Resultados de la búsqueda
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Informing the Working Group on Fish Stock Assessment about the revisions of the WSMPA proposal
Abstract: Following the submission of a first draft Conservation Measure for establishing a MPA ... in the Weddell Sea (WSMPA) to CCAMLR 2016, Germany has carried out further work on the WSMPA proposal ... and the EU has submitted a revised CM proposal to CCAMLR 2018. This document is based on similar ... documents submitted to WG SAM 2018 and the CCAMLR Workshop on Spatial Management (WS-SM-18). It intends to ...
Meeting Document : WG-FSA-18/08 Rev. 1 : Autor(es): S. Hain, K. Teschke, H. Pehlke and T. Brey on behalf of the German Weddell Sea MPA project team
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The role of fish in the Antarctic marine food web: differences between inshore and offshore waters in the southern Scotia Arc and west Antarctic Peninsula
terms of biomass for most of the high level predators from demersal fish up to whales. This has no ... Abstract: The role of fish in the Antarctic food web in inshore and offshore waters is analysed ... taking as an example the coastal marine communities of the southern Scotia Arc (South Orkney Islands and ... South Shetland Islands) and the west Antarctic Peninsula. Inshore, the ecological role of demersal fish ...
Meeting Document : WG-FSA-02/6 : Autor(es): E. Barrera-Oro (Argentina)
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Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data
age frequencies, provided no further information on the biomass trajectories in the model considered ... Abstract: Antarctic and Patagonian toothfish stocks in the Antarctic have been assessed within ... initially run annually, but have been run biennially since 2007. This document investigates the impact on ... tag recapture data. Examining the impact of considering a subset of the available data simulates both ...
Meeting Document : WG-SAM-11/17 : Autor(es): S. Mormede (New Zealand)
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Discrimination of two species of grenadier (Gadiformes, Macrouridae), Macrourus whitsoni and M. caml, in the Ross Sea region of the Southern Ocean (CCAMLR Subareas 88.1 and 88.2) on the basis of otolith morphometrics
Abstract: Two species of grenadier are predominatly taken as bycatch in the Ross Sea region ... fish taken as bycatch in the Ross Sea on New Zealand fishing vessels in the 2011–12 fishing year were ... used to test whether the otoliths of the two species can be discriminated. Samples of both species of ... in the sample were 34.5–65.1 cm total length (TL), and 12.0–24.0 cm pre-anal length (PAL); lengths of ...
Meeting Document : WG-FSA-14/63 : Autor(es): M.H. Pinkerton, C. Ó Maolagáin, J. Forman and P. Marriott (New Zealand)
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Cruise report of multidisciplinary ecosystem survey in the eastern Indian sector of the Antarctic (CCAMLR Division 58.4.1) with a focus on Antarctic krill during 2018/19 season by the Japanese survey vessel, Kaiyo-maru
Abstract: A multidisciplinary ecosystem survey in the eastern Indian sector of the Antarctic ... (CCAMLR Division 58.4.1) with a focus on Antarctic krill was carried out by Kaiyo-maru during the 2018/19 ... season for 53 days. The survey consisted of 2 survey periods: Leg 1 (from 15 December 2018 to January ... ended at ice edge on 125°50.0’E. Two small scale oceanographic surveys (off the Mertz Glacier Tongue and ...
Meeting Document : WG-EMM-2019/42 : Autor(es): H. Murase, K. Abe, R. Matsukura, H. Sasaki, R. Driscoll, S. Driscoll, F. Schaafsma, M. van Regteren, Q. Yang, H. Ohshima, K. Ohshima, R. Sugioka, J. Tong, N. Yamamoto, H. Doiguchi, E. Briggs, K. Doi, D. Hirano, K. Katsumata, M. Kiuchi, Y. Ko, D. Nomura, M. Orui, H. Sato, S. Toyoda, K. Yamazaki, T. Ishihara, K. Hamabe, S. Kumagai, T. Miyashita, N. Yamada, Y. Koyama and H. Sasaki
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UPDATE OF THE INTEGRATED STOCK ASSESSMENT FOR THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS USING CATCH-AT-AGE DATA AND TWO YEARS OF SURVEY ABUNDANCE-AT-AGE DATA
to estimate the CV. There was no reduction in CV for either series if a score of 3 was assumed. The ... Abstract: The integrated assessment of Patagonian toothfish, Dissostichus eleginoides, for the ... commercial catches with catch-at-age proportions using age length keys (ALKs) where the ALK for each ... combination of fishery and year had available at least 50 aged fish. For the trawl fisheries that were divided ...
Meeting Document : WG-SAM-09/09 : Autor(es): S.G. Candy (Australia)
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A method for spreading the risk of localised effects of catches of Antarctic krill up to the trigger level, during the development of stage 2 of feedback management
Abstract: Conservation Measure 51-07 provides an interim distribution of the trigger level in the ... because the Commission, in the preambular paragraphs to that measure, recognised that localised catches up ... to the trigger level may affect krill predators. They wished to establish a spatial distribution of ... the trigger level that ensured that krill predators “ would not be inadvertently and ...
Meeting Document : WG-EMM-16/69 : Autor(es): A.J. Constable, S. Kawaguchi and M. Sumner
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Characteristics of oceanic structure in the waters around the South Shetland Islands of the Antarctic ocean between December 1990 and February 1991: outstanding coastal upwelling?
Abstract: The sixth Antarctic survey cruise of R/V Kaiyo Maru was carried out in waters around ... the Shouth Shetland Islands. where are known as the fishing grounds of krill, during the 1990-91 ... into operation In the same area after an interval of 40 days. The more characteristic change was ... clearly recognized in the waters of the insular shelf from the first leg to the second leg. The Antarctic ...
Meeting Document : WG-KRILL-92/24 : Autor(es): M. Naganobu, T. Katayama, T. Ichii, H. Ishii and K. Nasu (Japan)
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A model at the level of the foraging trip for the indirect effects of krill (Euphausia superba) fisheries on krill predators
Abstract: 1. Although the development of fisheries for krill in the southern oceans has prompted ... considerable work on the indirect effects of fisheries on krill predators, to date all work has focused on ... population level effects. Here, we present for. the first time a model at the level of the foraging trip for ... the effects of a fishery on krill predators, using the Adelie penguin (Pygoscelis adeliae) as a model ...
Meeting Document : WG-EMM-96/20 : Autor(es): Switzer, P.V., Mangel, M.
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Comparative studies on the biological and acoustical properties of krill aggregations (Euphausia superba Dana) samples during the XIII Italian Expedition to the Ross Sea (December 1997–January 1998)
Abstract: During the XIII Italian Expedition to the Ross Sea in late spring and early summer ... carried out. For all hauls both parameters: biological (length AT, sex and maturity stage of the gonads of ... the Euphausia superba) and acoustical (differences in volume back-scattering strength of krill ... aggregations MVBS at 38, 120 and 200 kHz) were examinated. Comparing the depth of the net and acoustic ...
Meeting Document : WG-EMM-00/39 : Autor(es): M. Azzali, J. Kalinoswki, G. Lanciani and I. Leonori (Italy)