Search results
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A GIS tool to assist in the planning and design of sample surveys of the abundance of colonial breeding species
Abstract: A GIS tool to assist in the planning and designing of surveys of colonial breeding ... developed to implement more complex and efficient designs. An example of its potential use is provided. In ... the example the tool is used to sample a population of Adelie penguins in the Holme Bay region of East ... Antarctica as might occur in a real a pilot survey, and the resulting sample densities used to predict the ...
Meeting Document : WG-EMM-05/25 : Author(s): C. Southwell, R. Dreissen, S. Candy, G. McPherson and J. Clarke (Australia)
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Beached birds: a guide used by north pacific groundfish observers to identify seabirds incidentally caught in fisheries
Abstract: In the fall of 2002, the U.S. National Marine Fisheries Service (NMFS) purchased 300 ... vessels in the Bering Sea and Gulf of Alaska. This new guide replaces a dichotomous key on looseleaf paper ... of fishery observers to accurately identify seabirds as they come up in the sampled fishing gear ... collection at the NMFS North Pacific Groundfish Observer Program. A copy of Beached Birds is available in the ...
Meeting Document : WG-FSA-03/24 : Author(s): T. Hass and S. Davis (USA)
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Connectivity and population structure in Pleuragramma antarcticum
silverfish (Pleuragramma antarcticum) are distributed in independent, discrete populations in the Ross Sea ... populations: i) in the Ross Sea, ii) on the southern Antarctic Peninsula in Marguerite Bay and off Charcot ... (USA) and M. Pinkerton (New Zealand) Title: Connectivity and population structure in Pleuragramma ...
Meeting Document : WG-FSA-11/19 : Author(s): J. Ferguson, J. Ashford, A. Piñones, J. Torres, W. Fraser, C. Jones (USA) and M. Pinkerton (New Zealand)
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On the accuracy of the pellet analysis method to estimate the food intake in the Antarctic shag Phalacrocorax bransfieldensis
through the gastrointestinal tract of the otoliths of fish represented in pellets of the Antarctic Shag ... slightly decreased in February. These estimations, in general, are in line with those previously obtained ... of the pellet analysis method to estimate the food intake in the Antarctic shag Phalacrocorax ...
Meeting Document : WG-EMM-97/61 : Author(s): Casaux, R.
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Variants of the ASPM assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity which attempt to reconcile CPUE and catch-at-length data
examined. One allows for the possibility of changes in somatic growth rate in response to increased food ... in somatic growth rate as abundance drops. For the recruitment variability model, results remain ... highly sensitive to the relative weights given to CPUE and catch-at-length data in the model fitting ... the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity which attempt ...
Meeting Document : WG-FSA-SAM-04/12 : Author(s): Brandão, A., Butterworth, D.S.
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Abundance and reproductive distribution of Pygoscelids sp. in the northern area of Danco Coast, Antarctic Peninsula
potential to act as ecological indicators. The western Antarctic Peninsula is one of the three sites in the ... penguin (Pygoscelis papua) in the northern sector of the Danco Coast, north-west of the Antarctic ... Peninsula during the breeding season 2010-2011. Our results showed an overall increase in both populations ... in relation the 1998. Since the effects of climate change and human harvesting could confound ...
Meeting Document : WG-EMM-12/58 : Author(s): M.M. Santos, E.F. Rombolá, D. González-Zevallos, M.A. Juáres, J. Negrete and N.R. Coria (Argentina)
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Some aspects of the relation between Antarctic krill abundance and CPUE measures in the Japanese krill fishery
Paper Title: Some aspects of the relation between Antarctic krill abundance and CPUE measures in ... limitations on the vessels, and product quality considerations- in particular the increasing tendency to avoid ... catching “green” krill. These factors result in Catch-per-Day and Catch-per-Haul measures being unlikely to ... -swarm density. Search time data may be needed to assess the density of swarms in a concentration, but ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 109–125 : Author(s): Butterworth, D.S.
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REPORT ON THE ABANDONED GILLNET RETRIEVAL OPERATION CONDUCTED BY AUSTRALIA IN CCAMLR STATISTICAL DIVISION 58.4.3B (BANZARE BANK)
gillnets as a fishing method to target toothfish in the Convention area. Estimating the impact of IUU ... . Based on the amount of toothfish found in the 8 km long section of net retrieved, upwards of 29 tonnes ... gillnets. However these figures are likely to be underestimates of total mortality in gillnets, due to the ... evidence of large numbers of sea-lice depredated fish in the net. Author(s): Snowdon, D., Hamill, J ...
Meeting Document : TASO-09/10 : Author(s): Snowdon, D., Hamill, J., McEachan, F., Welsford, D.
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Conditions for the precise measurement of fish target strength in situ
Abstract: Conditions for precise measurement of in situ fish target strength (TS) are empirically ... studied and two indexes are introduced for this purpose. One is the number of fish in the effective ... obtained from one large same fish school in the eastern shelf of Bering sea during the intership ... calibration between Japanese and U.S. vessels on 15 and 16 August 1991. Published in J.Mar.Acoust.Soc. Author ...
Meeting Document : WG-Krill-94/35 : Author(s): K. Sawada and M. Furusawa (Japan), N.J. Williamson (USA)
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Rockhopper penguins and other marine life threatened by driftnet fisheries in the south Atlantic ocean
-target species in the Pacific Ocean, has extended its range to include the South Atlantic Ocean ... . Relatively little is known about the areas of operation and impacts of driftnetting in the South Atlantic as ... . This paper reviews the impact of the driftnet fishery on non-target species in the central South ... , apparently resulting in considerable mortality of rockhopper penguins (Eudyptes chrysocome) and other marine ...
Meeting Document : CCAMLR-IX/BG/05 : Author(s): Delegation of South Africa