Résultats de la recherche
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Spatial distribution of foraging by female Antarctic fur seals
by female Antarctic fur seals breeding at the island of South Georgia was influenced by physical ... within 100 km of the location at which the offspring was being raised. When this constraint was removed ... at the end of lactation, females foraged to much greater ranges and there was evidence that they ... Abstract: The study tested the hypothesis that the distribution of critical habitat for foraging ...
Meeting Document : WG-EMM-01/26 : Auteur(s): I.L. Boyd, I.J. Staniland and A.R. Martin (United Kingdom)
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ANALYSIS OF KRILL OBSERVER COVERAGE IN SUBAREA 48.3
efficient sampling proportion, at least for 48.3, should be >50% of vessels sampled each season, 20% of ... been implemented since 2002. Observers have been placed on approximately 50% of vessels fishing in any ... one season, and have been present on board for about 30% of the fishing season. They have achieved a ... rate of sampling equivalent to 18% of total hauls taken in a season being sampled for krill and 11% for ...
Meeting Document : WG-EMM-09/25 : Auteur(s): D.J. Agnew, P. Grove, T. Peatman, R. Burns and C. Edwards (United Kingdom)
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Net sample validation of acoustic techniques used to identify and size Antarctic krill
echo-charts were also identified as krill on the basis of their difference in backscatter at 38 and 120 ... identified and distinguished from all other types of backscatter. Traditionally this has been achieved by ... sampling characteristic types of acoustic target with nets. More recently partitioning of backscatter into ... species groups has been attempted using differences in echo strength at two acoustic frequencies (ΔMVBS ...
Meeting Document : WG-EMM-97/46 : Auteur(s): Watkins, J.L., Brierley, A.S.
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Warming effects in the Western Antarctic Peninsula Ecosystem: the role of population dynamic models for explaining and predicting penguin trends
suggest that the relevant processes underlying the population dynamics of these penguin species at King ... idea that global warming represent a major driver of avian predator populations and its major prey at ... developed simple conceptual models for decipher the role of climate and krill fluctuations on the population ... dynamics of these three pygoscelid penguin species inhabiting the Antarctic Peninsula region. Our results ...
Meeting Document : WG-EMM-12/18 : Auteur(s): M. Lima and S.A. Estay (Chile)
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DISTRIBUTION AND ABUNDANCE OF SKATES ON THE KERGUELEN PLATEAU (CCAMLR DIVISIONS 58.5.1 AND 58.5.2)
from the trawl fisheries at HIMI are low and do not show any evidence of depletion in the main fishing ... Abstract: Three species of skates are commonly taken as incidental by-catch in the Patagonian ... . eatonii and B. irrasa are most abundant to the north and northwest of Heard Island out to the edge of the ... EEZ, and down to depths of 1100m and 1500m respectively. B. irrasa occurs much deeper, down to 2300m ...
Meeting Document : WG-FSA-09/43 : Auteur(s): G.B. Nowara, D.C. Welsford, T. Lamb (Australia), N. Gasco, P. Pruvost and G. Duhamel (France)
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Korean research project on the ecosystem structure and function of the Ross Sea region MPA (2017–2022)
dynamics, breeding success and foraging behavior of the Adélie penguin will be conducted at Cape Hallett ... based on Jang Bogo Station, and the field camp at Cape Hallett. Author(s): Delegation of the Republic ... with an extraordinary rich biota. To conserve marine living resources and the ecosystem of the Ross Sea ... , CCAMLR designated the area as a Marine Protected Area (MPA) at the 35th annual meetings in 2016. Since ...
Meeting Document : SC-CAMLR-XXXVI/BG/17 : Auteur(s): Delegation of the Republic of Korea
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Review of CCAMLR activities on monitoring marine debris in the Convention Area
of marine debris found in seabird colonies at Bird Island has continually increased, with fishing ... Abstract: The current status of national surveys on monitoring of marine debris and their impact ... Database contains data from 11 sites, all within the Area 48 of which there are 3 sites that have data form ... , reached a peak in the period 1994–1996 at Bird Island and Signy Island has declined thereafter. The level ...
Meeting Document : SC-CAMLR-XXII/BG/25 : Auteur(s): Secretariat
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Estimating the biodiversity of Planning Domain 5 (Marion and Prince Edward Islands – Del Cano – Crozet) for ecoregionalisation
18th May, 2012 at the headquarters of TAAF (French Southern and Antarctic Territories). It followed a ... ecoregionalisation has to be conducted at the scale of plateaus which includes Prince Edward Islands, Del Cano Rise ... populations of several seabirds that breed at the islands have decreased. There is accumulating evidence that ... fishing is at present excluded within 12 nautical miles of the islands, providing some protection to ...
Meeting Document : WG-EMM-12/33 Rev. 1 : Auteur(s): P. Koubbi (France), R. Crawford (South Africa), N. Alloncle, N. Ameziane, C. Barbraud, D. Besson, C.-A. Bost, K. Delord, G. Duhamel (France), L. Douglass (Australia), C. Guinet (France), G. Hosie (Australia), P.A. Hulley (South Africa), J. O. Irisson (France), K.M. Kovacs (Norway), R. Leslie, A. Lombard, A. Makhado (South Africa), C. Martinez (France), S. Mormede (New Zealand), F. Penot (France), P. Pistorius (South Africa), P. Pruvost (France), B. Raymond (Australia), E. Reuillard, J. Ringelstein (France), T. Samaai (South Africa), P. Tixier (France), H.M. Verheye (South Africa), S. Vigetta (France), C. von Quillfeldt (Norway) and H. Weimerskirch (France)
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Variation in the distribution of Antarctic krill Euphausia superba around South Georgia
cruises and look particularly at differences between krill taken from the eastern and western ends of the ... krill were found in Weddell Sea water and that the length-frequency distributions at the western end of ... experience different conditions during transport to South Georgia and at either end of the island. Author(s ... Abstract: Between 1980 and 1997 British Antarctic Survey carried out 11 cruises in the region of ...
Meeting Document : WG-EMM-97/47 : Auteur(s): Daly, H.I., Murray, A.W.A., Watkins, J.L.
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An updated descriptive analysis of the toothfish (Dissostichus spp.) tagging program in Subareas 88.1 and 88.2 for 2006/07
-recapture data that were presented at the October 2006 meeting of WG-FSA by including data from New Zealand ... Zealand vessels were incomplete at the time of this analyses and will need to be updated in future ... Abstract: Descriptive analyses of the toothfish tagging programme carried out in Subareas 88.1 ... and 88.2 since 2001 are updated. The paper provides a preliminary update of the tag-release and tag ...
Meeting Document : WG-SAM-07/5 : Auteur(s): A. Dunn, S.M. Hanchet and S.L. Ballara (New Zealand)