Results 11 to 20 of about 267 (147)
A Modern Ghost Story: Increased Selective Mortality of Salmon Under Climate Extremes. [PDF]
Glob Chang BiolWe tracked nine cohorts of Chinook salmon (Oncorhynchus tshawytscha) from California's American River across their life cycle, using otolith and eye lens isotope analysis to identify the habitats and river conditions associated with the greatest losses of early migrants.
Sturrock AM +9 more
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Engineering calculation of a midwater fishing trawl
Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mekhanika, 2023 This paper presents a method for calculating the power and geometric properties of a midwater fishing trawl, which is a complicated engineering structure made up of tied flexible (threads, ropes, flap) and rigid (rigging, trawl boards) elements. A computational model, the functional relations for internal forces and geometric characteristics of the ...
Aleksey O. Razhev, Aleksandr A. Nedostup
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Stocks and fishery of cod (Gadus macrocephalus, Gadidae) in the northwestern Bering Sea in 1965–2022
Известия ТИНРО, 2023 For pacific cod in the northwestern Bering Sea, biomass of the summer-fall feeding aggregations in the specified area of their highest density (polygon) is considered as a stock unit.
A. B. Savin
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Brazilian Journal of Biology, 2021 This study was conducted to estimate the diversity and the occurrence of commercially important finfish species collected by twenty fish sampling site of Sindh and Baluchistan coasts of the Arabian Sea in Pakistan from January to December 2019 ...
H. Ul-Hassan +12 more
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Exploration of the “larval pool”: development and ground-truthing of a larval transport model off leeward Hawai‘i [PDF]
PeerJ, 2016 Most adult reef fish show site fidelity thus dispersal is limited to the mobile larval stage of the fish, and effective management of such species requires an understanding of the patterns of larval dispersal.
Johanna L.K. Wren, Donald R. Kobayashi
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California Fish and Wildlife Journal, 2020 Historically, the native mysid Neomysis mercedis was a key source of food for fish in the San Francisco Estuary (SFE). Following the introductions of the over-bite clam and many invasive zooplankton species in the mid-1980s, populations of native ...
Michelle Avila, Rosemary Hartman
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Development of a new midwater sampling trawl
Fisheries science, 2002 To collect he pelagic larval and juvenile fish, several kinds of midwater trawling gear have been developed.1-4) A common disadvantage of these trawls is that depth of the net changes greatly by the towing speed. In order to overcome the disadvantages of these sampling trawls, Hu et al.
HU, FUXIANG +3 more
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Известия ТИНРО, 2020 Fishery at the northwestern Okhotsk Sea coast is analyzed for the period from 2000 to 2019. Pacific herring, saffron cod, pacific cod, capelin, flounders (Limanda aspera, Pleuronectes quadrituberculatus and Platichthys stellatus), and smelts (Hypomesus ...
V. P. Ovsyannikov
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DEVELOPMENT AND TESTING OF ALGORITHM FOR CALCULATION OF OPERATING PARAMETERS OF TRAWLING SYSTEMS
Известия ТИНРО, 2019 Numerical model of trawling system is developed on the base of equilibrium principle, using F.I. Baranov’s scheme of its power and geometric parameters interdependence.
E. A. Zakharov +2 more
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Midwater Trawling Studies in the North Pacific1 [PDF]
Limnology and Oceanography, 1959 A modified version of the Isaacs‐Kidd midwater trawl was used for 149 exploratory hauls in the Northeastern Pacific at depths ranging from 20 to 250 meters. Catches are discussed in terms of such factors as diurnal migration, seasonal variation, patchiness, and geographic variation.There was wide difference between day and night hauls.
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