Search results
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Entanglement of Antarctic fur seal Arctocephalus gazella in man-made debris at Signy Island, South Orkney Islands 2001/02
Abstract: The results of the sixth annual survey of entanglement of Antarctic fur seals at Signy ... Island, South Orkney Islands are reported for the 2001/2002 summer season. There was a single sighting of ... that the number of entangled fur seals had increased by 118% compared to the previous year, this being ... the highest number recorded at Bird island since1992/93. With the presence of the entangled seal at ...
Meeting Document : SC-CAMLR-XXI/BG/06 : Author(s): Delegation of the United Kingdom
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A proposal to enhance and clarify CCAMLR’s Catch Documentation Scheme
Abstract: To prevent the entry of illegal, unreported and unregulated (IUU) toothfish ... (Dissostichus spp.) into commerce, CCAMLR’s catch documentation scheme tracks shipments from the point of ... harvest through final import for consumption. The move, in 2010, to a fully electronic Catch ... Documentation Scheme (e-CDS) has improved the tracking of toothfish moving in trade and decreased the potential ...
Meeting Document : CCAMLR-XXXI/38 : Author(s): Delegation of the USA
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SPATIAL PATTERNS IN MACKEREL ICEFISH DIET PROVIDES INSIGHTS INTO KRILL ABUNDANCE AND DISTRIBUTION
Abstract: The diet of mackerel icefish was investigated from stomachs of 828 fish caught on the ... South Georgia and Shag Rocks shelves in January 2009. The results show that the diet of this normally ... krill-dependent species was dominated by the hyperiid amphipod Themisto gaudichaudii (92 % IRI) and was ... low in Antarctic krill (7 % IRI) compared with similar data for the same month in 2004-2006. The ...
Meeting Document : WG-EMM-09/27 : Author(s): M.A. Collins and C.E. Main (United Kingdom)
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Age-length key for Champsocephalus gunnari from Subarea 48.3, Dr Eduardo Holmberg survey, February/March 1994
Abstract: An age-length key was prepared for Champsocephalus gunnari from the Subarea 48.3, based ... on the readings of otoliths randomly collected during the R/V Holmberg survey in Feb/Mar 1994. Small ... and medium sized fish (total length 12-33 cm) constituted the bulk of the samples (93%), while larger ... Rocks, a large concentration of fish belonging to age groups 2 (90%) and 3 (10%) was found. The length ...
Meeting Document : WG-FSA-94/11 : Author(s): E. Barrera-Oro, E. Marschoff and R. Casaux (Argentina)
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A study on calibration for commercial echosounder using bottom backscattering strength in Antarctic
fishing vessel to use it in estimating biomass of Antarctic krill (Euphausia superba). The method of ... calibration was to analyze the difference between the bottom backscattering strength of the commercial ... echosounder (i.e. ES70) and the scientific echosounder (i.e. EK60) at some transects designated by CCAMLR ... . 38kHz and 120kHz were used for the calibration, and krill swarm signals, obtained from multi frequencies ...
Meeting Document : SG-ASAM-17/P01 : Author(s): S.-G. Choi, H. Lee, K. Lee and J. Lee
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Mackerel icefish size and age at South Georgia and Shag Rocks
in the Southern Ocean have supported a fishery since the 1970s. This study has analysed the length ... modality in the length-frequency distributions. Lengths of age-classes derived by these two methods were ... differences in mortality between localities. To compensate for variation in the time of surveys, the mean TL ... of age-classes were standardized to a common day of the year (16 January) based on the Bertalanffy ...
Meeting Document : WG-EMM-03/7 : Author(s): A.W. North (United Kingdom)
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Near-shore acoustic surveys for Antarctic krill at South Georgia, January 2004
Abstract: Dual frequency (120 and 38 kHz) acoustic surveys were conducted around the Willis ... Islands and off the Barff Peninsula, South Georgia, from a 59 foot yacht in January 2004. The purpose of ... the surveys was to determine krill density near shore, in regions that have not traditionally been ... provisioning chicks ashore were foraging. Despite its relatively small size, the yacht (Golden Fleece) proved ...
Meeting Document : WG-EMM-04/35 : Author(s): A.S. Brierley, P.N. Trathan, J. Poncet and A. Morton (United Kingdom)
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Do Adélie penguin fledgling weights provide an index of prey availability?
between the two proxies was apparent when considering guard stage foraging trip durations but this was not ... as strong for the crèche foraging trips later in the season. Fledgling weights which are measured at ... the end of the breeding season were more strongly correlated with later foraging trips than with ... earlier trips. We interpret these results as an indication of variable resources between the guard and ...
Meeting Document : WG-EMM-05/21 : Author(s): L. Emmerson, C. Southwell and J. Clarke (Australia)
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Growth of mackerel icefish (Champsocephalus gunnari) and age-size composition of populations in subarea of South Georgia
were studied for different periods. The analysis of age composition of icefish in subarea 48.3 showed ... that the catches consisted mainly of individuals of 2-4 age groups, where more than 60% were ... represented by fish of two contiguous age groups. It was shown that in the 1980s during a number of years the ... class. These year classes appeared against a background of the intensive icefish fishery, and krill ...
Meeting Document : WG-EMM-03/60 : Author(s): K.V. Shust and E.N. Kuznetsova (Russia)
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Population and survival trends of wandering albatrosses (Diomedea exulans) breeding on Macquarie Island
declines and the Macquarie Island breeding populations is particularly vulnerable as it comprises fewer ... than 20 breeding pairs. Most breeding birds in this small population are banded and monitoring over the ... last 40 years has increasingly focused on their conservation status. Demographic trends of the ... extinction levels in the mid 1980’s. Underlying this decline was a significant decrease in juvenile survival ...
Meeting Document : WG-FSA-04/50 : Author(s): A. Terauds, R. Gales, R. Alderman and G.B. Baker (Australia)