Search results
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Sexual dimorphism and sexual segregation in foraging strategies of northern giant petrels Macronectes halli during incubation
, duration of foraging trips) was greater for females than for males. In contrast, foraging efficiency ... regulated the duration and food intake of foraging trips depending on the depletion of the body reserves ... on seal and penguin carcasses. Foraging effort (flight speed, distance covered, duration of foraging trips ... the duration and food intake of foraging trips depending on the depletion of the body reserves. In males ...
Meeting Document : WG-FSA-99/38 : Author(s): J. González-Solís, J.P. Croxall and A.G. Wood (United Kingdom)
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Review of biological parameters for Ross Sea skates
(TL). The length at maturity of females is not well determined but is probably in the range 95–100 cm ... TL. Length at maturity of B. cf. eatonii is poorly determined, but is about 90–100 cm TL for males ... Abstract: Biological parameters were reviewed and updated for the two main species of skates ... . Differences in length-weight relationships among regions raise doubt about the conspecificity of A. georgiana ...
Meeting Document : WG-FSA-06/31 : Author(s): M.P. Francis (New Zealand)
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Review of CCAMLR activities on monitoring marine debris in the Convention Area
period 1994-1996 at Bird Island and Signy Island, but have declined thereafter. The level of marine ... were reported for the first time from Cape Shirreff. The number of Antarctic Fur seal entanglements at ... entangled at King George Island during the 2002 season, with nylon wrapped around its wing. The number of ... Abstract: The current status of national surveys on monitoring of marine debris and their impact ...
Meeting Document : SC-CAMLR-XXIII/BG/11 : Author(s): Secretariat
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Beach litter survey Signy Island, South Orkney Islands, 1992/93
their origin noted. At Foca Cove, a total of 23 items were recovered with a combined weight of 4.45 kg ... . At Cummings Cove, a total of 42 items were recovered (9.10 kg). No debris was found at Starfish Cove ... and the total number of items recovered. For example, at Foca Cove, the total weight of debris ... recovered fell by 80% and the number of items recovered by 83% over the three year survey period. At the ...
Meeting Document : CCAMLR-XII/BG/07 : Author(s): Delegation of United Kingdom
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The demersal fish communities of the shelf and slope of South Georgia and Shag Rocks (CCAMLR Subarea 48.3)
Abstract: Analysis of catch data from a deepwater trawl survey conducted at South Georgia and ... and is comprised largely of species endemic to the Southern Ocean and Scotia Sea. At increasing depths ... structure at South Georgia and Shag Rocks. Three distinct, depth stratified fish assemblages were observed ... . The demersal fish assemblage found on the shelf to depths of around 400m is dominated by notothenids ...
Meeting Document : WG-FSA-14/26 : Author(s): S. Gregory, M.A. Collins and M. Belchier (United Kingdom)
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NET-BASED VERIFICATION OF ACOUSTIC TECHNIQUES USED TO IDENTIFY ANTARCTIC KRILL
at 200 and 120 kHz (Sv200-120). We considered the performance of 4 different acoustic target ... window substantially smaller than the fixed 2-16 window, will at the same time reduce the amount of ... sampled by net we calculated the difference between acoustic backscatter at 120 and 38 kHz (Sv120-38) and ... -38, (iii) ‘2 freq 2-16’- where the Sv120-38 window was fixed at 2-16 dB and (iv) ‘2 freq 2-12’- where ...
Meeting Document : WG-EMM-08/54 : Author(s): J. Watkins and S. Fielding (United Kingdom)
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Density and abundance estimates of baleen whales recorded during the 2019 DY098 cruise in the Scotia Sea around South Georgia and the South Sandwich Islands
on the abundance of krill and so was not optimised for deriving design-based cetacean abundance ... estimates, but may provide a useful means of comparing whale densities and habitat use patterns between the ... species during the survey (226 sightings of a total count of 495 whales) and were widely distributed east ... of 42.5°W in all water depths surveyed, with fin whales the next most commonly sighted species (53 ...
Meeting Document : WG-EMM-2019/27 : Author(s): M. Baines, M. Reichelt, C. Lacey, S. Pinder, S. Fielding, N. Kelly, E. Murphy, P. Trathan and J.A. Jackson
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Distribution of foraging by female Antarctic fur seals
Antarctic fur seals breeding at the island of South Georgia. Bathymetric features of the continental shelf ... forage mainly 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 dispersed to specific ... the spatial impact of breeding female fur seals on krill at South Georgia. This suggested that, in ...
Meeting Document : WG-EMM-03/38 : Author(s): I.L. Boyd, I.J. Staniland and A.R. Martin (United Kingdom)
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Influence of data quality and quantity from a multiyear tagging program on an integrated fish stock assessment
-overlap), numbers of tagged fish, duration of the tagging program, using catch-at-length or catch-at-age ... , fishing, and data collection, this study investigated how the bias and precision of biomass estimates from ... an integrated tag-based assessment are influenced by various aspects of a multiyear tagging program ... , particularly the effects of the size of tagged fish compared with the size of fish in the catch (tag size ...
Meeting Document : WG-FSA-13/P03 : Author(s): P. Ziegler
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DEVELOPMENT AND IMPLEMENTATION OF AN ACCREDITATION FRAMEWORK FOR PARTICIPATION IN THE CCAMLR SCHEME OF INTERNATIONAL SCIENTIFIFC OBSERVATION
of observer programs participating in the CCAMLR SISO. At its 2009 meeting, TASO requested that the TASO co ... participating in the CCAMLR SISO. At its 2009 meeting, TASO requested that the TASO co-conveners outline ...
Meeting Document : SC-CAMLR-XXVIII/BG/09 : Author(s): Co-conveners of the ad hoc Technical Group for At-