Resultados de la búsqueda
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Estimation of effective sample size for catch-at-age and catch-at-length data using simulated data from the Dirichlet-multinomial distribution
Paper Title: Estimation of effective sample size for catch-at-age and catch-at-length data using ... simulated data from the Dirichlet-multinomial distribution Abstract / Description: The incorporation of ... ‘effective sample size’ (ESS) in integrated assessments is an approximate but simple way of modelling the ... distribution of catch-at-age or catch-at-length frequencies using a multinomial likelihood when there is extra ... distribution of π given by equation 3) and is given by Mosimann (1962, equation 7) and Johnson and Kotz (1969 ... Estimation of EffEctivE samplE sizE for catch-at-agE and catch-at-lEngth data using simulatEd data from ... thE dirichlEt-multinomial distribution S.G. Candy Department of the Environment, Water, Heritage ... Email – steve.candy@aad.gov.au Abstract The incorporation of ‘effective sample size’ (ESS) in ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 115–138 : Autor(es): Candy, S.G
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Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Subarea 48.6
. mawsoni in 2011, in order to maximize the use of tagged fish. We propose the extension of the east ... last WG-SAM meeting. We tentatively recalculated a sample size of Dissostichus spp in each block in ... such a way that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of ... coefficient variance of biomass estimate from the bootstrapped procedure, under the condition that the ...
Meeting Document : WG-FSA-13/37 : Autor(es): Delegation of Japan
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A comparison between otoliths and scales for use in estimating the age of Dissostichus eleginoides from South Georgia
Paper Title: A comparison between otoliths and scales for use in estimating the age of ... understanding the population dynamics and productivity of a fish stock. The use of scales to estimate age can ... result in large errors in age data for long-lived species, usually due to compression of scale circuli ... whose age has been estimated using both scales and otoliths. We estimated the age of D. eleginoides ... to a more conservative management strategy. However the loss of wholesale value due to under ... BETWEEN OTOLITHS AND SCALES FOR USE IN ESTIMATING THE AGE OF DISSOSTICHUS ELEGINOlDES FROM SOUTH ... the population dynamics and productivity of a fish stock. The use of scales to estimate age can ... result in large errors in age data for long-lived species, usually due to compression of scale circuli ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 75–92 : Autor(es): Ashford, J.R., S. Wischniowski, C. Jones, S. Bobko and I. Everson
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Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) in the Ross Sea region
Paper Title: Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes ... identification of a new species of Southern Ocean grenadier, Macrourus caml, which had hitherto been identified ... as M. whitsoni. The first comparison of the distribution and ecology of the two species of Macrourus ... in the Ross Sea region is presented. The number of rays in the left pelvic fin and number of rows of ... and East strata, with a spatial distribution similar to that of other samples used in this study ... shallower depths on the continental slope, and deeper depths in the east, so effects of location and depth ... between males and females of both species were usually <10%. Macrou rus whitsoni outside the East ... East stratum seemed generally more developed at the time of the study than gonads of M. whitsoni in ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 37–61 : Autor(es): Pinkerton, M.H., P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown
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Biomass of Antarctic krill around South Shetland using 2-dB difference method in April 2016
operated by Norway, Korea, and Japan, etc. Major fishing area is the surroundings of South Sheltland where ... it is surrounded by Darke Passage in North, Weddle Sea in East, and Bransfield Strait in South ... . CCAMLR (Convention for the Conservation of Antarctic Marine Living Resources) is currently implementing a ... utilize Krill resources continuously. This study is aimed to estimate the density and the biomass of Krill ...
Meeting Document : WG-EMM-16/60 : Autor(es): Delegation of the Republic of Korea
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Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in Australian sub-Antarctic trawl fisheries
Paper Title: Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in ... Australian sub-Antarctic trawl fisheries Abstract / Description: Estimates of age and growth were obtained ... McDonald Islands (Division 58.5.2) in 1992 and 1993. The range of estimated ages was 4 to 25 years. There ... maturity of M. carinatus was determined from 162 specimens collected during commercial trawl fishing ... . 10 (2003): 139–151 139 AGE, GROWTH AND SIZE AT SEXUAL MATURITY OF MACROURUS CARINATUS CAUGHT AS ... – esmee.vanwijk@aad.gov.au Abstract Estimates of age and growth were obtained from 156 Macrourus carinatus ... 1992 and 1993. The range of estimated ages was 4 to 25 years. There were no signifi cant differences ... sexes combined were: L∞ = 690 mm, K = 0.069 and t0 = -2.4. The size at sexual maturity of M ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 139–151 : Autor(es): van Wijk, E.M., R. Williams and A.J. Constable
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Spatial and temporal distribution of krill Euphausia superba biomass in the Ross Sea (1989/90, 1994/95)
(east of longitude 180°), estimated during late spring and at the beginning of the austral summer in ... Abstract: The paper, based on the results of italian expeditions to the Ross Sea (December 1989 ... - Januar 1990 and November- December 1994), presents how is spatial and temporal distribution of krill ... December- January). The process of ice melting began in mid November, near Ross Ice Shelf (so called ...
Meeting Document : WG-EMM-97/53 : Autor(es): Kalinowski, J., Azzali, M.
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Distribution and abundance of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean
Paper Title: Distribution and abundance of Macrourus carinatus on BANZARE Bank in the southern ... Indian Ocean Abstract / Description: This paper provides an assessment of the distribution and abundance ... of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean (Divisions 58.4.1 and 58.4.3 ... ) based on results from a trawl survey in 1999. This is the first quantitative assessment of M. carinatus ... . 1995. Distribution and biology of five grenadier fish (Pisces: Macrouridae) from the upper and middle ... DISTRIBUTION AND ABUNDANCE OF MACROURUS CARINATUS ON BANZARE BANK IN THE SOUTHERN INDIAN OCEAN E.M. van Wijk ... 7050 Tasmania, Australia Abstract This paper provides an assessment of the distribution and ... abundance of Macrourus carinatus on BANZARE Bank in the southern Indian Ocean (Divisions 58.4.1 and 58.4.3 ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 171–178 : Autor(es): van Wijk, E.M., A.J. Constable, R. Williams and T. Lamb
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Surface water masses, primary production, krill distribution and predator foraging in the vicinity of Elephant Island during the 1989-90 austral summer
immigration from east of the study area. Krill sampled throughout the observation period were reproductively ... Abstract: Four successive surveys of the pelagic marine environment were conducted over a 100-by ... were collected to describe the thermohaline structure, the distribution of phytoplankton biomass and ... primary productivity, the distribution and demography of krill, and the foraging patterns of krill ...
Meeting Document : WG-CEMP-90/11 : Autor(es): A.F. Amos, J.L. Bengtson, O. Holm-Hansen, V.J. Loeb, M.C. Macaulay and J.H. Wormuth (USA)
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Observation of seabirds in the Southern Ocean in 1988/89
Paper Title: Observation of seabirds in the Southern Ocean in 1988/89 Abstract / Description ... : This paper examines the numerical and species distribution of birds in the sub-Antarctic area of the ... Southern Ocean to the south of 60°S. Thirty minute observations were made daily during daylight hours at 8 ... ports of call. Maps summarize the distribution of 14 bird species as well as of the individual species ... . Abundance was less to the east of the South Sandwich Islands and did not exceed 50 birds during a shift ... South Sandwich Islands. In the Indian Ocean sector the blue petrel only was observed to the east of 75 ... . Large flocks of up to 20 birds were common in summer to the east of 74°W. The number observed at one ... Islands (Figure 7). This species was regularly sighted to the east of 200 W, near the ice-edge and in the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 521–542 : Autor(es): Vagin, A.V. and V.V. Popov