Results 11 to 20 of about 586,867 (241)

Evaluating the use of stable isotope analysis to infer the feeding ecology of a growing US gray seal (Halichoerus grypus) population. [PDF]

open access: yesPLoS ONE, 2018
Gray seals (Halichoerus grypus) have been rapidly recolonizing the Northeast US coast, eliciting concern from the fishing industry. However, the ecological effect of this recovery is still unknown and as such, research is needed to better understand how ...
Jacob E Lerner   +5 more
doaj   +2 more sources

Rising competition among North Sea mammalian top predators: a multi-method perspective on trophic ecology [PDF]

open access: yesScientific Reports
Top predators are crucial in shaping ecosystem dynamics by regulating key processes such as prey populations, energy transfer, and community structure, particularly in systems where multiple species compete for the same resources.
Eileen Heße   +7 more
doaj   +2 more sources

Seal whisker-inspired fully printed MEMS flow sensor via micron-scale soft material additive manufacturing [PDF]

open access: yesMicrosystems & Nanoengineering
Seals are renowned for their exceptional ability to hunt, a capability attributed to the uniquely evolved whisker morphology that suppresses vortex-induced vibrations and enables them to track hydrodynamic trails in the water.
Engincan Tekin   +2 more
doaj   +2 more sources

Attachment Patterns of Avian Influenza H5 Clade 2.3.4.4b Virus in Respiratory Tracts of Marine Mammals, North Atlantic Ocean [PDF]

open access: yesEmerging Infectious Diseases
Highly pathogenic avian influenza A(H5N1) clade 2.3.4.4b virus infections have caused substantial mortality events in marine mammals in recent years.
Syriam Sooksawasdi Na Ayudhya   +6 more
doaj   +2 more sources

Design and performance analysis of a novel face gas seal [PDF]

open access: yes, 2006
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The scope of this work carried two objectives, each focusing on theoretical model development, performance prediction and experimental evaluation of two ...
Roberts-Haritonov, Lev
core   +7 more sources

Assessing grey seal (Halichoerus grypus) diet in western Scotland [PDF]

open access: yes, 2008
Grey seal diet was last comprehensively studied in western Scotland in 1985. Since then, the grey seal population has increased by approximately 30% and relative abundance of fish stocks in the area has changed markedly.
Harris, R.N.
core   +2 more sources

Behavioral evidence of thermal stress from overheating in UK breeding gray seals [PDF]

open access: yes, 2002
Gray seals (Halichoerus grypus) in the UK exhibit clear preferences for pupping close to pools of water on inland breeding sites. The reasons for this are unclear as seals are thought to derive all their water requirements from the metabolism of fat ...
Redman, P.   +11 more
core   +1 more source

A Community Science Approach to Conservation Challenges Posed by Rebounding Marine Mammal Populations: Seal-Fishery Interactions in New England

open access: yesFrontiers in Conservation Science, 2021
Between 1880–1962, gray and harbor seals were targeted in legal seal bounty hunts across Maine and Massachusetts due to a perceived competition with commercial fisheries.
Andrea Bogomolni   +4 more
doaj   +1 more source

Investigation of the ability of gray seals to differentiate composite audio signals

open access: yesVestnik MGTU, 2019
Technogenic noise pollution of the seas and oceans has a significant impact on the physiology and behavior of marine mammals. The ability of gray seals to memorize and differentiate complex acoustic signals with similar amplitude-frequency ...
Y. V. Litvinov , M. V. Pakhomov
doaj   +1 more source

Pathological findings in stranded harbor porpoises (Phocoena phocoena) with special focus on anthropogenic causes

open access: yesFrontiers in Marine Science, 2022
Humans impact natural systems at an unprecedented rate. The North Sea is one of the regions in the world with the highest levels of anthropogenic activity.
Lonneke L. IJsseldijk   +9 more
doaj   +1 more source

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