Resultados de la búsqueda
-
Movement, growth and available abundance to the fishery of Dissostichus eleginoides Smitt, 1898 at Heard Island, derived from tagging experiments
Patagonian toothfish (Dissostichus eleginoides) in different sectors of the Southern Ocean are considered to ... these data. The bulk of the data show that fish disperse only a very short distance, up to 15 n miles in ... most cases, from their point of release. This may be explained in part because of the concentration of ... resident during their phase in the depth range of the fishing grounds, but they move on once they approach ... ) in different sectors of the Southern Ocean are considered to be genetically distinct. However, in ... ). Movement, growth and trends in fi sh abundance are examined using these data. The bulk of the data show ... release. This may be explained in part because of the concentration of fi shing in the established ... grounds, which makes recaptures more likely in the same place as marking. The concentration of effort ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 33–48 : Autor(es): Williams, R., G.N. Tuck, A.J. Constable and T. Lamb
-
Dynamics of Notothenia rossii rossii size-age structure on the Kerguelen Islands shelf
. In May-June 1991 the mean length was 59.2 cm, mean age was 7.4 years; some 70% of catch consisted of ... Islands shelf in the period from 1970 to 1991, dynamics of size- age structure of marbled rockcod ... used to characterise the age composition. It was determined that in the initial years of exploitation ... a result of fisheries, the share of the fish spawning for the first time increased considerably in ...
Meeting Document : WG-FSA-94/04 : Autor(es): P.B. Tankevich (Ukraine)
-
Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)
variability and the wide range of biomass values obtained which in turn leads to uncertainty in interpreting ... variability in the scale of krill swarms and to attempt to determine more reliable values of its biomass after ... in a month. It also usually decreases in spring, regardless of the type of water circulation. Annual ... differences in krill biomass are undoubtedly associated with the volume of krill brought here by waters of the ... biomass bearing in mind the vertical distribution characteristic of euphausiids. Mean biomass was also ... and the wide range of biomass values obtained which in turn leads to uncertainty in interpreting kriU ... in the scale of krill swarms and to attempt to determine more reliable values of its biomass after a ... eight times in a month. It also usually decreases in spring, regardless of the type of water ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Autor(es): Latogursky, V.I., R.R. Makarov and L.G. Maklygin
-
The migration patterns of Electrona carlsbergi (Tåning, 1932)
component for E. carlsbergi, is undergoing rapid development. In various areas of the SPFZ and in all ... of age, indicating dominance by a single cohort. Moreover, a very similar size composition in the ... specimens in the Subantarctic zone, classified as a breeding area, decreases to 20-40%, while the number of ... mature specimens 8.5-11 cm in length and 3-5 years old increases. Based on the dynamic processes of the ...
Meeting Document : WG-FSA-93/18 : Autor(es): A.N. Kozlov (Russia)
-
The breeding biology and distribution of Adelie penguins: adaptations to environmental variability
Research (LTER) study of the effects of environmental variability on animal populations in the Antarctic ... of Adelie penguins in the Southern Ocean are variability in sea ice cover, ocean circulation patterns ... concluded that Adelie penguins have discrete subpopulations in the northeastern and southwestern regions of ... each is within several hundred kilometers of predictable pack ice areas in the Weddell and ...
Meeting Document : WG-EMM-96/58 : Autor(es): Fraser, W.R., Trivelpiece, W.Z.
-
Diet of grey-headed albatrosses at the Diego Ramírez Islands, Chile: ecological implications
. The squid Martialia hyadesi predominated in the diet samples in 2001 and 2002 (89% and 81% of ... suggests that M. hyadesi plays an important role in the breeding performance of grey-headed albatrosses at ... reconstituted mass), but was absent from the 2000 samples. Reconstituted mean mass per sample in 2000 was ... Abstract: The diet of grey-headed albatrosses at Diego Ramírez, Chile, was analyzed and compared ...
Meeting Document : WG-FSA-04/12 : Autor(es): J. Arata (Chile), G. Robertson (Australia), J. Valencia (Chile), J.C. Xavier (UK) and C.A. Moreno (Chile)
-
CEMP cameras and satellite transmitters installation by Ukraine at the Galindez, Petermann, and Yalour Islands penguin colonies as a part of CEMP Fund projects
Network in Subarea 48.1' and 'Tracking the overwinter habitat use of krill dependent predators ... Abstract: In the report we inform shortly on the activity in the Ukrainian Vernadsky Antarctic ... Station area on service of CEMP cameras and installation ARGOS satellite tags in penguin colonies as part ... of the CEMP projects run by USA, Argentina, Poland and Ukraine 'Establishing a CEMP Camera ...
Meeting Document : WG-EMM-17/21 : Autor(es): G. Milinevsky, I. Dykyy, D. Lutsenko, O. Savitsky, A. Simon, M. Telipska, V. Lytvynov and L. Pshenichnov
-
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 : Autor(es): 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 : Autor(es): 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 : Autor(es): G.A. Daneri, A.R. Carlini (Argentina) and P.G.K. Rodhouse (United Kingdom)