Résultats de la recherche
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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 ... production estimates from 2002-2012 for Cape Shirreff, Livingston Island. Age-specific natality rates are ... poor recruitment and an aging population. However, age-specific natality rate has also declined ... Antarctic bottom-up processes are widely cited for explaining penguin population declines, whereas for ...
Meeting Document : WG-EMM-14/39 : Auteur(s): M.E. Goebel and C.S. Reiss (USA)
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The BROKE-West acoustic krill biomass survey of CCAMLR Division 58.4.2
11 parallel transects between 30° and 80°E. The survey design was presented to WG-EMM for their ... Abstract: This document updates plans by Australia to conduct an acoustic biomass survey for ... is intended to produce a new estimate of B0 for this Division so that a revised precautionary catch ...
Meeting Document : WG-EMM-05/11 : Auteur(s): S. Nicol, S. Kawaguchi, T. Jarvis and T. Pauly (Australia)
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SC-CAMLR-XXVI
-IWC Workshop to review input data for Antarctic marine ecosystem models: update on progress since 2006 ... Provisional Agenda for the Twenty-sixth Meeting of the Scientific Committee for the Conservation of Antarctic ... Marine Living Resources SC-CAMLR-XXVI/02 Provisional Annotated Agenda for the Twenty-sixth Meeting of the ... Scientific Committee for the Conservation of Antarctic Marine Living Resources SC-CAMLR-XXVI/03 Report of the ...
Meeting
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A characterisation of the toothfish fishery in Subareas 88.1 and 88.2 from 1997–98 to 2012–13
vessels fishing shallower there in the last four years. There is some evidence for a similar reduction in ... biological aspects and catch of Antarctic toothfish for the period 1997–98 to 2012–13. In 2012–13, all the ... with no trend. A standardised CPUE analysis in the Ross Sea fishery showed an increase to 2008 followed ... mean age in SSRU 88.2H, but the data are very uncertain due to the paucity of otolith readings and it ...
Meeting Document : WG-FSA-13/48 : Auteur(s): S. Hanchet, S. Mormede and A. Dunn (New Zealand)
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Biology and harvesting of Dissostichus eleginoides around the Kerguelen Islands (Division 58.5.1)
(Division 58.5.1) Abstract / Description: Dissostichus eleginoides is becoming an increasingly important ... from year to year and highly dependent on the harvestable resources of Champsocephalus gunnari. Vital ... biological information on population dynamics, as well as demographic structures and trends observed in an ... abundance index, is provided. Prospects for exploitation are discussed with respect to the development of ... well as demographic structures and trends observed in an abundance index, is provided. Prospects for ... sont indiques entre parentheses. 1979/80 it 1983/84 1984/85 it 1988/89 1989/90 it 1990/91 (5 ans ... ................................. " .................. . 20 40 60 80 Lt (2crIl interval) 250 - 350 m -+- 350 - 450 m n=235 n=1069 100 120 -*- 450m ... S0 90 188 110 128 130 30 40 50 S8 78 S8 90 la8 118128 138 Longueur totals
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 85–106 : Auteur(s): Duhamel, G.
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WG-SAM-15
planned 3-year-old investigations) Delegation of Ukraine WG-SAM-15/39 South African work plan for 2015/16 ... report for the third year of the research fishery for Dissostichus spp. in Subarea 48.6 being jointly ... , Elan Bank for the years 2005-2014 K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan) WG-SAM ... season of the research plan initiated in 2012/13 for stocks of Dissostichus spp. in Divisions 58.4.1 and ...
Meeting
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Analysis of the diet of Champsocephalus gunnari at South Georgia in late summer from 1994 to 1997, Dr Eduardo L. Holmberg surveys
well as fish, was only occasional or negligible and varied from year to year. The spatial distribution ... /without food in Subarea 48.3, did not show a consistent pattern from year to year. Likewise, in the four ... length of C. gunnari did not reveal any selectivity pattern for any of the prey items. The availability ... and Thysanoessa sp., which are known to be important alternative food in years of krill scarcity, as ... (nearly 80% of mature fish) is in the range known for years of high food availability (75-85%), in ... frozen at -30°C and later examined at the Instituto Antiirtico Argentino. For the aim of this study ... : the dietary coefficient (Q%) showed a greater importance of T. gaudichaudii (75-80%) than krill (20 ... definite spatial pattern, except for an apparent higher concentration of krill in the southeastern part ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 103–123 : Auteur(s): Barrera-Oro, E., R. Casaux and E. Marschoff
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Brief results of research fishing in Subarea 88.3 in the 2010/11 season
distribution and nutrition of toothfish in subarea 88.3.B-D were collected 240 otolithes for age identification ... Abstract: According to the application that has been applied by Russian Federation in 2010 for ... “Sparta”, with two scientific observers aboard. They deployed 20 sets (trotline) at different depths ... sets had not took place because of complicated ice conditions. The catch was totally analyzed for its ...
Meeting Document : WG-SAM-11/09 : Auteur(s): Delegation of the Russian Federation
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Entanglement of Antarctic fur seals (Arctocephalus gazella) by man made debris at Bird Island, South Georgia, during the 2005 winter and 2005/06 breeding season
Georgia for the sixteenth consecutive winter (2005) and eighteenth consecutive summer (2005/06) are ... reported here. Two entanglements were observed in the winter, a decrease of 60% from the previous year, and ... occurred to an adult female entangled in a plastic packing band causing slight constriction to the ... these entanglements involved juveniles. Of the entanglements where the animal could be sexed, females ...
Meeting Document : SC-CAMLR-XXV/BG/13 : Auteur(s): Delegation of the United Kingdom
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SG-ASAM-18
): Monday, 30 April 2018 to Friday, 4 May 2018 Chair / Convener: Dr Xianyong Zhao (China) Support: Dr ... krill survey for CCAMLR Division 58.4.1 during 2018/19 season by the Japanese survey vessel, Kaiyo-maru ... Keith Reid Submissions Due: Monday, 16 April 2018 Meeting documents Doc Number Title SG-ASAM-18/01 ... Comparing two and three frequency dB window identification techniques for estimating Antarctic krill density ...
Meeting