Search results
-
Krill distribution variability and fishery conditions within the local ground of Subarea 48.3 in June 1991
Abstract: Experiments on estimation of krill transport by a current and its distribution ... characteristics variability were carried out within a local ground of Subarea 48.3 in the fleet operation area. It ... is shown that krill transport by wat4er flow across the fishing ground results in variation of fished ... krill aggregations distribution, and thus, in unstable indices of fishing vessels activity. During the ...
Meeting Document : WG-EMM-95/04 : Author(s): Kasatkina, S.M.
-
Entanglement in man-made debris of Antarctic fur seals at Bird Island, South Georgia
Abstract: Neck collars of man-made marine debris were seen on 208 Antarctic fur seals (and ... removed from 170) during the 142 days of the 1988-89 pup-rearing season at Bird Island, South Georgia ... . This represents at least 0.1% of the total Bird Island population and a minimum of 0.4% of animals in ... ) formed 59% of collars, nylon string (15%), fishing net (13%) and six other materials comprising the rest ...
Meeting Document : CCAMLR-VIII/BG/05 : Author(s): J.P. Croxall, S. Rodwell and I.P. Boyd (United Kingdom)
-
A sensitivity analysis of a simple krill individual-based model designed to investigate length-based recruitment indices
Abstract: As part of the CCAMLR Scheme of International Scientific Observation, observers on ... -board Krill (Euphausia superba) fishing vessels measure the length of individual Krill sampled from ... commercial catches. These extremely valuable data may be used to monitor the state of harvested Krill ... to the interpretation of any observed trend. To illustrate these interactions a simple mechanistic ...
Meeting Document : WG-EMM-13/23 : Author(s): S. Thanassekos and K. Reid (Secretariat)
-
Proposals on standardization of toothfish resource research
Abstract: The methodology of modern trawl surveys carried out the ICES responsibility area is ... discussed in the context of discussion at the Scientific Committee and the CCAMLR Commission in 2018 ... regarding the longline survey methodology in Division 58.4.1. It is shown that the methodology of modern ... bottom trawl surveys requires a standardized design of the spatial location of trawl samples and standard ...
Meeting Document : WG-SAM-2019/34 : Author(s): S. Kasatkina
-
Population structure of the Antarctic toothfish, Dissostichus mawsoni from the Areas 58 and 88 in the Antarctic Ocean based on mitochondrial and microsatellite DNA markers
around the Antarctic Continent since 1997, managed solely by the Commission for the Conservation of ... Antarctic Marine Living Resources (CCAMLR). Although defining genetic or stock structure of populations is ... crucial for improving fishery management of this species, the number of populations or stocks of D ... genetic and phylogeographic structure of the Antarctic toothfish populations across 11 geographic ...
Meeting Document : WG-FSA-2019/36 : Author(s): H.-K. Choi, J.E. Jang, S.Y. Byeon, S. Chung, S.-G. Choi, H. W. Kim and H.J. Lee
-
Diets of Antarctic toothfish estimated from fatty acids and stable isotopes
examine feeding ecology of Antarctic toothfish and food webs of Antarctic marine ecosystem. Specimens of ... locations of he Antarctic Waters. We investigated ontogenetic and spatial variability in resource ... utilization of Antarctic toothfish and distribution patterns of FA profiles in various organisms because of ... the particular importance of accumulation of lipid deposits in their tissue. Toothfish trophic niche ...
Meeting Document : WG-FSA-17/12 : Author(s): C.-K. Kang, S.-G. Choi, J. Lee, J. Lee and D. An
-
Report on the status of wandering, black-browed and grey-headed albatrosses at South Georgia
Abstract: Surveys of all known breeding sites of wandering, black-browed and grey-headed ... 1,553 pairs of wandering albatrosses, 75,500 pairs of black-browed albatrosses and 47,800 pairs of grey ... predominantly yacht-based survey of black-browed and grey-headed albatrosses over the whole of South Georgia ... conducted in the mid 1980s, numbers of these two species appear to have decreased by 26% and 14 ...
Meeting Document : WG-FSA-04/71 : Author(s): S. Poncet (United Kingdom),G. Robertson (Australia), R. Phillips (United Kingdom), K. Lawton (Australia), B. Phalan, J. Croxall and P. Trathan (United Kingdom)
-
Acoustic data analysis and models of krill spatial distribution
used in three descriptors of krill spatial aggregation: power spectra for krill biomass fluctuations in ... space, semivariogram (spatial autocorrelation of krill biomass) and the frequency distribution of krill ... biomass estimate. The wavenumber spectrum resembles a white noise at scales of 2-20 km, although at scales ... smaller than 1 km the spectrum appears to lose its power significantly. The semivariance of biomass does ...
Meeting Document : SC-CAMLR-VII/BG/25 : Author(s): United States of America
-
Preliminary assessment of the South Georgia ray populations
from a variety of sources, and included the consideration that since 2004 the practice of cutting rays ... off lines at the water surface should have increased survivorship of discarded rays, although this ... survivorship has been found to decrease as depth of fishing increases. Our analysis is concentrated on catches ... deeper than 800m, and we have assumed that the majority of catches were of the Amblyraja variant species ...
Meeting Document : WG-SAM-07/11 : Author(s): D.J. Agnew, R. Mitchell, T. Carruthers, J. Roberts, R. Hillary and J. Pearce (United Kingdom)
-
Entanglement of Antarctic fur seal Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 2001 winter and the 2002 breeding season
Abstract: Results of the survey of entanglements of Antarctic fur seals at Bird Island, South ... here. The overall number of entanglements showed an increase from recent years, with 20 entanglements ... reported over winter and 48 during the summer breeding period. The number of winter entanglements was same ... as last year, however the summer entanglements were up 118%. Severe injuries accounted for 30% of ...
Meeting Document : SC-CAMLR-XXI/BG/04 : Author(s): Delegation of the United Kingdom