Результаты поиска

1. Censuses in the northernmost colony of Emperor penguin (Aptenodytes forsteri) in the tip of the Antarctic Peninsula at Snow Hill Island, Weddell Sea, Antarctica

   situated on the south coast of Snow Hill Island, constituting the northernmost colony known in Antarctica ... . We conducted a census of adult individuals using aerial photographs taken from an aircraft flight ... over the colony during the 2013 breeding season. Likewise, we explored the colony by land, making an ...

   Meeting Document : WG-EMM-14/56 : Автор(ы): M. Libertelli and N. Coria (Argentina)

2. ASSESSMENT OF PATAGONIAN TOOTHFISH POPULATION IN THE NORTH OF SUBAREA 48.4 USING DATA FROM A FOUR-YEAR TAGGING EXPERIMENT

   in 2008/09, slightly under the target of 375 for the full 75 tonnes of catch; 3. There were 29 D ... some years; 6. Analysis of tagging and biometric data suggests that D. eleginoides at 48.4 have similar ... cohort spawned in the early-1990s and that growth parameters are similar for D. eleginoides caught in ... DATA FROM A FOUR-YEAR TAGGING EXPERIMENT Approval:  Approved ...

   Meeting Document : WG-FSA-09/17 : Автор(ы): J. Roberts and D.J. Agnew (United Kingdom)

3. Squeezed from both ends: Decline in Antarctic fur seals in the South Shetland Islands driven by both Top–down and Bottom–up processes

   .  This has led to an under emphasis of the role of bottom-up drivers for controlling fur seal production ... Antarctic bottom-up processes are widely cited for explaining penguin population declines, whereas for ... Antarctic fur seals, top-down processes are most cited as the primary driver for declining pup production ... production estimates from 2002-2012 for Cape Shirreff, Livingston Island.  Age-specific natality rates are ...

   Meeting Document : WG-EMM-14/39 : Автор(ы): M.E. Goebel and C.S. Reiss (USA)

4. Modelling growth of Antarctic krill: growth trends with sex, length, season, and region

   years accumulation of instantaneous growth rate (IGR) measurements were modelled using a Linear Mixed ... seasonal trend for each region. Smaller krill exhibited higher growth rates and a progressive decrease in ...

   Meeting Document : WG-EMM-05/29 : Автор(ы): S. Kawaguchi, S. Candy, R. King (Australia), M. Naganobu (Japan) and S. Nicol (Australia)

5. Otolith microstructure of juvenile fish, the first annulus radius and pelagic stage duration of icefish Champsocephalus gunnari (Channichthyidae) in the South Georgia area

   represent a mixture of two year-classes of 1999-2000 and 2000-2001. The mean width of the daily growth zone ... Abstract:  On the basis of the results of the trawl-acoustic survey in February-March 2002, the ... resulting age-length ratio can be used in separation of adjacent year-classes during juvenile fish surveys ... . The length of the young-of- the-year varies within a broad range as a result of prolonged spawning ...

   Meeting Document : WG-FSA-03/75 Rev. 1 : Автор(ы): L.V. Shcherbich (Russia)

6. A review of tag-based stock assessments of the Antarctic toothfish Dissostichus mawsoni in Subarea 48.4

   data available for this species in 48.4. During a review of assessment methodology two main issues have ...

   Meeting Document : WG-FSA-15/44 : Автор(ы): N. Walker, M. Soeffker, V. Laptikhovsky and T. Earl (United Kingdom)

7. Regional catch analysis of the longline fishery of Dissostichus eleginoides (Pisces: Nototheniidae) in Chile

   statistics published by the SERNAP (National Fishery Service). It shows that activity has lasted few years in ... that, during the last years, a worrying by catch of factory boulterer vessels dedicated to the austral ...

   Meeting Document : WG-FSA-91/10 : Автор(ы): C. Lemaitre, P. Rubilar, P. Gebauer and C.A. Moreno (Chile)

8. Change in environmental conditions of the Southern Ocean observed by satellites and data-assimilating models between 1981 and 2019

   ) from the AVHRR series of NOAA satellites (1981–2019); (3) spatial gradient of SST (as an indicator of ... Sea sector and on the Antarctic continental shelf; (5) gradual loss of sea-ice in the Amundsen Sea and ... Status:  Content Approved Document Release Consent:  No Delegation responsibility for releasing documents ...

   Meeting Document : WG-EMM-2019/39 : Автор(ы): M. Pinkerton

9. INCORPORATING SAMPLING VARIATION AND RANDOM READER ERROR INTO CALCULATION OF EFFECTIVE SAMPLE SIZE IN THE APPLICATION OF AGE LENGTH KEYS TO ESTIMATION OF CATCH-AT-AGE PROPORTIONS

   for the LF sample, where this ESS is obtained from the haul-level LF data, by an over-dispersion ... requires a nominal sample size for each fishery and year combination. A method is described for estimating ... Abstract:  Catch-at-age proportions are generally incorporated into an integrated assessment as ... an effective sample size (ESS) that can be used as the nominal multinomial sample size. The method ...

   Meeting Document : WG-SAM-09/08 : Автор(ы): S.G. Candy (Australia)

10. SPATIAL POPULATION MODEL USER MANUAL

    population dynamics and movement model. SPM can model population dynamics and movement parameters for an age ... data. SPM implements an age-structured population within an arbitrary shaped spatial structure, which ... manual describes how to use SPM, including how to run SPM, how to set up an input configuration file ...

    Meeting Document : WG-SAM-09/17 : Автор(ы): A. Dunn and S. Rasmussen (New Zealand)

Страницы