Search results
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Large-scale oceanographic fluctuations drive Antarctic petrel survival and reproduction
climate variability. Using global climate indices that are known to impact the Southern Ocean ecosystem ... (the El Niño Southern Oscillation and Antarctic Oscillation Indices) we assessed their e cacy to ... predict variation in the demographic parameters of Antarctic seabirds. First, we used a long-term dataset ... alassoica antarctica, from the largest known breeding colony (Svarthamaren, Dronning Maud Land) and examined ...
Meeting Document : WG-EMM-16/P14 : Author(s): S. Descamps, A. Tarroux, S.-H. Lorentsen, O.P. Love, Ø. Varpe and N.G. Yoccoz
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Coastal weather drives foraging behaviour of chinstrap penguins, Pygoscelis antarctica
indicators because their performance is presumed to be linked to the overall function of the ecosystem that ... supports them. In the southwest Atlantic sector of the Southern Ocean, Antarctic krill (Euphausia superba ... the ecosystem in an adaptive framework for sustainably managing krill catch levels, performance ... potentially confounding sources of variability that might impact predator performance such as the effects of ...
Meeting Document : WG-EMM-18/P14 : Author(s): A.D. Lowther, P. Trathan, A. Tarroux, C. Lydersen and K.M. Kovacs
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Report on fish by-catch during exploratory fishing activities in Division 58.4.3a (Elan Bank) between 2008 and 2018
Abstract: We report on objective 2 “inform estimations of the distribution, relative abundance ... , and life history of the main bycatch species” of the suspended research plan on Patagonian toothfish ... analyzed bycatch composition in number and biomass during the period 2008-2018 to investigate the inter ... -annual variations in bycatch patterns, spatial distribution and biological parameters of the main bycatch ...
Meeting Document : WG-FSA-2019/56 : Author(s): C. Péron, C. Chazeau, N. Gasco and F. Massiot-Granier
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RESOURCES EVALUATION OF ANTARCTIC KRILL EUPHAUSIA SUPERBA DANA USING AREAL TRAWLING AND HYDRO-ACOUSTIC DATA
analyses procedures applied for trawling and hydro-acoustic sampling have to in compliance with the rules ... of statistical distribution and principles of metrology. Division of natural habitat of the Antarctic ... krill into regions is based on a principle of equal probability applied for congestions instead of the ... revealed. Standard measures for the population densities of krill in natural habitat are not available ...
Meeting Document : WG-SAM-08/P01 : Author(s): L.A. Kovalchuk (Ukraine)
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CCAMLR environmental protection measures
Abstract: Following Resolution 1 (2004) adopted at the Twenty-seventh Meeting of the ATCM, the ... Secretariat has prepared this paper to review all the environmental protection-related provisions of various ... CCAMLR Conservation Measures in force. The suggestion is made that there may be benefit in consolidating ... such provisions within a single measure insofar as they relate directly to the potential environmental ...
Meeting Document : CCAMLR-XXIII/33 : Author(s): Secretariat
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CCAMLR streamer line requirements revisited
Abstract: The streamer line has become the primary seabird mitigation device prescribed and used ... in most longline fisheries throughout the world, based to a large degree on the precedent set by ... CCAMLR in 1991. This discussion paper responds to the interest of the IMAF working group to consider ... possible revisions to the CCAMLR streamer line requirement. Existing literature on the effectiveness of ...
Meeting Document : WG-FSA-03/22 : Author(s): E.F. Melvin (USA)
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Transhipment implementation report
Abstract: The Secretariat receives notifications for transhipment activities within the ... Convention Area in accordance with Conservation Measure 10-09. The Secretariat maintains a list of all ... transhipment notifications on the password protected part of the website in accordance with CM 10-09 paragraph ... 5. This paper summarises the transhipment notifications received between 1 August 2018, and 31 July ...
Meeting Document : CCAMLR-38/BG/15 : Author(s): CCAMLR Secretariat
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SELECTIVITY OF CONVENTIONAL AND CONTINUOUS TECHNIQUES OF KRILL FISHERY
Abstract: Combination of conventional and continuous techniques during krill fishery at the ... Russian commercial vessel "Maxim Starostin" allowed to compare the size structure of the ... relation to the selectivity of fishing gears and the space-time variability of krill. Differences between ... connect with the trawls selectivity weren’t found. At the same time results of the analysis didn’t ...
Meeting Document : WG-EMM-11/14 : Author(s): D. Sologub (Russia)
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IN SITU MEASUREMENTS OF TILT ANGLE DISTRIBUTION AND TARGET STRENGTH IN ANTARCTIC KRILL (EUPHAUSIA SUPERBA)
Abstract: Knowledge of the scattering properties of Antarctic krill (Euphausia superba) is ... crucial for biomass estimates of the species, but in situ investigations regarding this are still very ... scarce. We conducted a field study in the Southern Ocean where one of the objectives was to acquire data ... on orientation angles and target strength of Antarctic krill. The main investigations were done off ...
Meeting Document : WG-EMM-08/29 : Author(s): G. Skaret, S.A. Iversen, T. Knutsen, R.J. Korneliussen, E. Ona, R. Pedersen, A. Totland, T. Torkelsen (Norway) and X. Zhao (China)
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Revised selectivities for Dissostichus eleginoides taken by longliners in Subarea 48.3
selectivity curves for toothfish taken by longliners around South Georgia and Shag Rocks over the period 1995 ... selectivities for the years 1995 – 2000 for input to the GYM assessment. In this paper, I propose a revised ... method for estimating the selectivities based on an assumption that the proportions of the total CPUE in ... . This removes some of the ad hoc nature of the former estimation method. The method is illustrated by ...
Meeting Document : WG-FSA-02/64 : Author(s): G.P. Kirkwood (United Kingdom)