Resultados de la búsqueda
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A descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in the Ross Sea up to 2005/06
Abstract: A descriptive analysis of the toothfish tagging programme carried out in Subareas 88.1 ... for non- New Zealand vessels for the first time. However, tag data were only available for all of ... these vessels for 2005 and for about half of these vessels for 2004. A reported total of 8888 Antarctic ... 20% of the recaptures could not be matched to a release observation, mainly because of missing ...
Meeting Document : WG-FSA-SAM-06/09 : Autor(es): A. Dunn and S.M. Hanchet (New Zealand)
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Foraging movements of the shy albatross Diomedea cauta breeding in Australia; implications for interactions with longline fisheries
Abstract: Satellite telemetry was used to identify the foraging zones of Shy Albatrosses Diomedea ... cauta breeding at two sites off Tasmania, Australia (Albatross Island in western Bass Strait and Pedra ... Branca to the south) to assess their level of interaction with longline fisheries. Adult birds from both ... Branca foraged between the colony and the southeastern edge of the continental shelf. The distances ...
Meeting Document : WG-FSA-98/33 : Autor(es): N. Brothers, R. Gales, A. Hedd and G. Robertson (Australia)
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Using outputs from spatial population models of Antarctic toothfish in the Ross Sea region to investigate potential biases in the single population model
assessment in the CCAMLR region. We recommend the further development of this method at future meetings ... assumptions of the stock assessment for Antarctic toothfish in the Ross Sea region using spatially explicit ... operating models. The method allows investigation of potential biases and uncertainty in the assumptions of ... Population Model (SPM), to develop spatially explicit movement models of the Antarctic toothfish in the Ross ...
Meeting Document : WG-FSA-12/45 : Autor(es): S. Mormede and A. Dunn (New Zealand)
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Winter distribution and condition of Antarctic krill in relation to sea-ice and water column production in the South Shetland Islands during Austral Winter 2013
Abstract: Acoustic and net sampling of Antarctic Krill and other euphausiids was conducted at 88 ... was expansive (north of 60 S around Elephant Island) and the sea ice concentration was mostly more ... than 50%. Observations of birds and mammals showed that many species were found in southwestern ... Bransfield Strait, associated with the high concentrations of krill, an area targeted by the krill fishery in ...
Meeting Document : WG-EMM-14/13 : Autor(es): C.S. Reiss, J. Walsh, K. Dietrich and J.A. Santora (USA)
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A single-area stock assessment model of Antarctic toothfish (Dissostichus mawsoni) in SSRU 88.2E for the 2004/05 season
-release and recapture data providing the most information on stock size, but with the catch-at-age data ... excluding preventing very low estimates of stock size. Monte-Carlo Markov Chain (MCMC) diagnostics suggested ... some evidence of non-convergence, particular in the declining right-hand limb of the fishing ... selectivity parameters. MCMC estimates of initial (equilibrium) spawning stock abundance (B0) were very ...
Meeting Document : WG-FSA-05/31 : Autor(es): A. Dunn, D.J. Gilbert and S.M. Hanchet (New Zealand)
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Acoustic monitoring and evaluation of krill in the Antarctic ecosystem Bransfield Strait and around Elephant Island during ANTAR XXI and XXII, aboard RV Humboldt, Peru
Abstract: Monitoring and hydroacoustic assessment of the distribution and biomass of krill ... multifrequency 120 and 38 kHz, respectively. This system is calibrated according to the procedure of ICES. For ... ; ANTAR XXII: 16 stations). Results indicated that krill swarms during the day swarms were recorded at ... from the surface to 20 m deep. A wide distribution of krill in the study area, the highest densities ...
Meeting Document : WG-EMM-16/76 : Autor(es): R. Cornejo, M. Flores and J. Zuzunaga
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Preliminary investigations of an assessment model for skates and rays in the Ross Sea
, steepness, and size and age at maturity. The applicability of a general model, such as presented here, to a ... Antarctic skates in SSRUs 88.1H, 88.1I, 88.1J, & 88.1K of the Ross Sea. The developmental model ... attempted to create a catch history of all skates and rays in the Ross Sea, and integrate these data with ... assessment model. We conclude that aspects of the catch history were very uncertain, including the species ...
Meeting Document : WG-SAM-07/4 : Autor(es): A. Dunn, S.M. Hanchet, S.L. Ballara and M.P. Francis (New Zealand)
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Report on fishery and scientific activity of Ukraine in the Antarctic in 1993/94
krill in March-June 1994 was 8.708 t. Three longliners of SRTM type worked at the specialized fishery of ... Abstract: In the season of 1993-1994 Ukrainian fishing fleet conducted fisheries in two areas of ... Antarctic waters of the World Ocean: in the Atlantic (subareas 48.2 and 48.3) and the Indian (zone of the ... in subarea 48.2 from 01.03.1994 to 10.04.1994 and from the middle of the second ten-day period of May ...
Meeting Document : SC-CAMLR-XIII/BG/12 : Autor(es): Observer (Ukraine)
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A drone-based Antarctic fur seal (Arctocephalus gazella) census of the St. Telmo Islands, South Shetland Archipelago
Shirreff and the Saint Telmo Islands. Although annual counts have been undertaken at Cape Shirreff since ... the 1990’s, logistical challenges have prevented surveys of the St Telmo Islands since 2008. Over the ... the peak of recent production in 1997. Given the historical importance of Cape Shirreff and St Telmo ... seal (Arctocephalus gazella) census of the St. Telmo Islands, South Shetland Archipelago Approval ...
Meeting Document : WG-EMM-2019/65 : Autor(es): D.J. Krause and M.E. Goebel
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FURTHER DEVELOPMENTS OF A SIMULATION MODEL, ‘PATCH’, FOR EVALUATING MANAGEMENT STRATEGIES TO CONSERVE BENTHIC HABITATS (VULNERABLE MARINE ECOSYSTEMS) WHICH ARE POTENTIALLY VULNERABLE TO IMPACTS FROM BOTTOM FISHERIES
ecosystems’ in order to maintain the ecological structure and function of, particularly, deep sea benthic ... habitats. Noting the paucity of data on the ecology of these habitats, this paper further develops a ... practical approach to develop and evaluate fishing strategies aimed at achieving this objective i.e. what is ... requirement can be translated into a simple operational objective: Maintain the quality of habitats above the ...
Meeting Document : WG-FSA-09/42 : Autor(es): A.J. Constable (Australia)