +2 more sources
Whale counting in satellite and aerial images with deep learning
Scientific Reports, 2019 Despite their interest and threat status, the number of whales in world’s oceans remains highly uncertain. Whales detection is normally carried out from costly sighting surveys, acoustic surveys or through high-resolution images. Since deep convolutional
Emilio Guirado +4 more
semanticscholar +1 more source
Lifetime glucocorticoid profiles in baleen of right whale calves: Potential relationships to chronic stress of repeated wounding by Kelp Gulls [PDF]
, 2018 Baleen tissue accumulates stress hormones (glucocorticoids, GC) as it grows, along with other adrenal, gonadal and thyroid hormones. The hormones are deposited in a linear fashion such that a single plate of baleen allows retrospective assessment and ...
Ajó, Alejandro A. Fernández +7 more
core +1 more source
Advanced Science, EarlyView.The Species Search Engine (KISSE) is a novel statistical approach for identifying species from collagen peptides, using a curated library of sequences and their relative abundances derived from shotgun proteomics. Abstract DNA and bone collagen are two key sources of resilient molecular markers used to identify species from their remains.
Hassan Gharibi +8 more
wiley +1 more source
Migrating eastern North Pacific gray whale call and blow rates estimated from acoustic recordings, infrared camera video, and visual sightings. [PDF]
, 2019 During the eastern North Pacific gray whale 2014-2015 southbound migration, acoustic call recordings, infrared blow detections, and visual sightings were combined to estimate cue rates, needed to convert detections into abundance. The gray whale acoustic
D'Spain, Gerald L +5 more
core +1 more source
Predicting ecology and hearing sensitivities in Parapontoporia—An extinct long‐snouted dolphin
The Anatomical Record, EarlyView.Abstract Analyses of the cetacean (whale and dolphin) inner ear provide glimpses into the ecology and evolution of extinct and extant groups. The paleoecology of the long‐snouted odontocete (toothed whale) group, Parapontoporia, is primarily marine with its depositional context also suggesting freshwater tolerance.
Joyce Sanks, Rachel Racicot
wiley +1 more source
Inexpensive Aerial Photogrammetry for Studies of Whales and Large Marine Animals
Frontiers in Marine Science, 2017 We describe a simple system enabling accurate measurement of swimming marine mammals and other large vertebrates from low-altitude single-frame photogrammetry via inexpensive modifications to a “prosumer” unmanned aerial vehicle (UAV) equipped with ...
Stephen M. Dawson +3 more
doaj +1 more source