Results 91 to 100 of about 19,805 (300)

Catalog of Chinook Salmon Spawning Areas in Yukon River Basin in Canada and United States

open access: yes, 2017
Chinook Salmon Oncorhynchus tshawytscha return to the Yukon River in northwestern North America each summer, migrating to spawning destinations from the lower river to more than 3,000 km upstream.
Randy J. Brown   +3 more
core   +1 more source

Revealing the Resonant Physics of Open Photonic Time Crystals

open access: yesLaser &Photonics Reviews, EarlyView.
ABSTRACT Photonic time crystals (PTCs) are media whose permittivity is modulated periodically in time, enabling momentum bandgaps and parametric amplification of light. Their realization at the nanoscale can revolutionize the study of light‐matter interactions.
Adrià Canós Valero   +5 more
wiley   +1 more source

Comparing the coarse- and high-resolution horizontal and vertical egg distribution patterns of three clupeiform species in the southern Benguela ecosystem

open access: yes, 2003
Bibliography: leaves 122-159.Three fish species, anchovy Engraulis encrasicolus, sardine Sardinops sagax and round herring Etrumeus whiteheadi, co-exist over the western Agulhas Bank (W AB) in the southern Benguela upwelling ecosystem.
Dopolo, Mbulelo Tomie
core  

Spawning and nursery areas of Decapterus macarellus: siting pelagic fisheries marine protected area (MPA) in the Sulawesi Sea, Indonesia

open access: yesFrontiers in Marine Science
IntroductionIdentifying spawning and nursery areas for exploited fish stocks is crucial for sustainable fisheries management, as these areas support fish reproduction and early development necessary for maintaining healthy fish populations.
Amehr Hakim   +19 more
doaj   +1 more source

Efficient and Tunable Narrowband Second‐Harmonic Generation by a Large‐Area Etchless Lithium Niobate Metasurface

open access: yesLaser &Photonics Reviews, EarlyView.
An etchless lithium niobate (LN) metasurface with a slanted periodic TiO2 grating enables efficient and narrowband second‐harmonic generation (SHG) thanks to the light confinement in the LN film granted by quasi‐bound‐state‐in‐the‐continuum (q‐BIC) modes.
Yaping Hou   +10 more
wiley   +1 more source

Dhu they or don't they? A study of sound production by three fish species of commercial and recreational importance in Western Australia

open access: yes, 2012
Over 800 species of fish produce sound, for a variety of reasons including distress, spawning and agonistic behaviour. An increasing number of sparids have been shown to be soniferous, but while studies of glaucosomatids (pearl perches) have shown the ...
Lewis, Paul   +11 more
core   +1 more source

Stock recovery, spawning period and spawning area expansion of the twaite shad Alosa fallax in the Elbe estuary, southern North Sea

open access: yesEndangered Species Research, 2013
After a serious decline in the past, some twaite shad Alosa fallax populations have significantly recovered during the last decade. Although increasing numbers of the species occur in areas of the southern North Sea, detailed quantitative analyses have ...
V Magath, R Thiel
doaj   +1 more source

Ion Activation Methods for Top‐Down Proteomics

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT Mass spectrometry (MS) has emerged as a premier method used to characterize the sequences of proteins. Top‐down proteomics aims to capture the multiple sources of structural diversity reflected in proteins, such as those that arise from alternative RNA splicing events or the addition of post‐translational modifications. Tandem MS (i.e., MS/MS)
Jada N. Walker, Jennifer S. Brodbelt
wiley   +1 more source

Are Norwegian fjords important spawning areas for anglerfish (Lophius piscatorius)? [PDF]

open access: yes, 2007
The knowledge about anglerfish spawning in the northeastern Atlantic is limited. Mature females are rarely seen in the major commercial fisheries within the area, and the general perception has been that the main spawning takes place at great depths west
Asplin, Lars, Bjelland, Otte
core  

Swimming Upriver? Exploring the Sources of Freshwater and Marine Fish in Military Diet in Sixteenth‐ to Nineteenth‐Century Northeastern North America

open access: yesInternational Journal of Osteoarchaeology, EarlyView.
ABSTRACT Atlantic cod were caught in large numbers and shipped from fishing stations in North America to Europe and the Caribbean, and this has been frequently studied zooarchaeologically; however, the exchange of cod and other fish into interior North America has received less study.
Martin H. Welker   +2 more
wiley   +1 more source

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