Search results
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Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons
Abstract: Data collected from the FN American Champion during Phases 1 and 2 of the experimental ... generalized additive models show that the density of fishable P. spinosissima is highest off the northern ... coast of South Georgia and at depths between about 100 and 300 fathoms. The Phase 1 results suggest that ... it would not be appropriate to extrapolate local estimates of abundance to the whole of Subarea 48.3 ...
Meeting Document : WG-FSA-96/34 : Author(s): Watters, G.
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Adélie penguins as indicators of the state of the sea-ice in Adélie Land
Abstract: In the 2013-14 reproductive season, the 26,000 pairs of Adélie penguins from Pétrel ... of parents meant that the partner and/or the chick fasted longer at the nest, increasing the risk of ... desertion by the partner and the risk of dying of prolonged fast for the chick(s). Second, the season was ... characterized by unusual precipitations of rain around the turn of the year that killed massively the already ...
Meeting Document : WG-EMM-17/01 Rev. 1 : Author(s): Y. Ropert-Coudert, A. Kato and C. Barbraud
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Ross Sea Bioregionalisation, Part II: Patterns of co-occurrence of mesopredators in an intact polar ocean ecosystem
Abstract: We report results of analyses of niche occupation among mesopredators in the Ross Sea ... the surface of the ocean, 2) capacity to utilize differing amounts of the water column (foraging depth ... because of their rarity and, therefore, lack of adequate sighting data on which to generate spatial models ... (Maxent) was used to model spatial patterns of species’ probabilities of occurrence, and these data were ...
Meeting Document : WG-EMM-10/12 : Author(s): G. Ballard, D. Jongsomjit and D.G. Ainley (USA)
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By-catch of juvenile Champsocephalus gunnari in krill fishery on the shelf of South Georgia Island
Abstract: AtlantNIRO had conducted in 1982-1990 a series of juvenile fish trawl surveys of ... abundant species around South Georgia Is. Results of these survey were summarised and compared with ... published data. Juveniles of Champsocephalus gunnari were found to be distributed from the surface to 500 m ... depth with a maximum density observed at depth between 100 and 200 m. High catches of C. gunnari ...
Meeting Document : WG-FSA-92/06 : Author(s): G.A. Frolkina, V.I. Latogursky, V.A. Sushin (Russian Federation)
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Preliminary results of an age/length study of juvenile Notothenia rossii marmorata from Potter Cove, South Shetland Islands
Abstract: Whole otoliths and scales were used for a simultaneous age determination of juvenile ... Islands. Results from the analysis of both structures agreed in 95.5%. Likewise, the examination of ... otolith cross sections of chosen specimens confirmed in all the cases the age readings obtained from the ... second whole sagittal otolith. First October instead of the commonly accepted 1 July, was taken as the ...
Meeting Document : WG-FSA-90/09 : Author(s): E. Barrera-Oro and R. Casaux (Argentina)
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Plan of research program of the Russian Federation in Subarea 48.5
Abstract: Closed mostly within the Weddell Sea Subarea 48.5 is one of the closed data-poor CCAMLR ... subareas, where stock assessment should be carried out. In spite of hard ice conditions at most part of the ... of the first and the second stage of this program. It highlights the Weddell Sea as one of the most ... promising area for exploratory fishery of Dissostichus sp. However, fishery in Subarea 48.5 is closed on the ...
Meeting Document : WG-FSA-16/15 Rev. 1 : Author(s): Delegation of the Russian Federation
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INGESTION OF FISHING GEAR AND ENTANGLEMENTS OF SEABIRDS: IMPLICATIONS FOR MONITORING AND MANAGEMENT
non-target species. Although deliberate dumping of plastics at sea is banned, not all fisheries ... legislation prohibits discarding of gear (hooks and line) in offal, and compliance is often unknown. Analysis ... of a 16 year dataset collected at Bird Island indicated that the amount of gear found in association ... with wandering albatross colonies was an order of magnitude greater than in any other species ...
Meeting Document : WG-IMAF-09/10 : Author(s): R.A. Phillips, C. Ridley, N. Harrison (United Kindom), K. Reid (Secretariat), G.N. Tuck (Australia) and P.J.A. Pugh (United Kingdom)
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Temporal scales of foraging in a marine predator: implications for interpreting the distribution of prey
Abstract: The pattern of prey distribution can profoundly affect the foraging behavior and ... success of a predator. In pelagic marine ecosystems, where prey is often patchily distributed, predators ... must be able to adapt quickly to changes in the spatial patterning of prey. Antarctic fur seals feed ... indication of the distance between patches. The frequency distribution of intervals between bouts of foraging ...
Meeting Document : WG-EMM-95/23 : Author(s): Boyd, I.L.
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Network characterisation of the food-web of the Ross Sea, Antarctica
Abstract: A balanced ecosystem model is used to explore the system-level characteristics of the ... food-web of the Ross Sea shelf and slope before the advent of commercial fishing for Antarctic ... toothfish (Dissostichus mawsoni) in the region. We evaluate: (1) biomass and flow of organic matter by ... food-web structure and function at the spatial, temporal and ecological scale of the ecosystem model ...
Meeting Document : WG-EMM-12/53 : Author(s): M.H. Pinkerton and J.M. Bradford-Grieve (New Zealand)
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A critical re-examination of the evidence for a possible dependence of Weddell seals (Leptonychotes weddellii) on Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea, Antarctica
(Dissostichus mawsoni; ‘toothfish’) in the Ross Sea may affect the ecological viability of top predators such as ... Weddell seals (Leptonychotes weddellii), but available evidence remains inconclusive as a result of both ... the assumptions underlying application of stable isotope methodology to Weddell seals, and estimate ... the potential contribution of toothfish to the diet of Weddell seals using an isotope mixing model ...
Meeting Document : WG-EMM-13/28 : Author(s): R. Eisert, M.H. Pinkerton (New Zealand), S.D. Newsome and O.T. Oftedal (USA)