Résultats de la recherche
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the years 1997–98 to 2010–13
models were examined including an update of the 2011 base case (R1), a model using the revised data ... selection method, new maturity ogive, and new data weighting method (R2), and a model which used a logistic ... profiles suggest that the tag recapture data from the last few years tend to push the model toward a higher ... SSRU88.1K which has a comparably high biomass but a shorter catch history (therefore fewer tags available ...
Meeting Document : WG-FSA-13/51 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Cetaceans as indicators of historical and current changes in the East Antarctica ecosystem
whale, which had not been exploited on a large scale. A review of the scientific information in East ... minke whale, resulting in a decreasing trend in the age at sexual maturity of this species between ... approximately 1940 and 1970. A low age at sexual maturity favored an increase in the recruitment rate and total ... population size in a similar period. The evidence available since the 1980’s showed a sharp increase in the ...
Meeting Document : WG-EMM-16/64 : Auteur(s): Y. Fujise and L.A. Pastene
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Report on attendance at the Sixth Meeting of the Committee for Environmental Protection Under the Madrid Protocol
issues of relevance to SC-CAMLR are: (a) The CEP again addressed the issue of establishing “Specially ... (with those organizations) to seek a common approach as to how special protection for species in the ... of this Annex, no native marine species shall be designated as a Specially Protected Species without ... a result all protected areas must be reviewed and revised management plans for each Specially ...
Meeting Document : CCAMLR-XXII/BG/11 : Auteur(s): Chair of the CCAMLR Scientific Committee
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Longline fishing at Tristan da Cunha: impacts on seabirds
important seabird populations. Two longline fisheries occur within Tristan's Exclusive Economic Zone: a ... pelagic fishery for tunas and a demersal fishery for bluefish and alfoncino. Fishery observers have ... lines during the day, only one bird (a Great Sheawater Puffinus gravis) was killed (mortality rate 0.001 ... effort, probably has a much greater impact. Observations aboard one vessel in mid-winter suggest a ...
Meeting Document : WG-FSA-01/15 : Auteur(s): N. Glass, I. Lavarello, J.P. Glass and P.G. Ryan (South Africa)
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Oil, marine debris and fishing gear associated with seabirds at Bird Island, South Georgia 1995/96
grey-headed albatrosses (two items). One gentoo penguin chick was released from entanglement in a ... packaging band; another (uncut) band was found at a nest of a northern giant petrel. Parts of fishing gear ... albatrosses (one bird impaled with a long-line hook, another hook found at a nest) and wandering albatrosses ... hooks, is a continuing cause for concern. Author(s): Delegation of the United Kingdom Title: Oil ...
Meeting Document : SC-CAMLR-XV/BG/04 : Auteur(s): Delegation of the United Kingdom
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The application of CCAMLR Ecosystem Monitoring Program (CEMP) standard methods in the Antarctic site inventory project
landing beaches where visitors access a site, allowing comparisons over time between areas that have much ... human activity and those without such activity. A power analysis indicates the Inventory's ... Inventory to detect a 10% or 20% change in a parameter with a significance level as. 01 and a statistical ...
Meeting Document : WG-EMM-97/38 : Auteur(s): Naveen, R.
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Entanglement in man-made debris of Antarctic fur seals at Bird Island, South Georgia
as part of an ongoing study by the British Antarctic Survey. A minimum of 8 seals were sighted ... ). During the summer pup-rearing period a minimum of 30 entangled seals were reported, 26 (87%) of which had ... their collars removed. This represents a reduction of 88% in the number of entangled seals reported in ... entanglement include a reduction in fishing activity in the South Georgia area, a decrease in the amount of ...
Meeting Document : CCAMLR-X/BG/05 : Auteur(s): Delegation of UK
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Population assessment of Patagonian toothfish in the north of Subarea 48.4 – 2010 update
. eleginoides tag recaptures in 2009/10, a total of 72 in all seasons; The length-frequency of 2009/10 captures ... is consistent with the theory that the bulk of the biomass is dominated by a small number of cohorts ... . CASAL estimates a large recruitment event in early the early 1990s and faster growth rates than those ... 48.4 are very similar to that from the previous season with a B 0 of 1,123 t (compared to 1,127 t in ...
Meeting Document : WG-FSA-10/39 : Auteur(s): J. Roberts and D. Agnew (UK)
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Seamount-specific biomass estimates from SSRU 88.2H in the Amundsen Sea derived from mark-recapture data
calculated for SSRU 88.2H as a whole. The analyses indicate that: Fish seldom move among seamounts within the ... overall showed a decline in biomass through time with a slight increase in biomass since 2012. The pattern ... in recapture rates of annual cohorts of tagged fish through time in SSRU 88.2H indicates a decrease ... catch and emigration of tagged and untagged fish resulting in a decreasing trend in biomass overall ...
Meeting Document : WG-FSA-14/58 : Auteur(s): S.J. Parker and S. Mormede (New Zealand)
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Development of methods relevant to feedback management (FBM) for the krill fishery
environment essential for the implementation of a Feed-Back Management (FBM) system. In terms of FBM, Marine ... krill density, distribution, availability and predator needs. A future developed FBM system, as ... during the fishing season as a measure of the available prey field. This information can be integrated ... summer 2018-2019. Author(s): B.A. Krafft, A. Lowther, G. Macaulay, M. Chierici, M. Biuw, A. Renner, T.A ...
Meeting Document : WG-EMM-18/08 : Auteur(s): B.A. Krafft, A. Lowther, G. Macaulay, M. Chierici, M. Biuw, A. Renner, T.A. Klevjer, R. Øyerhamn, C.A. Cárdenas, J. Arata, A. Makhado, C. Reiss and O.A. Bergstad