Resultados de la búsqueda
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Seasonal and interannual variability of krill, salp and other zooplankton populations in the northwest Antarctic Peninsula region: summer 2001 in relation to the Long-Term AMLR Data Set
Abstract: The US AMLR Program conducted large area surveys in the Elephant Island-South Shetland ... assess seasonal variations in distribution, abundance and demography of Antarctic krill (Euphausia ... field seasons to assess interannual variations. Mean and median krill abundance values in the Elephant ... Island area during the 2000/2001 field season were intermediate to highs in 1996 and lows in 1999 ...
Meeting Document : WG-EMM-01/45 : Autor(es): V. Loeb (USA)
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Using the EPOC modelling framework to assess management procedures for Antarctic krill in Statistical Area 48: evaluating spatial differences in productivity of Antarctic krill
evaluate management procedures for the Antarctic krill fishery. The key issues to be resolved in the ... development of a harvest strategy are whether (i) spatial differences in the productivity of krill give rise ... to differential affects on predators in different locations, (ii) movement of krill between locations ... ameliorate any local fluctuations in krill abundance and (iii) fishery behaviour could be constrained by ...
Meeting Document : WG-EMM-06/38 Rev. 1 : Autor(es): A.J. Constable (Australia)
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Review of the use of survey data and length-at-age models in the assessment of Dissostichus eleginoides in the vicinity of Heard Island and McDonald Islands (Division 58.5.2)
implications of this review to estimating the abundance of juvenile fish using CMIX. In addition, the paper ... examines how the latest length-at-age model for Dissostichus eleginoides (Patagonian toothfish) in 58.5.2 ... abundance of specific cohorts were sensitive to the number of cohorts assumed to be represented in the ... estimates of length at age, an independent estimate of relative abundance of cohorts present in any survey ...
Meeting Document : WG-FSA-06/44 Rev. 1 : Autor(es): D.C. Welsford, A.J. Constable and G.B. Nowara (Australia)
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Comparison of temperature situation near South Georgia in December–February, 1989–1990, 1990–1991, 1999–2000 and 2000–2001 on satellite data and information about krill catches in Subarea 48.3
Abstract: Monitoring of the sea surface temperature (SST) in Subarea 48.3 on satellite data (GOES ... -E, Meteosat), use of in situ data and the further analysis of the SST maps, maps of the SST ... anomalies and dynamics provide strictly special, but constant information on hydrological situation in the ... survey area. Analysis of this situation based on data obtained in expeditions, as well as literature and ...
Meeting Document : WG-EMM-01/11 : Autor(es): G. Vanyushin (Russia)
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Data from recent trawl surveys in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), reveal an unusual cohort structure in the mackerel icefish (Champsocephalus gunnari) population
Abstract: Surveys of mackerel icefish, Champsocephalus gunnari, was undertaken in Division 58.5.2 ... in the vicinity of Heard Island during September 2010 and April 2011, to provide information on the ... population dynamics of this species, and to provide a basis for an assessment of short-term annual yield in ... Division 58.5.2 to the west of 79o 20’ E using standard CCAMLR methods. A predicted in 2010, the strong 4 ...
Meeting Document : WG-FSA-11/22 : Autor(es): D.C. Welsford (Australia)
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Research plan for the exploratory fisheries for Dissostichus spp. in Division 58.4.1 in 2014/15
exploratory fishery of Dissostichus mawsoni in Subarea 58.4.1. The stock sizes for five research blocks ... was generally different from that using the CPUE method in each block. As we proposed at the WG-FSA ... operation for at least 3 years with the same sample size as decided at the last CCAMLR meeting in the ... current research blocks, in order to promote successful stock assessment. On the other hand, we ...
Meeting Document : WG-SAM-14/02 : Autor(es): Delegation of Japan
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Perfluorinated compounds in muscle tissues of Antarctic toothfish in Division 58.4.1 and 58.4.2 of Antarctic Sea
Abstract: We measured concentrations of 15 perfluorinated compounds (PFCs) in muscle tissues of ... Antarctic toothfish (n=113), and investigated accumulation patterns of PFCs in female and male muscles. The ... total PFCs (Σ 15 PFCs) were ND (not detected) to 2.98 ng/g wet weight (ww) in muscle tissues with 0.32 ... and female. The levels of PFCs in the present study are comparable to those reported in 31 fish ...
Meeting Document : WG-FSA-16/07 : Autor(es): Delegation of the Republic of Korea
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Estimates of local biomass, including estimates of uncertainty, for Antarctic (Dissostichus mawsoni) and Patagonian (Dissostichus eleginoides) toothfish in research blocks in Subareas 48.2, 48.6, 58.4 and 88.3
analysis includes Research Blocks in Subareas 48.2, 48.6, 58.4 and 88.3. Given the changes in CPUE-by ... -seabed area method parameter values that were agreed at WG-SAM-17, the estimates of biomass in the ... higher CPUE-by-seabed area estimates has also resulted in a greater overlap in confidence intervals with ... the Chapman estimates in some, but not all, of the Antarctic toothfish Research Blocks. Author(s ...
Meeting Document : WG-FSA-17/42 : Autor(es): CCAMLR Secretariat
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Scientific background document in support of the development of a CCAMLR MPA in the Weddell Sea (Antarctica) – Version 2017 – Reflection of the recommendations by WG-EMM-16 and SC-CAMLR-XXXV
Abstract: The CAMLR Scientific Committee in 2016 reviewed three scientific background documents ... in support of the development of a CCAMLR MPA in the Weddell Sea. Germany was asked to carry out ... further work, in particular regarding the issues and questions raised at WG-EMM-16 and SC-CAMLR-XXXV. Here ... protection-level scenarios. In this context, we show how the cost layer works. Subsequently, a revised Marxan ...
Meeting Document : SC-CAMLR-XXXVI/BG/28 : Autor(es): Delegation of Germany
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PRELIMINARY ASSESSMENT OF MACKEREL ICEFISH, CHAMPSOCEPHALUS GUNNARI, IN THE VICINITY OF HEARD ISLAND AND MCDONALD ISLANDS (DIVISION 58.5.2), BASED ON A SURVEY IN APRIL 2009, USING THE GENERALISED YIELD MODEL
Abstract: A survey of mackerel icefish, Champsocephalus gunnari, was undertaken in Division ... 58.5.2 in the vicinity of Heard Island in April 2009 to provide the information for an assessment of ... short-term annual yield in the 2009/2010 CCAMLR season. This paper provides a preliminary assessment of ... year class detected in the last two years’ surveys is now fully recruited as the 3+ cohort, and ...
Meeting Document : WG-FSA-09/33 : Autor(es): D.C. Welsford (Australia)