Resultados de la búsqueda
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Light levels experienced by foraging Antarctic fur seals, Arctocephalus gazella
light levels experienced by a diving marine mammal. TDRs were deployed on 10 female Antarctic fur seals ... summer. Depth and light measurements were made during 11 foraging trips which lasted on average (± SE ... ) 7.1 ± 0.7 d. A total of 25657 dives were recorded with a mean dive depth and duration of 18.0 ± 3.6 m ... with depth did not follow a simple exponential decrease as recorded in clear oceanic waters. TDRs ...
Meeting Document : WG-EMM-99/28 : Autor(es): D.J. McCafferty, I.L. Boyd and T.R. Walker (UnitedKingdom)
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INDICATIVE ESTIMATES OF BIOMASS AND YIELD OF WHITSON’S GRENADIER (M. WHITSONI) ON THE CONTINENTAL SLOPE OF THE ROSS SEA IN SUBAREAS 88.1 AND 88.2
in 2002/03 (CCAMLR-XXI, para 11.53). The bycatch limit for macrourids in Division 58.5.2 had in turn ... been based on the extrapolation of catch rates from a trawl survey of M. carinatus on Banzare Bank. Two ... represented only 25% of the continental slope of the Ross Sea, the data could not be used to calculate a ... macrourid CPUE from the fishery. The uncertainty of the extrapolated biomass was estimated through a ...
Meeting Document : WG-FSA-08/32 : Autor(es): S.M. Hanchet, D. Fu and A. Dunn (New Zealand)
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Penguin demography and winter distributions in the Antarctic Peninsula region
present a conceptual model linking increasing temperatures and decreasing sea ice cover in the Antarctic ... Peninsula region have increased 4-5°C over the last 50 years (Smith et al. 1996, 1999), affecting the ... ice cover, has profoundly impacted the Antarctic, krill-based food web (Loeb et al. 1997, Smith et al ...
Meeting Document : WG-EMM-01/32 : Autor(es): W. Trivelpiece and S. Trivelpiece (USA)
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The CAML/SCAR-MarBIN Biogeographic Atlas of the Southern Ocean
) south of 40°S. The hard copy version in large format will be extended by a dynamic online version on the ... Information Network (www.scarmarbin.be), a new initiative, the multi-authored “Biogeographic Atlas of the ... contributors under the aegis of SCAR, will constitute a major scientific output of CAML and SCAR-MarBIN. It ... will take the form of a collection of maps and synthetic texts presenting the key biogeographic ...
Meeting Document : CCAMLR-XXX/BG/11 : Autor(es): Submitted by SCAR
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Diagnostic plots of stock assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region for the years 1997–98 to 2014–15
their main diagnostics are described in Mormede et al. (2015). The CASAL files for models R1 and R2 were ... provided to the CCAMLR Secretariat as a zip file. In this paper we present the results for first model R1 ... in Mormede et al (2015) including process error weightings and the MPD objective function components ... . Author(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand) Title: Diagnostic plots of stock ...
Meeting Document : WG-FSA-15/39 : Autor(es): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
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Reconciling theoretical versus empirical target strengths of krill; effects of phase variability on the distorted wave Born approximation
Abstract: A model was recently proposed to predict the target strengths (TS) of Antarctic krill ... , Euphausia superba, versus incidence angle (?) [McGehee et. al, 1998, Deep Sea Res. Pt2, 45(7)1273-1294 ... scattering from elements of a discretized bent cylinder. It was empirically validated at 120 kHz near ... elements of a discretized bent cylinder (krill model) causes a dramatic flattening in the side-lobe regions ...
Meeting Document : WG-EMM-02/50 : Autor(es): D.A. Demer and S.G. Conti (USA)
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Model diagnostics for the Antarctic krill assessment for Subarea 48.1
populations (Ziegler et al., 2015; SC-CAMLR-XXXIV/05, Appendix D). Similar diagnostics can be applied to any ... assessment being developed to set catch limits for Antarctic krill in Subarea 48.1. A "base-case" ... ; configuration of the krill model was presented to EMM in 2015 (Kinzey et al. 2015a) along with seven alternative ... description of the base case and differently-weighted configurations with a table of likelihood components for ...
Meeting Document : WG-FSA-15/60 : Autor(es): D. Kinzey, G.M. Watters and C.S. Reiss (USA)
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YEAR OF THE SKATE SAMPLING PROTOCOL: LEARNING FROM THE 2007–08 SEASON SAMPLING PROTOCOL ON NZ VESSELS
2004, paragraphs 4.172, 4.177 and 4.199). While Dunn et al. (2007) and Agnew et al. (2007) have ... required before a full assessment can be carried out. In 2007, WG-SAM recommended (CCAMLR XXVI WG-SAM ... paragraph 8.10) a review of data requirements and a “Year of the Skate” for 2008–09 whereby data collection ... effort on bycatch will be concentrated on skate species in that year in order to inform a full skate ...
Meeting Document : WG-FSA-08/49 : Autor(es): S. Mormede (New Zealand)
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TOWARDS THE BALANCED STOCK ASSESSMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA
, 2005, 2006; Vasilyev et al., 2006, 2007), takes care about robustness of analysis and includes a number ... toothfish in the Ross Sea. One of them, the CASAL model, (Dunn & Hanchet, 2007; Bull et al., 2007) is ... the stock (Vaslilyev et al., 2007), in CASAL the solution was mostly supported by signals from tagging ...
Meeting Document : WG-SAM-08/08 : Autor(es): D. Vasilyev and K. Shust (Russia)
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Final report of the CEMP Special Fund project to develop an image processing software tool (SPPYCAMS) for analysis of camera network monitoring data
CEMP Fund support has been superseded with a new version which has additional image-processing, data ... Abstract: We provide a final report on the CEMP Special Fund project ‘Developing an image ... support from the CEMP Fund in 2015/16. An earlier version of the software developed prior to receiving ... generalised output tables for specific CCAMLR needs, will allow a seamless transition from image processing to ...
Meeting Document : WG-EMM-2019/44 : Autor(es): C. Southwell, A. Sikka, J. Cusick, H. Achurch, A. Lashko, K. Newbery, M. Salton, J. Kool, J. Hinke, G. Watters, M. Santos, G. Milinevsky, M. Korczak-Abshire, N. Ratcliffe, P. Trathan, A. Barbosa and L. Emmerson