Resultados de la búsqueda
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Short communication: Diet composition of deepwater icefish Chionobathyscus dewitti Andriashev et Neelov, 1978 (Chionobathyscus, Channichthyidae) from the Ross Sea area
analyzed icefish individuals were taken from stomachs of toothfish caught in the Ross Sea in 2010 from ... board the longliner “ No. 1 IN SUNG ”. Author(s): A.F. Petrov (Russia) Title: Short communication ...
Meeting Document : WG-FSA-10/11 : Autor(es): A.F. Petrov (Russia)
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Alternative method of the age composition assessment on the basis of surveys length data using mixture distributions
2000, 2002, 2004 in the South Georgia area, it is demonstrated that the method by Aitchison and ... bootstrap method result in different estimates of mean fish density in the length series. Verification of ... Mare commonly used by CCAMLR in icefish age composition of abundance indices determination. To solve ...
Meeting Document : WG-FSA-05/78 : Autor(es): P. Gasyukov (Russia)
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A review of models of Southern Ocean ecosystems: krill, ecosystems and the impacts of harvesting
Abstract: An ecosystem approach for the management of human activities in the Southern Ocean is ... enshrined in the principles of the Commission for the Conservation of Antarctic Marine Living Resources ... in the world. The main categories we consider are models of krill populations and life cycles ... , predator-prey models and models of ecosystems. A range of approaches has been developed in each of these ...
Meeting Document : WG-EMM-04/67 : Autor(es): S.L. Hill, E.J. Murphy, K. Reid, P.N. Trathan (United Kingdom), A. Constable (Australia)
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Sampling toothfish from longlines with unequal probabilities
with less catch effort than those outside; or more generally, sampling effort is applied in inverse ... unequal probabilities which, if unaccounted for, can lead to serious biases in estimates of population ... vital rates. To resolve this, either the probabilities need to be incorporated in the analysis of ... start a session. Because there is little evidence of a consistent trend in fish sampled over a line, it ...
Meeting Document : WG-FSA-03/85 : Autor(es): J.R. Ashford (USA)
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Are krill recruitment indices from meso-scale survey representative for larger areas?
Abstract: The present contribution uses data from German surveys in the 1980’ies and the US LTER ... programme which continuously collected krill demography data since 1993 during the austral summer season in ... ) and two-year old (R2) krill differ substantially between years. However, results were in conformity ... classes of the age-one-group which occur in the samples of some years. Author(s): V. Siegel (Germany ...
Meeting Document : WG-EMM-02/20 : Autor(es): V. Siegel (Germany), R.M. Ross and L.B. Quetin (USA)
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Fecundity and size at sexual maturity of the bigeye grenadier (Macrourus holotrachys) at South Georgia (CCAMLR Subarea 48.3)
Abstract: Fecundity and size at sexual maturity were investigated in 486 bigeye grenadier ... , Macrourus holotrachys caught as bycatch in the Patagonian toothfish longline fishery conducted around South ... final ovarian development is a prolonged process in M. holotrachys which probably lasts for a period of ... greater than a year. Sex ratios of specimens caught in the longline fishery are highly skewed with females ...
Meeting Document : WG-FSA-02/26 : Autor(es): T. Mulvey, S.A. Morley, M. Belchier and J. Dickson (United Kingdom)
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Systematic Biodiversity Planning to identify a potential offshore Marine Protected Area network for South Africa
network in order to represent offshore biodiversity, protect vulnerable ecosystems, contribute to ... fishery and bycatch management areas. In addition, the project has engaged with offshore stakeholders from ... the outset, has overcome significant challenges in engaging petroleum, diamond mining and fisheries ... sectors and has built some support for offshore MPAs. Considerable challenges remain in the implementation ...
Meeting Document : WS-MPA-11/11 : Autor(es): K. Sink, M. Lombard (South Africa), H. Grantham (Australia), C. Attwood, R. Leslie, T. Samaai, S. Kerwath, T. Fairweather, C. van der Lingen, L. Atkinson, T. Wolf and P. Majiedt (South Africa)
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AN UPDATED DESCRIPTION AND PARAMETERISATION OF THE SPATIAL MULTI-SPECIES OPERATING MODEL (SMOM )
-predator-fishery dynamics is described. This has been developed in response to requests for scientific ... management units (SSMUs) in the Scotia Sea, to reduce the potential impact of fishing on land-based predators ... . The model includes krill as prey and four predator groups (penguins, seals, fish and whales) in each ... combinations of model parameters essentially try to bound the uncertainty in, for example, the choice of ...
Meeting Document : WG-SAM-08/17 : Autor(es): É.E. Plagányi and D.S. Butterworth (South Africa)
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Using mark-recapture and catch-age data to estimate fishing and natural mortality for the Patagonian toothfish at South Georgia
natural mortality, and integrates catch-at-age data into the estimation model, to aid in distinguishing ... analysed with the model. The ages covered by the analysed cohorts ranged from 5 to 13. In the model runs ... be lower than those estimated in previous stock assessments using both mark-recapture and catch data ... . There was additionally some suggestion of agestructure in the natural mortality-at-age. Author(s): R.M ...
Meeting Document : WG-FSA-SAM-06/06 : Autor(es): R.M. Hillary and D.J. Agnew (United Kingdom)
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Potential VMEs around Elephant and the South Shetland Islands (Subarea 48.1)
in the South Shetland Islands area. High biomass densities of VME indicator taxa, meeting the 10 kg ... new ‘diversity threshold’ is proposed in order to protect those VME taxa that do not occur in the ... Appendix II listed Antipatharia (black coral), which in the authors’ experience has never occurred at a ...
Meeting Document : WG-EMM-12/51 : Autor(es): S.J. Lockhart (USA), N. Wilson (Australia) and E. Lazo-Wasem (USA)