Results 111 to 120 of about 95,512 (346)
Animal BiotelemetryBackground To reduce heat loss underwater, marine mammals cover their bodies with insulation. Cetaceans in particular rely solely on blubber for insulation which has low conductivity.
Kino Sakai +7 more
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Automated extraction of right whale morphometric data from drone aerial photographs
Remote Sensing in Ecology and Conservation, EarlyView.Aerial photogrammetry is a popular non‐invasive method for measuring marine mammal body size, body morphometrics, and body condition, but processing large datasets efficiently remains challenging. We developed a machine learning algorithm using Mask R‐CNN models to automatically measure body morphometrics of southern right whales from aerial ...
Chhandak Bagchi +4 more
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An Economical Custom-Built Drone for Assessing Whale Health
Frontiers in Marine Science, 2017 Drones or unmanned Aerial Vehicles’ (UAVs) have huge potential to improve the safety and efficiency of sample collection from wild animals under logistically challenging circumstances.
Vanessa Pirotta +6 more
semanticscholar +1 more source
Drone photogrammetry reveals contrasting body conditions of dugongs across the Indo‐Pacific
Remote Sensing in Ecology and Conservation, EarlyView.The monitoring of body condition has gained traction as a way to provide early warning signals of population decline, prompting conservation actions. However, the environmental and anthropogenic drivers of body condition variations are rarely investigated.
Camille Goudalier +16 more
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A multivariate mixed hidden Markov model for blue whale behaviour and responses to sound exposure
, 2017 Characterization of multivariate time series of behaviour data from animal-borne sensors is challenging. Biologists require methods to objec-tively quantify baseline behaviour, and then assess behaviour changes in response to environmental stimuli. Here,
S. DeRuiter +6 more
semanticscholar +1 more source
Nature, 1928 I AGREE with Sir Sidney Harmer (NATURE, May 12, p. 748) that as the whale descends its chest is compressed and the density of its body is consequently increased. It is owing to this very fact (that is, its increased density) that the whale has difficulty in regaining the surface after descending to a great depth, and that there is consequently a limit ...
openaire +1 more source
Thermal drone observations capture fine‐scale population decline of short‐tailed shearwaters
Remote Sensing in Ecology and Conservation, EarlyView.Researchers used thermal drone technology to monitor short‐tailed shearwater colonies in Tasmania from 2019 to 2024, discovering a concerning 27% decline in chick numbers during this period. The study estimates that the global population of these seabirds has dropped dramatically by 41% since 1985, falling from 23 million to approximately 13.5 million ...
Jacob Virtue +4 more
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The Cetacean Sanctuary: A Sea of Unknowns
AnimalsHousing cetaceans in netted sea pens is not new and is common for many accredited managed-care facilities. Hence, the distinction between sanctuary and sea pen is more about the philosophies of those who run these sanctuary facilities, the effects of ...
Jason N. Bruck
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Sustainable Development, EarlyView.ABSTRACT As global non‐renewable energy sources depletes, achieving carbon neutrality by 2050 has become an urgent international priority, as outlined in the Paris Agreement. Renewable energy transition demands environmentally sustainable, economically viable, and energy‐efficient innovations.
Wen Han +4 more
wiley +1 more source
XLIII.—On a New-Zealand whale (Physalus antarcticus, Hutton), with notes [PDF]
, 1874 J.E. Gray
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