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A simulation study of the method of deriving natural mortality rate using data for Champsocephalus gunnari in Subarea 48.3
Champsocephalus gunnari in Subarea 48.3 Abstract / Description: A method of determining the rate of natural ... been correctly chosen. Data for Champsocephalus gunnari in Subarea 48.3 are used to show that the ... described method is sound. When a mistake is made in the choice of natural mortality coefficient, the ... estimate of the intercept of the regression is other than zero. A bias in the intercept will be positive if ... DERIVING NATURAL MORTALITY RATE USING DATA FOR CHAMPSOCEPHALUS GUNNARI IN SUB AREA 48.3 P.S. Gasyukov ... correctly chosen. Data for Champsocephalus gunnari in Subarea 48.3 are used to show that the described ... method is sound. When a mistake is made in the choice of natural mortality coefficient, the estimate of ... the intercept of the regression is other than zero. A bias in the intercept will be positive if the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 69–83 : Autor(es): Gasyukov, P.S. and R.S. Dorovskikh
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Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3
Paper Title: Remarks on the natural mortality of Dissostichus eleginoides in Subarea 48.3 ... (1989) from the data obtained during the Chilean longline fishery in Subarea 48.3 (N = 7 848. The von ... : fishing site, fishing depth and hook type. It was determined that there were no significant differences in ... differences in M between fishing sites. On the other hand, when comparing various mean values of M for the ... Chilean longline fishery in Subarea 48.3 (N = 7 848). The von Bertalanffy growth parameters obtained ... type. It was determined that there were no significant differences in M estimated by fishing depth ... and hook type with different growth parameters although there were differences in M between fishing ... a la longitud L' y mayores. • Robson and Chapman (1961) M(= Z) = In(1+~) t-t' 23 donde, t ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 21–30 : Autor(es): Moreno, C.A. and P.S. Rubilar
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Commercial fishing vessels as research vessels in the Antarctic – requirements and solutions exemplified with a new vessel
Paper Title: Commercial fishing vessels as research vessels in the Antarctic – requirements and ... in the ecosystems of the Antarctic region require a precautionary approach with respect to the human ... use of these ecosystems. In particular, resource harvesting requires enough basic knowledge, as well ... the potential of using commercial fishing vessels to bridge the gap in research vessel capacity. The ... The Antarctic region is vulnerable to human activity. In particular, under the impact of global ... ., 2013). Krill plays a key role in Antarctic marine ecosystems (Siegel, 2010). The combined impact of ... . 21 (2014): 11–17 11 CommerCIal fIshIng vessels as researCh vessels In the antarCtIC ... presently seen in the ecosystems of the Antarctic region require a precautionary approach with respect to ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 11–17 : Autor(es): Godø, O.R., C. Reiss, V. Siegel, J.L. Watkins
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Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea 48.2) during 1989/90
Paper Title: Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea ... fishing ground off the northwestern tip of Coronation Island. CPUE showed variability with a minimum in ... November (3.2 tonnes/hour) and maximums in February and March (9.6 tonnes/hour and 11.0 tonnes/hour ... topographically-induced effects. Except in November 1989, temporally and spatially sustained fishable krill ... THE SOVIET KRILL FISHING FLEET IN THE SOUTH ORKNEYS AREA (SUBAREA 48.2) DURING 198911990 V.A ... minimum in November (3.2 tonnes/hour) and maximums in February and March (9.6 tonnes/hour and 11.0 tonnes ... islands together with topographically-induced effects. Except in November 1989, temporally and spatially ... period the commercial fleet fished over oceanic areas, and targeted krill aggregations found in the ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 51–62 : Autor(es): Sushin, V.A
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Assessments of the stocks of Notothenia rossii marmorata and Champsocephalus gunnari in the South Georgia area
in the South Georgia area Abstract / Description: The stocks of Notothenia rossii marmorata and ... Champsocephalus gunnari in the South Georgia area are assessed using USSR age sample data and recent biomass ... estimates from surveys by the FRG. These data indicate that the stock of N. rossii in 1985 was about 2.5% of ... NOTOTHENIA ROSSII MARMORATA AND CHAMPSOCEPHALUS GUNNARI IN THE SOUTH GEORGIA AREA J.G. Cooke (IUCN ... ) Abstract The stocks of Notothenia rossii marmorata and Champsocephalus gunnari in the South Georgia area ... data indicate that the stock of N. rossii in 1985 was about 2.5% of its pre-exploitation biomass ... NOTOTHENIA ROSSII MARMORATA AND CHAMPSOCEPHALUS GUNNARI IN THE SOUTH GEORGIA AREA Justin G. Cooke ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 1-21 : Autor(es): Cooke, J.G.
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Modelling variability and estimating power to detect change in Adélie penguin fledgling weights
Paper Title: Modelling variability and estimating power to detect change in Adélie penguin ... fledgling weights Abstract / Description: Statistical models of variation in Adélie penguin fledgling ... weight data were used to examine the power to detect a change in fledgling weights after an impact. The ... the number of birds weighed in each five-day period from 50 to 30 without substantial loss of power ... Modelling variability and estiMating power to detect change in adélie penguin fledgling weights L.M ... Abstract Statistical models of variation in Adélie penguin fledgling weight data were used to examine the ... power to detect a change in fledgling weights after an impact. The statistical models were developed ... this possibility. Modelling also indicated the potential for reducing the number of birds weighed in ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 191–200 : Autor(es): Emmerson, L.M., C. Southwell and J. Clarke
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Standardization of fishing effort for Champsocephalus gunnari in the South Georgia area (Subarea 48.3)
Paper Title: Standardization of fishing effort for Champsocephalus gunnari in the South Georgia ... inflexible in its use of data types and has no estimate of accuracy. A standardized CPUE index for ... Champsocephalus gunnari fishing in Subarea 48.3 is derived using a multiplicative model and data from many ... CHAMPSOCEPHALUS GUNNARI IN THE SOUTH GEORGIA AREA (SUB AREA 48.3) P.S. Gasiukov* Abstract Traditional ... calculation of catch-per-unit-effort series is inflexible in its use of data types and has no estimate of ... accuracy. A standardized CPUE index for Champsocephalus gunnari fishing in Subarea 48.3 is derived using ... ; Frolkina and Gasiukov, 1989). It is known that in order to use the method correctly it is necessary to ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 327–336 : Autor(es): Gasiukov, P.S.
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Moulting interval and growth of juvenile Antarctic krill fed different concentrations of the diatom Phaenodactylum tricornutum in the laboratory
concentrations of the diatom Phaenodactylum tricornutum in the laboratory Abstract / Description: Juvenile ... 0.047 mm day –1, which is too slow to support the hypothesised 2-year life-span of this animal in the ... field. Growth conditions of krill in the Southern Ocean are discussed, with special reference to the ... available food concentration. Note: The full text of this paper will be published under the above title in ... OF JUVENILE ANTARCTIC KRILL FED DIFFERENT CONCENTRATIONS OF THE DIATOM PHAENODACTYLUM TRICORNUTUM IN ... slow to support the hypothesised 2-year life-span of this animal in the field. Growth conditions of ... krill in the Southern Ocean are discussed, with special reference to the available food concentration ... . Note : The full text of this paper will be published under the above title in Polar Biology (1987 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 223-225 : Autor(es): Ikeda, T. and P.G. Thomas
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A review of the trophic role of mesopelagic fish of the family Myctophidae in the Southern Ocean ecosystem
Paper Title: A review of the trophic role of mesopelagic fish of the family Myctophidae in the ... myctophids demonstrate that this group of mesopelagic fish plays a significant role in the community of ... carlsbergi ranges from 157 to 364 million tonnes. Myctophids occupy the third level in the Southern Ocean ... TROPHIC ROLE OF MESOPELAGIC FISH OF THE FAMILY MYCTOPHIDAE IN THE SOUTHERN OCEAN ECOSYSTEM A.N. Koz.10 ... demonstrate that this group of mesopelagic fish plays a significant role in the community of Southern Ocean ... from 157 to 364 million tonnes. Myctophids occupy the third level in the Southern Ocean trophic system ... . Myctophids dominate in terms of the number of species, their widespread distribution and the abundance of ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 71–77 : Autor(es): Kozlov, A.N
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Length-at-age in juvenile Patagonian toothfish (Dissostichus eleginoides)
Paper Title: Length-at-age in juvenile Patagonian toothfish (Dissostichus eleginoides) Abstract ... estimated from reading otoliths in a goodness-of-fit test. The majority of the otoliths (83.6%) were ... observed in the length density represent different age cohorts separated by one year. File: 01ashford.pdf ... . 9 (2002): 1–10 LENGTH-AT-AGE IN JUVENILE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) J ... on length, and compared with ages estimated from reading otoliths in a goodness-of-fi t test. The ... ages. We conclude that the two dominant modes observed in the length density represent different age ... INTRODUCTION In recent years a fi shery for Patagonian tooth- fi sh (Dissostichus eleginoides) has developed ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 1–10 : Autor(es): Ashford, J., C. Jones, S. Bobko and I. Everson