Search results
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A review of rattail (Macrourus spp.) and skate by-catch and analysis of standardised CPUE, for the exploratory fishery in the Ross Sea (CCAMLR Subareas 88.1 and 88.2) from 1997/98 to 2004/05
rattails (Macrourus spp.) and skates in the exploratory fishery for toothfish in the Ross Sea (CCAMLR ... from all vessels in the fishery from 1997/98 to 2004/05. The major factors influencing rattail bycatch ... , 88.1I, 88.1K and 88.2E) in depths from 600 to 1000 m, and there was an order of magnitude difference in ... shown a general increasing trend since 1998/99, with a peak in 2002/03. It was not possible to reliably ...
Meeting Document : WG-FSA-05/24 : Author(s): S.L. Ballara and R.L. O’Driscoll (New Zealand)
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Post-fledging and winter migration of Adélie penguins (Pygoscelis adeliae) in the Mawson region of east Antarctica
chick left Magnetic Island near Davis station (68°33'S, 77°54'E) in February 1995 and was ... fast-ice or in the pack-ice. Fledglings had travelled between 536 and 1931 km to the west of their ... -set to transmit intermittently for the first five months and one day in four thereafter. Adult birds ... movements over the winter months were closely related to those of sea-ice in the region. Ice motion patterns ...
Meeting Document : WG-EMM-02/47 : Author(s): J. Clarke and K. Kerry (Australia), C. Fowler (USA), R. Lawless, S. Eberhard and R. Murphy (Australia)
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Escapement of elephant seal prey in the Heard Island fishery for Dissostichus eleginoides
Elephant seals in the Heard Island region. A question was raised at SC-CAMLR-XV concerning what affect the ... fishery for toothfish in Division 58.5.2 might have on the abundance of the age classes of toothfish ... of 3800 tonnes. Of 21 otoliths found in Elephant Seal stomachs at Heard Island that have previously ... reliably and related to a specific size class of fish. However, it seems that toothfish in the age range of ...
Meeting Document : WG-EMM-97/42 : Author(s): Slip, D., Constable, A.J., de la Mare, W.K., Williams, R.
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Annual variation in breeding biology of gentoo penguins, (Pygoscelis papua) at Bird Island, South Georgia
later in 1987, when the breeding population decreased markedly. Factors involved in the timing of ... breeding are discussed. Within years egg-laying was highly synchronous: 95% of clutches were initiated in ... breeding population at Bird Island decreased by 20% and increased by 84% in successive years during the ... varied annually, and with age of the breeding bird, nest location and, in one year, with laying date ...
Meeting Document : WG-CEMP-90/38 : Author(s): T.D. Williams (United Kingdom)
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Further development of a spatially explicit population dynamics operating model for Antarctic toothfish in the Ross Sea region
younger fish were found predominantly in southern areas of the Ross Sea shelf, mature fish on the slope ... and spawning fish in the northern areas of the Ross Sea region. Fits to the observations were ... generally good. Further investigations are recommended in order to further validate and refine this model ... data in areas not fished to date. In addition, further external validation diagnostics need to be ...
Meeting Document : WG-SAM-13/35 : Author(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)
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Spatial overlap of krill-dependent predators and krill fishery catches and a proposal for subdivision of catch limits in Subarea 48.1
overlap in Area 48, with particular emphasis on Subarea 48.1. We used habitat utilization data for ... in Subarea 48.1. In general, overlap of summer and winter foraging habitats with krill catches in ... during the winter period, especially in the Bransfield Strait. Across years, predator distributions ... large differences in total catch in Subarea 48.1 suggests plausible local impacts on gentoo penguin ...
Meeting Document : WG-EMM-14/36 : Author(s): J.T. Hinke, M.E. Goebel (USA), M.M. Santos (Argentina), P.N. Trathan (UK), W.Z. Trivelpiece and G.M. Watters (USA)
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Preliminary evaluation of two feedback management strategies for the krill fishery in Subareas 48.1–48.3
for the krill fishery will compromise the Commission’s ability to achieve the objectives in Article II ... management strategies in which the overall catch limit is dynamically redistributed among small scale ... ‑2) or (2) changes in penguin abundance. Relative to the case in which the overall catch limit is ... statically distributed among SSMUs in proportion to catches taken during 2009-2016, we found that the two ...
Meeting Document : SC-CAMLR-XXXVII/BG/12 : Author(s): Delegation of the USA
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Advances are urgently needed in providing regular estimates of krill stock status based on the available data
Abstract: CCAMLR currently manages the krill fishery in subareas 48.1 to 48.4 using an arbitrary ... measure (the trigger level) which was established in 1991 and is “not related to the status of the krill ... -species feedback loop that is widely used in fishery management elsewhere, including in other CCAMLR ... fisheries. This feedback loop regularly modifies management measures, such as catch limits, in response to ...
Meeting Document : WG-EMM-2019/28 : Author(s): S. Hill, J. Hinke, N. Ratcliffe, P. Trathan and G. Watters
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Distribution, morphology, growth, reproduction, diet and trophic position of two species of grenadier (Macrourus whitsoni and M. caml) in the Ross Sea region of the Southern Ocean (CCAMLR Subareas 88.1 and 88.2)
Macrourus whitsoni and M. caml in the Ross Sea region of the Southern Ocean. Fish were caught by New Zealand ... vessels in the fishery for Antarctic toothfish (Dissostichus mawsoni) between December 2011 and February ... 2012 from CCAMLR subareas 88.1B, 88.1C, 88.1G, 88.1H, 88.1K and 88.2H. In total, 227 M. whitsoni and ... . whitsoni examined was 65 cm TL and 1.3 kg. The two main morphological characters (number of rays in the ...
Meeting Document : WG-FSA-12/54 Rev. 1 : Author(s): M.H. Pinkerton, P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown (New Zealand)
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Uncertainty in reported geographical distribution and weight of krill catches from Norwegian krill fishing vessels operating continuous fishing systems
ensure catch reporting in accordance with the present conservation measure (CM 21-03) and to investigate ... potential errors in historical catch report data. As a response, the Norwegian delegation presented a list ... estimate variability in the conversion from krill holding tank volumes to krill biomass indicated that a ... reported catch time and actual catch time since the krill catch is kept in holding tanks before being ...
Meeting Document : WG-EMM-18/22 : Author(s): G. Skaret, T. Knutsen, F. Grebstad and O.A. Bergstad