Resultados de la búsqueda
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Krill aggregation characteristics: spatial distribution patterns from hydroacoustic observations. Polar Biology (in press)
Abstract: The distributional features and physical characteristics of some 1500 krill (Euphausia ... superba Dana) aggregations detected and sized acoustically in the south-west Indian Ocean are described ... . The aggregations were on average considerably smaller than elsewhere in the Antarctic. Aggregation ... biomass was log-normally distributed with a mean of 0.18 t. Only 3% of the aggregations were heavier than ...
Meeting Document : WS-KCPUE-89/11 : Autor(es): D.G.M. Miller and I. Hampton (South Africa)
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Stock structure of Antarctic toothfish in Statistical Area 88 and implications for assessment and management
Abstract: We review the stock structure of Antarctic toothfish in Statistical Area 88 with the ... aim of characterising the likely stock boundaries relative to stock assessments. We include ... , growth dynamics, and egg and larval dispersal simulations. Taken together, the information suggests two ... Sea Region stock. The Amundsen Sea stock likely includes juveniles and adults along the continental ...
Meeting Document : WG-SAM-14/26 : Autor(es): S.J. Parker, S.M. Hanchet and P.L. Horn (New Zealand)
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Scientific observations in CCAMLR fisheries – past, present and future
Abstract: The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) has ... the primary competency for managing fishing south of the Antarctic Polar Front. Despite a relatively ... are difficult and expensive to conduct. In addition, the size of the Convention Area, its remoteness ... and prevailing inclement weather have complicated matters. Therefore, in addition to the standard ...
Meeting Document : WG-FSA-04/64 : Autor(es): Secretariat
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BEACH DEBRIS SURVEY SIGNY ISLAND, SOUTH ORKNEY ISLANDS 1996/97
Abstract: The seventh annual beach debris survey was carried out at Signy Island, South Orkney ... Islands during the 1996/97 austral summer. Debris was cleared each month between December and March from ... three study beaches, Cummings Cove, Foca Cove and Starfish Cove. The debris was counted, measured and ... were found at Starfish Cove. The total amount of marine debris collected from the three beaches was the ...
Meeting Document : CCAMLR-XVI/BG/6 : Autor(es): Delegation of the United Kingdom
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Antarctic krill and climate change
on the impact of climate change and increasing fisheries on Antarctic krill and Antarctic ecosystems ... , and possible repercussions for resource management. The workshop was organised by the Institute of ... Marine Resources and Ecosystem Studies (IMARES) in the Netherlands, and funded by the European Commission ... and the Dutch government. The scientific evaluation focused on major agents of climate change, such as ...
Meeting Document : SC-CAMLR-XXX/BG/03 : Autor(es): Delegation of the European Union
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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 : Autor(es): 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 : Autor(es): 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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Results of reading tests of TOP otolith sections and time schedule of reading for Dissostichus otoliths caught in regions of data-poor fisheries
Abstract: The correct age-length keys are essential for the stock assessment of Dissostichus spp ... . by CASAL model. However, the age estimations using the otoliths have been scarcely progressed in ... regions of data-poor fisheries. Therefore the analysis is an urgent task. We have made five reading tests ... using images of thin-sectioned TOP otoliths in December 2012 and May 2013. The coefficient of variation ...
Meeting Document : WG-SAM-13/19 : Autor(es): K. Taki and T. Ichii (Japan)
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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 : Autor(es): P.N. Trathan (United Kingdom), J.T. Hinke (USA) and B. Lascelles (BirdLife International)
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WG-FSA-18
-XXXVI/20 The Ross Sea region Marine Protected Area Research and Monitoring Plan A. Dunn, M. Vacchi and G ... . Watters (Co-conveners) SC-CAMLR-XXXVII/01 Report of the Co-conveners of the CCAMLR Workshop for the ... of the CCAMLR Independent Stock Assessment Review for Toothfish (Norwich, United Kingdom, 18 to 22 ... June 2018) WG-FSA-18/01 Analyses of ice conditions in the research area proposed by Ukraine for a multi ...
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