Résultats de la recherche
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Uncertainty in echosounder calibrations
Abstract: Calibration of echo sounders for fish stock assessment are commonly performed using the ... standard sphere method (Johannesson and Mitson, 1983; Simmonds et al., 1984). To determine the accuracy of ... the method, direct measurements of target strength (TS) were made of three standard spheres (Copper ... (Cu)- 23.0 mm and tungsten carbide (WC)- 33.0 mm and 38.1 mm). At the best case range of 5 m, the TS ...
Meeting Document : WG-EMM-96/40 : Auteur(s): Soule, M.A., Demer, D.A.
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Responding to climate change: Adélie penguins confront astronomical and ocean boundaries
Abstract: Long-distance migration enables many organisms to take advantage of lucrative breeding ... latitudes for the remainder of the year. The latitudinal range of the Adélie penguin spans ~22o. Penguins ... from northern colonies may not migrate, but due to the high latitude of Ross Island colonies, these ... that Adélies require both pack ice and some ambient light at all times of year. Over a 3-yr period ...
Meeting Document : WG-EMM-10/P11 : Auteur(s): G. Ballard, V. Toniolo, D.G. Ainley, C.L. Parkinson, K.R. Arrigo and P.N. Trathan
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Conservation
2.3.1 Extent to which CCAMLR has taken into account the effects of harvesting, research ... , conservation and associated activities on the marine ecosystem, the known or potential effects of environmental ... changes in its management of Antarctic marine living resources, and the risks and effects of the ... introduction of alien species Recommendation Responsible body Activities to date Status 2.3.1.1 The RP ...
Page : Site Section: The Organisation
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Interannual variability in Antarctic krill (Euphausia superba) density at South Georgia, Southern Ocean: 1997 – 2013
Abstract: This paper, now in press in ICES Journal of Marine Science, presents krill density ... the paper, we present an additional table (Table 0) which takes the values of krill density from the ... estimates for a 17 year time series of acoustic surveys of the Western Core Box at South Georgia. Krill ... Approximation (SDWBA) target strength model. Krill density ranged over several orders of magnitude (0 to 10 000 ...
Meeting Document : WG-EMM-14/P04 : Auteur(s): S. Fielding, J. Watkins, P. Trathan et al.
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Draft proposal for multi-Member research on the Dissostichus mawsoni exploratory fishery in East Antarctica (Divisions 58.4.1 and 58.4.2) from 2018/19 to 2021/22
research progress including evaluation of standard approaches to identify precautionary catch limits (WG ... for this fishery. Furthermore, examination of bycatch data and underwater video footage have not led ... to the identification of vulnerable marine ecosystem (VME) indicator species (Maschette et al. 2017 ... succeeding plan has been designed as a 4-year plan, based on the low risk profile of this fishery and to ...
Meeting Document : WG-SAM-18/17 : Auteur(s): Delegations of Australia, France, Japan, Republic of Korea and Spain
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Marine debris, entanglements and hydrocarbon soiling at Bird Island and King Edward Point, South Georgia, Signy Island, South Orkneys and Goudier Island, Antarctic Peninsula 2018/19
to March 2019. Surveys of beached marine debris at Bird Island recorded a total of 141 items during ... items of beached debris were recorded at Signy Island (operational during summer only; 14 November 2018 ... to 4 March 2019). Fifteen items of beached marine debris were recovered from Goudier Island ... (operational 10 November 2018 to 8 March 2019). Entanglements of three Antarctic fur seals (Arctocephalus ...
Meeting Document : SC-CAMLR-38/BG/28 : Auteur(s): Delegation of the United Kingdom
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Preliminary analysis on the Kerguelen shelf icefish Champsocephalus gunnari stock from 1996/97 to 2001/02: no evidence in the recovery!
season when 3889 tonnes of Champsocephalus gunnari were landed (see CCAMLR statistical bulletins) because ... yields were not enough high and the lucrative fishery of Patagonian toothfish Dissostichus eleginoides ... the fishery licences for trawlers have been linked to the obligation of conducting some experimental ... cruises in the traditionnal area of fish aggregations. Such cruises occur regularly with two trawlers from ...
Meeting Document : WG-FSA-02/65 : Auteur(s): G. Duhamel and J. Claudet (France)
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PROPOSITION DE MESURE DE CONSERVATION GENERALE POUR LA MISE EN OEUVRE D'AIRES MARINES PROTEGEES DANS LA ZONE DE LA CCAMLR D'ICI A 2012, ET DISPOSITIONS NECESSAIRES EN MATIERE DE GESTION DANS LES MESURES DE CONSERVATION QUI GOUVERNERONT LES AMP A L'AVENIR
measure to implement a Representative System of Antarctic Marine Protected Areas (RSAMPA) in CCAMLR by ... the future ’ (CCAMLR-XXIX/38 Rev. 1). This proposal is a revision of that presented to CCAMLR XXIX and ... provide the framework of common actions and requirements for the declaration, administration and ... management of CCAMLR marine protected areas (MPAs). Paragraph 1 of the draft general measure, which outlines ...
Meeting Document : CCAMLR-XXX/30 : Auteur(s): Delegation of Australia
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BEACH DEBRIS SURVEY – MAIN BAY, BIRD ISLAND, SOUTH GEORGIA 2006/2007
Abstract: During the seventeenth year of standardised beach surveys of man-made debris at Bird ... Island, South Georgia (covering the period 1 October 2006 to 30 September 2007) a total of 365 items were ... collected. This represents a reduction by 33% on the 544 items recorded in 2005/06 and a decrease in mass of ... 1.72 kg (32%). The distribution of debris between the summer and winter was similar to the five ...
Meeting Document : WG-FSA-08/24 : Auteur(s): F. Le Bouard (UK)
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Interactions between cetaceans and long-lining operations for Patagonian toothfish Dissostichus eleginoides around South Georgia
twenty-five of these. During setting of lines neither mortalities nor interactions were recorded. All ... )were present during one haul, from which 11 intact fish were taken aboard, compared to a mean of 510 ... operations and may have been removing fish captured on the lines. Numbers of sperm whales varied with ... location; some whales with identifying masks were observed over successive lines to the south-west of South ...
Meeting Document : WG-IMALF-94/16 : Auteur(s): J.R. Ashford (United Kingdom) and P.S. Rubilar (Chile)