Search results
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Adélie penguins as indicators of the state of the sea-ice in Adélie Land
Abstract: In the 2013-14 reproductive season, the 26,000 pairs of Adélie penguins from Pétrel ... the population there, a second complete breeding failure took place in the season 2016-17, leading to ... the deaths of all the chicks of the 28,000 Adélie pairs that bred in this season. Once more sea-ice ... extent was the major cause of failure. Sea-ice conditions in 2016-17 were even more drastic than in 2013 ...
Meeting Document : WG-EMM-17/01 Rev. 1 : Author(s): Y. Ropert-Coudert, A. Kato and C. Barbraud
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Review of CCAMLR activities on monitoring marine debris in the Convention Area
impact on marine mammals and seabirds in the Convention Area has been reviewed. The CCAMLR Marine Debris ... items reached a peak in the period 1994-1996 at Bird Island and Signy Island, but declined after that ... . The number of debris items has increased at Bird Island in 2006 and Signy Island in 2007, but ... decreased at King George Island in 2007. The majority of items reported were packaging materials, fishing ...
Meeting Document : SC-CAMLR-XXVI/BG/10 : Author(s): Secretariat
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DEVELOPMENT OF SPATIALLY EXPLICIT AGE-STRUCTURED POPULATION DYNAMICS OPERATING MODELS FOR ANTARCTIC TOOTHFISH IN THE ROSS SEA
operating models for Antarctic toothfish in the Ross Sea. The operating models consider both a coarse-scale ... spatial distribution parameters as an aid in evaluating the operating models. The models are implemented ... in the generalised Bayesian population dynamics model, the Spatial Population Model (SPM). The SPM ... discrete time-step state-space model that represents a cohort-based population age structure in a spatially ...
Meeting Document : WG-SAM-09/18 : Author(s): A. Dunn, S. Rasmussen and S. Hanchet (New Zealand)
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Further development of coarse- and medium-scale spatially explicit population dynamics operating models for Antarctic toothfish in the Ross Sea region
operating models for Antarctic toothfish in the Ross Sea. The operating models consider both a coarse-scale ... in the generalised Bayesian population dynamics model, the Spatial Population Model (SPM). The SPM ... discrete time-step state-space model that represents a cohort-based population age structure in a spatially ... , suggesting that younger fish were found predominantly in the southern shelf areas, mature fish on the slope ...
Meeting Document : WG-FSA-12/44 : Author(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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SO-AntEco: Contributing information and scientific advice on benthic biodiversity in the South Orkney Islands (Domain 1) region
Abstract: SO-AntEco was a British Antarctic Survey (BAS) led expedition undertaken in conjunction ... . The expedition took place on board the BAS research ship RRS James Clark Ross in early 2016. The focus ... the South Orkney Islands, and the biodiversity within those habitats, in relation to the geomorphic ... deposit feeders. Substantial differences in the abundance of VME taxa were found between two sampling ...
Meeting Document : WG-EMM-17/37 : Author(s): M.J. Brasier, S.M. Grant, P.N. Trathan, L. Allcock, O.S. Ashford, H. Blagbrough, A. Brandt, B. Danis, R. Downey, M. Eléaume, P. Enderlein, C. Ghiglione, O. Hogg, K. Linse, M. Mackenzie, C. Moreau, L. Robinson, E. Rodríguez, V. Spiridonov, A. Tate, M. Taylor, C. Waller, H. Wiklund and H.J. Griffiths
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Integrating Climate and Ecosystem Dynamics in the Southern Ocean (ICED) programme: Preliminary report of the ICED–CCAMLR Projections Workshop, 5 to 7 April 2018
of conservation and management strategies that anticipate and adapt to potential changes in krill ... in the Southern Ocean (ICED) programme and CCAMLR brought together a range of ecologists, physical ... impacts of climate change upon krill in Area 48. Here we present the preliminary findings of this workshop ... associated with climate variability and change in CCAMLR’s decision making ’ held at CCAMLR Headquarters, 5-7 ...
Meeting Document : WG-EMM-18/09 : Author(s): E.J. Murphy, N.M. Johnston, S.P. Corney and K. Reid
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Notothenia (p.) gibberifrons Stock Status and TAC Estimation in the Area of Shag Rocks (Subarea 48.3)
the fact that in the 1986/1987 season the recruitment in the first age group was not less than long ... -term mean (5947 million specimens), the abundance of N. guntheri in 1987/77 was 152 thousand tons. Then ... the following TAC values were obtained: a) Fishing intensity (F) in the predicted period is equal to ... ) Fishing intensity in the predicted period is at the level of 1987/88; c) Fishing intensity in the ...
Meeting Document : WG-FSA-88/33 : Author(s): R. Borodin and K. Shust (USSR)
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Workshop Report – The Ross Sea: Science, Policy and the Public in a Pristine Marine Ecosystemt
% of the Southern Ocean, which is inconsequential, yet its attributes, as identified in this workshop ... par with those recognized in World Heritage Sites designated elsewhere (e.g., Galàpagos, African Rift ... Lakes, Lake Baikal); on the basis of projections made from current models in the IPCC array, it likely ... cryopelagic community of organisms; and it is the best studied stretch of high latitude ocean in the Southern ...
Meeting Document : WG-EMM-09/14 : Author(s): J. Weller and D.G. Ainley (USA)
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Draft proposal for multi-Member research on the Dissostichus mawsoni exploratory fishery in East Antarctica (Divisions 58.4.1 and 58.4.2) from 2018/19 to 2021/22
Abstract: Exploratory fishing for toothfish (Dissostichus spp.) in East Antarctica (Divisions ... 58.4.1 and 58.4.2) began in 2003. Robust stock assessments and catch limits according to CCAMLR decision ... succeeding research proposal for 2018/19 to 2021/22, in accordance with ANNEX 24-01/A, Format 2. This ... allow more time for review by Working Groups of major reporting and review years in non-stock-assessment ...
Meeting Document : WG-SAM-18/17 : Author(s): Delegations of Australia, France, Japan, Republic of Korea and Spain
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A preliminary model-based approach for estimating natural mortality of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea Region
Abstract: Natural mortality (M) is a key parameter in fisheries stock assessments, relating ... directly to the productivity of a stock, stock status, and estimated precautionary yields. In the Ross Sea ... constant across age and sex. In 2018, the independent review of the Ross Sea region D. mawsoni stock ... assessment recommended that CCAMLR consider the robustness and reliability of estimating natural mortality in ...
Meeting Document : WG-SAM-2019/04 : Author(s): B. Moore, S. Mormede, S. Parker and A. Dunn