Search results
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Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during the 1990/91 austral summer
. The total biomass over the survey area was estimated to be 1.59±0.45 million tonnes (95% confidence limit ... % confidence limit), of which 1.22±0.42 million tonnes was concentrated in the fishing ground (frontal ... the survey area was estimated to be 1.59±0.45 million tonnes (95% confidence limit), of which 1.22±O.42 ... and determination of maturity stage; all individuals were analysed for small catches of :S;150 kriU. Body length ... density (g1m2) for each zone, the variance (Var) of the mean and 95% confidence limits (CL) about ... and proportion a in both tails. Biomass (tonnes) for each zone, the variance and 95% confidence limits ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 183–199 : Author(s): Ichii, T., H. Ishii and M. Naganobu
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Catch per unit effort and proportional recruitment indices from Japanese krill fishery data in Subarea 48.1
Paper Title: Catch per unit effort and proportional recruitment indices from Japanese krill ... . CPUE (catch/towing volume) in the Livingston Island area showed a decreasing trend during the study ... Catch per unit effort and proportional recruitment indices from Japanese krill fishery data ... ., 1997) and showed a close relationship to sea-ice indices. CPUE (catch/towing volume) in the Livingston ... CCAMLR Science, Vol. 4 (1997): 47-63 CATCH PER UNIT ... . CPUE (catch/towing volume) in the Livingston Island area showed a decreasing trend during the study ... -term fluctuation of catch per unit effort (CPUE) using Japanese fisheries data. MATERIAL AND METHODS ... Data Source Krill catch data (from 1980/81 to 1995/96) recorded in logbooks of Japanese krill ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 47–63 : Author(s): Kawaguchi, S., T. Ichii and M. Naganobu
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Erratum and Addendum - Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects – CCAMLR Science, 11: 59–80 (2004)
Paper Title: Erratum and Addendum- Modelling catch and effort data using generalised linear ... Erratum and Addendum - Modelling catch and effort data using generalised linear models, the Tweedie ... in CCAMLR Science, Vol. 16 (2009): 221–222 221 ModElling cAtch And Effort dAtA using gEnErAlisEd linEAr ... . Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 221–222 : Author(s): Candy, S.G
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Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?
Paper Title: Seabird by-catch by autoline vessels: do line setters increase the sink rate ... Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight ... AUTOLINERS AND SEABIRD BY-CATCH: DO LINE SETTERS INCREASE THE SINK RATE OF INTEGRATED WEIGHT LONGLINES ... and Division 58.5.1 respectively). Reported seabird by-catch rates are among the highest in the world ... and the highest catch rates have been recorded by autoline vessels (Delord et al., 2005). Currently seven ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 107–114 : Author(s): Robertson, G., J. Williamson, M. McNeill, S.G. Candy and N. Smith
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Preliminary atlas of Balaenopterid whale distribution in the Southern Ocean based on pelagic catch data
on pelagic catch data Abstract / Description: A series of 57 computer-generated maps is presented, depicting ... the locations of pelagic catches of Balaenopterid whales by month between 1931/32–1979/80. Two sets of maps were ... produced. The first series contains 24 maps of catches by species by month, and the second consists of 30 ... maps of catches of fin whales for each season from 1952/53–1961/62 for January, February and March ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 113-193 : Author(s): Mizroch, S.A. et. al
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Management and assessment options for the crab fishery around South Georgia
. Such an approach includes the use of catch/effort controls in addition to the 'size-sex-season' controls ... . Implementation of the catch/effort controls also requires estimates of stock abundance, which could be obtained ... . Such an approach includes the use of catch/effort controls in addition to the 'size-sex-season' controls ... . Implementation of the catch/effort controls also requires estimates of stock abundance, which could be obtained ... to capture. Maximise yield-per-recruit. (Base catch limit on the abundance of males of legal size and above ... partly be addressed by limiting catch and/or effort to ensure that the fishery does not develop ... ) the The Fishery for P. spinosissima in CCAMLR same size limit will apply. The catch and effort Statistical Area ... to the need for a conservative approach to management. Such an approach includes the use of catch/effort ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 193–202 : Author(s): Basson, M. and D.D. Hoggarth
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Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf
catches from the shelf, as this area is likely to have the greatest overlap between D. mawsoni ... and potential predators, and thus where any ecosystem effects would be most likely to occur. The shelf catch has ... to the Ross Ice Shelf). The catch rates from the exploratory longline fishery typically show high temporal ... break at about 600–800 m depth). The focus is on D. mawsoni catches from the shelf, as this area ... before dropping to 2 300 tonnes in 2008, partly as a result of the reduction in catch limit. Almost all ... –1 Catch limit (tonnes) 1997 1 2 <1 0.06 0.03 1 980 1998 1 82 41 0.51 0.16 1 980 1999 2 252 297 1.18 ... * SSRUs with a zero catch limit – but note that in 2006–2008 a catch of up to 10 tonnes was permissible ... between years on catch per 24-hour set, so the use of a single year to illustrate trends is of limited ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 33–51 : Author(s): Hanchet, S.M., S. Mormede and A. Dunn
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Distribution of krill (Euphausia superba Dana) catches in the South Shetlands and South Orkneys
Paper Title: Distribution of krill (Euphausia superba Dana) catches in the South Shetlands ... . Krill catches in these zones are shown to have a consistent pattern in Subarea 48.1 but an unpredictable ... % of the catch in Subarea 48.1 from December to March was taken within 40 km of the coast, and 90% within 80 km ... in all years 1988 to 1991. In 1987, 1988 and 1991, 75% of the catch in Subarea 48.2 between December ... currently has imposed a precautionary limit of 1.5 million tonnes on the kriIl catch from Statistical Area ... DANA) CATCHES IN THE SOUTH SHETLANDS AND SOUTH ORKNEYS DJ. Agnew* Abstract A set of concentric ... of the South Shetland and South Orkney Islands. Krill catches in these zones are shown to have a consistent ... variable hydrographic conditions. About 50% of the catch in Subarea 48.1 from December to March was taken ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 287–303 : Author(s): Agnew, D.J.
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Preliminary model of krill fishery behaviour in Subarea 48.1
data over the period 1989 to 1992. The distribution of catches predicted by the model, which ... of catches in the subarea. A number of management scenarios are considered which involve the closure ... and Elephant Islands in alternate years would result in an average yearly catch similar to that at present ... . However, in this scenario, the catch would be more concentrated in foraging areas of land-based predators ... % and 5% confidence limits for total catch (C) were calculated. The catch model contained the following ... there was no limit to catch in any fine-scale square. As mentioned previously, Agnew (1992) demonstrated ... operating for four months in Subarea 48.1. Confidence limits are given for total catch only, although ... fishery data over the period 1989 to 1992. The distribution of catches predicted by the model, which ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 71–79 : Author(s): Agnew, D.J. and V.H. Marín
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Status of the coastal stocks of Dissostichus spp. in East Antarctica (Divisions 58.4.1 and 58.4.2)
low productivity. Estimates of average biomass were made by comparison of standardised catch rates ... known landed catches. Potential yields were calculated for each SSRU assuming a similar productivity ... yield from all assessed SSRUs (260 tonnes) is much lower than the current total allowable catch (1 380 ... productivity. Estimates of average biomass were made by comparison of standardised catch rates with the Ross ... or closed to fishing. CCAMLR set the catch limits in this experi- mental fishery at what it considered ... % of the catch limit in Division 58.4.2. In the east (Division 58.4.1) fishing has been more predictable ... , and the catch limit has been reached in most years. This paper reviews the results of the experi- ment ... where data are limited, as is the case for this investigation. Methods Catch, effort and scientific ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 71–100 : Author(s): Agnew, D.J., C. Edwards, R. Hillary, R. Mitchell and L.J. López Abellán