Resultados de la búsqueda
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The gentoo penguin as a candidate species for the CCAMLR Ecosystem Monitoring Program
in the CEMP. The extensive dependence of this species in these ISRs on Euphausia superba, (including ... in winter), its residence in the ISRs in winter and its early attainment of sexual maturity are all ... Regions (ISRs) of the CCAMLR Ecosystem Monitoring Program), we suggest (and provide a full bibliography of ... features of special relevance to the CEMP. File: 30-Croxall-and-Williams.pdf ... dependence of this species in these ISRs on Euphausia superba, (including in winter), its residence in the ... ). Only in one year (1985) did the proportion of E. superba fall below 65%. During the winters of 1987 ... and 1988, E. superba was also the main component (c. 90%) of the diet at South Georgia (Williams, in ... krill is the main (70%+) component of the diet (Jablonski, 1985; Trivelpiece et al., 1987). In both ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 483–488 : Autor(es): Croxall, J.P. and T.D. Williams
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The gentoo penguin as a candidate species for the CCAMLR Ecosystem Monitoring Program
in the CEMP. The extensive dependence of this species in these ISR’s on Euphausia superba, (including ... in winter), its residence in the ISR’s in winter and its early attainment of sexual maturity are all ... Island, South Georgia and at the South Shetland Islands (both within Integrated Study Regions (ISR’s) of ... the CCAMLR Ecosystem Monitoring Programme (CEMP)), we suggest (and provide a full bibliography of ...
Meeting Document : WG-CEMP-90/14 : Autor(es): J.P. Croxall and T.D. Williams (United Kingdom)
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Sea surface temerature anomalies near South Georgia: relationships with the South Atlantic and the Pacific El Niño regions
variability around South Georgia. High levels of autocorrelation were evident in the sea surface temperature ... also reflected the variability in the Georgia Basin. The high levels of intra annual variability at ... variability in the onset of summer warming is potentially of great importance to the functioning of the ... Abstract: The sea surface temperature dataset of Reynolds and Smith (1994) was used to describe ...
Meeting Document : WS-AREA 48-98/10 : Autor(es): P. Trathan and E.J. Murphy (UK)
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Integrated stock assessment for the Heard Island and the McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery (Division 58.5.2)
eleginoides) at the Heard and the McDonald Islands (Division 58.5.2) with data until the start of August 2013 ... . Compared to the last assessment in 2011, this assessment updated the growth model and compared the effects ... of the longline hauls into two sub-fisheries that were depth-stratified but not regionally-explicit ... . Alternative trawl sub-fisheries were evaluated within the assessment model in different scenarios. All ...
Meeting Document : WG-FSA-13/24 : Autor(es): P. Ziegler, S. Candy and D. Welsford (Australia)
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How precautionary is the policy governing the Ross Sea Antarctic toothfish (Dissostichus mawsoni) fishery?
the present and future population sizes of the Antarctic toothfish (Dissostichus mawsoni Norman) in ... the likely effects of food web responses to harvesting of toothfish in the Ross Sea, or to predict the ... Abstract: This article reviews the adequacy of data and models currently being used to estimate ... accurate picture of total population size, and that estimates of both the pre-exploitation spawning stock ...
Meeting Document : WG-FSA-13/P02 : Autor(es): P.A. Abrams
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Shipboard field operations conducted during the 1989 austral summer by the US Antarctic Marine Living Resources (AMLR) Program
austral summer in waters adjacent to the Antarctic Peninsula and South Georgia are described. Operations ... , 9) net sampling for krill in association with the hydroacoustic survey, 10) sampling for larval ... ): Delegation of USA Title: Shipboard field operations conducted during the 1989 austral summer by the US ... Abstract: Field research activities conducted aboard the NOAA Ship Surveyor during the 1989 ...
Meeting Document : SC-CAMLR-VIII/BG/34 : Autor(es): Delegation of USA
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Characterising the preferred at-sea habitats used by chinstrap penguins and the fishery for Antarctic krill: slow-flowing, nearshore waters over shallow bathymetry
locations of animals during the breeding season from untracked colonies, even in different regions and ... that better understanding of krill retention and depletion in areas used by natural predators and the ... of chinstraps breeding at the South Shetland Islands, based on the distance from the colony, and the ... bearing to the shelf edge, adjusting for the at-sea density of Pygoscelis penguins from other colonies ...
Meeting Document : WG-EMM-17/34 : Autor(es): P.N. Trathan, V. Warwick-Evans, J. Hinke, E.F. Young, A.P.B. Carneiro, M.P. Dias, K. Kovacs, O.R. Godø and M. Santos
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Species identification and age estimation for the ridge-scaled macrourid (Macrourus whitsoni) from the Ross Sea
whitsoni) from the Ross Sea Abstract / Description: Samples of macrourid rattail by-catch from the ... toothfish fishery in the Ross Sea dependency in 2002 were identified by observers and returned to New ... Zealand for subsequent confirmation of their identity by researchers from the National Institute of Water ... the geographic source of the aged sample. Counts of translucent zones were made from baked and cross ... , Wellington New Zealand Abstract Samples of macrourid rattail by-catch from the toothfi sh fi shery in the ... otoliths of the ridge-scaled macrourid (M. whitsoni) sampled from the commercial longline fi shery in the ... -catch of the fi shery and accounted for about 10% of total landed weight (Hanchet et al., 2002). In ... -catch, the species is clearly of com- mercial importance, and is in need of monitoring and management ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 37–51 : Autor(es): Marriott, P., P.L. Horn and P. McMillan
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Consumption estimates for male Antarctic fur seals at the South Orkney Islands during the post mating migration
Abstract: The estimates of fur seal consumption of krill in subareas 48.1 to 48.3 which have been ... used in ecosystem modelling and CCAMLR’s risk assessment approach, are based on the distribution of fur ... in order to provide more robust estimates of the fur seal impact on this region that can be used to ... their biomass is orders of magnitude less than those of penguins. As a result the estimates of fur seal ...
Meeting Document : WG-EMM-18/10 : Autor(es): I. Staniland and S. Hill
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An integrated stock assessment for the Heard Island and the McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery (Division 58.5.2)
the proportion of tag-recaptures in survey catch on the main trawl ground. All model runs were ... best available estimates of model parameters, the use of abundance estimates from a random stratified ... composition data to aid with the estimation of year class strength and selectivity functions of sub-fisheries ... . Compared to the 2013 assessment, this assessment takes into account the recommendations of WG-FSA-2013, SC ...
Meeting Document : WG-FSA-14/34 : Autor(es): P. Ziegler, D. Welsford, W. de la Mare and P. Burch (Australia)