Résultats de la recherche
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Modelling and Decision Making as Part of the CCAMLR Management Regime
environment essential for the effective management of the Antarctic marine ecosystem within the requirements ... of CCAMLR Article II. Eight attributes (purpose, description, variables, driving forces, time ... development of suitable simulations of important Antarctic marine ecosystem interactions and to facilitate the ... formulation of a suitable decision-making protocol for management purposes. Author(s): D.G.M. Miller (South ...
Meeting Document : WG-CSD-88/10 : Auteur(s): D.G.M. Miller (South Africa)
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plotImage – software for producing augmented image plots of spatially referenced data
Abstract: Software is presented for the automated production of standardised image plots of ... spatially referenced data. While developed to satisfy the specific requirements of WG-FSA, the routines have ... been developed to be as generic as possible and may be useful for displaying a wide range of data. This ... Working Groups for the display of spatially referenced data. Author(s): J.P. McKinlay (Australia) Title ...
Meeting Document : WG-SAM-10/22 : Auteur(s): J.P. McKinlay (Australia)
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Microincrement analysis in otoliths of Notothenia rossii fingerlings from the South Shetland Islands to estimate early life history timings and to validate annulus formation
phase fingerlings selected from a total sample of 364 early juveniles caught mainly in summer from 2003 ... date of capture showed two main periods of larval hatching separated by 5-6 months, one in late summer ... , indicating a timing of demersal settlement of about eight months from hatching. The age/length frequency ... distribution of fish sampled in spring 2010 showed the simultaneous presence of two different cohorts ...
Meeting Document : WG-FSA-12/04 : Auteur(s): E. Barrera-Oro (Argentina) and M. La Mesa (Italy)
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Using outputs from spatial population models of Antarctic toothfish in the Ross Sea region to investigate potential biases in the single population model
assumptions of the stock assessment for Antarctic toothfish in the Ross Sea region using spatially explicit ... operating models. The method allows investigation of potential biases and uncertainty in the assumptions of ... Population Model (SPM), to develop spatially explicit movement models of the Antarctic toothfish in the Ross ... were then used in a single area stock assessment model derived from the stock assessment model of ...
Meeting Document : WG-FSA-12/45 : Auteur(s): S. Mormede and A. Dunn (New Zealand)
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A spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region
% of the depth is deemed suitable as habitat for toothfish (120 cells – semi-restricted model), and ... – restricted model) or allowed to occupy the entire Ross Sea region including depths outside of those normally ... about the distribution of toothfish in areas where no fishing has occurred, such that the unrestricted ... model estimates fish movements into cells outside of the fished area including those with implausible ...
Meeting Document : WG-FSA-13/53 : Auteur(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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Winter distribution and condition of Antarctic krill in relation to sea-ice and water column production in the South Shetland Islands during Austral Winter 2013
Abstract: Acoustic and net sampling of Antarctic Krill and other euphausiids was conducted at 88 ... was expansive (north of 60 S around Elephant Island) and the sea ice concentration was mostly more ... than 50%. Observations of birds and mammals showed that many species were found in southwestern ... Bransfield Strait, associated with the high concentrations of krill, an area targeted by the krill fishery in ...
Meeting Document : WG-EMM-14/13 : Auteur(s): C.S. Reiss, J. Walsh, K. Dietrich and J.A. Santora (USA)
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How similar are CEMP indices from adjacent locations? A case of study using Pygoscelis adeliae and P. papua monitoring data from three breeding colonies on King George Island
Abstract: What is the spatial scale of monitoring conducted at an individual CCAMLR Ecosystem ... species that are monitored at three sites on King George Island/Isla 25 de Mayo, within 30km of one ... another. We used five indices that fall under three main categories of census (breeders and chicks ... found evidence of and site- and species-specific differences that highlight heterogeneity in indices of ...
Meeting Document : WG-EMM-14/43 : Auteur(s): M.M. Santos (Argentina), M. Korczak-Abshire (Poland), M.A. Juáres (Argentina), W.Z. Trivelpiece and J.T. Hinke (USA)
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An experimental approach for the Antarctic krill fishery: advancing management and conservation through the use of Krill Reference Areas and Krill Fishing Areas
to fishing, coupled with the use of Krill Reference Areas and Krill Fishing Areas. We use the ... characteristics, as the geographic and spatial basis for a set of differing treatments. We also consider the ... mainly associated with penguin research. We identify a number of treatments based on seasonal, or year ... approaches could be used to enhance ecological understanding of possible impacts (or lack thereof) of krill ...
Meeting Document : WS-SM-18/05 : Auteur(s): P.N Trathan and O.R. Godø
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Ageing two myctophid fishes using otolith from king and macaroni penguins in the Marion Island and its implication to feeding preference of penguins on those myctophids
distributed biological resources in the Antarctic waters, which are the important food sources of top ... predators, particularly penguins. However, the information on age of those fishes are very limited and ... of myctophids in the Antarctic ecosystem. Using the otolith samples collected from King and Macaroni ... penguins in the Marion Island, the present study examined the age determination and precision of age ...
Meeting Document : WG-FSA-18/74 : Auteur(s): M. Duan, G.P. Zhu, A. Makhado and L. Wei
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Feeding ecology of the two sympatric fish species Notothenia rossii and N. coriiceps from western Antarctic Peninsula: a fatty acids and stable isotopes approach
useful tool to elucidate the flow of energy and trophic interactions in an ecosystem and to analyse the ... diet of species that are hard to observe while feeding. Herein we compare FA profiles and SI ... composition (nitrogen, δ 15 N and carbon, δ 13 C) of muscle tissue from two sympatric Antarctic fish species ... - Notothenia rossii and N. coriiceps – that are key components in the inshore ecosystem of the South Shetland ...
Meeting Document : WG-FSA-2019/26 : Auteur(s): E. Moreira, M. Novillo, K. Mintenbeck, E. Barrera-Oro and M. De Troch