Resultados de la búsqueda
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Distributions and predator-prey interactions of macaroni penguins, Antarctic fur seals, and Antarctic krill near Bird Island, South Georgia
abundances but not of the abundance of macaroni penguins. 'We found no evidence that the fur seals or ... Abstract: We studied the distributions, abundances and interactions of macaroni penguins Eudyptes ... transects radiating from the breeding colonies of the vertebrate predators. We examined the relationships ... between the distributions of predators and their prey with respect to the abundance of krill in the water ...
Meeting Document : WG-CEMP-93/12 : Autor(es): G.L. Hunt, Jr (USA), D. Heinemann (USA) and I. Everson (United Kingdom)
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e-cc-xxix-a5.pdf
... that a full audit had been carried out on the 2009 Financial Statements. The report had identified no ... the Executive Secretary that there has been no formal, in-depth audit of the Secretariat’s data ... 000). It appears there is no available record of the Commission ever approving the investment of ... to 1 500 words, with no limit on annexed conservation measures, decisions or resolutions; • the
application/pdf attached to:SCAF-10Meeting Report : SCAF-10
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Demersal longlines with integrated weight: a preliminary assessment of sink rates, fish catch success and operational effects
. No operational effects of using IW lines were evident during the trial. IW longlines containing 50 g ... lines with weigh integrated into the rope fibres. The sink rates to 15 m depth of 9 mm demersal ... attached weights (6 kg/49 m) in the New Zealand ling fishery. Longlines with 0 g/m (unweighted), 25 g/m, 50 ... 0.353 m/s, respectively. The longline with externally attached weights sank at 0.32 m/s. IW longlines ...
Meeting Document : WG-FSA-02/22 : Autor(es): G. Robertson (Australia), M. McNeill, B. King (New Zealand) and R. Kristensen (Norway)
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Long-term observations from Antarctica demonstrate that mismatched scales of fisheries management and predator–prey interaction lead to erroneous conclusions about precaution
that can help conserve marine predators. Uncertainty about the impacts of fisheries removals on ... dependent predators bolsters this perspective, but consideration of the spatio-temporal scales over which ... are as precautionary as presumed. Antarctic krill are targeted by the largest fishery in the Southern ... penguin performance are predicted to be below the long-term average with a probability of 0.77. Catch ...
Meeting Document : WG-EMM-2019/11 : Autor(es): G.M. Watters, J.T. Hinke and C.S. Reiss
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Two decades of variability in krill predators at Bird Island, South Georgia and their potential as ecosystem indicators
Abstract: The breeding performance of seabirds and seals at Bird Island, South Georgia, in the ... monitoring programme. We examined the mechanistic relationships between, and patterns of inter-annual ... included foraging performance, offspring survival, offspring mass, the contribution of Antarctic krill ... Euphausia superba to the diet, and per capita reproductive performance (PRP: the product of offspring ...
Meeting Document : WG-EMM-12/16 : Autor(es): S.L. Hill, C.M. Waluda, H.J. Peat and S. Fielding (United Kingdom)
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Proposed continuation of a multi-Member longline survey on Antarctic toothfish (Dissostichus mawsoni) in Statistical Subarea 48.6 in 2018/19 by Japan, South Africa and Spain
2013 to enhance data collection and analysis in the Subarea 48.6. In the last WG-SAM Spain has proposed ... to join the former proposal in order to contribute to the data acquisition and to speed up the ... integrated assessments of the D.mawsoni stock in this subarea. The Working Group recommended that Spain ... should coordinate its research efforts with Japan and South Africa and encouraged the submission of a ...
Meeting Document : WG-FSA-18/34 : Autor(es): Delegations of Japan, South Africa and Spain
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Preliminary Results of a Bottom Trawl Survey Around Elephant Island in May/June 1986
only observed in N. c. neglecta, whereas very little or no spawning was evident for N. rossii, C ... of C. gunnari and Ch. rastrospinosus no major changes took place from February 1985 to May/June 1986 ...
Meeting Document : WG-FSA-86/01 : Autor(es): K.-H. Kock (FRG)
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Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island
while at shallower layer (20-50 m) at night. In the offshore foraging areas krill showed no diurnal ... . 2-3 km in horizontal distance) of higher densities (≥250g/m2). In the inshore foraging areas krill ... showed a diurnal vertical migration, tending to be at deeper depth range (50-100 m deep) in the day time ... vertical migration, staying close to the surface throughout the day. As for body size and maturity of krill ...
Meeting Document : WG-KRILL-92/27 : Autor(es): T. Ichii, H. Ishii (Japan), J.L. Bengtson, P. Boveng, J.K. Jansen (USA) and M. Naganobu (Japan)
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Major fishery events in Kerguelen Islands: Notothenia rossii, Champsocephalus gunnari, Dissostichus eleginoides – current distribution and status of stocks
Abstract: The large-scale trawl exploitation targeting virgin stocks of marbled notothenia ... (Notothenia rossii) off the Kerguelen Islands occurred after the discovery by the Soviet Union scouting ... fishing fleet of the fishing grounds in the early 1970’s. The fishery shifted to icefish (Champsocephalus ... gunnari) and grey notothen (Lepidonotothen squamifrons) when overexploitation on the shelf and surrounding ...
Meeting Document : WS-MPA-11/P04 : Autor(es): G. Duhamel, P, Pruvost, M. Bertignac, N. Gasco and M. Hautecoeur
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e-sc-xxvi-a5.pdf
... km from the slope fisheries in SSRUs 881H, 881I and 881K to grounds off Terra Nova Bay and Ross ... from excellent, where the tag number could easily be identified, to poor where no details could be ... tagged toothfish at the specified rate’. Biological parameters 3.61 No new biological parameter ... provided in WG-FSA-07/12. The Working Group noted that no variance estimates were provided in association
application/pdf attached to:WG-FSA-07Meeting Report : WG-FSA-07