Results 91 to 100 of about 4,290 (197)

A Narwhal in the Thames Estuary [PDF]

open access: yesNature, 1949
THE recent stranding of a narwhal (Monodon monoceros) at Rainham, Essex, is a record of considerable interest. This species is usually limited to Arctic waters, although it occasionally penetrates into the North Sea. The infrequency of its occurrence off the British coast may be gauged by the fact that since 1588, when one was found on the coast of ...
openaire   +1 more source

Ethical ecotourists: the narwhal dilemma revisited [PDF]

open access: yesJournal of Ecotourism, 2010
Studying the ethical philosophies of individual travellers is a valid field of research, but there are practical difficulties in defining an industry subsector in terms of the intentions of its customers. Concerns over the conservation of endangered species may conflict with equally principled concerns over the rights and responsibilities of Indigenous
openaire   +2 more sources

Temporal and spatial distributions of delphinid species in Massachusetts Bay (USA) using passive acoustics from ocean gliders [PDF]

open access: yes, 2019
© The Author(s), 2020. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Silva, T. L., Mooney, T. A., Sayigh, L. S., & Baumgartner, M. F.
Baumgartner, Mark F.   +3 more
core   +1 more source

Report of the workshop on age estimation in beluga: Beaufort, North Carolina, US 5-9 December 2011

open access: yesNAMMCO Scientific Publications, 2016
A workshop convened by C. Lockyer and A. A. Hohn to examine variation among readers in estimating beluga ages was held in Beaufort, North Carolina, US. Terms of Reference for the workshop included the following: 1.
Christina Lockyer   +3 more
doaj   +1 more source

Studies of the inner shelf and coastal sedimentation environment of the Beaufort Sea from ERTS-A [PDF]

open access: yes
The author has identified the following significant results. Shearing periodically occurs between the westward moving pack ice (3 to 10 km/d) within the Pacific Gyre and the fast ice along the coast, forming major grounded shear and pressure ridges ...
Barnes, P. W.   +3 more
core   +1 more source

Seismo-Stratigraphy and Sedimentology of Holocene Sediments off Grande Rivière de la Baleine, Southeastern Hudson Bay, Québec [PDF]

open access: yes, 1993
The regional distribution of Holocene sediments of eastern Hudson Bay off the Grande Rivière de la Baleine mouth was mapped using a grid of reflection seismic lines (approximately 300 km long and covering an area of approximately 800 km2) and data from 7
d’Anglejan, Bruno   +2 more
core   +1 more source

Space‐use strategies drive diet composition of Baffin Bay polar bears

open access: yesEcosphere
Polar bears (Ursus maritimus) depend on sea ice to hunt their ice‐associated prey. However, climate‐induced sea ice loss is leading to changes in space‐use strategies of polar bears, with bears in some subpopulations spending more time on land or ...
Jennifer H. Stern   +4 more
doaj   +1 more source

Research highlight: how to cage a unicorn—confining light in a tiny volume

open access: yeseLight
Overcoming the diffraction limit in optics is challenging and demands a profound understanding of light behavior under extreme confinement. The newly developed framework, termed singulonics, demonstrates the formation of sub-diffraction limit narwhal ...
Jacob B. Khurgin
doaj   +1 more source

Singulonics: narwhal-shaped wavefunctions for sub-diffraction-limited nanophotonics and imaging

open access: yeseLight
The diffraction limit, rooted in the wave nature of light and formalized by the Heisenberg uncertainty principle, imposes a fundamental constraint on optical resolution and device miniaturization.
Wen-Zhi Mao, Hong-Yi Luan, Ren-Min Ma
doaj   +1 more source

Evidence of a narwhal (Monodon monoceros) summer ground in Nares Strait

open access: yesPolar Research
Our limited knowledge of the marine mammal fauna in northernmost Greenland and Canada, specifically north of 80°N, relies largely on opportunistic observations collected during expeditions with different objectives.
Mads Peter Heide-Jørgensen   +3 more
doaj   +1 more source

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