Search results
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Target strength of Antarctic krill
Abstract: In-situ measurements of individual krill target strength are presented (modal value ... reproductively mature and averaged 47.44mm in length. Results agree well with recent predictions of acoustic ... target strength based on extrapolations of other field experiments using the bent cylinder model of sound ... scattering by elongated zooplankters. The modal value of the measurements is 6.7dB lower than that predicted ...
Meeting Document : WG-KRILL-91/13 : Author(s): R.P. Hewitt and D.A. Demer (USA)
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Ingestion of anthropogenic articles by seabirds at Macquarie Island
regurgitations and the stomachs of seabirds at Macquarie Island; these were ingested both at sea and on land ... . Eight percent of regurgitated casts from Macquarie Island Cormorants contained polystyrene beads ... . Plastic particles were recorded from the stomachs of Southern Giant Petrels, Subantarctic Skuas, and Kelp ... Gulls. Birds examined in 1988 had a higher frequency of occurrence of foreign objects than birds ...
Meeting Document : CCAMLR-VIII/BG/12 : Author(s): D.J. Slip, K. Green and E. Woehler (Australia)
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plotImage – software for producing augmented image plots of spatially referenced data
Abstract: Software is presented for the automated production of standardised image plots of ... spatially referenced data. While developed to satisfy the specific requirements of WG-FSA, the routines have ... been developed to be as generic as possible and may be useful for displaying a wide range of data. This ... Working Groups for the display of spatially referenced data. Author(s): J.P. McKinlay (Australia) Title ...
Meeting Document : WG-SAM-10/22 : Author(s): J.P. McKinlay (Australia)
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Proposal to amend Conservation Measure 10-05 to better achieve its objective taking into account different legal frameworks of the Contracting Parties
Abstract: The Republic of Korea proposes to amend CCAMLR Conservation Measure 10-05 to better ... frameworks in implementing relevant provision of the Measure. If adopted, the revised CM is expected to ... suspicion of being illegally caught but cannot be immediately seized or confiscated due to its domestic ... legal frameworks. Author(s): Delegation of the Republic of Korea Title: Proposal to amend ...
Meeting Document : CCAMLR-38/27 : Author(s): Delegation of the Republic of Korea
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Statistical modelling of by-catch patterns: a preliminary case study using research fisheries in Subarea 48.6
Abstract: We report a preliminary result of statistical modeling of grenadier bycatch pattern by ... zero-inflation. The result contains several issues including the failure of estimation in considerable ... number of candidate models, overdispersion and insufficient prediction of zero-catch, suggesting that ... further improvement is required. Author(s): K. Sawada and T. Okuda Title: Statistical modelling of by ...
Meeting Document : WG-SAM-2019/09 : Author(s): K. Sawada and T. Okuda
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Proposed revision to the estimation of fisheries footprints
Abstract: A revised approach to the estimation of longline fisheries footprints is presented. The ... method uses a data-derived estimate of the uncertainty around the locations of longlines to define a ... grid. The proportion of the area of each grid cell that is covered by buffered lines is then used as a ... footprint index. Author(s): CCAMLR Secretariat Title: Proposed revision to the estimation of fisheries ...
Meeting Document : WG-FSA-2019/67 : Author(s): CCAMLR Secretariat
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ANTARCTIC KRILL DEMOGRAPHY AND POPULATION DYNAMICS WEST OF THE ANTARCTIC PENINSULA IN 2010/11
Abstract: A krill net sampling survey was carried out west of the Antarctic Peninsula in January ... Elephant Island and the western entrance of Bransfield Strait, the “Polarstern” survey grid followed back ... , Salpa thompsoni. The results of this survey represent the most complete picture of the spatial ... distribution of krill abundance, demography, and production on the western side of the Antarctic Peninsula ...
Meeting Document : WG-EMM-11/13 : Author(s): V. Siegel (Germany), C. Reiss (USA), K. Dietrich (USA), M. Haraldsson (Sweden) and G. Rohardt (Germany)
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The direct impact of fishing and fishery-related activities on marine life in the CCAMLR Convention Area with particular emphasis on longline fishing and its impact on albatrosses and petrels – a review
Iles Kerguelen. The fishery extended further south for a few years in the second half of the 1970' ... until 1996/97 when the longline fisheries for Dissostichus eleginoides spread over most of the Southern ... Ocean within one season. A number of direct effects from fishing activities can be seen on marine life ... , in particular birds and mammals. With the exception of plastic package bands on some sub-Antarctic ...
Meeting Document : SC-CAMLR-XIX/BG/11 : Author(s): Delegation of Germany
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Studies on zooplankton with special reference to krill from the Indian Ocean sector of the Southern Ocean
Abstract: Distribution, abundance and species composition of zooplankton collected during the ... of zooplankton community and the population density ranged fiom 650 to 7209/100 m-3 of zooplankton ... catch. Swarms of krill and salps were observed during the study period (austral summer) which were the ... prime cause for high standing stock of zooplankton. The prevailing physical parameters could be the ...
Meeting Document : WG-EMM-98/35 : Author(s): K.L. Bhat, R. Vijayakumar and V. Jaya Sree (India)
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Target strength of mackerel icefish (Champsocephalus gunnari) from a scattering model
backscattered target strength (TS) of six mackerel icefish (Champsocephalus gunnari) of total length 26.8–35.0 ... cm, at 38 kHz. The model used computed tomography (CT) scans of fish to determine the sound speed and ... density throughout the fish and simulated the complex interaction of the incident sound wave with the ... applicable to fish of length 26–35 cm. Existing in situ TS estimates are for smaller fish (16–26 cm) and ...
Meeting Document : SG-ASAM-09/06 : Author(s): G. Macaulay (New Zealand)