Resultados de la búsqueda
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Precautionary management of the Antarctic krill fishery at small spatial scales in the context of regional climate variability: pros and cons of coastal buffers, closed areas and move-on rules
30,000 tonnes, but that this catch could be recovered either offshore, or after penguin breeding is ... were such, that gentoo reproductive performance was lower than average, and at some locations ... plausible that removals of even small amounts of krill could have reduced foraging opportunities. We discuss ... three management tools that could provide conservation benefits for near-shore krill-dependent species ...
Meeting Document : SC-CAMLR-XXXV/BG/14 : Autor(es): Delegation of the United Kingdom
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A simple approach for calculating the potential yield of krill from biomass survey results
for the calculations is that the probability that the krill spawning biomass drops below 20% of its ... relative values of the ages at maturity and first-capture. Seasonal effects seem to be of lesser importance ... suggested that a possible approach to the determination of appropriate yields might be to use the formula ... model for the length of kriU of age (a+t) years may be written: 208 { .e .. [ 1-e -(3(a+ot)] .e ... . The reason is that, in practice, such a strategy could only be implemented in the form of fixed ... the likelihood that further surveys will take place, and that their results could also be ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 207–217 : Autor(es): Butterworth, D.S., A.E. Punt and M. Basson
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Male krill grow fast and die young
examined with an extensive dataset derived from scientific surveys in the Indian Ocean sector and the ... ). This pattern was reproduced by a model simulation that assumed faster growth and a shorter life span ... for males when compared to females. These results suggest that the numbers of males should decline ... with time unless new recruits enter the population. Indeed, inter-annual variations in the proportion ...
Meeting Document : WG-EMM-07/P6 : Autor(es): S. Kawaguchi, L.A. Finley, S. Jarman, S.G. Candy (Australia), R.M. Ross, L.B. Quetin (USA), V. Siegel (Germany), W. Trivelpiece (USA), M. Naganobu (Japan) and S. Nicol (Australia)
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Beach debris survey, Signy Island, South Orkney Islands, 2003/04
bands, the fact that they continue to appear as beach debris indicates that the ban on their use aboard ... , followed by wood at 24%. The results of this seasons litter survey, clearly shows that the longevity of ... plastics and other materials with a high resistance to degradation in the marine environment remains a ... problem and highlights the need for continued monitoring to ensure that vessels are aware of, and comply ...
Meeting Document : SC-CAMLR-XXIII/BG/15 : Autor(es): Delegation of the United Kingdom
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Spatio–temporal dynamics of Antarctic krill fishery: identification of fishing hotspots
that the catch density (ton∙km-2) inside the FHs is correlated with the total catch obtained ... subarea. Despite that the fishery is operating in the Antarctic Peninsula area since 1980s, the spatial ... , in this case, fishing hotspots (FH), combined with a temporal analysis to assess persistence of these ... FHs. Results indicate that the fishery is presenting consistent FH across years, particularly during ...
Meeting Document : WG-EMM-16/52 : Autor(es): F. Santa Cruz, B. Ernst and J.A. Arata
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Genetic variations and population structure of krill from the Prydz Bay region of Antarctic waters
consistent with the hypothesis that all samples were derived from a single breeding population of krill. The ... results of this study agree closely with genetic data from other studies on krill in the Atlantic sector ... of the Southern Ocean, suggesting that krill stocks over at least 6000 kilometres of Antarctic waters ... result consistent with the hypothesis that all samples were derived from a single breeding population ... of krill. The results of this study agree closely with genetic data from other studies on krill in ... the Atlantic sector of the Southern Ocean, suggesting that krill stocks over at least 6000 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 271-273 : Autor(es): MacDonald, C.M., R. Williams and M. Adams
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Population trends of albatrosses and petrels at sub-Antarctic Marion Island
. Population trends of wandering albatross at Marion Island were strongly correlated with other Indian Ocean ... and can be explained by changes in tuna (Thunnus spp.) longline fishing effort in the southern Indian ... , could be contributing to the recent decreases in some of these species. Adoption of mitigation measures ... and an effective means of dealing with IUU longline fishing seem necessary to reduce the potential ...
Meeting Document : WG-FSA-01/11 : Autor(es): D.C. Nel, P.G. Ryan, R.J.M. Crawford, J. Cooper and O. Huyser (South Africa)
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An exploratory fishing expedition for Dissostichus eleginoides around the South Sandwich Islands, Antarctica
with a view to opening a new fishery under the auspices of the Commission for the Conservation of ... between the Governments of Chile and the UK. A new fishery in Subarea 48.4 was found not be commercially ... viable due to an extremely low catch per unit of 5.37 g/hook. The low numbers of fish found may be been ... ) georgiana. Interactions between fishing operations and seabirds were also examined, with no incidental ...
Meeting Document : SC-CAMLR-XII/BG/04 : Autor(es): Delegations of Chile and United Kingdom
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Research plan for exploratory fishing for toothfish (Dissostichus spp.) in East Antarctica (Divisions 58.4.1 and 58.4.2) by Australia
rules remain to be determined for these Divisions. Accordingly, a research plan has been developed under ... with the exception of responses to Agenda Item No. 3.12 of the Draft Report of the WG-SAM-15 ... (highlighted in blue). Standardised longline fishing, in conjunction with fish biological measurements, tagging ... and aging, will be used to develop a stock assessment for these divisions and inform the necessary ...
Meeting Document : WG-FSA-15/47 Rev. 1 : Autor(es): Delegation of Australia
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Research program to examine the life-cycle and resource potential of Dissostichus species in the Special Research Zone within the Ross Sea region Marine Protected Area (RSRMPA) in 2017–2027
program in the frame of the research and monitoring associated with the RSRMPA. Russian research program ... slope within the Subarea 88.2 A. The tagging toothfish and recapture tagged fishes to be in focus. The ... . Proposals include the priority elements for scientific research and monitoring associated with the Ross Sea ... region marine protected area. The research program shall be conducted in the Special Research Zone ...
Meeting Document : WG-FSA-17/26 : Autor(es): Delegation of the Russian Federation