Résultats de la recherche
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Relationship between distribution of Antarctic krill (Euphausia superba) and environmental index MTEM-200 in the Antarctic Ocean throughout the year
compared it with horizontal distribution of fishing. The result indicated the strong correlation between ... stable for fishing were distributed in a narrow range with steep meridional gradients between-1.0 and 1.0 ... distribution based on the Discovery Report’s net sampling coincided with this study results and each of the ... isopleths of MTEM-200 substantially corresponded with each oceanic front in the Southern Ocean. MTEM-200 can ...
Meeting Document : WG-EMM-08/32 : Auteur(s): M. Naganobu, T. Kitamura and K. Hasunuma (Japan)
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Modelling the impact of krill fishing on seal and penguin colonies
with the foraging area of land-based predators such as seals and penguins in the Antarctic Peninsula ... ) are necessary given that there is a flux of krill through this region with its islands habited by ... spatial modelling framework that could be used to couple flux estimates with estimates of removals by both ... features with the Antarctic Peninsula ecosystem in that there is a substantial advective flux of either ...
Meeting Document : WG-EMM-05/14 : Auteur(s): É.E. Plagányi and D.S. Butterworth (South Africa)
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Interannual variability in Antarctic krill (Euphausia superba) density at South Georgia, Southern Ocean: 1997 – 2013
g m-2) and its distribution was highly skewed with many zero observations. Within each survey the ... mean krill density was significantly correlated with the top 7% of the maximum krill densities observed ... , 2001-2003, 2005-2007) of high values (µ > 30 g m-2) interspersed with years (1999-2000, 2004, 2009 ... -2010) of low density (µ < 30 g m-2). This pattern showed three different periods, with fluctuations ...
Meeting Document : WG-EMM-14/P04 : Auteur(s): S. Fielding, J. Watkins, P. Trathan et al.
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CCAMLR Statistical Bulletin, Vol. 31 selected tables
with fact tables (aggregated data) and dimensions (year, month and reference data). The reference ... Noruega New ZealandNZL Nouvelle-Zélande Новая Зеландия Nueva Zelandia PolandPOL Pologne Польша Polonia ... with viscera intact 1.7 Etêté et équeuté, viscères intactes Без головы и хвоста (тушка), непотрошена ... потрошеная Pescado descabezado sin vísceras Whole fish with viscera removed 1.1 Poisson entier, viscères ...
Document : Site Section: Data
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SUMMER SURVEY OF FUR SEALS AT PRINCE EDWARD ISLAND, SOUTHERN INDIAN OCEAN
seals also had increased, with several new breeding colonies along the east coast and one at Kent Crater ... colony among Subantarctic fur seals north of Boggel Beach remained small, with increased numbers of ... 11.4% per year from 2001. With an estimated 810 pups, the Antarctic fur seal is still in the rapid ...
Meeting Document : WG-EMM-10/P15 : Auteur(s): M.N. Bester, P.G. Ryan and J. Visagie
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Research plan for the Spanish exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2: Update of stage 2 (2013/14 season) and preliminary results of stage 1 (2012/13 season) according to WG-SAM advice
not reach the threshold to start the depletion. A new prospective estimation of the local biomass (B ... estimation of the biomass of the SSRUs (B SSRU), maximal and minimal, considering areas with high and low ... densities, with a better fit of the regression and lower residuals than the previous analysis. An ... analysis of relevant sea-ice conditions in the last 11 seasons in these areas along with a summary of the ...
Meeting Document : WG-FSA-13/15 : Auteur(s): R. Sarralde, L.J López Abellán and S. Barreiro (Spain)
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Advances in the use of airborne aerial survey techniques to estimate krill-eating penguin populations in Area 48
Abstract: In this paper we provide WG-EMM with an update on aerial survey methods used to provide ... new estimates of penguin population distribution and abundance. This project will continue to develop ...
Meeting Document : WG-EMM-14/05 : Auteur(s): P.N.Trathan, A.J. Fox, N. Ratcliff and P.T. Fretwell (United Kingdom)
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Sensitivity investigation of the SDWBA Antarctic krill target strength model to fatness, material contrast and orientation
marine organisms. A stochastic version, the so-called SDWBA model, is endorsed by CCAMLR to predict the ... the new SDWBApack age2010 was evaluated using sensitivity tests of some parameters with regard to ... object and the surround- ing medium. For weak scatterers with complex shapes, such as zooplankton ... . Exact solutions can be achieved with analytical restrictions but at the cost of a limited range of ... an image shot with the ani- mal projected in lateral aspect. The authors found a good fit between ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 97–122 : Auteur(s): Calise, L. and G. Skaret
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Utilising data from ecosystem monitoring for managing fisheries: development of statistical summaries of indices arising from the CCAMLR Ecosystem Monitoring Program
new value after either 10 or 20 years to have value = 2.0. The variance of the distribution with ... included in the data over years. populations along with features of the physical environment. One of the ... tasks of the CCAMLR With regard to (i), the approach so far has been to attempt a 'human integration ... the status of the predators, their prey and the environment. With regard to (ii) a method is ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 101–117 : Auteur(s): de la Mare, W.K. and A.J. Constable
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Distribution and biology of grey notothen (Lepidonotothen squamifrons) around South Georgia and Shag Rocks (Southern Ocean) CCAMLR Subarea 48.3.
distribution, size, maturity, and diet. Distribution was patchy with aggregations in specific ‘hotspots’ to the ... dominated by salps/tunicates, but with ontogenetic and depth variations in prey composition. Enhanced ... modelling and spatial marine management. Author(s): S. Gregory, J. Brown and M. Belchier (United Kingdom ...
Meeting Document : WG-FSA-12/34 : Auteur(s): S. Gregory, J. Brown and M. Belchier (United Kingdom)