Résultats de la recherche
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Comparative studies on the biological and acoustical properties of krill aggregations (Euphausia superba Dana) samples during the XIII Italian Expedition to the Ross Sea (December 1997–January 1998)
(December-January 1997-98), for biological validation of hydroacoustic recordings, 35 net samplings were ... carried out. For all hauls both parameters: biological (length AT, sex and maturity stage of the gonads of ... ). The analysis of acoustic and catch data indicate that: (1) the acoustic discrimination between the two ... sphere method, is 20-100 times higher than the one estimated from the catch. The geographical biomass ...
Meeting Document : WG-EMM-00/39 : Auteur(s): M. Azzali, J. Kalinoswki, G. Lanciani and I. Leonori (Italy)
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IMPLEMENTATION OF FOOSA (KPFM) IN THE EPOC MODELLING FRAMEWORK TO FACILITATE VALIDATION AND POSSIBLE EXTENSION OF MODELS USED IN EVALUATING KRILL FISHERY HARVEST STRATEGIES THAT WILL MINIMISE RISK OF LOCALISED IMPACTS ON KRILL PREDATORS
Abstract: This paper details how FOOSA, an operating foodweb model for evaluating spatially ... -structured harvest strategies for krill, has been implemented within the EPOC modelling framework. It also ... shows how the parameters developed for use in FOOSA can be adapted for use in EPOC. The paper has three ... main parts – an outline of the structure of EPOC, consideration of the general FOOSA structure that ...
Meeting Document : WG-SAM-08/15 : Auteur(s): A. Constable (Australia)
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Semi-empirical acoustic estimates of krill biomass derived from simulated commercial fishery data based on single-frequency acoustics
the 3-frequency method using the CCAMLR protocol for the period between 1996 and 2011 in both the ... between these two areas and the 3-frequency biomass showed that models developed using a wide length ... long to average out differences among years. Author(s): A.M. Cossio, G.W. Watters, C.S. Reiss, J ... simulated commercial fishery data based on single-frequency acoustics Approval: Approved ...
Meeting Document : SG-ASAM-12/04 : Auteur(s): A.M. Cossio, G.W. Watters, C.S. Reiss, J. Hinke and D. Kinzey (USA)
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Semi-empirical acoustic estimates of krill biomass derived from simulated commercial fishery data based on single-frequency acoustics
the 3-frequency method using the CCAMLR protocol for the period between 1996 and 2011 in both the ... between these two areas and the 3-frequency biomass showed that models developed using a wide length ... long to average out differences among years. Author(s): A.M. Cossio, G.W. Watters, C.S. Reiss, J ... simulated commercial fishery data based on single-frequency acoustics Approval: Approved ...
Meeting Document : SG-ASAM-15/03 : Auteur(s): A.M. Cossio, G.W. Watters, C.S. Reiss, J. Hinke and D. Kinzey (USA)
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Updated models of the habitat use of Patagonian toothfish (Dissostichus eleginoides) on the Kerguelen Plateau around Heard Island and the McDonald Islands (Division 58.5.2)
sex composition, when controlling for gear selectivity, year and sex effects. Fish length increased ... Abstract: The Kerguelen Plateau supports the largest fishery for Patagonian toothfish ... movement stand out as the priority for future research into the biology and management of Patagonian ... toothfish drawn from biological data collected in the HIMI area (Division 58.5.2) on more than 500,000 fish ...
Meeting Document : WG-FSA-14/42 : Auteur(s): C. Péron and D.C. Welsford (Australia)
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CCAMLR conservation measures: alternative approaches for fishery measures
CCAMLR conservation measures: alternative approaches for fishery measures ...
Meeting Document : CCAMLR-XX/20 Rev. 1 : Auteur(s): Secretariat
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Spatio–temporal dynamics in maturation and spawning of Patagonian toothfish Dissostichus eleginoides on the subantarctic Kerguelen Plateau
mature females did not spawn every year. Age-at-maturity estimates, obtained based on the assumption that ... fish of macroscopic stages ≥ 2 were mature, decreased between the 2004–2009 and 2010–2015 periods for ... : Approved Secretariat Workflow Status: Content Approved Delegation responsibility for releasing documents ... Sector of the Southern Ocean based on gonads and otoliths collected between years 2004–2015, and using ...
Meeting Document : WG-FSA-17/P04 : Auteur(s): P. Yates, P. Ziegler, D. Welsford, J. McIvor, B. Farmer and E.Woodcock
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Review of CCAMLR activities on monitoring marine debris in the Convention Area
the lowest levels on record being reported for the 2005 season. This increased to 10 entanglements in ... Database contains data from 12 sites, most within Area 48. There are 4 sites that have data for more than 3 ... Abstract: The current status of national surveys on monitoring of marine debris and their impact ... on marine mammals and seabirds in the Convention Area has been reviewed. The CCAMLR Marine Debris ...
Meeting Document : SC-CAMLR-XXV/BG/09 : Auteur(s): Secretariat
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Report on the effectiveness of integrated weight (fast sinking) longlines in reducing the mortality of white-chinned petrels and sooty shearwaters in autoline longline fisheries
sooty shearwaters (Puffinus griseus) killed by unweighted longlines (UW; mean sink rate to 20 m depth ... for each pair of magazines or lines by counting dead birds during line hauling. In 2002 80 white ... conducted in the seabird breeding seasons (October/November) of 2002 and 2003 on F/V’s Janas and Avro ... streamer line was deployed on all sets. Differences between IW and UW lines in the catch rates of white ...
Meeting Document : WG-FSA-04/72 : Auteur(s): G. Robertson (Australia), N. Smith (New Zealand), B. Wienecke and S. Candy (Australia)
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Measures to avoid bias in abundance estimates of Dissostichus spp. based on tag-recapture data
Abstract: Using the simplest form of an abundance estimator using tag-recapture data, the Lincoln ... difficulty in accurately estimating key parameters, and consequently introduce bias into an abundance ... against this bias, or to account for their effects in assessment models. In nearly all cases, examples of ... depredation rates are a priority for new tagging programs and tag-based assessments. Due to the complexity of ...
Meeting Document : WG-SAM-12/23 : Auteur(s): D.C. Welsford and P.E. Ziegler (Australia)