Search results
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CEMP cameras data validation experiment at the Galindez Island gentoo penguin (Pygoscelis papua) colonies
Abstract: The two seasons of the data validation experiment provided for pictures from time-lapse ... cameras of the CEMP camera monitoring project of CCAMLR at Galindez Island gentoo (Pygoscelis Papua ... station (Galindez Island), GAI CEMP site, provided daily observations of 15 gentoo nests chosen in the ... . The results of visual observations have been compared with data from camera pictures, which registered ...
Meeting Document : WG-EMM-2019/59 : Author(s): P. Khoetsky, A. Dzhulai, V. Smagol, G. Milinevsky, I. Dykyy, A. Simon, M. Telipska, E. Dykyi, I. Parnikoza and L.Pshenichnov
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The CCAMLR Decision Rule, strengths and weaknesses
ecosystem-based fisheries management, the implications of climate change should be considered by its working ... groups. The robustness of CCAMLR’s tothfish management protocol, based on the Decision Rule, is evaluated ... by considering hypothetical, future changes in the fishery- stock interactions and the stock ... productivity which could result from climate change. The Decision Rule is demonstrated to be highly ...
Meeting Document : SC-CAMLR-38/15 : Author(s): Delegation of the United Kingdom
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Preliminary assessment of the South Georgia toothfish stock, 2007
Abstract: 1. The catch-at-length based CASAL model for toothfish at South Georgia is updated with ... data from the 2007 fishing season. The predicted spawning stock biomass and the yield is slightly ... higher than was estimated last year. 2. Improvements are made to the fit of tag data through (a ... estimates of catches at age from 1998 to 2006 (based on random sampling of the catch for age determination ...
Meeting Document : WG-FSA-07/29 : Author(s): D.J. Agnew, R. Hillary and J. Pearce (United Kingdom)
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Developing a carbon-budget trophic model of the Ross Sea, Antarctica: work in progress
Abstract: We report on the development of a carbon-budget trophic-model of the Ross Sea. We ... provisionally defined the food web of the Ross Sea as having the following functional compartments: birds, seals ... column, ice, and benthic). The simple trophic model requires well over a hundred parameters, each of ... organisms in the Ross Sea was used whenever available. Where no information in the literature was available ...
Meeting Document : WG-EMM-05/18 : Author(s): M. Pinkerton, S. Hanchet, J. Bradford-Grieve and P. Wilson (New Zealand)
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Review of CCAMLR activities on monitoring marine debris in the Convention Area
Abstract: The current status of national surveys on monitoring of marine debris and their impact ... on marine mammals and seabirds in the Convention Area has been reviewed. The CCAMLR Marine Debris ... at King George Island for the fourth consecutive year. There are now 4 sites that have data for more ... Islands). Marine debris, principally packaging items, fishing gear, and wood items, reached a peak in the ...
Meeting Document : SC-CAMLR-XXIII/BG/11 : Author(s): Secretariat
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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 : Author(s): N. Brothers, R. Gales and T. Reid (Australia)
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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 : Author(s): ASOC Observer
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Trophic interactions and population trends of killer whales (Orcinus orca) in the southern Ross Sea
orca) are reported for the vicinity of Ross Island, Ross Sea, Antarctica, between 2002 and 2010 ... . Updating an earlier report, the frequency of sightings and the number of individuals per sighting of Ross ... coincident with a decrease in the number and size of an important prey: Antarctic toothfish (Dissostichus ... important to the whales, a relationship with potential parallels to that known between well-studied fish ...
Meeting Document : WG-FSA-12/P03 : Author(s): D.G. Ainley and G. Ballard
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Further development of a spatially explicit population dynamics operating model for Antarctic toothfish in the Ross Sea region
model for Antarctic toothfish over the entire Ross Sea region, for a medium scale spatial resolution ... (189 spatial cells) covering the Ross Sea region. The model was developed as a generalised Bayesian ... population dynamics model implemented using the Spatial Population Model software (SPM), and a single sex age ... appeared to broadly reflect the hypothesised spatial distribution of Antarctic toothfish, suggesting that ...
Meeting Document : WG-SAM-13/35 : Author(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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Revised assessment models for Patagonian toothfish in research block C of Division 58.4.4, Ob & Lena Banks for the years 1989/1990 to 2012/13
eleginoides in research block C in Division 58.4.4 b on the assumption of constant year class strength and no ... IUU fishing occurrence in the block. The five models are as follows: 1) catch at length model as ... parameters were not estimated in these models according to the recommendations in the last WG-FSA meeting. In ... addition, proportion mature for ages was calculated on the assumption of logistic curve fitting for the ...
Meeting Document : WG-SAM-14/15 : Author(s): K. Taki (Japan)