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1. Habitat partitioning in Antarctic krill: spawning hotspots and nursery areas

   early to late part of the austral season, juvenile distribution moves from ocean to shelf, opposite in ... whether “hotspots” of egg production and early stage nursery occurred, and secondly whether the available ... -frequency databases. Although adult males and females of spawning age were widely distributed, the ... distribution of eggs, nauplii and metanauplii indicates that spawning is most intense over the shelf and shelf ...

   Meeting Document : WG-EMM-2019/20 : Автор(ы): F. Perry, A. Atkinson, S.F. Sailley, G.A. Tarling, S.L. Hill, C.H. Lucas and D.J. Mayor

2. A nonparametric algorithm to model movement between polygon subdomains in a spatially explicit ecosystem model

   part of the modelling effort. In marine applications, a flow field grid describing the water movement ... are not designed to model movement on the larger scale of polygons, resulting in disproportionately ... usually forms the basis for movement of passive or nearly passive biomass. Grid-based advection algorithms ... effective algorithm to model movement at the polygon level is proposed, preserving the general properties of ...

   Meeting Document : WG-EMM-06/35 : Автор(ы): T. Lenser and A. Constable (Australia)

3. A study on calibration for commercial echosounder using bottom backscattering strength in Antarctic

   fishing vessel to use it in estimating biomass of Antarctic krill (Euphausia superba). The method of ... calibration was to analyze the difference between the bottom backscattering strength of the commercial ... , was examined to verify the calibration result. The analysis result confirmed the possibility of ... calibration by bottom backscattering strength, since the proportion of krill swarm signals within 2 dB < S ...

   Meeting Document : SG-ASAM-17/P01 : Автор(ы): S.-G. Choi, H. Lee, K. Lee and J. Lee

4. Quantifying within- and between-season variability in Adélie penguin fledgling weights: statistical and practical implications for detecting change

   Béchervaise Island and use them in a power analysis as a continuation of the CEMP review. The statistical ... fledgling weights with a decline in resource availability, the consideration of total chick failure during ... reducing to 30 the number of birds weighed in a single 5-day period each year. If practical, this outcome ... severe food shortages and a possible change in variance associated with a change in the mean value. With ...

   Meeting Document : WG-EMM-05/20 : Автор(ы): L. Emmerson, C. Southwell and J. Clarke (Australia)

5. Adélie penguin breeder abundance in CCAMLR Divisions 58.4.1 and 58.4.2

   future krill fisheries in those regions. We present here estimates of the breeding Adélie penguin ... Adelie penguins were attempting to breed at the time of the surveys in Divisions 58.4.1 and 58.4.2. This ... estimate is substantially higher than the previously available estimate in Woehler (1993) of 767,000 ... predators of the Southern Ocean including ice-breeding seals, fur seals, penguins and flying seabirds. The ...

   Meeting Document : WG-EMM-13/09 : Автор(ы): C. Southwell, J. McKinlay, L. Emmerson (Australia), A. Takahashi (Japan), C. Barbraud, K. DeLord and H. Weimerskirch (France)

6. Developing priority variables (“ecosystem Essential Ocean Variables” – eEOVs) for observing dynamics and change in Southern Ocean ecosystems

   support assessments. In this paper we outline the rationale, including establishing a set of criteria, for ... and use of eEOVs in an observing system in the Southern Ocean, noting that existing operations and ... , Atlantic and Indian.  Lastly, we discuss the importance of simulation modelling in helping with the design ... of the observing system in the long term.  Author(s):  A.J. Constable, D.P. Costa, O. Schofield, L ...

   Meeting Document : WG-EMM-16/P11 : Автор(ы): A.J. Constable, D.P. Costa, O. Schofield, L. Newman, E.R. Urban Jr., E.A. Fulton, J. Melbourne-Thomas, T. Ballerini, P.W. Boyd, A. Brandt, W. de la Mare, M. Edwards, M. Eléaume, L. Emmerson, K. Fennel, S. Fielding, H. Griffiths, J. Gutt, M.A. Hindell, E.E. Hofmann, S. Jennings, H.S. La, A. McCurdy, B.G. Mitchell, T. Moltmann, M. Muelbert, E. Murphy, T. Press, B. Raymond, K. Reid, C. Reiss, J. Rice, I. Salter, D.C. Smith, S. Song, C. Southwell, K.M. Swadling, A. Van de Putte and Z. Willis

7. JAPANESE SCIENTIFIC OBSERVER ACTIVITIES FOR KRILL FISHERY IN CCAMLR CONVENTION AREA FROM 2003/04 TO 2007/08 FISHING SEASONS

   the krill samples revealed the occurrence of black-spot disease in Antarctic krill and its relation to ... Abstract:  This document introduces the recent activities and outcome of Japanese scientific ... grounds of the Japanese fishery were the Subareas 48.1, 48.2, and 48.3. Recent observation effort was ... concentrated to the Subarea 48.3. The observer coverage was 32.2 – 51.4 %, and exceeded 50 % in 2007/08 season ...

   Meeting Document : WG-EMM-09/19 : Автор(ы): M. Kiyota and T. Iida (Japan)

8. Solutions to seabird by-catch in Alaska’s demersal longline fisheries

   and 2000) in 2 major Alaska demersal longline fisheries: the Gulf of Alaska /Aleutian Island ... we saw orders of magnitude variation in bycatch across years and in the case of the sablefish fishery ... conditions. We report the results of experimentally rigorous tests of seabird bycatch deterrents on the local ... abundance, attack rate, and hooking rate of seabirds in both fisheries. Based on our results, we recommend a ...

   Meeting Document : WG-FSA-01/35 : Автор(ы): E.F. Melvin, J.K. Parrish, K.S. Dietrich and O.S. Hamel (USA)

9. Selectivity-induced bias in growth parameter estimates

   Abstract:  A short simulation study has been carried out to investigate the size of the bias in ... producing considerably lower estimates of L? and higher estimates of K than in the true population. The ... being included in catch samples. Fish were included in catch samples from the population with ... selectivity function used in the simulations closely matched those used for current toothfish assessments in ...

   Meeting Document : WG-FSA-SAM-05/19 : Автор(ы): G.P. Kirkwood (United Kingdom)

10. Krill catch distribution in relation to predator colonies 1987 to 1992

    Abstract:  The distribution of krill catches in relation to land-based predator colonies ... , calculated from CCAMLR fine-scale data, is shown for Subareas 48.1 and 48.2. The pattern of catches in 1992 ... previous years. It is estimated that the catch in the critical period-distance was equal to 12% and 15% of ... the total exploitation of krill in these two subareas respectively. Author(s):  Secretariat Title ...

    Meeting Document : WG-KRILL-93/10 : Автор(ы): Secretariat

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