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The subpopulation problem in Pacific sardine, revisited
NOAA technical memorandum NMFS-SWFSC ...Craig, Matthew T. +4 more
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Re-evaluation of the environmental dependence of Pacific sardine recruitment
Fisheries Research, 2019Abstract The environment influences the recruitment of small pelagic fishes, so environmental indices are used to match fishing mortalities to the stocks’ productivities. For example, the exploitation fraction for the northern stock of Pacific sardine in the Northeastern Pacific is a function of sea-surface temperature (SST).
Juan P. Zwolinski, David A. Demer
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Vital Statistics of the Pacific Sardine (Sardinops Caerulea) and the Population Consequences
Ecology, 1967The population parameters of the Pacific sardine are estimated from growth, mortality, and fecundity data, together with the increase per generation Ro estimated by fitting the Ricker equation. Ro is 4.01, rm is .388 and generation, T, is 401 yr. The estimation of these parameters for a large natural population (equilibrium level about 2.4 x 106 tons ...
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Status of the spawning biomass of the Pacific sardine, 1983-84
2021State law provides for the initiation of a fishery for Pacific sardines, Sardinops sagax caeruleus, when the spawning biomass of sardines reaches 20,000 short tons. Data from ichthyoplankton surveys, sea survey cruises, the mackerel fishery sampling program, and the live-bait fishery monitoring program are discussed with regard to an increase in ...
Klingbeil, Richard A., Wolf, Patricia
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The status of the Pacific sardine resource and its management
2021The Pacific sardine fishery has declined from a catch ofalmost 8 hundred-thousand tons in the nineteen thirties torelative insignificance at present. This decline was primarilydue to the decline of the northern subpopulation.Scientists feel that the only remedial measure which wouldbe effective is a complete ban on sardine fishing in California and ...
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Status of the Pacific sardine (Sardinops sagax) resource and fishery
2021California Fish and Game Code states that the annual sardine quota can be set at a level greater than 1,000 tons, providing that the level of take allows for continued increase in the spawning population. The primary goal of management as directed by the Code is rehabilitation of theresource, with an added objective of maximizing the sustained harvest ...
Barnes, J. Thomas +2 more
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Pacific Sardine Rebuilding Analysis Based on the 2020 Stock Assessment
2021NOAA-TM-NMFS-SWFSC ...
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Status of the spawning biomass of the Pacific sardine, 1982-83
2021State law provides for the initiation of a fishery forPacific sardines, Sardinops sagax caeruleus, when thespawning biomass of sardines reaches 20,000 short tons.Data from ichthyoplankton surveys, sea survey cruises,the mackerel fishery sampling program, and the live baitmonitoring program are discussed with regard to an increasein population size.
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Stock assessment of Pacific sardine for 1998 with management recommendations for 1999
2021The primary goal of sardine management as directed by the California Fish and Game Code is rehabilitation of the resource with an added objective of maximizing sustained harvest. Accordingly, the Code states that the annual sardine quota can be set at an amount greater than1,000 tons, providing that the level of take allows for continued increase in ...
Hill, Kevin T. +4 more
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Status of the spawning biomass of the Pacific sardine, 1974-75
2021In order to initiate a fishery for the Pacificsardine, Sardinops sajax caeruleus, it is requiredthat the spawning biomass be determined to havereached a minimum of 20,000 short tons. Data fromichthyoplankton surveys, night-light surveys, theanchovy bait fishery and jack mackerel purse seinefishery are analyzed for evidence of an increase in the ...
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