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  • Books
  • Articles  (13)
  • Pacific herring  (13)
  • California Department of Fish and Game, Marine Resources Region  (13)
  • 2020-2022  (13)
  • 1
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    Biomass estimates of Pacific herring, Clupea harengus pallasi, in California from the 1980-81 spawning ground surveys (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/309 | 8 | 2011-09-29 22:15:35 | 309 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The spawning biomass of Pacific herring in San FranciscoBay and Tomales Bay was estimated to be 65,441 tons and 5,583tons, respectively during the 1980-81 season. This is thehighest estimate to date for San Francisco and continuesa rising trend in abundance. The Tomales Bay population hasfluctuated around an annual mean of 6,000 tons since 1973. (24pp.)
    Keywords: Management ; Fisheries ; Pacific herring ; Clupea harengus pallasi ; Tomales Bay ; San Francisco Bay
    Repository Name: AquaDocs
    Type: monograph
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  • 2
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    Biological characteristics of the catch from 1984-85 Pacific herring, Clupea harengus pallasi, roe fishery in California (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/327 | 8 | 2011-09-29 22:15:10 | 327 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: In Tomales Bay, 5-, 6-, and 7-yr-old herring, Clupea harengus pallasi, composed 75% by number of the 1984-85 season's catch. In San Francisco Bay, 2-, 3-, and 4-yr-old herring composed 82% by number of the roundhaul catch, and 5-, 6-, and 7-yr-old herring composed 68% by number ofthe gill net catch.The percent of 4-yr-old herring increased to a record high level in the San Francisco Bay gill net catch.Recruitment of 2-yr-old herring into the San Francisco Bay roundhaul fishery was excellent, with 2-yr-old herring composing 41% of the catch.The growth rate of herring improved in both Tomales and San Francisco Bays, after the period of poor growth during the recent El Nino, when the weight of herring averaged 20% below normal.(23pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific herring ; Clupea harengus pallasi
    Repository Name: AquaDocs
    Type: monograph
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  • 3
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    Biological characteristics of the catch from the 1986-87 Pacific herring, Clupea harengus pallasi, roe fishery in California (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/334 | 8 | 2011-09-29 22:13:42 | 334 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: In Tomales Bay, 4-, 5-, and 6-yr-old herring, Clupea harengus pallasi, composed 85% by number of the 1986-87 season's catch. In San Francisco Bay, 2-, 3-, and 4-yr-old herring composed 88% of the roundhaul catch, and 4-, 5-, and 6-yr-old herring composed 86% by number of the gill net catch.The age composition of both the Tomales Bay and San Francisco Bay gill net catch has shifted to primarily 4-, 5-, and 6-yr-old herring.Recruitment of 2-yr-old herring into the San Francisco Bay roundhaul fishery was good, with the 1985 yr class composing 37% of the catch.The mean length of herring in the San Francisco Bay roundhaul catch decreased to 174 mm BL, and the mean length of the gill net catch decreased to 194 mm BL. The mean length of the Tomales Bay catch also decreased to197 mm BL.Average weight at age of Tomales Bay herring is below average for the fourth consecutive year. In San Francisco Bay the average weight at age is above average, even though length at age declined slightly. (20pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific herring ; Clupea harengus pallasi
    Repository Name: AquaDocs
    Type: monograph
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  • 4
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    Biological characteristics of the catch from the 1980-81 and 1981-82 Pacific herring (Clupea harengus pallasi) roe fishery in California (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/289 | 8 | 2011-09-29 22:17:28 | 289 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The age and size composition of the 1980-81 and 1981-82herring catch in Tomales and San Francisco Bays have remained relatively stable over the past two seasons. TheTomales Bay gill net catch was dominated by 5-, 6-, and 7-yr-old herring which combined for an average of 76% ofthe catch each season. The San Francisco Bay gill netcatch was dominated by 5- and 6-yr-old herring whichcombined for an average of 62% of the catch over the pasttwo seasons. The average size of herring in the gill netcatch declined in San Francisco Bay due to smaller meshnets employed by fishermen late in the season when largeherring are less abundant. (18pp.)
    Keywords: Fisheries ; Biology ; Pacific herring ; Clupea harengus pallasi
    Repository Name: AquaDocs
    Type: monograph
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  • 5
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    Biomass estimates of Pacific herring, Clupea harengus pallasi, in California from the 1982-83 spawning-ground surveys (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/317 | 8 | 2011-09-29 22:14:09 | 317 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The spawning biomass of Pacific herring, Clupea harenguspallasi, in San Francisco Bay and Tomales Bay was estimatedto be 59,000 tons and 11,200 tons, respectively during the1982-83 season. This represents a 40% decline in SanFrancisco Bay and a 50% increase in Tomales Bay populations.Unusually high ocean temperatures and record rainfall inCalifornia are believed to have affected the distributionand/or survival of herring and caused changes in spawning habits. (26pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific herring ; Clupea harengus pallasi
    Repository Name: AquaDocs
    Type: monograph
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  • 6
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    Biological characteristics of the catch from 1982-83 Pacific herring, Clupea harengus pallasi, roe fishery in California (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/318 | 8 | 2011-09-29 22:14:11 | 318 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The Tomales Bay gill net fishery was dominated by 5-, 6-, and 7-yr-old herring, Clupea harengus pallasi, which combined for 82% of the catch in the 1982-83 season. The San Francisco Bay gill net fishery was dominated by 5- and 6-yr-old herring, which combined for 64% of the catch. The San Francisco Bay roundhaul fishery was dominated by 3-, 4-,and 5-yr-old herring that combined for 72% of the catch. Two-year-olds composed only 14% of the catch in San Francisco Bay, indicating poor recruitment of the 1981 yr class. The mean length of herring in the Tomales Bay catch declined to 208 mm BL, but the mean length of the San Francisco Bay gill net and roundhaul fisheries increasedto 203 mm BL and 183 mm BL, respectively. (13p.)
    Keywords: Management ; Fisheries ; Biology ; Pacific herring ; Clupea harengus pallasi
    Repository Name: AquaDocs
    Type: monograph
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  • 7
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    Biomass estimate of Pacific herring Clupea harengus pallasi, in California from the 1983-84 spawning-ground surveys (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/322 | 8 | 2011-09-29 22:14:45 | 322 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The spawning biomass of Pacific herring, Clupeaharengus pallasi, in San Francisco Bay and Tomales Baywas estimated to be 40 000 tons and 1300 tons, respectivelyduring the 1983-84 season.The San Francisco biomass estimate declined for the second consecutive year and is now 60% below the peak year of 1981-82, when 100 000 tons of herring spawned. In Tomales Bay the population estimate declined 88% from one of the higher estimates the year before, to the lowest estimate recorded.These declines in biomass were not totally unexpected,due to the continued high ocean temperatures offCalifornia during 1983. One of the major contributorsto the decline was the poor growth rate exhibited byindividual herring during 1983. There is also a strong possibility that part of the decline this season was due to a northerly shift in the distribution of California's herring stocks.The ocean temperatures off California returned tonormal in 1984, and both San Francisco Bay and TomalesBay populations are expected to respond in a positivemanner during the year.(32pp.)
    Keywords: Management ; Fisheries ; Pacific herring ; Clupea harengus pallasi
    Repository Name: AquaDocs
    Type: monograph
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  • 8
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    Biomass estimate of Pacific herring, Clupea harengus pallasi, in California from the 1984-85 spawning-ground surveys (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/326 | 8 | 2011-09-29 22:15:08 | 326 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The spawning biomass of Pacific herring, Clupea harengus pallasi, in San Francisco and Tomales Bays was estimated to be 46 000 tons and 6600 tons, respectively, during the 1984-85 season. Biomass increased 15% for San Francisco Bay and 500% for Tomales Bay over those of the previous season.The dramatic increase in the Tomales Bay biomass estimate is attributed to a change in the spawning habits of herring during the 1983-84 season, in which herring did not return to Tomales Bay as expected. This season herring returned to Tomales Bay and the biomass increased, nearly equalingthe long-term average biomass of 6700 tons.In San Francisco Bay, the modest increase of 6000 tons represents the first increase in three seasons.The geographical distribution of herring spawning within San Francisco Bay has changed during the past three seasons. From 1983 to 1985, over 60% of each season's spawning escapement occurred south of Treasure Island. Prior to that, from 1973 to 1982, nearly 80% of the escapement was north of Treasure Island.The monthly distribution of herring spawning has changed little over the course of this study, except from 1980 to 1982 when there was more spawning in December than at any other time. (30pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific herring ; Clupea harengus pallasi
    Repository Name: AquaDocs
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  • 9
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    Biological characteristics of the gill net catch from the 1987-88 Pacific herring, Clupea harengus pallasi, roe fishery in California (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  library@mlml.calstate.edu | http://aquaticcommons.org/id/eprint/352 | 8 | 2013-06-18 20:27:38 | 352 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: In Tomales Bay, 5-, 6-, and 7-yr-old herring, Clupea harengus pallasi, comprised 83% by number of the 1987-88 season's gill net catch.Recruitment of the 1984 yr class (4-yr olds) was relativelypoor, comprising only 11% of the gill net catch by number.In addition, the 1985 yr class comprised 〈1% of the gill netcatch, the weakest showing of 3-yr olds in four seasons.Average length of the Tomales Bay gill net catch increased to 201 mm BL, due to the low numbers of 3- and 4-yr-old herring in the catch.Average weight of 4- through 8-yr-old herring remains belowthe long-term mean and is at the second lowest level in thepast nine seasons.In San Francisco Bay, 4-, 5-, and 6-yr-old herring comprised82% by number of the gill net catch; average length of thecatch increased to 195 mm BL, the first increase in fourseasons.Four strong year classes beginning with 1982 have a positiveimpact on the San Francisco Bay gill net catch characteristics. (17pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific herring ; Clupea harengus pallasi
    Repository Name: AquaDocs
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  • 10
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    Biological characteristics of the catch from 1983-84 Pacific herring, Clupea harengus pallasi, roe fishery in California (2021)
    California Department of Fish and Game, Marine Resources Region | Monterey, CA
    In:  http://aquaticcommons.org/id/eprint/324 | 8 | 2011-09-29 22:15:03 | 324 | California Department of Fish and Game
    Details
    Publication Date: 2021-06-28
    Description: The 1983-84 Tomales Bay and San Francisco Bay gill net catch was dominated by 5-, 6-, and 7-yr-old herring, Clupea harengus pallasi. The dominant age classes in the San Francisco Bay roundhaul catch were 2- and 3-yr-old herring.Good recruitment of the 1982 yr class in SanFrancisco Bay is indicated by the occurrence of 47% 2-yr olds in the roundhaul catch.The mean length of herring in the Tomales Bay gill net catch declined to 199 mm BL, while the mean length of the San Francisco Bay gill net catch increased to 205 mm BL. The mean length of the San Francisco Bay roundhaul catch declined to an all time low of 165 mm BL. The mean weight of all age classes in both Tomales and San Francisco Bays wasat least 20% below long-term mean levels. The herringweight loss in 1983 may have resulted from the poor availability of food caused by the 1982-83 El Nino. (20pp.)
    Keywords: Management ; Fisheries ; Biology ; Pacific herring ; Clupea harengus pallasi
    Repository Name: AquaDocs
    Type: monograph
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