Résultats de la recherche

1. Temporal variability in Antarctic marine ecosystems: periodic fluctuations in the phocid seals

   observations are confirmed, they point to large-scale oceanographic variation, possibly related to the El Niño ... behavior when demodulated at a period of 5 yr. The Weddell seals were generally in phase with the SOI since ... thereafter the SOI series led the leopard seal series by about one quarter of a cycle. The crabeater series ...

   Meeting Document : WG-CEMP-91/13 : Auteur(s): J.W. Testa, G. Oehlert, D.G. Ainley, J.L. Bengtson, D.B. Siniff, R.M. Laws and D. Rounsevell (USA)

2. Unhappy feet: the reduction of Adélie and chinstrap penguin populations in the West Antarctic Peninsula/Scotia Sea

   Abstract:  New and alarming evidence has been published by Trivelpiece et al. recently about the ... . Trivelpiece et al. argue that the reduction of the populations of both species could be attributed to changes ... context, CCAMLR should keep a precautionary approach in the management of the krill fishery to reduce ...

   Meeting Document : CCAMLR-XXX/BG/21 : Auteur(s): Submitted by ASOC

3. Discussion on recent results from an integrated assessment of Antarctic krill (Euphausia superba) in Subarea 48.1

   Abstract:  This is a companion paper to Kinzey et al. (2014), who extended the integrated stock ... and estimate krill growth.  Kinzey et al. (2014) fitted stock-assessment models to survey data that ... from three of the models provide a robust picture of changes in the krill population.  An annual model ... surveys estimated similar absolute biomasses and changes in biomass.  A seasonal model estimated similar ...

   Meeting Document : WG-EMM-14/35 : Auteur(s): G.M. Watters, C.S. Reiss and D. Kinzey (USA)

4. Population of macaroni penguins Eudyptes chrysolophus at Marion Island, 1994/95 to 2002/03, with information on breeding and diet

   correlated. Both showed a marked decrease in 1998/99, after the El Niño of 1997/98. In most seasons from 1994 ... demonstration of a significant decrease in the overall population. Numbers of occupied nests at other colonies ... decreased from 79 000 in 1994/95 to 31 000 in 2002/03. At three small colonies there was a significant ... . However, during this period there was a significant increase in reproductive success with time. In the ...

   Meeting Document : WG-EMM-03/15 : Auteur(s): R.J.M. Crawford, J. Cooper and B.M. Dyer (South Africa)

5. Precision of growth band determination from eyestalk sections of Antarctic krill (Euphausia superba) preserved in formalin

   technique before reading, contrary to Krafft et al. (2016) and Kilada et al. (2017). Combined with published ... have a greater impact on the feedback management process because this preservation method was more ... infromation were not including published paper). This method is direct and uses a grinding and polishing ... studies, specimens collected from autumn to winter in this study can provide a better understanding of ...

   Meeting Document : WG-EMM-18/P16 : Auteur(s): G.P. Zhu, Y. Yang, Q. Song and H.T. Zhang

6. CLIMATICALLY DRIVEN FLUCTUATIONS IN SOUTHERN OCEAN ECOSYSTEMS

   atmospheric teleconnections with El Niño Southern Oscillation (ENSO)-related processes. These SST anomalies ... of how biological and physical processes interact across a wide range of scales. Here we examine the ... than 1 year), where ENSO and Southern Annular Mode-related atmospheric processes have a direct ... °C over the next 100 years could lead to more than a 95% reduction in the biomass and abundance of ...

   Meeting Document : WG-EMM-08/P02 : Auteur(s): E.J. Murphy, P.N. Trathan, J.L. Watkins, K. Reid, M.P. Meredith, J. Forcada, S.E. Thorpe, N.M. Johnston and P. Rothery

7. Large-scale oceanographic fluctuations drive Antarctic petrel survival and reproduction

   (the El Niño Southern Oscillation and Antarctic Oscillation Indices) we assessed their e cacy to ... predict variation in the demographic parameters of Antarctic seabirds. First, we used a long-term dataset ... Antarctic seabirds have a coherent ngerprint across the Antarctic continent and nearby islands. We found ... populations in Antarctica without additional data.  Author(s):  S. Descamps, A. Tarroux, S.-H. Lorentsen, O.P ...

   Meeting Document : WG-EMM-16/P14 : Auteur(s): S. Descamps, A. Tarroux, S.-H. Lorentsen, O.P. Love, Ø. Varpe and N.G. Yoccoz

8. Physical forcing in the southwest Atlantic: ecosystem control

   anomaly data for the El Niño 4 region in the Pacific show that variability at South Georgia also reflects ... . Biological variability is also apparent at South Georgia, being evident in data from a suite of top predators ... correlated with warm anomaly periods, but lagged by a number of months. For some predators the most critical ... . Thus, gentoo penguins (Pygoscelis papua) show a strong negative relationship between the number of ...

   Meeting Document : WG-EMM-04/34 : Auteur(s): P.N. Trathan, E.J. Murphy, J. Forcada, J.P. Croxall, K. Reid and S.E. Thorpe (United Kingdom)

9. ENVIRONMENTAL FORCING AND SOUTHERN OCEAN MARINE PREDATOR POPULATIONS: EFFECTS OF CLIMATE CHANGE AND VARIABILITY

   include changes to the long interdecadal background signals such as the development of the El Niño ... Abstract:  The Southern Ocean is a major component within the global ocean and climate system and ... various ways, including alterations to climate and weather patterns across a variety of time-scales that ... –Southern Oscillation (ENSO). Oscillating climate signals such as ENSO potentially provide a unique ...

   Meeting Document : WG-EMM-08/P06 : Auteur(s): P.N. Trathan, J. Forcada and E.J. Murphy

10. Revised reports on abundance and biological information of toothfish in Division 58.4.3b by Shinsei Maru No.3 in 2010/11 and proposal of the consecutive survey in 2011/12

    Abstract:  A survey was conducted in order to collect information for the stock status and biology ... of toothfish in the southeast sector (24 allocated hauls) of Division 58.4.3b (BANZARE Bank), using a ... species was 12.0 ton in the SE sector, where the catch limit of 15 ton was set. Mean CPUE of Dissostichus ... . mawsoni and 79 % for D. eleginoides). There was a significant difference in physical conditions of D ...

    Meeting Document : WG-FSA-11/13 Rev. 1 : Auteur(s): K. Taki, T. Iwami and M. Kiyota (Japan)

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