Resultados de la búsqueda
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Update to recruitment series for Patagonian toothfish in the Heard Island region
Abstract: The recent fish survey at in the vicinity of Heard Island in 2000 has provided ... estimates of recruitment for at least one new cohort (1996) and another estimate of the 1995 cohort. The ... older cohorts are likely to be distributed more widely than the shallow part of the Heard Plateau ... , consistent with the observations from 1999. A reanalysis of all survey data from the region has shown that ...
Meeting Document : WG-FSA-00/42 : Autor(es): A. Constable, R. Williams, T. Lamb and E. van Wijk (Australia)
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Seabird mortality in the Japanese tuna longline fishery around Australia, 1988–1995
Abstract: Large numbers of seabirds are killed each year within the Australian Fishing Zone (AFZ ... ) by Japanese longline vessels targeting tuna. In recent years the estimated rate of seabird bycatch in ... the AFZ has been in the order of 0.15 birds 1000 hooks, translating to mortalities of 1000-3500 birds ... observed hauled aboard the vessels. The observed seabird catch rate varies annually, seasonally and ...
Meeting Document : WG-FSA-98/31 : Autor(es): N. Brothers, R. Gales and T. Reid (Australia)
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An acoustic survey of Antarctic krill on the South Georgia shelf, CCAMLR Subarea 48.3, in January 1992
the opportunity was taken in 1992 to produce a krill biomass estimate as a by-product of a fish stock ... operating at 38 kHz and 120 kHz. The results have been analysed for all straight sections of track when the ... ship's speed exceeded 7 knots and when the ship was over the shelf around the main island of South ... Georgia. The appearances of echoes on echo charts were used to decide which echoes to include in krill ...
Meeting Document : WG-EMM-96/42 : Autor(es): Everson, I., Goss, C.
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CONTINUING CCAMLR’S FIGHT AGAINST IUU FISHING FOR TOOTHFISH EXECUTIVE SUMMARY OF THE REPORT BY TRAFFIC INTERNATIONAL AND WWF AUSTRALIA
Abstract: Despite the continuous efforts of CCAMLR to fight Illegal, Unregulated and Unreported ... (IUU) fishing, there remains evidence of IUU activities in the Convention area. This paper is the ... with WWF Australia that presents a trade-based assessment of toothfish catch for the period of 2003 ... -2007 with a view to provide an indication of the extent of the IUU catch. The report highlights that in ...
Meeting Document : CCAMLR-XXVII/BG/38 : Autor(es): Submitted by IUCN
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ANTARCTIC FUR SEAL PUP PRODUCTION AND POPULATION TRENDS IN THE SOUTH SHETLAND ISLANDS WITH SPECIAL REFERENCE TO SOURCES OF ERROR IN PUP PRODUCTION ESTIMATES
Abstract: This paper reports the results of a ground survey of fur seal colonies from in the ... confidence limits on pup production. Total pup production was 7,602 (±103) pups down 24.4% from the last ... census in 2001/02 (10,057 ±142 pups born). Dead pups accounted for 1.64% of the total. A comparison with ... previous censuses over a 20yr period (1987, 1992, 1994, and 1996) indicates the rate of increase in fur ...
Meeting Document : WG-EMM-PSW-08/14 : Autor(es): M.E. Goebel (USA), D.E. Torres C. (Chile), A. Miller, J. Santora, D. Costa (USA) and P. Diaz (Chile)
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Pursuit of polynyas in the Antarctic peninsula area
influence biological activity. We pursued daily transition of coastal polynyas in the Antarctic Peninsula ... area from 1978 through 1995 using images of sea ice concentrations by the satellite microwave ... observations. A typical polynya existed off the tip of the Peninsula in 1987 and 1991. In the such years, sea ... ice cover developed extensively. Inversely, the years of the narrow sea ice cover were 1988, 1989,1990 ...
Meeting Document : WG-EMM-97/69 : Autor(es): Kimura, N., Shibazaki, K., Matsumura, S., Naganobu, M., Okada, Y.
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Some considerations for the further development of statistical summaries of CEMP indices
Abstract: A potential method is presented for combining data collected as part of the CCAMLR ... ecosystem monitoring programme (CEMP) into a single index for each of the predator, prey and environment ... parameters. The proposed method is based on the usual theory of multivariate statistics and takes into ... account the covariance between parameters. The power of the statistical procedure recently adopted by WG ...
Meeting Document : WG-EMM-Stats-97/07 : Autor(es): de la Mare, W.K.
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The biology and ecology of mackerel icefish, Champsocephalus gunnari – an Antarctic fish species that lack haemoglobin
Abstract: The mackerel icefish (Champsocephalus gunnari) is a prominent member of the coastal ... fish fauna of the Seasonal Pack-ice Zone and the islands north of it. Separated into a number of stocks ... , its distribution ranges from the Scotia Arc region, namely South Georgia, in the Atlantic Ocean sector ... to the Kerguelen-Heard Plateau in the Indian Ocean sector. Mackerel icefish have been heavily ...
Meeting Document : WG-FSA-96/24 : Autor(es): Everson, I., Kock, K.-H.
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Shifts in the demersal fish community of South Georgia
Abstract: The heavily exploited fish stocks of South Georgia have been declining since the early ... 1970's. Use of a non-parametric method revealed a significant change in this community from the ... 1986/87 survey to the 1987/88 survey. This change was the result of reductions in the abundance of ... Champsocephalus gunnari and Notothenia squamifrons, and the increased presence of Pseudochaenichthys georgianus ...
Meeting Document : SC-CAMLR-VII/BG/24 : Autor(es): United States of America
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Ocean acidification and the Southern Ocean
, including the Southern Ocean. The relative undersaturation of CaCO3 in the Southern Ocean suggests that ... organisms such as the pteropods that form the base of much of the Southern Ocean food chain. Orr et al (2005 ... ) predicted that under the Intergovernmental Panel on Climate Change (IPCC) IS92a warming scenario, which ... assumes “business as usual”- emissions leading to 778 ppm of CO2 in the atmosphere by 2100- aragonite will ...
Meeting Document : CCAMLR-XXIX/BG/24 : Autor(es): ASOC Observer