Résultats de la recherche
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30 years of krill fisheries management – challenges remain
sector, an area that has been warming rapidly, resulting in a reduction in the extent and duration of ... winter sea ice. CCAMLR needs to maintain a precautionary approach to krill fisheries management. The ... establishment of CM 51-07 – distributing the trigger limit among statistical subareas – was a step in the right ... review of CEMP has become a high priority for the Working Group on Ecosystem Management and Monitoring ...
Meeting Document : CCAMLR-XXX/BG/19 : Auteur(s): Submitted by ASOC
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Population assessment of Patagonian toothfish in Subarea 48.4 – 2011 update
catch at age model generates a yield of 52 tonnes based on CCAMLR decision rules. In 2006 the northern ... , and for the purpose of the experimental work leading to a stock assessment. Data collected in the ... fishing controlled by maintenance of current north-south area boundaries, application of a D. eleginoides ... 52 tonne catch limit to both areas with a sub-division of 5 tonnes allocated specifically for D ...
Meeting Document : WG-FSA-11/38 : Auteur(s): J. Roberts, R. Mitchell and R. Wakeford (United Kingdom)
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Beach litter survey Signy Island, South Orkney Islands, 1993/94
Abstract: A beach litter survey was carried out on Signy Island, South Orkney Islands during the ... clues regarding their origin noted. At Foca Cove, a total of 118 items were recovered with a combined ... weight of 18.35 kg. At Cummings Cove, a total of 170 items were recovered (6.21 kg) and at Starfish Cove ... , a total of 6 items were found (0.30 kg). It is clear that almost all debris found originates from ...
Meeting Document : CCAMLR-XIII/BG/11 : Auteur(s): Delegation of United Kingdom
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Swarm characteristics of Antarctic krill Euphausia superba relative to the proximity of land during summer in the Scotia Sea
response to local predatory threats over short spatial and temporal scales. (Mar. Ecol. Prog. Ser., (in ... swarms identified with a Simrad EK60 (38 kHz, 120 kHz) echosounder were grouped into 4 categories ... -sectional areas of swarms were significantly larger inshore, with a mean value of 120 m 2 in the 0 to 50 km ... ind. M–3 elsewhere. A large proportion of the biomass was concentrated into a small number of large ...
Meeting Document : WG-EMM-10/P09 : Auteur(s): T. Klevjer, G.A. Tarling and S. Fielding
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An updated spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region
model for Antarctic toothfish in the Ross Sea region, for a medium scale spatial resolution (189 spatial ... population was restricted to those cells in which at least 5% of cell area was of a depth deemed suitable as ... unsatisfactory in previous models, with a much flatter maturity ogive than that derived through histology. In the ... that a proportion of the mature fish spawn each year. The model estimation of the maturity ogive is now ...
Meeting Document : WG-SAM-14/31 : Auteur(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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UAV for monitoring environmental changes on King George Island (South Shetland Islands) Antarctica: preliminary study on wildlife disturbance
they are a new tool used in ecological research and monitoring. In this preliminary study we ... by combustion engine, symptoms of vigilance were noticed with penguins looking up and around for a ... behavior was observed during the overflights. Plans for a systematic monitoring of UAV impact on wildlife ... , as well as preliminary guidelines for the next field season were formulated. Author(s): A. Kidawa, M ...
Meeting Document : WG-EMM-15/50 : Auteur(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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Informing and seeking advice from WS-SM 2018 about the revisions of the WSMPA proposal
Abstract: Following the submission of a first draft Conservation Measure for establishing a MPA ... and will submit a revised CM proposal to CCAMLR 2018. This document informs The Workshop on Spatial ... 48.5 as a result of further analyses and modelling of the habitat of adult Antarctic toothfish ... outcome of the CCAMLR Workshop for the Development of a D. mawsoni Population Hypothesis for Area 48. The ...
Meeting Document : WS-SM-18/08 : Auteur(s): S. Hain, K. Teschke, H. Pehlke and T. Brey
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Report of the UK Groundfish Survey at South Georgia (CCAMLR Subarea 48.3) in January/February 2019
Abstract: The UK undertook a bottom trawl survey of CCAMLR sub-Area 48.3 on the FV Sil between ... the 27thth January and 5th February 2019. A total of 73 random and representative hauls were completed ... calculated at 50,897 tonnes with a lower 1-sided 95% interval estimate of 30,288 tonnes. This is lower than ... . superba as a prey species varied across the four regions at South Georgia, ranging from 10.48% IRI in the ...
Meeting Document : WG-FSA-2019/20 : Auteur(s): S. Gregory, P. Hollyman, T. Earl, A. Clement, J. Visagie, L. Featherstone and M. Belchier
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Histopathology of Antarctic krill (Euphausia superba) bearing black spots
Abstract: In Antarctic krill, Euphausia superba, sampled by a Japanese scientific observer ... onboard a krill fishing vessel in the winter of 2003 and 2006 in the South Georgia region, the Antarctic ... observations revealed that the black spots were melanized nodules. A single melanized nodule often contained ... always accompanied by a tumor-like mass of unknown large heteromorphic cells, which seemed to be derived ...
Meeting Document : WG-EMM-07/29 : Auteur(s): S. Miwa, T. Kamaishi, T. Matsuyama, T. Hayashi and M. Naganobu (Japan)
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Male krill grow fast and die young
). This pattern was reproduced by a model simulation that assumed faster growth and a shorter life span ... of males from the field (net collected data and penguin diet data) showed a decline in proportion of ... males when several years of low recruitment followed a recruitment pulse. These results lead us to ... conclude that male krill grow faster and have a shorter lifespan than females in the natural environment ...
Meeting Document : WG-EMM-07/P6 : Auteur(s): S. Kawaguchi, L.A. Finley, S. Jarman, S.G. Candy (Australia), R.M. Ross, L.B. Quetin (USA), V. Siegel (Germany), W. Trivelpiece (USA), M. Naganobu (Japan) and S. Nicol (Australia)