Résultats de la recherche

1. Chinstrap penguins alter foraging and diving behaviour in response to krill size

   Abstract:  Penguins may exhibit plasticity in their diving and foraging behaviors in response to changes in prey availability. Chinstrap penguins are dependent predators of Antarctic krill in the Scotia Sea region. Both the sizes of krill found in penguin diets and acoustic estimates of krill

   Meeting Document : WG-EMM-07/11 : Auteur(s): A.K. Miller and W.Z. Trivelpiece (USA)

2. COMPARING CEMP INDICES TO INFORM FEEDBACK MANAGEMENT OF THE ANTARCTIC KRILL FISHERY

   Abstract:  Despite uncertainties about interactions between ecosystems and fisheries, the ability to adjust activity of the Antarctic krill fishery based on the state of krill-dependent predators is a recognized goal of the CCAMLR. We suggest that progress toward a feedback management approach can

   Meeting Document : WG-EMM-11/25 : Auteur(s): J.T. Hinke and G.M. Watters (USA)

3. A RE-ANALYSIS AND UPDATE OF THE ANTARCTIC KRILL BIOMASS IN THE SOUTH SHETLAND ISLANDS, THROUGH 2011

   Abstract:  Acoustically based estimates of Antarctic krill (Euphausia superba) biomass, and net-based estimates of krill density and recruitment are recalculated for the years 1996 through 2011. Recent changes in the acoustic methodology and target strength models are the basis for the

   Meeting Document : WG-EMM-11/26 : Auteur(s): A. Cossio, C. Reiss and R. Driscoll (USA)

4. NEW REGIONAL-SCALE SURVEYS OF THE ADÉLIE PENGUIN BREEDING POPULATION IN PRYDZ BAY: A STEP TOWARDS IMPROVED ESTIMATION OF KRILL CONSUMPTION IN EAST ANTARCTICA

   Abstract:  Understanding circumpolar penguin abundance is critical for developing realistic ecosystem models that might be used to inform the management of impacts due to climate change or fisheries. A review of historical Adélie penguin survey data in east Antarctica revealed Prydz Bay as a

   Meeting Document : WG-EMM-11/32 : Auteur(s): C. Southwell, J. McKinlay, K. Newbery, L. Emmerson and J. Lieser (Australia)

5. POTENTIAL PHENOLOGICAL RESPONSES TO ENVIRONMENTAL VARIABILITY AND CHANGE FOR ADÉLIE PENGUINS

   Abstract:  Phenological changes are touted to be an early indication of species response to environmental change and have been reported for a range of species around the globe. In Antarctica, there is a clear indication of phenological changes for the Adélie penguin (Pygoscelis adeliae) with

   Meeting Document : WG-EMM-11/33 : Auteur(s): L. Emmerson and C. Southwell (Australia)

6. A LARGE-SCALE SURVEY OF ADÉLIE PENGUIN BREEDING DISTRIBUTION IN EAST ANTARCTICA

   Abstract:  A recent gap analysis of knowledge of the breeding distribution of the Adélie penguin across the Australian Antarctic Territory in east Antarctica found that approximately half of the species’ potential breeding habitat had no evidence of ever being searched. With such incomplete

   Meeting Document : WG-EMM-11/34 : Auteur(s): C. Southwell and L. Emmerson (Australia)

7. PROPOSAL OF ACOUSTIC SURVEY OF ANTARCTIC KRILL USING FISHING VESSEL

   Abstract:  Japan is trying to use information obtained through the fishery effectively, and planning an acoustic survey using a commercial krill fishing vessel that enables annual data collection. This proposal focuses on monitoring yearly trend of krill distribution and fishing ground formation.

   Meeting Document : WG-EMM-11/35 : Auteur(s): K. Abe, M. Kiyota, F. Matsumoto and Y. Takao (Japan)

8. RESEARCH PLAN AND RESULTS OF PRELIMINARY OBSERVATION ABOUT THE POSSIBILITY OF ANTARCTIC KRILL ESCAPEMENT FROM A TRAWL NET

   Abstract:  We made a survey plan to observe krill escapement, attached an underwater video camera on a trawl net of a Japanese commercial trawler, and started observation to collect video images of krill passage through the rope and netting parts of the trawl net. Preliminary examination of video

   Meeting Document : WG-EMM-11/36 : Auteur(s): K. Fujita and S. Hasegawa (Japan)

9. USING AUTOMATED CAMERAS AS A COST-EFFECTIVE MEANS OF EXTENDING LAND-BASED PREDATOR MONITORING

   Abstract:  Cameras and other optical instruments are increasingly being used as cheap, convenient and reliable tools for surveillance and monitoring. This paper describes (1) the kinds of observations and measurements relevant to CEMP that can be obtained from an automated camera system

   Meeting Document : WG-EMM-11/37 : Auteur(s): C. Southwell, L. Emmerson and K. Newbery (Australia)

10. SOME POSSIBLE MODIFICATIONS TO CEMP STANDARD METHODS A3A, A3B AND A9 TO ALLOW GREATER FLEXIBILITY IN THE COLLECTION AND INTERPRETATION OF BREEDING POPULATION COUNT DATA

    Abstract:  At WG-EMM-09 the Working Group noted that the photographic method used in WG-EMM-09/38 could be incorporated as a modification of CEMP Standard Method A3 (penguin breeding population size). This paper reviews aspects of Methods A3a, A3b and related A9 (breeding chronology) in the most

    Meeting Document : WG-EMM-11/38 : Auteur(s): C. Southwell (Australia)

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