Search results
-
Developing research on Antarctic krill to facilitate the development and updating of feedback management procedures
Abstract: Antarctic krill fisheries have the potential to be in the top 10 fisheries of the world ... in terms of biomass production. The expansion of the fishery from current levels appears inevitable ... 2002-2004. Since that time, there have been shifts in the behaviour and methods of the krill fishery ... remain a number of major gaps in our understanding of the basic biology and dynamics of krill populations ...
Meeting Document : WG-EMM-13/12 : Author(s): E.J. Murphy, R.D. Cavanagh (United Kingdom), A. Constable (Australia), E.H. Hofmann (USA), S.L. Hill, N.M. Johnston, P.N. Trathan and J.L. Watkins (United Kingdom)
-
Estimation of the fishery–krill–predator overlap
the level of overlap in recent years (1995-98) than estimated with either the catch in the CPD or the ... small difference in the values of the Agnew-Phegan and Schroeder indices, but had little influence on ... inter-annual trends. Increasing the level of resolution of the model, and in particular the spatial ... resolution, resulted in lower overlap between the krill fishery and the krill predators, and lower values of ...
Meeting Document : WG-EMM-99/11 : Author(s): Secretariat
-
Evaluation of Antarctic krill biomass and distribution off the South Orkney Islands 2011-2015
high, in the range 100-300 g/m 2 based on the 120 kHz recordings, and a total estimated biomass of ca ... . 8 million tons of krill within the stratum in the peak year 2014. There were also consistently ... canyons. In 2012, and particularly in 2015, low proportions of the acoustic backscatter were allocated to ... Institute of Marine research, Norway near the South Orkney Islands since 2011. The survey has been conducted ...
Meeting Document : WG-EMM-15/54 : Author(s): G. Skaret, B.A. Krafft, L. Calise (Norway), J. Watkins (UK), R. Pedersen and O.R. Godø (Norway)
-
Cephalopod diet of the southern elephant seal (Mirounga leonina) at King George Island, South Shetland Islands
Abstract: In the austral summer of 1995/96, 25 southern elephant seals, Mirounga leonina, were ... present in 72% of the individuals sampled (n=18). Seven species of squid and 3 of octopus were identified ... . Overall, the squid species Psychroteuthis glacialis was by far the most important prey in terms of numbers ... (77%), biomass (80.8%) and frequency of occurrence (94.4%). Next in importance in terms of mass in the ...
Meeting Document : WG-EMM-99/13 : Author(s): G.A. Daneri, A.R. Carlini (Argentina) and P.G.K. Rodhouse (United Kingdom)
-
New Zealand: Review of the Ross Sea region stock assessment
every year using tree regression on mean length by set – Tagged fish released by area to account ... quarantined data • Red line ~ mean age for all years 32 AF Slope 33 AF North Survey information ...
Document : Site Section: Meetings
-
Diet and feeding ecology of the diving petrels Pelecanoides georgicus and P. urinatrix at South Georgia
Bird Island, South Georgia. The diet of both species was dominated by crustaceans. in particular ... crustaceans in the diet of P. georgicus. and copepods, which contributed 71 % of the biomass of crustaceans in ... the diet of P. urinatrix. Calanoides acutus was the most numerous copepod in the diet of both species ... in the diet of P. georgicus, Primo macropa, was absent from the diet of Pelecanoides urinatrix, in ...
Meeting Document : WG-EMM-97/10 : Author(s): Croxall, J.P., Prince, P.A., Hill, H.J., Edwards, T.M., Reid, K.
-
Modelling the impact of fishery by-catches on albatross populations
parameters in the model. 3. The model used two alternative assumptions about patterns of at-sea distribution ... -catch in longline fisheries and this mortality has been implicated in the population declines. 2. We ... developed a deterministic, density-dependent, age-structured model for assessing the effects of longlining ... of wandering albatross (uniform between 30°S–60°S; proportional to the distribution of longline ...
Meeting Document : WG-FSA-01/18 : Author(s): G. Tuck, T. Polacheck (Australia), J.P. Croxall (UK) and H. Weimerskirch (France)
-
Summary of monitoring and research effort and preliminary results from the 2019 Scotia Sea krill monitoring survey with FV Cabo de Hornos
samples on the shelf north of the south Shetland islands, in the Bransfield Strait, the shelf north of the ... distribution were dominated by two modes, one of very large animals averaging around 55 mm dominating in the ... Association of Responsible Harvesting Companies (ARK) and manned with personnel from the Institute of Marine ... Research to carry out a significant part of the 2019 Scotia Sea large scale krill monitoring. All sections ...
Meeting Document : WG-EMM-2019/46 : Author(s): G. Skaret, M. Martinussen, G. McCallum, R. Pedersen, J. Rønning, A.L. Donoso, O.A. Bergstad and B.A. Krafft
-
Otolith chemistry reveals local population structure of Antarctic toothfish (Dissostichus mawsoni) within the CCAMLR Subarea 48.6
and economical value and that distributed in the high latitude of the Southern Ocean. The CCAMLR ... unknown in this regions, which hampered the understanding on population dynamics of this species and the ... management of toothfish fishery. The chemistry in the otolith can often be used to distinguish population ... structure of fish. In order to understand the local population structure of D. mawsoni in different research ...
Meeting Document : WG-FSA-18/75 : Author(s): L. Wei, G.P. Zhu, S. Somhlaba, X.Y. Yu and M. Duan
-
Entanglement of Antarctic fur seals (Arctocephalus gazella) by man made debris at Bird Island, South Georgia, during the 2005 winter and 2005/06 breeding season
reported here. Two entanglements were observed in the winter, a decrease of 60% from the previous year, and ... the lowest number seen since records began in 1990. One of these involved a male pup entangled in ... individual involved. In contrast there was double the number of observed entanglements during summer of 2005 ... made up the majority during the summer, in contrast to previous years. The majority (63%) of summer ...
Meeting Document : SC-CAMLR-XXV/BG/13 : Author(s): Delegation of the United Kingdom