Results 71 to 80 of about 4,342 (214)
Whales, dolphins, and porpoises of the western North Atlantic: a guide to their identification [PDF]
, 1976 This is an identification guide for cetaceans (whales, dolphins, and porpoises). It was designed to assist laypersons in identifying cetaceans encountered in the western North Atlantic Ocean and was intended for use by ongoing cetacean observer programs.
Caldwell, David K. +4 more
core
Predators and scavengers: Polar bears as marine carrion providers
Oikos, Volume 2026, Issue 1, January 2026.Scavenging is a foraging strategy widely used across the animal kingdom and apex predators provide a large amount of energy in a food web by provisioning carrion. In the harsh environmental conditions of the Arctic, apex predators such as polar bears Ursus maritimus can provide scavenging opportunities for many species. Carrion can act as a buffer when
Holly E. L. Gamblin +5 more
wiley +1 more source
On the significance of tuskless specimens of Dicynodon grimbeeki Broom [PDF]
, 1957 Main articeIt has hitherto been accepted that Dicynodon grimbeeki, a species of the extinct Karroo mammal-like reptiles, possesses canine tusks in the males only. This theory is discussed in detail.
Barry, T. H.
core
Inuit settlement in the Clyde area during “contact-exploration” times (ca. 1820-1895) [PDF]
, 2008 Dans son classique The Central Eskimo (1888), Frank Boas laisse fortement entendre qu’au moment de son périple le plus septentrional, les Inuit utilisaient très peu le littoral de la Terre de Baffin entre la baie Home au nord et le détroit d’Éclipse, qui
Wenzel, George W.
core +1 more source
XVIII. On the tusks of the narwhale [PDF]
Philosophical Transactions of the Royal Society of LondonAbstract The structure of many animals that inhabit the great Northern Ocean, is, even at this day, imperfectly known; this arises from those who have the best opportunities of making such enquiries not being fitted for them, or being too much engaged in pursuits of a different nature.
openaire +1 more source
YOLO‐O: An Improved YOLO‐Based Framework for Vehicle Detection
IET Image Processing, Volume 20, Issue 1, January/December 2026.This study proposes a YOLO‐O model, based on YOLOv7, for improved detection of tiny vehicles on roads. Enhancements like residual networks, Squeeze and Excitation Network (SENet), coordinate attention, and SIoU regression loss boost precision, especially for small objects.
Rabbia Mahum +4 more
wiley +1 more source
Marine Mammal Science, Volume 42, Issue 1, January 2026.ABSTRACT Monitoring live and stranded cetaceans can be expensive and logistically challenging, resulting in knowledge gaps. Very high‐resolution (VHR) optical satellites are considered a potential solution to addressing some of these gaps. Despite success at detecting live and stranded cetaceans, satellites have only been trialed on restricted ...
Penny J. Clarke +8 more
wiley +1 more source
Frontiers in Marine ScienceNarwhal abundance in West Greenland (WG) and East Greenland (EG) was estimated from aerial surveys conducted between 2007 and 2019 at their summer grounds.
R. G. Hansen +2 more
doaj +1 more source
Estimating Narwhal (Monodon monoceros) Age Using Epigenetic Analysis of Skin
Marine Mammal Science, Volume 42, Issue 1, January 2026.ABSTRACT Age is an important parameter to understand species life‐history characteristics. Recently, DNA methylation methods have emerged as innovative tools to estimate the age of marine mammals. Narwhal (Monodon monoceros) epigenetic age estimates were computed using beluga (Delphinapterus leucas), killer whale (Orcinus orca), bowhead (Balaena ...
Cortney A. Watt +10 more
wiley +1 more source
Narwhal (Monodon monoceros) associations with Greenland summer meltwater release
EcosphereClimate change is rapidly transforming the coastal margins of Greenland. At the same time, there is increasing recognition that marine‐terminating glaciers provide unique and critical habitats to ice‐associated top predators.
Kristin L. Laidre +8 more
doaj +1 more source