Résultats de la recherche
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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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): 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 : Auteur(s): S.J. Lockhart (USA), N. Wilson (Australia) and E. Lazo-Wasem (USA)
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Joint CEP/SC-CAMLR workshop (2016) on climate change and monitoring
hold a second Joint CEP/SC-CAMLR Workshop in 2016. The agreed general scope of the workshop is to ... CEP and SC-CAMLR. At its meeting in 2015, the CEP discussed the workshop Terms of Reference, Steering ... Committee and workshop participation, and its possible location and timing. In order to make further ... progress on planning for the 2016 joint workshop, we encourage WG-EMM to: Consider items to be included in ...
Meeting Document : WG-EMM-15/18 : Auteur(s): S. Grant (UK) and P. Penhale (USA)
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Preliminary report on krill survey off the coast of East Antarctica (Enderby Land to Prydz Bay) February-March 2015
mammals in East Antarctica. The small scale variability of prey in key foraging locations near to land ... -based colonies of penguins and flying seabirds in East Antarctica. Feasibility and potential of ... better understand the ecosystem in the region. The survey completed 5 acoustic box surveys including a ...
Meeting Document : WG-EMM-15/22 : Auteur(s): S. Kawaguchi, A. Constable, L. Emmerson, C. Southwell, R. King, K. Westwood and K. Swadling (Australia)
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Domain 1 MPA designation process: data sharing and future enhanced work
Abstract: During the last years, a large amount of information was gathered and shared in one ... unique project for the development of a representative system of MPAs in Domain 1. This process ... collaboration and cooperation amongst Members involved in the development was built. However, there are still a ... became involved in the development of the MPA proposal and contribute to the state of knowledge. This ...
Meeting Document : WG-EMM-16/73 : Auteur(s): M. Santos, A. Capurro and C.A. Cárdenas