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  • Fisheries  (46)
  • Aircraft Stability and Control
  • Environment
  • GENERAL
  • Inorganic Chemistry
  • Long Beach, CA  (46)
  • 2020-2023
  • 2020-2022  (46)
  • 1955-1959
  • 1
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    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/290 | 8 | 2011-09-29 22:17:20 | 290 | California Department of Fish and Game
    Publication Date: 2021-06-28
    Description: This report is the first annual report submitted in partialfulfillment of Research Contract No. S-1902 between the Department of Fish and Game and the Pacific Gas and Electric Company. Through this contract the Department of Fish and Game is to conduct a preoperational ecological study to establish a base line inventory of the marine biota with special reference to fish and to abalone,including food chains.This first annual report covers all work from September 1971 through December 1972.This annual report covers the first 18 month period of the project from July 1, 1971 through December 31, 1972. The report includes results (discussion and tables) of our subtidal, intertidal, sportfishery, fish collection, fish food habit, and plankton studies. The quarterly reportfor October 1 to December 31, 1972 is included herein and these data are incorporated in this annual report. (86pp.)
    Keywords: Ecology ; Fisheries ; Biology ; Mendocino Power Plant ; California ; environmental impact
    Repository Name: AquaDocs
    Type: monograph
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  • 2
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    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/196 | 8 | 2011-09-29 22:24:37 | 196 | California Department of Fish and Game
    Publication Date: 2021-06-27
    Description: This report is the fourth quarterly report submitted in partial fulfillment of Research Contract No. S-1902 between the Department of Fish and Game and the Pacific Gas and Electric Company. Through this contract the Department of Fish and Game is to conduct a pre-operational ecological study to establish a base line inventory of the marine biotawith special reference to fish and to abalone, including food chains.Quarterly reports will be followed by annual reports. The first annual report will cover works through December 31, 1972. Full tables and species lists will be included in each annual report. Complete records of observations and measurements are kept in files at the Marine Resources Laboratory, Monterey.
    Description: 14pp.
    Keywords: Ecology ; Fisheries ; Biology ; Mendocino Power Plant ; California ; environmental impact
    Repository Name: AquaDocs
    Type: monograph
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  • 3
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    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/724 | 8 | 2011-09-29 21:38:24 | 724 | California Department of Fish and Game
    Publication Date: 2021-07-02
    Description: Speckled scallops, Argopecten circularis (Sowerby, 1835), were sampled at Agua Hedionda Lagoon, Carlsbad, San Diego County from March 1984 to October 1986, to obtain basic life history data. Monthly samples of scallops were collected, measured, and released to obtain length frequency data for estimates of growth, life span, and spawning period. Subsamples of scallops were collected for determination of gonadal-somatic and adductor muscle-somatic indices.In 1984 large concentrations of speckled scallops were found on the sand-silt bottom of the lagoon, closely associated with eelgrass, Zostra marina. During the course of the study the numbers of scallops declined, until their virtual disappearance at the end of 1986. Monthly length frequency plots from 24,375 scallop measurements indicate that this is a rapidly growing species with a short life span. Gonadal- and adductor muscle-somatic indices from subsamples of 1,714 scallops indicate first spawning at age one and a relationship between temperature and spawning.Based on this study management recommendations are made for the speckled scallop. (39pp.)
    Keywords: Management ; Fisheries ; Biology ; speckled scallop ; Argopecten circularis ; Aqua Hedionda Lagoon ; San Diego ; California
    Repository Name: AquaDocs
    Type: monograph
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  • 4
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    California Department of Fish and Game | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/720 | 8 | 2011-09-29 21:39:31 | 720 | California Department of Fish and Game
    Publication Date: 2021-07-02
    Description: Red abalone, Haliotis rufescens, were collected at Johnsons Lee, Santa Rosa Island, in the summers of 1978 through 1982, and in 1984, to obtain data for determining various fishery population parameters. Annual visits to the study site were made at yearly intervals to simplify growth calculations.During the first four visits, 2145 red abalones were tagged,measured, and replaced. Shell damage, soft tissue injuries, and causes of mortality were noted. The method of tagging isdescribed.Recovery of first tagged abalone after one year was approximately 30%. Analysis of variance of the annual samples indicated that the samples were, with one exception, not different. Summaries are presented of the number of abalone collected and tagged by year, frequencies of shell damage, soft tissue injury, predatory sponge infestation, and total mortality. Appendices include a listing of the raw size data and various codes for each tagged abalone. (56pp.)
    Keywords: Management ; Fisheries ; Biology ; Red abalone ; Haliotis rufescens ; Santa Roas Island ; California
    Repository Name: AquaDocs
    Type: monograph
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  • 5
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    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/843 | 8 | 2011-09-29 21:32:17 | 843 | California Department of Fish and Game
    Publication Date: 2021-07-03
    Description: (2pp.)
    Keywords: Management ; Fisheries ; Biology ; R/V Kelp Bass ; Catalina Island ; Palos Verdes Peninsula ; California ; Giant kelp ; Macrocystis sp.
    Repository Name: AquaDocs
    Type: monograph
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  • 6
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    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/15 | 8 | 2011-09-29 22:41:18 | 15 | California Department of Fish and Game
    Publication Date: 2021-06-25
    Description: The catch landed and effort expended by private-boatsport fishermen was studied in Los Angeles Countybetween October and December 1980, in order todetermine the impact of one segment of the sportfishery on local marine resources. Fishermenreturning from fishing trips were interviewed atlaunch ramps, hoists, and boat rental facilities.This report contains quantitative data and statisticalestimates of total effort, total catch, catch ofpreferred species, and length frequencies for thosespecies whose catches are regulated by minimum sizelimits.An estimated 94,000 organisms were landed by 22,000anglers and 1,200 divers. The major components of thecatch were Pacific mackerel, Scomber japonicus, 29,000landed; white croaker, Genyonemus lineatus, 17,500landed; and Pacific bonito, Sarda chiliensis, 11,500landed. These three species comprised two-thirds ofthe total catch.Anglers' compliance with size limit regulations wasvariable. Nearly 80% of all measured bass, Paralabraxspp., were legal size, but only 50% of the Californiahalibut, Paralichthys californicus, were legal size.Divers showed much better compliance with the sizelimit regulations: 96% of all California spinylobsters, Panulirus interruptus, were legal size. (14pp.)
    Keywords: Management ; Fisheries ; marine species ; recreational fishing ; fish size ; anglers ; divers
    Repository Name: AquaDocs
    Type: monograph
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  • 7
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    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/17 | 8 | 2011-09-29 22:41:25 | 17 | California Department of Fish and Game
    Publication Date: 2021-06-25
    Description: Despite efforts to manage it, the California barracuda,Sphyraena argentea, resource has exhibited a marked declinein abundance from levels exhibited prior to 1950. This paperpresents a history of the California barracuda fisheries, asummary of its life history and population dynamics; and anevaluation of the resource under current management practices and recommendations for improvements in current management.Evaluation of the current status of the resource indicatesits abundance off southern California is low but slowlyimproving with a marked improvement in size composition.Management recommendations, when adopted, should help increase the rate of recovery of the California barracuda resource. (73pp.)
    Keywords: Management ; Fisheries ; Biology ; California barracuda ; Sphyraena argentea ; fisheries ; California
    Repository Name: AquaDocs
    Type: monograph
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  • 8
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    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/19 | 8 | 2011-09-29 22:41:33 | 19 | California Department of Fish and Game
    Publication Date: 2021-06-25
    Description: A 1-yr. study was undertaken to devise a sampling programwhich would determine fishing catch and effort levels ofone segment of the southern California marine sportfishery. Personal interviews of fishermen were conductedat launch ramps, boat hoists, and boat rental locationsfrom Santa Barbara County to the Mexican border. Thisreport presents quantitative data and statisticalestimates of effort, total catch, catch of preferredsport fish species, and length frequencies of selectedspecies landed by private-boat sport fishermen.An estimated 55,000 anglers and 3,300 divers landed 182,000fishes, molluscs, and crustaceans. The major componentsof the catch were 1) rockfishes, Sebastes spp., 73,000landed; 2) white croaker, Genyonemus lineatus, 28,000landed; 3) bass, Paralabrax spp., 15,000 landed; and4) Pacific bonito, Sarda chiliensis, 12,000 landed. (22pp.)
    Keywords: Management ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
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  • 9
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    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/18 | 8 | 2011-09-29 22:41:28 | 18 | California Department of Fish and Game
    Publication Date: 2021-06-25
    Description: A 1-yr. study was undertaken to devise a sampling programwhich would determine fishing catch and effort levels ofone segment of the southern California marine sportfishery. Personal interviews of fishermen were conductedat launch ramps, boat hoists, and boat rental locationsfrom Santa Barbara County to the Mexican border. Thisreport presents quantitative data and statistical estimatesof effort, total catch, catch of preferred sport fishspecies, and length frequencies of selected specieslanded by private-boat sport fishermen.An estimated 102,000 anglers and 3,700 divers landed 275,000fishes, molluscs, and crustaceans. The major componentsof the catch were 1) white croaker, Genyonemus lineatus,85,000 landed; 2) bass, Paralabrax spp., 48,000 landed; and3) Pacific bonito, Sarda chiliensis, 42,000 landed. (22pp.)
    Keywords: Management ; Fisheries
    Repository Name: AquaDocs
    Type: monograph
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  • 10
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    California Department of Fish and Game, Marine Resources Region | Long Beach, CA
    In:  http://aquaticcommons.org/id/eprint/10 | 8 | 2011-09-29 22:40:55 | 10 | California Department of Fish and Game
    Publication Date: 2021-06-25
    Description: Anglers frequently violate sport fishing regulations out ofignorance, by mistake, or by deliberate action. To determinewhether unfamiliarity with the regulations plays a major part in this problem, we asked anglers on privately-owned,trailerable boats at launch ramps and boat hoists a series of questions which tested their knowledge of the regulations.We found that on any winter weekend about 30% of the anglerson private-boats knew none of the size limits, 50% knew atleast three of the six size limits, and 4% knew all of thesize limits. Only about 25% of the anglers kept a copy ofthe regulations on their boats for reference when fishing.The results of the survey indicate that greater effort mustbe expended to familiarize sport fishermen with the fishingregulations. (9pp.)
    Keywords: Management ; Fisheries ; recreational fishing ; fish size ; anglers ; regulations
    Repository Name: AquaDocs
    Type: monograph
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