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Environment–krill relations in the South Georgia marine ecosystem
Paper Title: Environment–krill relations in the South Georgia marine ecosystem Abstract ... / Description: Interannual variability in the Southern Ocean ecosystem has long been noted and physical factors ... appear to dominate the dynamics. There are, however, few ecological time series available to assess this ... variability and it is only recently that physical datasets have been generated for the Southern Ocean. In this ... there was no information on the number of days spent fishing (days on which fishing actually occurred ... arrows indicate periods when there was no fishery due to the reported absence of krill. The first five ... negative, so it There was no consistent correlation between characterises both the absolute intensity of ... ice-edge positions through the year. There were no consistent correlations between the M-ATs at 50"s ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 13–30 : Автор(ы): Fedoulov, P.P., E. Murphy and K.E. Shulgovsky
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Areas of seabed within the 500 m isobath around Elephant Island (Subarea 48.1)
Paper Title: Areas of seabed within the 500 m isobath around Elephant Island (Subarea 48.1 ... trawl surveys around Elephant Island (the northernmost island of the South Shetland Islands) from 1977 ... /78 to 1992/93. The results are presented in table format. File: 10kock-harm.pdf ... to the south of Clarence Island (see Kock, 1986 - Figure 4) for which no information on fish ... Clarence Island were no longer included in the recent estimate. REFERENCES Everson, I. 1987. Areas of ... AREAS OF SEABED WITHIIV THE 500 M ISOBATH AROUND ELEPHANT ISLAND (SUBAREA 48.1) K.-H. Kock and U ... trawl surveys around Elephant Island (the northernmost island of the South Shetland Islands) from 1977 ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 131–135 : Автор(ы): Kock, K.-H. and U. Harm
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Fishery Report: Dissostichus eleginoides (TOP) Crozet Island inside the French EEZ (Subarea 58.6)
estimated to be 224 tonnes from outside the EEZ. There was no evidence of IUU fishing from 2009 to 2012 ... movements of sub-adult/adult fish, the proportion of exchange between stocks is still unknown and no fish ... are from the total number of hooks set. 16. No incidental mortality of marine mammals was reported ... ) recommended that, as no new information was available on the state of fish stocks in Subarea 58.6 outside ...
Document : Site Section: Publications
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New Zealand: Review of the Ross Sea region stock assessment
and no dispersion – Survey biomass has annual cv and no process error 1. Run the model with no ... of the Ross Sea region stock assessment Sophie Mormede, Steve Parker 18-22 June 2018, Norwich ... challenges • Effect of the MPA 2 3 4 Stock hypothesis & Model structure Proportion of toothfish ... grounds Ross gyre Juveniles then move along shelf Adult feeding on the slope Spawning in the north ...
Document : Site Section: Meetings
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Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77-1986/87
Paper Title: Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77 ... -1986/87 Abstract / Description: The swept area method was used to estimate biomass density changes in ... the stocks of five fish species (Champsocephalus gunnari, Chaenocephalus aceratus, Pseudochaenichthys ... georgianus, Notothenia gibberifrons and Notothenia rossii marmorata) in the South Georgia area in the seasons ... biomass density of c. aceratus increased distinctly, no fish below 30 cm in length were found in the ... -40 cm was still quite high in the catch (no data from the 1979/80 season). Biomass densities in ... CHANGES IN BIOMASS OF FISH STOCKS IN THE SOUTH GEORGIA AREA IN 1976/77-1986/87 M. Mucha and W ... . Slosarczyk (Poland) Abstract The swept area method was used to estimate biomass density changes in the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 185-211 : Автор(ы): Mucha, M. and W. Ślósarczyk
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A simple approach for calculating the potential yield of krill from biomass survey results
Paper Title: A simple approach for calculating the potential yield of krill from biomass survey ... results Abstract / Description: Estimates are calculated for the parameter λ in the yield equation Y = λ ... MB 0 for a krill fishery in which both the fishery and krill growth are seasonal. The criterion used ... for the calculations is that the probability that the krill spawning biomass drops below 20% of its ... the following 20 years, is that from a single pre-exploitation biomass survey. No account is taken of ... concentrated in the three-month growth/fishing season (effectively equivalent to a no-seasonality situation ... acoustic workshop. BIOMASS Report Series No. 40. pp. 106. BEDDINGTON, J.R. and J.G. COOKE. 1983. The ... catch in number of laill over a season from a single cohort of size No at the start of the "year" will ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 207–217 : Автор(ы): Butterworth, D.S., A.E. Punt and M. Basson
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Evaluating the impact of multi-year research catch limits on overfished toothfish populations
Paper Title: Evaluating the impact of multi-year research catch limits on overfished toothfish ... populations Abstract / Description: In stocks that have been depleted by overfishing, the benefit of ... additional fisheries removals for research purposes needs to be evaluated against the risk that such catches ... may contribute to delaying or preventing the recovery of such stocks. Through simulating a Patagonian ... no research fishing scenario was calculated. The length of time it would take for the stock to ... ), and no S-R relationship (scenarios 17). Finally, the impact of natural mortality being 0.1 higher or ... 3). None of the scenarios, including those with no research catches, satisfied criterion (i) of ... the stock, both in absolute terms as well as rela- tive to the estimated median biomass if no research ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 47–55 : Автор(ы): Welsford, D.C
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Preliminary results of research activities of RV Evrika in the Scotia Sea in January-March 1988
Paper Title: Preliminary results of research activities of RV Evrika in the Scotia Sea in January ... -March 1988 Abstract / Description: In 1987/88 a multi-disciplinary survey was conducted of the Scotia ... Sea and adjacent waters, accompanied by regular trawlings with an Isaac-Kidd trawl. The waters off ... South Georgia in particular were surveyed twice. Research activities are part of the program implemented ... was rather smoothed, hence there were no required conditions for the formation of abundant krill ... ACTIVITIES OF RV EVRIKA IN THE SCOTIA SEA IN JANUARY-MARCH 1988 L.1. Maklygin , A.S. Fedorov, V.N. Shnar ... -disciplinary survey was conducted of the Scotia Sea and adjacent waters, accompanied by regular trawlings with ... an Isaac-Kidd trawl. The waters off South Georgia in particular were surveyed twice. Research ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 215-229 : Автор(ы): Maklygin, L.I., A.S. Fedorov, V.N. Shnar, Yu.A. Shulyakovsky, I.V. Krasovsky, Yu.D. Shuvaev and A.V. Kromsky
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Integration of CPUE data into assessments using the Generalised Yield Model
Paper Title: Integration of CPUE data into assessments using the Generalised Yield Model Abstract ... / Description: For the last three years, CCAMLR's Working Group on Fish Stock Assessment (WG-FSA) has ... accorded high priority to the development of methods of integrating different indicators of stock status ... into assessments using the Generalised Yield Model (GYM). In this paper, we propose a method, based on ... the assessments, and WG-FSA had no time to consider this method in detail. The aim of this paper ... three years in assessing the stocks of D, eleginoides indicates that no small group has in Subarea 48.3 ... CPUE DATA INTO ASSESSMENTS USING THE GENERALISED YIELD MODEL G.P. Kirkwood Renewable Resources ... Australian Antarctic Division Channel Highway, Kingston 7050 Tasmania, Australia Abstract For the last ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 65–74 : Автор(ы): Kirkwood, G.P. and A.J. Constable
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The sensitivity of multiple output statistics to input parameters in a krill–predator–fishery ecosystem dynamics model
Paper Title: The sensitivity of multiple output statistics to input parameters in a krill ... within CCAMLR to evaluate options for managing the Antarctic krill fishery in the Scotia Sea and southern ... Drake Passage. The model analysed here required 2 311 input values for each of four scenarios and ... the status of predator groups more than they affected statistics indicating the status of the target ... were illustrative as there was no information avail- able to the modellers about appropriate reference ... abundance of the relevant component is <75% of the abundance in equivalent no-fishing trials at the end ... equivalent no-fishing trials at the end of the recovery period. Predators SSMU Services (II.2 the term ... between the two extremes of no-movement and maximum movement examined by Watters et al. (2013).2 Krill ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Автор(ы): Hill, S.L. and J. Matthews
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