Résultats de la recherche
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Survey of Antarctic fur seals in the South Shetland Islands, Antarctica, during the 1986/87 austral summer
Paper Title: Survey of Antarctic fur seals in the South Shetland Islands, Antarctica, during the ... 1986/87 austral summer Abstract / Description: A survey of Antarctic fur seals in the South Shetland ... . Twelve fur seal pupping sites were identified, some of which had not previously been reported. The ... largest pupping sites are at Telmo Island and Cape Shirreff, on the north coast of Livingston Island ... the north coast of Livingston Island. Total fur seal pup production in the South Shetland Islands in ... harvested and nearly exterminated in the 19th century. In the 1930's small numbers of fur seals (tens of ... were begun in the South Georgia vicinity, the number of pups born at Bird Island and South Georgia ... rookeries suitable as potential monitoring sites in the land-based network of the CCAMLR Ecosystem ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 427-440 : Auteur(s): Bengtson, J.L., L.M. Ferm, T.J. Härkönen, E.G. Schaner and B.S. Stewart
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Some aspects of the relation between Antarctic krill abundance and CPUE measures in the Japanese krill fishery
Paper Title: Some aspects of the relation between Antarctic krill abundance and CPUE measures in ... -swarm density. Search time data may be needed to assess the density of swarms in a concentration, but ... may be difficult to record in practice, and a number of other factors may complicate any analysis. The ... the Japanese krill fishery Abstract / Description: The history of the Japanese krill fishery is ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 109–125 : Auteur(s): Butterworth, D.S.
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Brief report of the joint Soviet-Australian expedition of the USSR FRV Professor Mesyatsev to the Australian fishing zone around the territory of Heard and McDonald Islands, May-August, 1987
austral winter. Stability of the aggregation is discussed in relation to the environmental conditions. The ... Paper Title: Brief report of the joint Soviet-Australian expedition of the USSR FRV Professor ... Mesyatsev to the Australian fishing zone around the territory of Heard and McDonald Islands, May-August ... , 1987 Abstract / Description: The results of the first joint Soviet-Australian expedition to the AFZ ... females and 0.3% for males . Of the analysed fish, 80% had food present in their stomach. The mean ... in relation to the environmental conditions. The unique character of Heard's population of C. ~ari ... outcome of the investigations in the Australian Fishing Zone around Heard and McDonald Islands; its ... purpose is to present concisely the results and a preliminary analysis of these results in order to ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 75-103 : Auteur(s): Gherasimchook, V.V., V.N. Brodin, A.V. Kljausov, I.B. Russelo, P.V. Tishkov and N.B. Zaremba
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Preliminary results of investigations of the Federal Republic of Germany on Notothenia rossii marmorata (Fischer, 1885) in January/February 1985
probably still less than 10% of the pristine stock, Mean length in the catches has only slightly increased ... consisted of age classes V – VIII. It seems doubtful if the conservation measures adopted in 1984 will ... Paper Title: Preliminary results of investigations of the Federal Republic of Germany on ... further basic data needed for stock assessment purposes, to assess the actual size of Notothenia rossii ... than 10% of the pristine stock, Mean length in the catches has only slightly increased since 1981/82 ... less Lhan l O 7, of the pristine stock ,=stimated by EVERSON (1977) b. Mean lengl:h in the catches ... - 150 m, 151 - 250 m and 251 - 500 m based on data in EVERSOX (198Li). The number of hauls was ... allotted in proportion of the area of each depth stratum and weiihtc!cl- by the abl1ndance fro,!1 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 33-57 : Auteur(s): Kock, K.-H.
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The error of the biomass estimate as a function of survey parameters and the statistics of a density field of krill aggregations
the dependence of relative sampling error in a biomass estimate (from a survey) on the statistical ... Paper Title: The error of the biomass estimate as a function of survey parameters and the ... characteristics of the fish concentration density field and on parameters of the survey itself, have been derived ... with the help of mathematical statistics and methods of calculus of probabilities. The biomass estimate ... error in a biomass estimate (from a survey) on the statistical characteristics of the fish ... parameters. The relationships described here can be used in practice for both a posteriori estimation of ... ecological meaning, it is necessary to supply them with ,confidence intervals indicating the limits of ... nature of the estimate in question. If such a dependence has been revealed, it would be possible to ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 213-228 : Auteur(s): Kizner, Z.I.
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Trends in relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, South Shetland Islands, after commercial fishing in the area
continued at Potter Cove from 1991 to 1999, and at Harmony Cove, Nelson Island, in the austral summer of ... 1995/96. Still evident is the decline in trammel-net catches of fjord-dwelling Notothenia rossii and ... relative abundance of this species and G. gibberifrons are well below those found in the early 1980s. These ... Paper Title: Trends in relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons ... ), conservation measures have been adopted in order to assist the recovery of these species by banning directed ... , Nelson Island, in the austral summer of 1995/96. Still evident is the decline in trammel-net catches of ... the diet of the piscivorous Antarctic shag (Phalacrocorax bmnsfieldensis) in the South Shetland ... -Antarctic Peninsula area in this decade. The decrease in recruitment to the inshore sub-populations of N ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 43–52 : Auteur(s): Barrera-Oro, E.R., E.R. Marschoff and R.J. Casaux
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Characteristics of krill aggregations in the South Sandwich Islands subarea in January–February 2000
Paper Title: Characteristics of krill aggregations in the South Sandwich Islands subarea in ... characteristics of some 2 400 krill swarms detected in the study area were sized acoustically and are described in ... biomass is shown. About 64% of the krill biomass was concentrated in krill swarms in the upper 80 m depth ... January–February 2000 Abstract / Description: During the survey of Subarea 48.4 from 17 January to 1 ... . 9 (2002): 145–164 145 CHARACTERISTICS OF KRILL AGGREGATIONS IN THE SOUTH SANDWICH ISLANDS ... detected in the study area were sized acoustically and are described in this paper. Results of ... in Subarea 48.4 INTRODUCTION The study of krill aggregation patterns and schooling behaviour is ... very important, not only in studies of krill ecology, but also in the management of krill fi sheries ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 145–164 : Auteur(s): Kasatkina, S.M., A.P. Malyshko, V.N. Shnar and O.A. Berezhinsky
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Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken in the South Georgia area in 1990
the status of the Champsocephalus gunnari stock in the South Georgia area. In February 1990 the size ... 9+ were present in catches. Two peaks in size composition correspond with fish of the 1987 and 1985 ... in the South Georgia area in 1990 Abstract / Description: In January/February 1990 the UK and the ... Paper Title: Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken ... RV Hill Cove and RV Akademik Knipovich to study the status of the ChampsocephaZus gunnari stock in ... the South Georgia area. In February 1990 the size composition of catches taken by Akademik Knipovich ... . Since Champsocephalus gunnari is one of the most abundant fish species exploited in the Antarctic, it ... the C. gunnari stock in the South Georgia area. Investigations of the size composition of catches ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 285–293 : Auteur(s): Kochkin, P.N.
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Results of a longline survey on seamounts in the southeast Atlantic and in Subarea 48.6 and Division 58.4.4
Paper Title: Results of a longline survey on seamounts in the southeast Atlantic and in Subarea ... although this trend may be confounded by the presence of local seabed features, and juvenile fish in nearby ... vary from 1:1. Females accounted for 70% of individuals of more than 90 cm in total length. The stratum ... October and 1 December 1997, and several seamounts were surveyed to the south of Africa: close to the ... RESULTS OF A LONGLINE SURVEY ON SEAMOUNTS IN THE SOUTHEAST ATLANTIC AND IN CCAMLR SUBAREA 48.6 (ATLANTIC ... ) and in the CCAMLR region (Shona and Spiess seamounts, the western slope of Bouvet Island, Ob and Lena ... confounded by the presence of local seabed features, and juvenile fish in nearby shallow water. The sex ... . Females accounted for 70% of individuals of more than 90 cm in total length. The stratum with the highest ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 99–116 : Auteur(s): López Abellán, L.J. and J.F. González Jiménez
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Observation of seabirds in the Southern Ocean in 1988/89
Paper Title: Observation of seabirds in the Southern Ocean in 1988/89 Abstract / Description ... : This paper examines the numerical and species distribution of birds in the sub-Antarctic area of the ... study period are discussed as is the wide variability of numerical and species distribution in each ... Southern Ocean to the south of 60°S. Thirty minute observations were made daily during daylight hours at 8 ... WG-CEMP-90/33 OBSERVATION OF SEABIRDS IN THE SOUTHERN ... species distribution of birds in the sub-Antarctic area of the Southern Ocean to the south of 600 S ... the wide variability of numerical and species distribution in each oceanic sector of Antarctica ... the RV Akademik Fedorov. 2. METHOD OF OBSERVATION Observations were made while the vessel was in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 521–542 : Auteur(s): Vagin, A.V. and V.V. Popov