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1. Fishery Report: Exploratory fishery for Dissostichus spp. in Division 58.4.3a

   the Year-of-the-Skate, and the protocol in CCAMLR-XXVII, paragraph 4.55, was implemented. 20. In ... been a success overall and had met its objectives to enhance data collection and improve tagging in ... applies to this fishery and in recent years has been linked to an exemption for night setting in CM 24-02 ... Mitigation In accordance with CM 25-02, except paragraph 4 if requirements of CM 24-02 are met. Carry ...

   Document : Site Section: Publications

2. Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993

   Paper Title:  Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993 Abstract ... / Description:  Acoustic estimates of krill biomass in the vicinity of Elephant Island are presented for the ... years 1981 to 1993 (with the exception of 1982 and 1986). Estimates for 1981 to 1991 are based on ... density over the 13-year period were 1 703 x  103 tonnes and 53.2 g/ 2. File:  01hewitt-demer.pdf ... the effects of variations in year class strength. In six out of seven cases the change in density ... BIOMASS IN THE ELEPHANT ISLAND AREA: 1981 - 1993 R.P. Hewitt Southwest Fisheries Science Center La ... 92093, USA (Supported by the Hertz Foundation) Abstract Acoustic estimates of krill biomass in the ... vicinity of Elephant Island are presented for the years 1981 to 1993 (with the exception of 1982 and 1986 ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 1–5 : Автор(ы): Hewitt, R.P. and D.A. Demer

3. Diel vertical distribution of Antarctic krill around the South Shetland Islands in February 2019 and its potential effect on biomass estimation

   vertical distribution of krill swarms around the South Shetland Islands in Subarea 48.1 were analyzed based ... on data collected by the Chinese fishing vessel participating in the international 2019 Area 48 ... survey. Results show that more krill swarms were found in shallower depth at night than during daytime ... likely underestimate the krill density due to the shallow distribution pattern of the animal, which may ...

   Meeting Document : SG-ASAM-2019/05 : Автор(ы): X. Wang, X. Yu, J. Zhang and X. Zhao

4. Glider-based estimates of Antarctic krill in Bransfield Strait, and the West shelf off Livingston Island, Antarctica

   biomass assessments of Antarctic krill (Euphausia superba) in the Bransfield Strait and the west shelf of ... -December 2018 and mid-March 2019. We compare mean biomass density (g m-2) estimates derived from gliders to ... replace vessel-based biomass surveys. In the Bransfield Strait, glider-based biomass density estimated ... over 13 years of ship surveys. On the west shelf of Livingston Island, glider-based biomass densities ...

   Meeting Document : WG-EMM-2019/13 : Автор(ы): C. Reiss, A. Cossio, G. Cutter, J. Walsh and G. Watters

5. Some components of uncertainty in the CCAMLR 2000 acoustical survey of krill

   Abstract:  Quickly studied and quantified were sources of uncertainty in the CCAMLR 2000 ... acoustical estimate of krill abundance in FAO statistical area 48. The variance in system calibration was ... evaluated in relation to the effects of variant water temperature and salinity on sound speed, sound ... absorption, and beam characteristics. Uncertainty in krill target strength (TS) was estimated using a ...

   Meeting Document : WG-EMM-00/49 : Автор(ы): D.A. Demer (USA)

6. Competition-induced starvation drives large-scale population cycles in Antarctic krill

   —exhibits a five to six year population cycle, with oscillations in biomass exceeding one order of magnitude ... Abstract:  Antarctic krill (Euphausia superba)—one of the most abundant animal species on Earth ... cycles in Antarctic krill Approval:  Approved Secretariat Workflow Status:  Content Approved Delegation ...

   Meeting Document : WG-EMM-18/P05 : Автор(ы): A.B. Ryabov, A.M. de Roos, B. Meyer, S. Kawaguchi and B. Blasius

7. 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 ... the value of 0.35 used by the Working Group on Fish Stock Assessment (WG-FSA) in previous years. In ... group in the first fishing year is estimated from equation (8); (ii) the abundance values Na,l, a ... fishing year, and fish mean weight are given in Tables 1 and 2. The catch by weight of C. gunnari in ... DERIVING NATURAL MORTALITY RATE USING DATA FOR CHAMPSOCEPHALUS GUNNARI IN SUB AREA 48.3 P.S. Gasyukov ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 69–83 : Автор(ы): Gasyukov, P.S. and R.S. Dorovskikh

8. Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48

   Paper Title:  Alternative methods for determining subarea or local area catch limits for krill in ... precautionary catch limit on krill (Euphausia superba) in Statistical Area 48. The measure also implies an ... application in future of precautionary limits to subareas or local areas of this area. Nine alternative ... current fishing patterns; and (vi) the potential for delay in implementing the alternative. An alternative ... Penguins in the South Shetland Islands, Antarctica. British Antarctic Survey Bulletin, 81: 19-30. 247 ... single year. Then, for the following two years, that subarea would be closed to fishing. For example, if ... SUBAREA OR LOCAL AREA CATCH LIMITS FOR KRILL IN STATISTICAL AREA 48 G. Watters and R.P. Hewitt ... (Euphausia superba) in Statistical Area 48. The measure also implies an application in future of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 237–249 : Автор(ы): Watters, G. and R.P. Hewitt

9. Catch per unit effort and proportional recruitment indices from Japanese krill fishery data in Subarea 48.1

   fishery data in Subarea 48.1 Abstract / Description:  Proportional recruitment indices and CPUE in Subarea ... . CPUE (catch/towing volume) in the Livingston Island area showed a decreasing trend during the study ... period. The use of different fishing strategies in response to a demand for higher product quality and a ... general decrease in krill density in the study area were considered as possible reasons for this. On the ... of Log,,,CPUE with increasing years in the Livingston Island area (T = -0.695, n = 15, p = 0.0003 ... waters and in some years they are mainly distributed close to the Peninsula (Siegel, 1988), age l ... . They showed peaks around the 1980/81, 1981/82 and 1985/86 year classes, and low values in between ... testing Log1,CPUE versus year in both areas. The results of the test showed a significant negative trend ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 47–63 : Автор(ы): Kawaguchi, S., T. Ichii and M. Naganobu

10. RECENT POPULATION ESTIMATES AND TRENDS IN NUMBERS OF ALBATROSSES AND GIANT PETRELS BREEDING AT THE SUB-ANTARCTIC PRINCE EDWARD ISLANDS

    group (Marion and Prince Edward islands) was conducted during December 2008, seven years after the ... have remained stable, whereas the population on Prince Edward Island decreased by 20% from 2001 to 2008 ... similar in 2001 and 2008. Counts of both sooty albatrosses Phoebetria spp. were substantially higher at ... Prince Edward Island in 2008, possibly as a result of better coverage compared to 2001. Dark-mantled ...

    Meeting Document : WG-EMM-10/P4 : Автор(ы): P.G. Ryan, M.G.W. Jones, B.M. Dyer, L. Upfold and R.J.M. Crawford

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