Результаты поиска

1. Effects of variability in prey abundance on reproduction and foraging in chinstrap penguins (Pygoscelis antarctica)

   contend with large interannual fluctuations in prey availability and hence the cost of chick provisioning ... abundance of Antarctic krill Euphausia superba in the vicinity of Seal Island, South Shetland Islands, 1990 ... offspring provisioning, the most energetically costly component of seabird parental care, adults need to ... somewhere along the continuum between maintaining constant investment in foraging effort between years and ...

   Meeting Document : WG-EMM-06/P6 : Автор(ы): D.A. Croll, D.A. Demer, R.P. Hewitt, J.K. Jansen, M.E. Goebel and B.R. Tershy (USA)

2. Operation results of Ukrainian vessels at Antarctic krill fishery in Subareas 48.2 and 48.3 in March-June 1994. Krill size composition

   , YugNIRO scientist is on board the latter one. The fishery and scientific information given in this paper ... is based on operative data. That is why some correction of these data is possible after the ... results of Ukrainian vessels at Antarctic krill fishery in Subareas 48.2 and 48.3 in March-June 1994 ... Abstract:  In 1993 Ukraine has recommenced krill fishing which was terminated in 1993. It is ...

   Meeting Document : WG-Krill-94/33 : Автор(ы): V.A. Bibik and V.N. Yakovlev (Ukraine)

3. Revised research program of Ukraine in Subarea 48.1 in 2018

   longline in the eastern part of Subarea 48.1. Author(s):  Delegation of Ukraine Title:  Revised research ... program of Ukraine in Subarea 48.1 in 2018 Approval:  Approved Secretariat Workflow Status:  Content ... Abstract:  Ukraine proposes to carry out a scientific survey of Dissostichus spp. by bottom ...

   Meeting Document : WG-FSA-17/32 : Автор(ы): Delegation of Ukraine

4. Sighting of marine debris during aerial marine mammal surveys conducted in Antarctic waters in austral summer 2010/11

   mammal surveys from helicopters west of the Antarctic Peninsula. Author(s):  L.S. Lehnert, K.-H. Kock and ... Abstract:  This report briefly describes observation of floating marine debris made during marine ... U. Siebert (Germany) Title:  Sighting of marine debris during aerial marine mammal surveys conducted ... in Antarctic waters in austral summer 2010/11 Approval:  Approved ...

   Meeting Document : WG-IMAF-11/12 : Автор(ы): L.S. Lehnert, K.-H. Kock and U. Siebert (Germany)

5. FLYING SEABIRDS IN AREA 48; A REVIEW OF POPULATION ESTIMATES, COVERAGE AND POTENTIAL GAPS IN SURVEY EXTENT AND METHODS

   between species across their breeding ranges in Area 48. Most population estimates reviewed date from the ... IN AREA 48; A REVIEW OF POPULATION ESTIMATES, COVERAGE AND POTENTIAL GAPS IN SURVEY EXTENT AND ... Abstract:  Published accounts of population surveys and population estimates for flying seabirds ... across Area 48 are reviewed. Spatial coverage of count data and population estimates varies greatly ...

   Meeting Document : WG-EMM-PSW-08/10 : Автор(ы): D. Wilson (Australia)

6. Modelling growth and reproduction of Antarctic krill: implications of spatial and temporal trends in temperature and food for ecosystem-based management of krill fisheries

   Abstract:  Errors in the growth model used in stock assessments of Antarctic krill, specifically ... higher rates of growth than occur in reality, could inadvertantly lead to over-exploitation of the krill ... generally applied under spatially and temporally varying conditions.  In the context of assessments of ... .  The current uncertainty in many of the parameter values could be included in the Monte Carlo ...

   Meeting Document : WG-EMM-12/38 : Автор(ы): A.J. Constable and S. Kawaguchi (Australia)

7. Growth of mackerel icefish (Champsocephalus gunnari) and age-size composition of populations in subarea of South Georgia

   were studied for different periods. The analysis of age composition of icefish in subarea 48.3 showed ... represented by fish of two contiguous age groups. It was shown that in the 1980s during a number of years the ... and 48.1 did not reveal any significant differences. The relatively high growth rate of icefish in ... growth in different regions of the South Atlantic in that time. Author(s):  K.V. Shust and E.N ...

   Meeting Document : WG-EMM-03/60 : Автор(ы): K.V. Shust and E.N. Kuznetsova (Russia)

8. Summary of a three year mark-recapture experiment to estimate population size of Antarctic toothfish (Dissostichus mawsoni) in Southern Area of Statistical Subarea 48.4

   mawsoni) in South of Statistical Subarea 48.4. This paper presents the results for D. mawsoni. Fishing ... vessel between 2008/09 and 2009/10, but the spatial coverage of fishing effort was reduced in 2010/11 due ... decline in catch rates over the three year study, more so between 2010 and 2011. A total of 476 D. mawsoni ... Abstract:  A three-year tagging experiment was initiated by the UK in 2008/09 fishing season with ...

   Meeting Document : WG-FSA-11/31 Rev. 2 : Автор(ы): R.C. Wakeford, J. Roberts and R.E. Mitchell (United Kingdom)

9. Detection of systematic change in Adélie penguin foraging trip duration: consequences of high inter-annual variability and usefulness of ice cover as a covariate

   from the onset of change (55% overall increase). Inclusion of ice cover as a covariate in the analyses ... enhanced detection of change for birds monitored in the guard stage of chick rearing. However, caution must ... part of the natural interannual variability in a monitored parameter is only useful if the covariate ... Adélie penguin colony with the aim of determining minimum sample sizes required to detect systematic ...

   Meeting Document : WG-EMM-05/22 : Автор(ы): J. Clarke, C. Southwell and L.M. Emmerson (Australia)

10. On necessity of longline fishery and research of Antarctic toothfish in all SSRUs of Subareas and Divisions 88.1, 88.2, 58.4.1, 58.4.2

    Abstract:  The analysis of catch size composition, statistical data on catches and distribution of ... Antarctic tooth-fish, and tagging data showed that the existing system of fishing subarea partition into ... SSRUs, open and closed for fishery, resulted in a lack of overall picture of population structure state ... , quantitative toothfish distribution over the whole aquatory in Divisions 88.1 and 58.4 and did not give an idea ...

    Meeting Document : WG-FSA-10/36 : Автор(ы): K.V. Shust, A.F. Petrov, V.A. Tatarnikov and I.G. Istomin (Russia)

Страницы