Resultados de la búsqueda

1. Population change in gentoo penguins Pygoscelis papua at South Georgia: potential roles of adult survival, recruitment and deferred breeding

   survival and recruitment rates, to model the fluctuations in breeding populations, taking account of ... variations introduced by good and bad years (as classified on the basis of breeding success). There is ... major population changes (large decreases followed by substantial increases) occurred. Three of these ... years were associated with reduced availability of krill, one with very cold winter and spring ...

   Meeting Document : WG-CEMP-93/08 : Autor(es): J.P. Croxall and P. Rothery (United Kingdom)

2. Apparent decrease of Weddell seal numbers in the western Ross Sea

   Edisto-Moubray as well. The timing of decline, or perhaps spreading (low numbers of seals in more places ... . We analyzed both historic and satellite-derived ice data but found only an expansion of pack ice in ... the larger region and a thinning of fast ice along Victoria Land (conceivably beneficial to seals ... ). Timing of freeze and breakup of the fast ice remains the same. The only other major change to the Ross ...

   Meeting Document : WG-EMM-14/44 : Autor(es): D.G. Ainley, M.A. Larue (USA), I. Stirling (Canada), S. Stammerjohn and D.B. Siniff (USA)

3. On the use of baited remote underwater video to study Antarctic toothfish distribution under the sea-ice: from data collection to processing

   preliminary. The aim of the paper is to disseminate to the Members the methodology that we have used. Once ... spreadtime series of data to study the Antarctic toothfish, it is limited to areas where commercial fishing ... is permitted either by management or vessel operational constraints. The use of Baited Remote ... and Italy, from 2015 to 2018 a series of BRUV samplings have been carried out from the fast ice of ...

   Meeting Document : WG-EMM-2019/50 : Autor(es): D. Di Blasi, S. Canese, E. Carlig, L. Ghigliotti, S.J. Parker and M. Vacchi

4. Short note: time series of Drake Passage Oscillation Index (DPOI) from 1952 to 1988

   hypothesized environmental factors; strength of westerly winds (westerlies) determined from sea-level pressure ... series of DPOI using historical data. We searched the historical data and found the time series since the ... 1950s until 1988 at the Web sites of the Carbon Dioxide Information Analysis Centre for Rio Gallegos and ... of DPOI from 1952 to 1988 at this stage. Time series since 1988 will be soon calculated after ...

   Meeting Document : WG-EMM-02/44 : Autor(es): M. Naganobu and K. Kutsuwada (Japan)

5. IN SITU MEASUREMENTS OF TILT ANGLE DISTRIBUTION AND TARGET STRENGTH IN ANTARCTIC KRILL (EUPHAUSIA SUPERBA)

   Abstract:  Knowledge of the scattering properties of Antarctic krill (Euphausia superba) is ... crucial for biomass estimates of the species, but in situ investigations regarding this are still very ... scarce. We conducted a field study in the Southern Ocean where one of the objectives was to acquire data ... on orientation angles and target strength of Antarctic krill. The main investigations were done off ...

   Meeting Document : WG-EMM-08/29 : Autor(es): G. Skaret, S.A. Iversen, T. Knutsen, R.J. Korneliussen, E. Ona, R. Pedersen, A. Totland, T. Torkelsen (Norway) and X. Zhao (China)

6. PROPOSAL FOR REVISING CONSERVATION MEASURE 21-03 (2007) NOTIFICATION OF INTENT TO PARTICIPATE IN A FISHERY FOR EUPHAUSIA SUPERBA

   Abstract:  The amount of notified catch of krill fisheries is increasing above the trigger level ... revision of Conservation Measure 21-03 (2007) Notification of intent to participate in a fishery for ... Euphausia superb. Author(s):  Delegation of Japan Title:  PROPOSAL FOR REVISING CONSERVATION MEASURE 21-03 ... (2007) NOTIFICATION OF INTENT TO PARTICIPATE IN A FISHERY FOR EUPHAUSIA SUPERBA Approval:  Approved ...

   Meeting Document : SCIC-08/04 : Autor(es): Delegation of Japan

7. Foraging energetics of Antarctic fur seals in relation to changes in prey availability

   Abstract:  This research examines the energy budget of breeding female Antarctic fur seals, both ... when food was plentiful and when it was scarce. The energy expenditure and change in body mass of ... . Krill, the nearly exclusive prey of breeding females, were very scarce in 1984 at South Georgia. Fur ... parturition in 1984, and both pup mortality and the proportion of pups that died from starvation were double ...

   Meeting Document : SC-CAMLR-VIII/BG/13 : Autor(es): Delegation of United Kingdom

8. Evaluation of the krill stock in Subarea 48.3, June–August 1995

   Abstract:  On the ground of trawling of Ukrainian vessels made near the South Georgia from 16 June ... till 15 August 1995 peculiarities of krill distribution, their characteristics including time stability ... (tolerance), are examined, calculations of biomass and krill commercial concentrations values are given ... . Interannual changes in some indices of krill fishing Resources in this subarea from 1985 till 1995 undergo ...

   Meeting Document : WG-EMM-96/70 : Autor(es): Bibik, V.A.

9. Draft: differences in the foraging strategies of male and female Adelie penguins

   of breeding Adelie penguins were demonstrated at two widely separated locations over a number of ... frequently and consumed larger quantities of krill, especially when chicks were small. Males tended instead ... on fish throughout chick rearing. The importance of these results to monitoring programs such as the ... CCAMLR Ecosystem Monitoring Program (CEMP), their relevance to the energetics of reproduction and their ...

   Meeting Document : WG-EMM-95/46 : Autor(es): Franchi, E., Kerry, K., Clarke, J.

10. A method for preparing large numbers of otolith sections for viewing by scanning electron microscope

    Abstract:  In an investigation of the age structure of a population of Notothenia coriiceps ... Richardson at the South Orkney Islands, Antarctica, the microstructure of otoliths was examined. Progress is ... reported on a method used for processing large numbers of otoliths using a scanning electron microscope ... facilitate present methods of ageing fish populations, especially for fishery work in the Antarctic where ...

    Meeting Document : WG-FSA-93/07 : Autor(es): J.R. Ashford, K. Robinson and M.G. White (United Kingdom)

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