Search results
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Krill caught by predators and nets: differences between species and techniques
during February 1986 at South Georgia were compared to krill from scientific nets fished in the area at ... differences from krill taken by other predators and by nets. There were significant differences in the ... maturity/sex stage composition between nets and predators; in particular all predator species showed a ... consistent sex bias towards female krill. Similarities in the krill taken by macaroni (offshore feeding) and ...
Meeting Document : WG-EMM-96/09 : Author(s): Hill, H.J., Reid, K., Trathan, P.N., Croxall, J.P.
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Proposal of extension of research block 48.6_2 to complete planned research and examine the habitat model and the stock structure
model and elucidate stock structure. The distribution of densities (catch per haul in 20-minute grid) of ... Dissostichus mawsoni is shown in Figure 1. The research operation for the block 48.6_2 has been concentrated in ... its southeastern bank (south of ca. 55.2°S) with higher fish densities but scarce in the northern area ... tonnes) since the current research block was set in 2013. Thus, unutilized portions of catch limit were ...
Meeting Document : WG-SAM-16/08 : Author(s): T. Namba, T. Ichii and K. Taki
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KRILL FISHERY REPORT: 2011 UPDATE
and Poland have fished for krill in Area 48. The total catch reported to May 2011 was 110949 t, most ... for the season falls in the range 153000-214000 t. In 2009/10, 10 vessels fished for krill in Area 48 ... predominantly in Subarea 48.2, notably 48444 t from SOW (South Orkney West). The catches of krill reported from ... SSMUs APBSE, APBSW and APW in 2009/10 were the highest catches reported from those SSMUs in the history ...
Meeting Document : WG-EMM-11/05 : Author(s): Secretariat
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DISCRIMINATION OF ENVIRONMENTAL VARIABLES THAT INFLUENCE THE CATCH PER UNIT EFFORT: THE CASE OF THE ANTARCTIC KRILL FISHERY
standardization process consisting of isolating all those exogenous factors from temporal variations in abundance ... from the CPUE time-series. These exogenous factors include those generated by modifications in fishery ... vessel efficiency, variations in fishing strategies, and environmental fluctuations. The selection of the ... the environmental effects vary on different temporal scales in autocorrelated and non-random manners ...
Meeting Document : WG-EMM-11/P3 : Author(s): J.C. Quiroz, R. Wiff, M.A. Barrientos and F. Contreras
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Note sur l'étude d'évaluation de l'impact des pêcheries sur les populations de pétrels à menton blanc Procellaria aequinoctialis et de pétrels gris Procellaria cinerea aux îles Crozet et Kerguelen
between 1983 and 2004, with the main cause being changes in environmental variables. Nevertheless, the ... decrease in the population was more marked as a result of previous levels of incidental mortality. At ... present, the level of mortality of white-chinned petrels in Subarea 58.6 has not reached the critical ... mortality of white-chinned petrels in Division 58.5.1 have probably had a negative effect on the population ...
Meeting Document : SC-CAMLR-XXVI/BG/22 : Author(s): Délégation française
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Trends of Antarctic fur seal population at SSSI No. 32, Livingston Island, South Shetlands, Antarctica
Abstract: We update in this paper the previously reported model for the Antarctic fur seal ... developed at Cape Shirreff during 1998/99, but we could not census the San Telmo Islets. In this regard, we ... had to model the population at the latter site, in order to have a complete estimate of the population ... . From this, we estimated an overall increase of 17% in the total population, including in this figure a ...
Meeting Document : WG-EMM-99/16 : Author(s): R. Hucke-Gaete, D. Torres, A. Aguayo, J. Acevedo and V. Vallejos (Chile)
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Potentially commercial invertebrates on Ob Bank: Moroteuthis ingens (Oegopsida) and Paralomis aculeata (Anomura) (Division 58.4.4)
, they have not been fished nor any fishable aggregations of them detected to date in the CCAMLR ... Convention Area. The squid Moroteuthis ingens has been constantly present in bottom trawl catches on Ob Bank ... during aimed fishery for Lepidonotothen squamifrons. At maximum, the proportion of squid in the total ... catches exceeded half of the catch, reaching 1310 kg per hour of trawling. All the squid were in ...
Meeting Document : WG-FSA-96/15 : Author(s): Pshenichnov, L.K.
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Age determination of the Antarctic fishes Champsocephalus gunnari and Notothenia rossii from South Georgia
Abstract: Foremost in the elucidation of accurate population dynamics parameters in fish is a ... , including mortality, population age structure, and changes in individual growth. Most investigations have ... used annual rhythmic deposition in calcified tissues as time marks but, due ts the lack of distinct ... periodicity in Antarctic hydrographic conditions, age determination of Antarctic fish has proven to be ...
Meeting Document : SC-CAMLR-VI/BG/43 : Author(s): R. Radtke (USA)
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Slow recovery of previously depleted demersal fish at the South Shetland Islands, 1983–2010
closed this fishery in 1990. We report changes in size and abundance of the commercially exploited ... declined from 1983 to 1991, and an increase in mean size during 1983-84 is consistent with weak cohorts ... stability (1992-1994), a sharp increase in length and a continued decline in relative abundance indicated ... period showed no change in modal size or mean length of the fish. We relate these patterns to the fishery ...
Meeting Document : WG-FSA-12/P01 : Author(s): E.R. Marschoff, E.R. Barrera-Oro, N.S. Alescio and D.G. Ainley
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A proposal for the establishment of a Ross Sea Region Marine Protected Area
(Commission or CCAMLR) of a marine protected area (MPA) in the Ross Sea Region (“Ross Sea Region Marine ... Protected Area”). First submitted at CCAMLR XXXI in October 2012 and again at CCAMLR SM-II in July 2013 ... MPA proposal at the recent meetings of the Scientific Committee and Commission in Bremerhaven in July ... revisions are changes to the proposed MPA boundaries in the areas of the northern seamounts and Scott ...
Meeting Document : CCAMLR-XXXII/27 : Author(s): Delegations of New Zealand and the USA