Search results
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Results from the reduced groundfish survey conducted in CCAMLR Subarea 48.3 in January 2012
between the 26-28th January 2012. This survey was not intended to be a full biomass survey so only 20 ... random hauls were completed around Shag Rocks with 3 additional opportunistic sites at South Georgia ... . Reasonable catches of Patagonian toothfish were found around Shag Rocks (greater than in 2009 and 2010), with ... -weighted length frequencies of mackerel icefish indicated that 2+ and 3+ sized fish dominated at Shag Rocks ...
Meeting Document : WG-FSA-12/37 : Author(s): J. Brown, S. Gregory, A. Stanworth, V. Carretero, G. Baker and M. Belchier (United Kingdom)
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Variation in the distribution of Antarctic krill Euphausia superba around South Georgia
island. Cluster analysis revealed that the length-frequency distributions could be grouped into 5 main ... types with relatively simple biological characteristics: cluster 1 were medium-sized year 2+ krill (mean ... probably 3+ and older (mean size 49.5 mm); cluster 4 and 5 were small krill, mostly year 1 + either with or ... ). The PCA for all cruises combined showed that there were no obvious differences in the type of krill ...
Meeting Document : WG-EMM-97/47 : Author(s): Daly, H.I., Murray, A.W.A., Watkins, J.L.
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Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Division 58.4.3a
this reason, we propose the mitigation rule so that 50% of lines are required to be separated by not ... block in such a way that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of ... coefficient variance of biomass estimate from the bootstrapped procedure, under the condition that the ... sizes turned out to be larger in many blocks and smaller in a few blocks over the data poor-fisheries ...
Meeting Document : WG-FSA-13/40 : Author(s): Delegation of Japan
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Trends in entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at South Georgia
Abstract: A study conducted at South Georgia in 1988/1989 indicated that several thousand ... campaigned for compliance with the MARPOL provisions relating to waste disposal at sea, and for cutting of ... of recording entangled fur seals confirms that entanglement is a persistent problem, although its ... doubled in the same period, so that the overall total of animals entangled may even have increased ...
Meeting Document : SC-CAMLR-XV/BG/03 : Author(s): Delegation of the United Kingdom
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Best practice seabird by-catch mitigation for Spanish-rig longline vessels with emphasis on line weighting regimes
interactions with seabirds. The benchmark sink rate was that of integrated weight (IW) longlines, as used by ... autoline vessels, that are effective in reducing the mortality of white-chinned petrels, one of the world’s ... with weights 30 m apart and either 6 kg or 8 kg traditional weighs, or 40 m and 8 kg weights, most ... rates and are considered to be interchangeable. Best practice seabird bycatch mitigation for line ...
Meeting Document : WG-FSA-06/22 : Author(s): G. Robertson (Australia), C.A. Moreno (Chile), B. Wienecke (Australia), P. Gandini (Argentina), G. McPherson (Australia) and J.-P. Seco Pon (Argentina)
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Feeding of nine Antarctic fish species and their daily ration evaluations
Chaenodraco wilsoni and Trematomus eulepidotus indicates that they are plankton-eaters as their diet comprised ... mainly of Euphausiids; T. centronotus is a benthophage feeding mainly on Gammarids and Polychaetas, T ...
Meeting Document : WG-FSA-91/08 : Author(s): Ye. A. Pakhomov and V. B. Tseitlin (USSR)
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Krill fishery report: 2005 update
preliminary estimate of the total catch of krill for the season is approx 142000 t. This compares with 118166 ... have taken 62049 t of krill to date. Two CCAMLR scientific observers have been deployed. The ... t of krill reported in 2003/04. One monthly catch and effort report is overdue for 2004/05, and some ...
Meeting Document : WG-EMM-05/5 : Author(s): Secretariat
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Beach debris survey Signy Island, South Orkney Islands 1999/2000
the lowest recorded (18%) and may indicate that the ban on their use aboard fishing vessels brought ... revealed that 60% had come from ships or fishing vessels and7% were from Signy Research Station. The rest ... comprised wood (11%) and items with noobvious source (22%). Of particular concern was the quantity of ... polystyrene foam whichaccounted for 31% of all items recovered and 46% of items small enough to be ingested ...
Meeting Document : SC-CAMLR-XIX/BG/06 : Author(s): Delegation of the United Kingdom
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PENGUIN RESPONSES TO CLIMATE CHANGE IN THE SOUTHERN OCEAN
tolerance; species with low adaptability, particularly the ice-obligates, may therefore be more affected by ... Abstract: Penguins are adapted to live in extreme environments, but they can be highly sensitive ... -Southern Oscillation and the Southern Annular Mode are the main modes of climate variability that drive ... complex and changes over time, so that penguin responses to climate change are expected to vary ...
Meeting Document : WG-EMM-09/P09 : Author(s): J. Forcada and P.N. Trathan
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Evaluating length-frequency data and length-based performance indicators in new and exploratory fisheries
been difficult. In this paper, we show that length-frequency data on their own have little inherent ... conclusive information about stock status. While length-frequency data can be useful in assessments when ... integrated with other more informative estimators for stock abundance and productivity, interpretation of ... trends in length-frequency data can be misleading and should be avoided. Author(s): P.E. Ziegler, D.C ...
Meeting Document : WG-FSA-10/43 : Author(s): P.E. Ziegler, D.C. Welsford and A.J. Constable (Australia)