Resultados de la búsqueda
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Reconciling fisheries with conservation: three examples from the Southern Ocean
employed by CCAMLR is the application of a precautionary approach, which explicitly incorporates ... a unique set of circumstances and unresolved concerns. While the current fishery for krill is small ... land-breeding krill predators may pose a threat as well as those posed by the broader-scale influence ...
Meeting Document : WG-EMM-04/48 : Autor(es): R.P. Hewitt (USA), I. Everson (United Kingdom) and C.D. Jones (USA)
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Report on the effectiveness of integrated weight (fast sinking) longlines in reducing the mortality of white-chinned petrels and sooty shearwaters in autoline longline fisheries
applies, and are considered a worse-case scenario from a risk assessment perspective. In the experiments ... -chinned petrels and up to 400 sooty shearwaters. Lines were set in day-light and at night, and a single ...
Meeting Document : WG-FSA-04/72 : Autor(es): G. Robertson (Australia), N. Smith (New Zealand), B. Wienecke and S. Candy (Australia)
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Population structure of icefish (Champsocephalus gunnari) in the South Georgia area (Antarctic)
large fish above 40 cm in length in catches. These distinctions are the result of a certain geographic ... with a high probability that C.gunnari population in the South Georgia area is the major reproductive ... unit of the area distributing currently near the Island, while the shallow Shag Rocks area is a zone of ...
Meeting Document : WG-FSA-04/40 : Autor(es): Zh.A. Frolkina and I.A. Trunov (Russia)
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An 8-year cycle in krill biomass density inferred from acoustic surveys conducted in the vicinity of the South Shetland Islands during the austral summers of 1991/1992 through 2001/2002
from 1 to 60 g m–2, decreasing from mid-range levels in 1991/1992 to a minimum in 1992/1993–1993/1994 ... , increasing to a peak in 1996/1997–1997/1998, and decreasing again through 2000/2001–2001/2002. Although this ... biomass density are consistent with apparent changes in reproductive success. A truncated Fourier series ...
Meeting Document : WG-EMM-03/6 : Autor(es): R.P. Hewitt, D.A. Demer and J.H. Emery (USA)
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Foraging strategies of chinstrap penguins at Signy Island, Antarctica: importance of benthic feeding on Antarctic krill
both types of trip fed almost exclusively on Antarctic krill. There was a positive relationship between ... strategy by one of the major avian consumers of Antarctic krill provides a new insight into the predator ... -prey interactions of the Antarctic coastal marine ecosystem. Author(s): A. Takahashi (Japan), M.J ...
Meeting Document : WG-EMM-03/37 : Autor(es): A. Takahashi (Japan), M.J. Dunn, P.N. Trathan (United Kingdom), K. Sato, Y. Naito (Japan), J.P. Croxall (United Kingdom)
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Sources of variability associated with Adélie penguin CEMP parameters measured at Béchervaise Island, East Antarctica
Abstract: We examine the magnitude of a variety of sources of variability associated with CEMP ... maintaining a sufficient sample size or by standardising summary statistics against some chronologically ... would only affect the ability to detect long term changes in a parameter if sampling variance can also ...
Meeting Document : WG-EMM-03/48 : Autor(es): L.M. Emmerson, C. Southwell, J. Clarke and K. Kerry (Australia)
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Otolith microstructure of juvenile fish, the first annulus radius and pelagic stage duration of icefish Champsocephalus gunnari (Channichthyidae) in the South Georgia area
represent a mixture of two year-classes of 1999-2000 and 2000-2001. The mean width of the daily growth zone ... . The length of the young-of- the-year varies within a broad range as a result of prolonged spawning ...
Meeting Document : WG-FSA-03/75 Rev. 1 : Autor(es): L.V. Shcherbich (Russia)
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Antarctic fur seals in the South Shetland Islands: pup production and population trends
reports the results of a ground survey of all known fur seal colonies from Smith to Elephant Islands from ... %) and San Telmo Islands (21%). Dead pups accounted for 1.37% of the total. A comparison with previous ... censuses over a 15yr period (1987, 1992, 1994, and 1996) indicates the rate of increase in fur seal ...
Meeting Document : WG-EMM-02/51 : Autor(es): M.E. Goebel (USA), V.I. Vallejos (Chile), W.Z. Trivelpiece, R.S. Holt (USA) and J. Acevedo (Chile)
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Report of the Workshop for the International Coordinated Survey in conjunction with CCAMLR-2000 Survey
%), 39.5 g m-2 (CV 15.2 %) and 43.0 g m-2 (CV 14.1 %) over a nine-week period. Maps of biomass density for ... a change in the demographic structure of the population. The smaller size modes disappear and krill ... include analyses of patch sizes and densities along transects as a means of investigating variations in ...
Meeting Document : WG-EMM-01/68 : Autor(es): Delegations of Japan, Rep. of Korea, USA and Peru
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Distribution, demography and discard mortality of crabs caught as by-catch in an experimental pot fishery for toothfish in the South Atlantic
South Georgia of a method of fishing for toothfish (Dissostichus eleginoides) using pots. A significant ... belt 85% – 90% of crabs would survive discarding, whereas on the vessel where crabs were emptied down a ...
Meeting Document : WG-FSA-01/32 : Autor(es): M.G. Purves (South Africa), D.J. Agnew, G. Moreno, C. Yau and G. Pilling (United Kingdom)