Search results
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Uncertainty in standard sphere calibrations
Abstract: In fisheries acoustics, the standard sphere method of echosounder calibration is most ... commonly used (Johannesson and Mitson, 1983; Simmonds et al., 1984). To investigate the uncertainty in the ... variations in the system gains of 0.3, 0.2 and 1.5 dB, respectively. Additionally, system gain values ... calibrated with the 30.5 mm Cu sphere were consistently lower than those with the 33.2 mm WC sphere. Prompted ...
Meeting Document : WG-EMM-95/70 : Author(s): Demer, D.A., Hewitt, R.P.
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Importance of myctophid fish distributions for formation of foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island
to the incubation and guard period, respectively, for chinstrap penguins; penguins were divided into ... occurred on the shelf north of Seal Island. However, all predators except diurnal foraging penguins went ... northward beyond the shelf, and foraged in offshore region during Leg I and on slope during Leg II. The ... diurnal foraging penguins alone fed on the shelf. The following advantages are considered for feeding in ...
Meeting Document : WG-EMM-95/87 : Author(s): Bengtson, J.L., Kawaguchi, S., Jansen, J.K., Takao, T., Meyer, W.R., Baba, N., Hiruki, L.M., Boveng, P., Cameron, M.F., Ogishima, T., Ichii, T., Naganobu, M.
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Scotia Sea Pygoscelid Penguin Tracking and Habitat Analysis Workshop
predators and the krill fishery was desirable throughout the Scotia Sea; it was recognised that such work ... environmental variables. Consequently, in May 2015, an expert meeting was convened to consider the utility of ... using tracking data to build habitat use and preference models for krill-eating penguins. The meeting ... considered that such models would be of critical value in the development of feedback management approaches ...
Meeting Document : WG-EMM-15/09 : Author(s): P.N. Trathan (United Kingdom), J.T. Hinke (USA) and B. Lascelles (BirdLife International)
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Adélie penguin foraging behaviour and breeding success in seasons of contrasting krill availability (Mawson Coast, Antarctica)
Abstract: Parameters measured under the CCAMLR Ecosystem Monitoring Program (CEMP) for Adélie ... penguins at the Béchervaise Island CEMP site were compared between seasons of contrasting krill ... availability. Krill biomass estimates were derived from shipboard surveys carried out within the penguins ... ’ normal foraging range during the 2001 and 2003 breeding seasons. More than three times as much krill was ...
Meeting Document : WG-EMM-03/44 : Author(s): J. Clarke, M. Tierney, S. Candy, S. Nicol, L. Irvine and K. Kerry (Australia)
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Interannual variations of water thermochaline structure on South Georgia Island, South Orkney Islands and Shetland Islands shelves
Abstract: Basing on the analysis of major water mass boundaries and their thermochaline ... characteristics, T,S diagrams' typification has been realized for hydrological stations carried out in the ... been singled out for the area of South Orkney Isls. The first type was characterized by presence of ... intermediate cold layer. In some years of this type (1 97 1, 1972, 1978, 1982) the layer had positive ...
Meeting Document : WG-EMM-00/34 : Author(s): P. Chernyshkov, V. Shnar, O. Berezhinsky and I. Polischuk (Russia)
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FIELD IDENTIFICATION GUIDE TO HEARD ISLAND AND MCDONALD ISLANDS (HIMI) BENTHIC INVERTEBRATES: A GUIDE FOR SCIENTIFIC OBSERVERS ABOARD FISHING VESSELS
Abstract: At CCAMLR-XXVI the Working Group on Fish Stock Assessment (WG-FSA) noted a lack of ... specific reference material for the identification of benthic invertebrates in areas specific to which ... observers carry out their activities (SC-CAMLR-XXVI: Annex 5, paragraph 6.32). To improve the standard of ... observer identifications and also to assist in the identification of vulnerable areas, the Scientific ...
Meeting Document : SC-CAMLR-XXVIII/BG/12 : Author(s): Delegation of Australia
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Algunos aspectos biologicos relevantes a la explotacion de la merluza negra (Dissostichus eleginoides Smitt, 1898) en la zona economica exclusiva argentina y sector oceanico adyacente
Abstract: This work aims to the study of the distribution, size structure by depth, first ... eleginoides) in the Argentine Sea, and atempts some explanation by a trophic analysis of such distribution ... . The distribution of Patagonian toothfish extends between of 36°30'S and 55°S from 80 to 2500 m ... depth. Greatest concentration areas were found south and NE of the Malvinas Islands, over the slope of ...
Meeting Document : WG-FSA-97/49 : Author(s): Almeyda, S.M., Prenski, L.B.
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Temporal variability in Adélie penguin CEMP parameters and their response to changes in prey availability
Abstract: We examined the within- and between- year fluctuations of four Adélie penguin ... the duration of early and late stage foraging trips. For example, low breeding success was recorded in ... a season with long foraging trips during the guard period, relatively short trips during the crèche ... period and heavy fledglings. These results may indicate changes in the relative level of resource ...
Meeting Document : WG-EMM-12/22 : Author(s): L. Emmerson and C. Southwell (Australia)
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Temporal variability in Adélie penguin CEMP parameters and their response to changes in prey availability
Abstract: We examined the within- and between- year fluctuations of four Adélie penguin ... the duration of early and late stage foraging trips. For example, low breeding success was recorded in ... a season with long foraging trips during the guard period, relatively short trips during the crèche ... period and heavy fledglings. These results may indicate changes in the relative level of resource ...
Meeting Document : WG-EMM-12/48 : Author(s): L. Emmerson and C. Southwell (Australia)
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2015-16 Research plan in Division 58.4.4 for Dissostichus spp.
Abstract: Regarding the low levels of stocks of Dissostichus spp. and the high levels of IUU ... fishing, CCAMLR decided to close the fishery in 2002 in division 58.4.4. Since 2008 only one vessel ... 24-01. In 2014, WG-FSA agreed research fishing conducted in the research blocks C and D by two ... vessels using longlines: Shinsei Maru No. 3 (Japan) and the Saint André (France). For the season 2014/15 ...
Meeting Document : WG-SAM-15/52 : Author(s): Delegation of France