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Effects of recruitment variability and natural mortality on generalised yield model projections and the CCAMLR decision rules for Antarctic krill
proportional recruitment of krill. In this study, krill sampling data for empirical size frequencies were ... projections and the CCAMLR decision rules for Antarctic krill Abstract / Description: The generalised yield ... model (GYM) was used by CCAMLR to establish the precautionary catch limit for the Antarctic krill ... krill around the Antarctic Peninsula (Subarea 48.1) along with increasing rates of natural mortality ... proportional recruitment of krill. In this study, krill sampling data for empirical size frequencies were ... recruitment variability. Methods Krill data Annual research cruises to sample krill popula- tions in four ... Antarctic krill biomass in the South Shetland Islands, through 2011. Document WG-EMM-11/26. CCAMLR ... and C. Reiss. 2011. Modelling Antarctic krill: scale, movement, and age-structure. Document WG-EMM ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 81–96 : Autor(es): Kinzey, D., G. Watters and C.S. Reiss
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The role of fish as predators of krill (Euphausia superba) and other pelagic resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)
Paper Title: The role of fish as predators of krill (Euphausia superba) and other pelagic ... : Krill forms an important part of the diet of many Antarctic fish species. An understanding of the role ... of fish as krill predators in the Southern Ocean is critical to understanding how changes in fish ... region. First attempts to estimate the krill and pelagic food consumption by Antarctic demersal fish in ... predators, nor does it provide data on the effect of exploitation on fish as preda- tors of krill. As a ... summer data (Table 9). Winter data with respect to krill feeding species were available only for N ... Science, Vol. 19 (2012): 115–169 115 THE ROLE OF FISH AS PREDATORS OF KRILL (EUPHAUSIA SUPERBA) AND ... Road Cambridge CB3 0ET United Kingdom M.A. Collins Director of Fisheries/Senior Executive ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 115–169 : Autor(es): Kock, K.-H., E. Barrera-Oro, M. Belchier, M.A. Collins, G. Duhamel, S. Hanchet, L. Pshenichnov, D. Welsford and R. Williams
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A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem
Paper Title: A first step towards modelling the krill–predator dynamics of the Antarctic ... ecosystem Abstract / Description: The history of human harvests of seals, whales, fish and krill in the ... Antarctic is summarised briefly, and the central role played by krill emphasised. The background to the ... hypothesis of a krill surplus in the mid-20th century is described, and the information on population and ... reassessed the economic viability of their krill fisheries. A total of 6.1 million tonnes of krill was ... first step towArds modelling the krill–predAtor dynAmics of the AntArctic ecosystem M. Mori MARAM ... , whales, fish and krill in the Antarctic is summarised briefly, and the central role played by krill ... emphasised. The background to the hypothesis of a krill surplus in the mid-20th century is described, and ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Autor(es): Mori, M. and D.S. Butterworth
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Environment–krill relations in the South Georgia marine ecosystem
agrees with other data which give direct or indirect indications of krill availability, suggesting it can ... Paper Title: Environment–krill relations in the South Georgia marine ecosystem Abstract ... study, time series of krill abundance (CPUE) indices were derived from Soviet fishing operations in the ... atmospheric components of the system, and there are also correlations with CPUE data. The CPUE index generally ... generally agrees with other data which give direct or indirect indications of krill availability ... krill concentration (British Antarctic Survey, unpublished data). In such areas krill fishing will ... number of fishing days by each vessel type. There were no data available for 1982. Krill fishing was ... Soviet vessels fish for krill during November or December, but catch data were not available for ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 13–30 : Autor(es): Fedoulov, P.P., E. Murphy and K.E. Shulgovsky
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Factors to consider in developing management measures for krill
krill fisheries. Various possible elements of procedures such as reactive, predictive, and feedback ... Paper Title: Factors to consider in developing management measures for krill Abstract ... steps for the evolution of management procedures for krill fisheries. Various possible elements of ... krill should favour steady fisheries which are ecologically sustainable as well as economically ... importance of the fisheries. The strategy approaches outlined in this document all have various advantages ... WG-KRILL-90/14 FACTORS TO CONSIDER IN DEVELOPING ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 175–187 : Autor(es): de la Mare, W.K.
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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 ... recruitment through pre-recruit mortality. A parameter mediating the effect of a forcing function on krill ... plausible alternative hypotheses in data-poor situations. Apparent sensitivity is a function of both input ... statistics in a krill–predator–fishery ecosystem dynamics model multiple simulations and data processing. As ... krill, and it has an obli- gation to consider the effects of all fisheries on related and dependent ... validating and tuning operating models for krill fishery manage- ment in Area 48. Document WG-EMM-08/10 ... provide advice to CCAMLR on the spatial allocation of the Antarctic krill catch limit for the Scotia Sea ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Autor(es): Hill, S.L. and J. Matthews
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Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons and nations
Paper Title: Fishing ground selection in the Antarctic krill fishery: trends in patterns across ... characterised using STATLANT and CCAMLR fine-scale data. Among the 15 small-scale management units (SSMUs ... remained relatively constant in Subareas 48.2 (March–May) and 48.3 (June–August). In 25 years of krill ... of high krill density observed by scientific surveys, and possible reasons for this mismatch are ... -scale catch and effort data). The STATLANT database contains all reported krill catches at FAO ... haul-by-haul data held in the National Research Institute of Far Seas Fisheries (Japan) for a more ... this area (Figure 4). Krill recruitment and abundance using scien- tific net-haul data in the South ... characteristics of these newly introduced methods by the new entrants to the krill fishery. The data submission ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 117–141 : Autor(es): Kawaguchi, S., S. Nicol, K. Taki and M. Naganobu
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Sea-surface temperature and krill catches around South Georgia in December–February 1989–1991 and 1999–2001
Paper Title: Sea-surface temperature and krill catches around South Georgia in December–February ... . Analyses of the data at the beginning of each summer season could enable us to evaluate the potential for ... conducting a krill fishery in the area during the entire year. The reliability of these forecasts could be ... appraised by comparing them with krill catches obtained under various hydrological conditions. In comparison ... –1991 and 1999–2001. Corresponding krill catch data from Subarea 48.3 were taken from CCAMLR reports ... : 74–85 (in Russian). Ramm, D. and E. Appleyard. 2001. Krill fi shery in- formation. Document WG ... . 9 (2002): 165–172 165 SEA-SURFACE TEMPERATURE AND KRILL CATCHES AROUND SOUTH GEORGIA IN DECEMBER ... the data at the beginning of each summer season could enable us to evaluate the potential for ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 165–174 : Autor(es): Vanyushin, G.P
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Quantifying movement behaviour of vessels in the Antarctic krill fishery
/ Description: Ten years of recent fine-scale haul-by-haul krill data were used to characterise the behaviour ... analyses demonstrate the need for high-quality year-round data on all vessels participating in the krill ... Paper Title: Quantifying movement behaviour of vessels in the Antarctic krill fishery Abstract ... of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed a ... -scale haul-by-haul krill data were used to characterise the behaviour of the krill fishery. Analysis of ... high-quality year-round data on all vessels participating in the krill fishery to assist in ... through analysis of actual operational data need to be updated because the krill fishery has changed ... haul-by haul data from the krill fishery, this study aims to: (i) analyse movement patterns of krill ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 131–148 : Autor(es): Kawaguchi, S. and S.G. Candy
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On the intensity of sampling krill trawl catches
uses actual krill length-frequency data in an attempt to address the problem of the determination of ... Paper Title: On the intensity of sampling krill trawl catches Abstract / Description: This paper ... adequate sample size to obtain representative krill length-frequency distributions from commercial catches ... influence length-frequency data quality is also considered. Attention is drawn to the following: • all ... krill que ce document tente de resoudre le probleme de la determination de la taille de l'echantillon ... WG-KRILL-90/27 ON THE INTENSITY OF SAMPLING KRILL TRAWL ... CATCHES D.G.M. Miller* Abstract This paper uses actual krilllength-frequency data in an attempt to ... address the problem of the determination of adequate sample size to obtain representative krill length ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 29–48 : Autor(es): Miller, D.G.M.