Resultados de la búsqueda
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Defining smaller-scale management units to further develop the ecosystem approach in managing large-scale pelagic krill fisheries in Antarctica
define predator units. The derived conceptual model is then used to formulate an approach for developing ... local restrictions on harvesting are necessary, as well as the overall requirements for the monitoring ... the principles and approach required for developing small-scale management units to take account of ... predators’ needs when managing the fishery for Antarctic krill. It provides a theoretical foundation for ... conceptual model is then used to formulate an approach for developing fi sheries on prey species, notably ... restrictions on harvesting are necessary, as well as the overall requirements for the monitoring program ... of predators in an ongoing management framework for a fully developed fi shery (Constable et al ... been resolved, despite early consideration of the options that could be used to provide for an ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 117–131 : Autor(es): Constable, A.J. and S. Nicol
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2002 winter and 2002/03 breeding season
observations), the reasons for this are discussed. Of the entanglements where the animal could be sexed, males ... Georgia for the thirteenth consecutive winter (2002) and fifteenth consecutive summer (2001/02) are ... %. Severe injuries accounted for 33% of entanglements over winter and 25% during the summer. As in previous ... years, most individuals observed entangled in debris were juveniles (88% of winter and 81% of summer ...
Meeting Document : SC-CAMLR-XXII/BG/11 : Autor(es): Delegation of the United Kingdom
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Estimating krill recruitment and its variability
for 2+ krill (the ratio of the number of two-year-old krill to the number aged two and above) from ... rate for 1+ krill (the ratio of the number of krill aged one year to the number of krill aged one year ... likelihood method is developed for the decomposition of krill density-at-length data into the proportion of ... and above) of 0.339 with a standard deviation (SD) of 0.100. The corresponding result for recruitment ... with R(t) estimated for both putative one- and two-year-old age classes. above data, and four age ... classes in fitting to two- densities for each length calculated using year-old and above. equation (6 ... method for determining numbers-at-age is based on the decomposition of length frequency distributions ... estimated in fitting the model, and ensures an orderly relationship between the variance estimated for ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 55–69 : Autor(es): de la Mare, W.K
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Breeding and post-breeding foraging locations of Adélie penguins at Hope Bay/Esperanza, Antarctic Peninsula
dispersal are consistent across years, suggesting that the Bransfield- Weddell shift region is an important ... /Esperanza, during the late part of the breeding season and their subsequent post breeding dispersal in two ... consecutive years. We also compare data from the krill fishery to describe Adélie penguin foraging areas with ... colony and in the northern Bransfield Strait/Mar de la Flota in both years. During the pre-moulting ...
Meeting Document : WG-EMM-14/42 : Autor(es): M.M. Santos (Argentina), P.N. Trathan (UK), S. Thanassekos (Secretariat), E.F. Rombolá, M.A. Juáres (Argentina), K. Reid (Secretariat) and J.T. Hinke (USA)
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Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass
needs to be estimated prior to each trial in order for it to be based on the parameters for that trial ... method for correcting this bias in the level of escapement. The GYM uses an unbiased estimate of the ... median unexploited spawning biomass Abstract / Description: Two Monte Carlo simulation models, the krill ... for estimating yields according to decision rules that relate spawning stock status to the median ... and for three levels of y - 0.15, 0.2 and 0.4. Projections for 20 years and 30 years were undertaken ... perio . Table 2: Escapement of spawning biomass at the end of 20 and 30-year projections for different ... spawning biomass after 20 and 30 years relative to median So in each run with no fishing was 1.099 and ... : The probability of depleting the spawning biomass during 20-year projections for different levels of y ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 1–8 : Autor(es): Constable, A.J. and W.K. de la Mare
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CCAMLR-XXVI
Resources Secretariat CCAMLR-XXVI/20 Notifications of South Africa’s intention to conduct an exploratory ... statements for 2006 Executive Secretary CCAMLR-XXVI/30 The orderly development of the krill fishery ... Delegation of Australia CCAMLR-XXVI/31 Compliance requirements for an orderly development of the krill ... Performance reviews for Regional Fisheries Management Organisations Secretariat CCAMLR-XXVI/BG/11 On the ...
Meeting
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Krill catches and consumption by land-based predators in relation to distance from colonies of penguins and seals in the South Shetlands and South Orkneys
are used to show that for some years, months and zones of distance from the shore the catch of krill ... Abstract: Zones of 20 km width are defined around selected colonies of penguins distributed ... to have a consistent pattern in Subarea 48.1 but an unpredictable distribution in Subarea 48.2 ... March was taken within 40 km of the coast, and 90% within 80 km in all years 1988-1990. In 1987 and 1988 ...
Meeting Document : SC-CAMLR-X/BG/07 : Autor(es): Secretariat
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Krill catches and consumption by land-based predators in relation to distance from colonies of penguins and seals in the South Shetlands and South Orkneys, 1987-1990
for some years, months and zones of distance from the shore the catch of krill is 50% or more of the ... Abstract: Zones of 20 km width are defined around selected colonies of penguins distributed ... to have a consistent pattern in Subarea 48.1 but an unpredictable distribution in 48.2, probably as a ... within 40 km of the coast, and 90% within 80 km in all years 1988-1990. In 1987 and 1988 75% of the catch ...
Meeting Document : WG-CEMP-91/25 : Autor(es): D.J. Agnew (Secretariat)
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Assessment of Patagonian toothfish (Dissostichus eleginoides) in Subarea 48.3
recent years. Projections indicate that a constant catch of 2,420 tonnes in the 2020 and 2021 seasons ... responsibility for releasing documents: United Kingdom ...
Meeting Document : WG-FSA-2019/28 : Autor(es): T. Earl
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Do krill and salps compete? Contrary evidence from the krill fisheries
/ Description: Salp by-catch and krill discolouration ('green' krill) caused by active feeding on ... krill in the catches was evident when both salps and krill were taken together. In the Livingston Island ... clear relationship was observed in the Elephant Island area. Possible reasons for these phenomena are ... Recently, an hypothesis of competition for primary production between salps and krill has been proposed ... salp densities is shown in Figure 5. The estimates for each area were standardised to February and an ... salps, however, indicates an effect on availability of phytoplankton to krill. In the Elephant Island ... be active feeding grounds for krill, which effectively filters particles larger than 20 pm (Meyer ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 205–216 : Autor(es): Kawaguchi, S., T. Ichii, M. Naganobu and W.K. de la Mare