Résultats de la recherche
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Simulation experiments and CCAMLR yield estimates using CASAL
“true” states with data that includes bias and variance in observations, as well as the robustness of ... were fitted with an expected percent root mean squared error (%RMSE) of less than 20%. The inclusion of ... , 2004) and investigate model performance from alternative types of observations. In general, most models ... the expected performance of integrated models is required that investigates a range of alternative ...
Meeting Document : WG-FSA-SAM-05/9 : Auteur(s): A. Dunn (New Zealand)
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Krill conversion factors
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 ... of different krill products are examined and a range of values produced. These are broadly in line ... introduce large errors into the estimation of removals. It is uncertain whether discarding is a common ...
Meeting Document : WG-EMM-01/39 : Auteur(s): I. Everson (United Kingdom)
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Testing early life connectivity using otolith chemistry and particle-tracking simulations
stages in the water column substantially influence the direction and extent of connectivity. Used in ... Abstract: We measured the otolith chemistry of adult Scotia Sea icefish (Chaenocephalus aceratus ... compared the chemistry with simulated particle transport using a circulation model. Material laid down in ... chemistry, simulations of the large-scale circulation predicted that particles released at 100-300m depth on ...
Meeting Document : WG-FSA-10/P02 : Auteur(s): J. Ashford, M. La Mesa, B.A. Fach, C. Jones and I. Everson
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CCAMLR-IWC-WS-08
, trends and foraging parameters of baleen whales in the Southern Hemisphere Branch, T.A., Zerbini, A.N ... Report of review group of data sources on odontocetes in the Southern Ocean in preparation for IWC/CCAMLR ... /07 Report of the review group on sources of data on Antarctic fur seals Arctocephalus gazella in the ... Fish as Predators of Krill (Euphausia superba) and Other Pelagic Resources in the Southern Ocean ...
Meeting
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WG-Joint-94
-Joint-94/07 Diagnostic model of functioning of Antarctic krill population in the Cooperation Sea V ... Distribution and abundance of Antarctic krill in the vicinity of Elephant Island during the 1994 austral summer ... indicators of change in marine prey stocks W.A. Montevecchi (Canada) WG-Joint-94/14 Draft Report of the Study ... impact of the krill fishery on penguins in the South Shetlands T. Ichii, M. Naganobu and T. Ogishima ...
Meeting
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Antarctic krill and climate change
must be enhanced. To achieve this, critical knowledge gaps in the biology and ecology of Antarctic ... on the impact of climate change and increasing fisheries on Antarctic krill and Antarctic ecosystems ... , and possible repercussions for resource management. The workshop was organised by the Institute of ... Marine Resources and Ecosystem Studies (IMARES) in the Netherlands, and funded by the European Commission ...
Meeting Document : SC-CAMLR-XXX/BG/03 : Auteur(s): Delegation of the European Union
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Small scale krill surveys: simulations based on observed euphausiid distributions
aggregations. Calculations based on the power of surveys to reliably detect changes in mean density indicate ... be required to detect changes of 40% in the mean if CVs are as high as those obtained in the ... that the coefficient of variation (CV) of mean krill density varies inversely with mean density, and is ... Abstract / Description: An observed distribution of aggregations of the euphausiid, Meganyctiphanes ... on the power of surveys to reliably detect changes in mean density indicate that with probability ... detect changes of 40% in the mean if CVs are as high as those obtained in the simulations. Resume ... contour lines in krill abundance, and this meant across the mean direction of ocean currents. Some of the ... variance when transects are all the same length). For comparison, the actual mean density of krill in the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 245–256 : Auteur(s): Agnew, D.J. and S. Nicol
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Obligations des observateurs concernant l'échantillonnage de Dissostichus spp.
sampling requirements are listed in Annex 1 of the CCAMLR Scheme of International Scientific Observation. 2 ... addition to the sample number in the table. Sample numbers in the table below indicate sampling of all fish ... 1. Observer sampling requirements for Dissostichus spp. in longline fisheries based on the data ... up to the number listed in the table. Fisheries in subarea/division Species Type I Type II Type III ...
Page : Site Section: Science
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Responding to climate change: Adélie penguins confront astronomical and ocean boundaries
changes in the migration patterns of the Ross Sea penguins. (Ecology, 91 (7) (2010): 2056–2069) Author(s ... latitudes for the remainder of the year. The latitudinal range of the Adélie penguin spans ~22o. Penguins ... from northern colonies may not migrate, but due to the high latitude of Ross Island colonies, these ... averaged 12,760 km, with the longest being 17,600 km, and were in part facilitated by pack ice movement ...
Meeting Document : WG-EMM-10/P11 : Auteur(s): G. Ballard, V. Toniolo, D.G. Ainley, C.L. Parkinson, K.R. Arrigo and P.N. Trathan
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SEABIRD: DRAFT USER MANUAL V1.00-2008/06/18
that allows a great deal of flexibility in specifying the population dynamics, parameter estimation ... to set up the input files, descriptions of the population dynamics and estimation methods, and how to ... generate outputs. It also contains a brief overview of the technical specifications of the software, and ... examples of models using SeaBird. SeaBird is designed for flexibility. It allows the user to structure the ...
Meeting Document : WG-SAM-08/P03 : Auteur(s): D. Fu and R.I.C.C. Francis (New Zealand)