Search results
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Impact of predation by Cape fur seals Arctocephalus pusillus on Cape gannets Morus capensis at Malgas Island, Western Cape, South Africa
(Morus capensis) fledglings around Malgas Island in the 2000/01 breeding season, 11 000 in 2003/04 and 10 ... 000 in 2005/06. This amounted to about 29%, 83% and 57% of the overall production of fledglings at the ... island in these breeding seasons, respectively. Preliminary modelling suggests this predation is not ... sustainable. There was a 25% reduction in the size of the colony, the second largest of only six extant Cape ...
Meeting Document : WG-EMM-06/9 : Author(s): A.B. Makhado, R.J.M. Crawford and L.G. Underhill (South Africa)
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Estimation of the green weight of krill caught
Abstract: Vessels operating in the krill fishery in CCAMLR’s Convention Area have been required ... revised at WG-EMM-13 and published in Conservation Measure 21-03 Annex B. Estimates of green weight and ... parameter values are reported in each vessel’s haul-by-haul catch and effort data. This paper reviews the ... data reported in 2013/14 (to May 2014). Vessels fishing in 2013/14 used six methods for the direct ...
Meeting Document : WG-EMM-14/29 : Author(s): Secretariat
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Larval fish distribution and abundance of the western Ross Sea
carried out in the western Ross Sea in November-December 1994. The present study focused on improvement of ... the knowledge of the larval fish community in relation to its distribution and relative abundance. A ... abundance of larval fish in the whole area was about 2.7 specimens / 1000 m3 of sea water filtered. The ... Chionodraco sp. It was noteworthy the high number of Trematomus lepidorhinus (570 larvae) found in a single ...
Meeting Document : WG-FSA-95/11 : Author(s): Greco, S., la Mesa, M., Vacchi, M.
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Incorporating information on the distribution of the krill fishery into Domain 1 MPA planning – report of the CCAMLR scholarship recipient
Abstract: This study aims to improve understanding of spatial and temporal variability in krill ... fishing activity in MPA Planning Domain 1, towards the development of a ‘cost layer’ and additional ... information for use in Marxan analyses and subsequent MPA planning activities. We provide further detail on ... the location of areas of high concentration of krill catches or ‘hotspots’ in current fishing ...
Meeting Document : WG-EMM-17/22 : Author(s): A. Capurro, M. Santos and S. Grant
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Integrating CPUE with the GY model: examination of the effects of shortening the CPUE series and incorporating elements of uncertainty into the D. eleginoides assessment of Subarea 48.3
whether a shorter CPUE time-series would be preferable for use in its annual assessments. (WG-FSA-03/40 ... 2003, paragraph 2.27). This paper explores some of the consequences of shortening the dataset in the ... application of the usual assessment method. In addition we investigate the incorporation of uncertainty in the ... CPUE series. Truncation of the standardised series from WG-FSA 2002 results in only slight modification ...
Meeting Document : WG-FSA-03/96 : Author(s): I.R. Ball, S. Candy and A.J. Constable (Australia)
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Report on the CCAMLR marine debris monitoring program
items found in beach surveys. The fishing items found were mostly from longline and trawl origins ... . Plastic packaging bands continue to be found in beach surveys, with an unfortunate increase in closed ... bands found at King George Island. Overall, the amount of debris in colonies of grey-headed albatrosses ... in wandering albatross colonies remains the most frequent debris item found in each season. The ...
Meeting Document : WG-FSA-14/68 : Author(s): Secretariat
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Linking population trends of Antarctic shag (Phalacrocorax bransfieldensis) and fish at Nelson Island, South Shetland Islands (Antarctica)
in the number of breeding pairs of Antarctic shag Phalacrocorax bransfieldensis in two colonies on ... finfish fishery has ever existed. Integral study of these parameters there showed that, in Antarctic shags ... , respectively, with both factors adversely affecting the population trends of this bird. In line with these ... premises, the declining trend observed in shag colonies on the South Shetland Islands appears to have been ...
Meeting Document : WG-EMM-16/P09 : Author(s): R. Casaux and E. Barrera-Oro
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Reassessment of important population parameters for Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on time series of surveys and fishery data
parameters and recruitment of Patagonian toothfish, Dissostichus eleginoides, in the Heard Island region. A ... new survey of the Heard Island Plateau was undertaken in May- June 2001, providing the sixth survey ... -estimated in the past. An estimate of natural mortality indicates that mortality of young fish, ages 3-8 ... , may be much greater than older fish. This may need to be taken account of in the assessment process ...
Meeting Document : WG-FSA-01/73 : Author(s): A.J. Constable, R. Williams, T. Lamb, I.R. Ball and E. van Wijk (Australia)
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Conveners’ Report of the Joint CEP/SC-CAMLR Workshop on Climate Change and Monitoring
Abstract: The Joint CEP/SC-CAMLR Workshop on Climate Change and Monitoring was held in Punta ... Polly Penhale), and is provided in full below. The report was discussed at the Committee for ... Environmental Protection (CEP XIX) in Santiago, Chile (23-27 May 2016) (CEP XIX Report, paragraphs 43 to 56 ... ), and at WG-EMM-16 in Bologna, Italy (WG-EMM-16 Report, paragraphs 6.8 to 6.28). The CEP agreed that the ...
Meeting Document : SC-CAMLR-XXXV/07 : Author(s): Delegations of the United Kingdom and the USA
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Calculating effective releases and recaptures for stock assessments based on tag detection and tagging mortality indices
occurred in the same time and place (i.e. within a specific distance and in the same fishing season). The ... in the Ross Sea region. This index was subsequently used in 2013 to select the tagging data to be ... included in the stock assessment for the Ross Sea region and Amundsen Sea region, with the understanding ... to include in the stock assessment, with respect to both tag release and tag recapture data. Here we ...
Meeting Document : WG-SAM-14/30 : Author(s): S. Mormede (New Zealand)