Search results
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The Ross Sea, Antarctica, where all ecosystem processes still remain for study
scientific effort has been invested in studies of the geology, physics and biology of the Ross Sea over the ... past 45 years. In particular the activities of the US, NZ and Italian Antarctic programs have been a ... wealth of knowledge, including long-term biological data sets, not available anywhere else in the ... scientific resource. The Ross Sea represents an unparalleled natural laboratory in which the results of ...
Meeting Document : WG-EMM-02/60 : Author(s): D. Ainley (USA)
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Population dynamics of wandering albatrosses Diomedea exulans at sub-Antarctic Marion Island: longline fishing and environmental influences
Wandering Albatross Diomedea exulans. The number of birds breeding in this population has fluctuated over ... the past three decades and appears to be the result of both real changes in the size of the population ... and changes in the proportion of the population that attempts to breed in a given year. We describe ... changes in several demographic parameters that appear to be influenced by both environmental and ...
Meeting Document : WG-FSA-02/16 : Author(s): D.C. Nel, P.G. Ryan and J. Cooper (South Africa)
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Report to CCAMLR-XXIX on the implementation of the Agreement on the Conservation of Albatrosses and Petrels
revealed that the most effective measures to reduce incidental take of seabirds in pelagic longline ... ;- setting at night; and- actively deterring birds from baited hooks by means of bird scaring lines, in ... combination with appropriate line weighting. The SBWG also reviewed progress in bycatch mitigation research ... take of seabirds in trawl fisheries is the effective management of offal discharge and fish discards ...
Meeting Document : CCAMLR-XXIX/BG/18 : Author(s): ACAP Secretariat
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Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald Islands using catch-at-age and aged mark-recapture data from the main trawl ground
other model parameters in integrated assessments via CASAL for the Heard and McDonald Islands (HIMI ... to the main trawl ground in which the longest time series of catches and the great majority of ... years 1998 to 2008. A large proportion of the recaptures of fish released in this fishery were aged and ... programmed in R, based on alternative ordinary differential equations (ODE) for within-year population ...
Meeting Document : WG-FSA-10/41 : Author(s): S. Candy, D. Welsford, T. Lamb, J. Verdouw and J. Hutchins (Australia)
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Potential climate change effects on the habitat of Antarctic krill
resource and a major prey item for many fish, birds and mammals in the Southern Ocean. The fishery and the ... sector into two zones: A band around the Antarctic Circumpolar Current in which habitat quality is ... in growth habitat within the range of predators, such as Antarctic fur seals, foraging from breeding ... in summer chlorophyll concentration could have a more significant effect on Antarctic krill habitat ...
Meeting Document : WG-EMM-13/20 : Author(s): S.L. Hill, T. Phillips and A. Atkinson (United Kingdom)
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Marine debris and entanglements at Bird Island and King Edward Point, South Georgia, Signy Island, South Orkneys and Goudier Island, Antarctic Peninsula 2013–2014
Point and zero at Signy Island and Goudier Island. In total, 88 items of marine debris were found in ... association with seabird colonies at Bird Island, most commonly in association with wandering albatrosses (40 ... highest ever recorded in the 24 years of summer surveys and fourth highest ever recorded in 23 years of ... winter surveys at Bird Island. In contrast, the occurrence of beached marine debris at Signy Island was ...
Meeting Document : SC-CAMLR-XXXIII/BG/31 : Author(s): Delegation of the United Kingdom
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UAV for monitoring environmental changes on King George Island (South Shetland Islands) Antarctica: preliminary study on wildlife disturbance
Abstract: The importance of Unmanned Aerial Vehicles (UAVs) in remote sensing is rapidly growing ... . However, knowledge about their potential impact on wildlife is scant, especially in the Antarctic, where ... they are a new tool used in ecological research and monitoring. In this preliminary study we ... investigate potential effects of wildlife disturbance by UAVs. In austral summer 2014-2015 UAV overflights ...
Meeting Document : WG-EMM-15/50 : Author(s): A. Kidawa, M. Korczak-Abshire, A. Zmarz, R. Storvold, M. Rodzewicz, K. Chwedorzewska, S-R. Karlsen and A. Znój (Poland)
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Performance metrics to index the spatial coverage of mark-recapture data
interpreting the biomass estimated from mark recapture data. In 2015, the Scientific Committee identified that ... measures of spatial overlap and potential bias in the development of tag-based biomass estimates are an ... measure of the potential bias in the biomass estimate calculated from non-homogenous spatial mark ... area, SSRUs 88.2H to illustrate its use. We found that the median tag spatial overlap statistic in 2012 ...
Meeting Document : WG-SAM-16/13 : Author(s): C. Marsh, A. Dunn and S. Mormede
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The Scientific Committee on Antarctic Research (SCAR) Annual Report 2015/2016
currently includes 43 member countries and nine ICSU unions. SCAR encourages new members with an interest in ... and its role in the Earth System. SCAR also provides independent and objective scientific advice and ... re-affirmed at meetings of the two groups at the joint CEP/SC-CAMLR Workshop on Climate Change in ... in Malaysia. While there is a diverse range of SCAR research currently underway that is relevant to ...
Meeting Document : SC-CAMLR-XXXV/BG/26 : Author(s): Submitted by SCAR
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An update on the ageing of Antarctic toothfish, Dissostichus mawsoni, from East Antarctica and the Amundsen Sea
and the other by thin sectioning, in order to assess the comparability of age estimates derived from ... vessel in Subarea 88.2 in the 2014-2015 season and in Division 58.4.1 in the 2015-2016 season, were aged ... available for use in the estimation of biological parameters and stock assessments of the respective ... sampling areas in East Antarctica and the Amundsen Sea. Author(s): G. Nowara, B. Farmer, T. Barnes, P ...
Meeting Document : WG-FSA-17/15 : Author(s): G. Nowara, B. Farmer, T. Barnes, P. Ziegler and D. Welsford