Search results
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The status of krill (Euphausia superba DANA) resources in CCAMLR Statistical Divisions 58.4.2 and 58.4.3 from 1988 to 1990. Results of acoustic surveys
and 1987 year-classes and with a diminished rate of emigration of krill of these year-classes from the area ... with the abundant 1986 and 1987 year-classes and with a diminished rate of emigration of krill of these year-classes ... in krill biomass observed in the area in 1990 is linked with the abundant 1986 and 1987 year-classes ... and with a diminished rate of emigration of krill of these year-classes from the area in 1989/1990. Resume Depuis ... intervals are given in Table 1. The boundaries of survey areas were not fixed from year to year. Therefore ... in the surface layer of the area was 3.5±0.6x 103 tonnes, and mean density was 41 g/m2. In the eastern part ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 163–173 : Author(s): Bibik, V.A. and V.N. Yakovlev
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Distribution and population structure of Dissostichus eleginoides and D. mawsoni on BANZARE Bank (CCAMLR Division 58.4.3b), Indian Ocean.
1000 1500 2000 0 10 20 30 500 1000 1500 2000 0 10 20 30 500 1000 1500 2000 In di v. 10 00 ... 1000 1500 2000 Mean depth (m) In di vi du al ... 130 140 150 160 170 180 190 In di v. Dissostichus eleginoides Dissostichus mawsoni In di vi du al s ... for females and 5.3–6.0 for males in the 2006/07 and 2008/09 seasons (Table 1). Discussion Yukhov (1972 ... . mawsoni on BANZARE Bank is similar to that hypothesised for the Ross Sea population with analogous ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 145–153 : Author(s): Taki, K., M. Kiyota, T. Ichii and T. Iwami
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Areal and seasonal extent of sea-ice cover off the northwestern side of the Antarctic Peninsula: 1979 to 1996
four periods of extensive ice cover during the last 18 years. Variability in seasonal timing, areal ... extent, seasonal duration and persistence of sea-ice over multiple years is apparent and is consistent ... during years between periods of extensive ice cover decreased during the second half of the time series ... of the Antarctic Peninsula indicates that there were four periods of extensive ice cover during the last 18 years ... Peninsula indicates that there were four periods of extensive ice cover during the last 18 years ... years is apparent and is consistent with features described by Stammerjohn and Smith (1996) for ice ... cover during the summer months and winter ice cover during years between periods of extensive ice cover ... significant correlations between krill reproduc- tion, survival at early-life stages and sea-ice cover ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 65–73 : Author(s): Hewitt, R
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Mitigation of seabird captures during hauling in CCAMLR longline fisheries
/ Description: In recent years there has been an increased focus on reducing seabird captures that occur during ... hauling in CCAMLR longline fisheries. Haul captures were first recognised by CCAMLR as a problem as early ... In recent years there has been an increased focus on reducing seabird captures that occur during ... hauling in CCAMLR longline fisheries. Haul captures were first recognised by CCAMLR as a problem as early ... and from dis- cussion with observers and operators, suggests that there are two key aspects of effective ... Ltd 18 Queen Street, London W1J 5PN United Kingdom Abstract In recent years there has been ... captures were first recognised by CCAMLR as a problem as early as 1994/95 when steps were taken to reduce ... during the line-hauling process. Haul captures were recognised by CCAMLR as a problem as early as 1994 ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 155–162 : Author(s): Reid, E., B. Sullivan and J. Clark
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Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of tag-detection rates
is defined as an individual vessel, but the analysis is later extended to vessel- season (trip ... time by applying the method to the annual fishing trips for each vessel. methods Initially, the case ... on 1 December each year, and ends when the quota has been fully caught which, in recent years, has been ... between 15 January and 28 February. Each vessel is assigned a unique trip number for each season, which ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 73–80 : Author(s): Mormede, S. and A. Dunn
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Seabird interactions with trawl and longline fisheries for Dissostichus eleginoides and Champsocephalus gunnari
both within a n d outside the CCAMLR area, and in recent years the D. eleginoides fishery ... there (Marchant and Higgins, 1990). Early in the voyage, the birds were observed near the ship at all times ... of liver and guts. They were more successful later in the voyage when the factory waste was macerated ... mostly affected diving birds such as white-chinned petrels when they were trying to seize items lost ... Paper Title: Seabird interactions with trawl and longline fisheries for Dissostichus eleginoides ... was zero at Macquarie Island and very low at Kerguelen; most was associated with a single vessel using ... a netsonde cable while targetting C. gunnari. Most mortality associated with both longliners and ... trawlers was of white-chinned petrels, with a lesser mortality of albatross species. Mortality rates ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 93–99 : Author(s): Williams, R. and D. Capdeville
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Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea
for at least one year. Individual oocytes are then recruited into the vitellogenic phase over at least a 6–12 ... by approximately May each year. The age at 50% spawning for females on the Ross Sea slope region is 16.6 years (95 ... with an A 50% of 12.8 years (95% CI 11.9–14.0) or 120.4 cm (95% CI 114.8–126.7) by length. Evidence of skip ... year. Individual oocytes are then recruited into the vitellogenic phase over at least a 6–12 ... to the slope age-frequency distribution (data from Dunn and Hanchet, 2009), resulting in an age-frequency dis ... Antarctic Fisheries Working Group provided helpful dis- cussions and input into this paper. D. Ramm ... and females (forecasting ogive), on average females spawn more than four years later than males (Table ... begins, oocytes grow and accumulate at the cortical alveoli stage for at least one year. Individual ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 53–73 : Author(s): Parker, S.J. and P.J. Grimes
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Interactions of Patagonian toothfish fisheries with killer and sperm whales in the Crozet Islands Exclusive Economic Zone: an assessment of depredation levels and insights on possible mitigation strategies
) of Patagonian toothfish were lost due to depredation by killer whales and both killer and sperm whales. Killer ... . It was estimated that a total of 571 tonnes (€4.8 million) of Patagonian toothfish were lost due ... - erogeneity in capture probability variations, was selected. After correction by the proportion of dis ... by a fishing vessel leaving the zone and use that information to find it over great dis- tances. Furthermore ... ) of Patagonian toothfish were lost due to depredation by killer whales and both killer and sperm whales. Killer ... Islands EEZ. The vessels operated all year round with higher activ- ity in February when the fishery ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 179–195 : Author(s): Tixier, P., N. Gasco, G. Duhamel, M. Viviant, M. Authier and C. Guinet
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New data on spawning, hatching and growth of Champsocephalus gunnari on the shelf of the Kerguelen Islands
enabled a new cohort of fish to be identified each year. However, annual variations in abundance have been ... observed. During the sampling period the 1988 cohort was dominant on the outer shelf. The three-year cycle ... each year. However, annual variations in abundance have been observed. During the sampling period ... the 1988 cohort was dominant on the outer shelf. The three-year cycle observed previously seems ... the Kerguelen plateau. In: Di Prisco, G., R. Maresca and B. Tota (Eds). Biology of Antarct ic Fishes ... years: later. Period No. of Larvae/ l 000 m3 Maturity Stages of Fish Fish from the outer shelf ... has enabled a new cohort of fish to be identified each year. However, annual variations in abundance ... . The three-year cycle observed previously seems to be related to the maturation stage of each current cohort ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 21–34 : Author(s): Duhamel, G
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International CCAMLR applied research and monitoring program, Prydz Bay priority area
by Australia towards the first five years of an International CCAMLR Applied Research and Monitoring Program ... five years of an International CCAMLR Applied Research and Monitoring Program in the Prydz Bay area ... of a proposed scientific research contribution by Australia towards the first five years of an International ... the effect of harvesting. This was subsequently confirmed by other member countries at the Fourth Meeting ... , the following notes outline the direct contribution which Australia proposes to make to a first five year ... and strategies. This requires the following research objectives • To quantify year to year fluctuation ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 283-295 : Author(s): Australia