Search results
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Climate change and zooplankton dominance in the Antarctic marine ecosystem: implications for the food web
function of the Antarctic marine ecosystem. In the Antarctic Peninsula region winter sea-ice coverage is a ... blooms, and decreased abundance of krill-dependent Adelie penguins (Pygoscelis adeliae) in the past 15 ... Abstract: There is a growing body of evidence that the climate of the Antarctic Peninsula region ... has been warming over the past 40 years with an associated decreased frequency of winters with ...
Meeting Document : WG-EMM-96/21 : Author(s): Siegel, V., Fraser, W., Trivelpiece, S., Holm-Hansen, O., Loeb, V., Hewitt, R., Trivelpiece, W.
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ASSESSMENT MODELS FOR ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA FOR THE YEARS 1997–98 TO 2008–09
-convergence in the key biomass parameters, although there was some evidence of non-convergence in the annual ... Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B ... , estimate of initial biomass to that from the 2007 base case. Two sensitivity models were run; one updated ...
Meeting Document : WG-FSA-09/40 Rev. 1 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)
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Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 1997–1998
is 13% more than the number of hooks reported set in 1996-97, but total effort probably declined ... during 1997-98 as a result of a decrease in the number of unsanctioned vessels operating in the area ... Abstract: Longline fishing for Patagonian toothfish Dissostichus eleginoides in the South African ... Exclusive Economic Zone around the Prince Edward Islands commenced in 1996. This paper summarises seabird ...
Meeting Document : WG-FSA-98/42 : Author(s): P.G. Ryan and M.G. Purves (South Africa)
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Report on seabird by-catch outside the CCAMLR Convention Area recorded in the South African fisheries
mortalities of seabirds. Independent research and measures imposed in the permit conditions for these sectors ... Abstract: Given Resolution 22/XXV, paragraph 3 concerning the mortality of Convention Area ... Seabirds to the north of the Convention Area and the request by IMAF, SC-CAMLR XXVII/15 (Para 4.3) to ... report these, this document provides an overview of the South African fishing sectors most likely to ...
Meeting Document : WG-IMAF-11/11 : Author(s): C. Heineken and P. Mullins (South Africa)
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Benthos by-catch study and benthic cameras deployment during the Poker 4 fish biomass survey for habitat characterisation in the Kerguelen Plateau
CCAMLR a new data acquisition protocol for benthos bycatch in the French fisheries of the Southern Ocean ... , benthic cameras permitted to observe the substrates in this northern part of the Kerguelen Plateau ... Abstract: The Muséum national d’Histoire naturelle presented at the 2017 EMM Working Group of the ... protocol is based on the sampling of specimens and the weighing and photographic sampling of the whole ...
Meeting Document : WG-EMM-18/20 : Author(s): A. Martin, J. Blettery, N. Améziane and M. Eléaume
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Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 2000–2001
Zone around the Prince Edward Islands. There was a slight increase in the number of fishing trips and ... hooks set in 1999/2000. The number of seabirds killed dropped dramatically from 268 in 1999/2000 to 76 ... in 2000/2001. White-chinned petrels Procellaria aequinoctialis accounted for 85.5% of the six species ... killed. Author(s): P.G. Ryan and B.P. Watkins (South Africa) Title: Seabird by-catch in the Patagonian ...
Meeting Document : WG-FSA-01/61 : Author(s): P.G. Ryan and B.P. Watkins (South Africa)
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Progress report on the Australian Fisheries Research and Development Corporation project to develop robust assessment methods and harvest strategies for spatially complex, multi-jurisdictional toothfish fisheries in the Southern Ocean
and sex ratio across the Kerguelen Plateau; 3) An analysis of the fishable area in the French and ... region will continue to be refined to account for the spatial structure of the stocks and fisheries in ... spatial characteristics of current and historical fishing by France and Australia, and the underlying ... distribution, abundance and movement of toothfish on the Kerguelen Plateau, to enable complementary harvest ...
Meeting Document : WG-SAM-15/37 : Author(s): P. Burch, C. Péron, D. Welsford, P. Ziegler, T. Lamb, T. Robertson (Australia), G. Duhamel, N. Gasco, P. Pruvost, C. Chazeau and R. Sinègre (France)
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A study on calibration for commercial echosounder using the bottom backscattering strength from a fishing vessel near the South Shetland Islands in Antarctic
fishing vessel to use it in estimating biomass of Antarctic krill (Euphausia superba). The method of ... calibration was to analyze the difference between the bottom backscattering strength of the commercial ... , was examined to verify the calibration result. The analysis result confirmed the possibility of ... calibration by bottom backscattering strength, since the proportion of krill swarm signals within 2 dB < S ...
Meeting Document : WG-EMM-16/61 : Author(s): Delegation of the Republic of Korea
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Marine ecosystem acoustics (MEA): quantifying processes in the sea at the spatio-temporal scales on which they occur
monitoring. Realistic understanding of what can and cannot be achieved with the available sampling techniques ... -space scales at which they occur, which is essential for some of the management challenges of CCAMLR ... , for example the FBM. Sustainable management of fisheries resources requires quantitative knowledge ... . Conventional sampling by physical capture is inconsistent with the spatial and temporal scales on which many of ...
Meeting Document : WG-EMM-15/P01 : Author(s): O.R. Godø, N.O. Handegard, H.I. Browman, G.J. Macaulay, S. Kaartvedt, J. Giske, E. Ona, G. Huse and E. Johnsen
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Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region for the years 1997–98 to 2014–15
-Carlo Markov Chain (MCMC) diagnostics suggested no evidence of non-convergence in the key biomass ... Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region (Subareas 88.1 and SSRUs 88.2A–B ... observations. Sensitivity runs showed that the results were relatively insensitive to the use of logistic ...
Meeting Document : WG-FSA-15/38 : Author(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)