Search results
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Otolith elemental signatures reveal habitat shift of Electrona carlsbergi
the biological data in 1990s, however, the habitat shift of this species was still unclear. The ... . carlsbergi hatched in two different areas, E. carlsbergi with Type I otolith could hatched in the oceanic ... waters of sub-Antarctic zone and spend the first year of life in this region. Those individuals move ... Type II otolith could hatched in the coastal waters and are transported (or moved positively) across ...
Meeting Document : WG-FSA-17/65 : Author(s): L. Wei and G.P. Zhu
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Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects
CCAMLR areas is to model the haul-by-haul ratios of catch to effort as the response variable in a ... . Tweedie distribution) for catch that, unlike lognormal or gamma distributions, admits zero values. In ... model (GLMM), in order to provide more efficient estimates of the standardised CPUE time series and more ... as a result of the imbalance in the number of hauls in the year-by-vessel cross-classification ... in a generalised linear model (GLM) with a square-root link function and a unit variance function. A ... values. In addition, random vessel effects are introduced into the GLM, as specifi ed by a generalised ... linear mixed model (GLMM), in order to provide more effi cient estimates of the standardised CPUE time ... -vessel information as a result of the imbalance in the number of hauls in the year-by-vessel cross ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 59–80 : Author(s): Candy, S.G
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Cephalopods and mesoscale oceanography at the Antarctic polar front: satellite tracked predators locate pelagic trophic interactions
Abstract: Predator data and exploratory fishing in the Scotia Sea have revealed the presence of ... cephalopod stocks in the Antarctic Polar Frontal Zone (PFZ). This is a vast, remote region where large ... monitor foraging at sea in January-March 1994. A foraging area at the PFZ, north of South Georgia, was ... RMT25 sampled 200 m layers to 1000 m in daylight and darkness. Cephalopods were simultaneously recovered ...
Meeting Document : WG-EMM-96/12 : Author(s): Murphy, E.J., Trathan, P.N., White, M.G., Bone, D.G., Hatfield, E.M.C., Rodhouse, P.G., Prince, P.A., Watkins, J.L.
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Development of a five-year work plan for the CCAMLR Scientific Committee
Committee should be developed for consideration by the Scientific Committee in 2017 (SC-CAMLR-XXXV ... the first stage in the development of the five-year work plan and draws on recommendations arising ... from SC-CAMLR-XXV and the 2016 Scientific Committee symposium (SC-CAMLR-XXXV/12). In particular, the ... are as follows: Target Stock- Assessments to estimate sustainable yield in established/assessed ...
Meeting Document : WG-EMM-17/02 : Author(s): M. Belchier (Chair of SC-CAMLR)
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Monitoring and managing the effects of environmental change on toothfish assessments
CCAMLR’s fishery reports may be revised to include a new section on changes in model parameters and ... environmental variability and change. We note that causal relationships between observed changes in stock ... consideration of changes in biological parameters and work to understand the impact of these changes on yield ... assessment would reduce uncertainty in management advice. The parameters that could be evaluated to for the ...
Meeting Document : WG-SAM-18/22 : Author(s): M. Pinkerton, A. Dunn, S. Mormede and S. Parker
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Krill fisheries
Antarctic krill (Euphausia superba) may be taken in the Southern Ocean in Subareas 48.1 to 48.4 ... , Subarea 48.6 and Divisions 58.4.1 and 58.4.2. Fishing vessels operate midwater trawls and beam trawls in ... alongside the vessels. The fisheries in Subareas 48.1 to 48.4, and Divisions 58.4.1 and 58.4.2 are ... established fisheries, and the fishery in Subarea 48.6 is an exploratory fishery. However, fishing is ...
Page : Site Section: Fisheries
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Data collection and sharing
expanded so as to meet anticipated needs. The increase in fishing activities that is expected during the ... tasks need to be considered in the light of the resources allocated to them by the Commission. SC (2008 ... Reports. Scientific Committee – In progress – staged implementation of the recommendations of the 2011 ... mechanisms for capacity building and cooperative programs, particularly for Developing States, in order to ...
Page : Site Section: The Organisation
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Brief report on scientific observation on the fishery vessel Mellas (FAO Statistical Area 41, January to July 2006)
Abstract: Materials on results of scientific observation in fishery cruise on the longliner ... “Mellas”, operating under the Ukrainian flag in FAO statistical area 41 in the southwest Atlantic outside ... ) fisheries are submitted. The data on volume of the biological material collected in the cruise, the data on ...
Meeting Document : WG-FSA-06/13 : Author(s): S. Usachev (Ukraine)
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Krill conversion factors
of different krill products are examined and a range of values produced. These are broadly in line ... with those currently in use although the differences are such that use of the traditional factors may ... practice in the fishery, if it is then the use of any of the conversion factors will result in a serious ...
Meeting Document : WG-EMM-01/39 : Author(s): I. Everson (United Kingdom)
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Antarctic fur seal (Arctocephalus gazella) pup growth rates obtained at Cape Shirreff, Livingston Island, South Shetlands: 1994/95 to 1997/98 (CEMP Index C2, Procedure B)
Shirreff's male pups grow faster in order to undergo with better body conditions higher latitude ... was attained in 1995, and females in 1994. Conversely, lowest growth rate for males was attained in ... 1994, and females in 1995 and 1996. This could be explained by differential maternal expenditure ... ). Further conclusions will have to be tested with larger data sets in order to establish possible ...
Meeting Document : WS-AREA 48-98/18 Rev. 1 : Author(s): R. Hucke-Gaete, V. Vallejos and D. Torres (Chile)