Resultados de la búsqueda
-
The diet of the Antarctic fur seal Arctocephalus gazella at Harmony Point, Nelson Island, South Shetland Islands
Abstract: The diet of juvenile and non-breeding male Antarctic fur seals Arctocephalus gazella ... was investigated at Harmony Point, Nelson Island, South Shetland Islands, by the analysis of 18 and 33 ... (50.2%). The importance of the remaining taxa represented in the samples (octopods, hyperiids and ... bivalves) was negligible. Among fish, Myctophiids represented 85.2% of the fish mass, being Gymnoscopelus ...
Meeting Document : WG-EMM-97/60 : Autor(es): Carlini, A., Baroni, A., Casaux, R.
-
A way forward in the multivariate analysis of Antarctic predator, prey and environment indices: predator-environment interactions at Seal Island
components of the antarctic ecosystem, and to distinguish between changes due to the harvesting of commercial ... , which effectively predicts chinstrap success given sea-ice data with an R2 of 0.914. This model is then ... used to propose a method of distinguishing between effects of environmental variation and harvesting on ... short time series now available, and provides a way forward in the analysis and interpretation of the ...
Meeting Document : WG-EMM-96/27 : Autor(es): Agnew, D.J., Watters, G., Hewitt, R.
-
Analysis of the stomach content in the blue-eyed shag Phalacrocorax atriceps bransfieldensis at Nelson Island, South Shetland Islands
Abstract: Forty stomach contents of the blue eyed shag Phalacrocorax bransfieldensis were sampled ... at Nelson Island, South Shetland Islands, in January 1994. The analysis of the diet showed that fish ... number (47%). The comparison with data published on pellets analysis of shags from the same colony gave ... field, it reduces the errors arose from the examination of regurgitated casts, like erosion by digestion ...
Meeting Document : WG-CEMP-94/31 : Autor(es): N. Coria, R. Casaux, M. Favero and P. Silva (Argentina)
-
Possible approaches to the evaluation of the Antarctic krill mortality
Abstract: Parameters of the Bertalanfy growth equation for 1928 and 1970–1976 were calculated on ... the base of summaryed data on Krill age groups singled out using method of Harding.Parameters obtained ... recources. As a result of uncertainty in age groups determination were obtained wide ranging values. The ... most real values varied from 0.75 to 1,17. No fishery impact on various parameters of the krill ...
Meeting Document : WG-KRILL-92/08 : Autor(es): L.G. Maklygin and V.I. Latogursky (Russia)
-
Status and trends of Adelie penguin populations in the Ross Sea region
Abstract: Aerial reconnaissance and photography were used in the Ross Sea sector of Antarctica to ... determine the breeding locations of Adé1ie penguins Pygoscelis adeliae, and to count the numbers of nests ... Adé1ie rookeries are now known from the region, with a total of about 1,082,1300 breeding pairs – almost ... half the world population. Some rookeries were photographed in all, or most, of the seven seasons to ...
Meeting Document : WG-CEMP-92/23 : Autor(es): R.H. Taylor, P.R. Wilson and B.W. Thomas (New Zealand)
-
Feeding of nine Antarctic fish species and their daily ration evaluations
Abstract: Feeding patterns of four Nototheniid, three Channichthyiid and two Bathydraconiid ... carded out in the Cosmonauts Sea (67°50 S- 41°25 E) in March 1988. The type of food consumed by ... mainly of Euphausiids; T. centronotus is a benthophage feeding mainly on Gammarids and Polychaetas, T ... diet volumes of the species studied varied from 1 to 4% of their body weight while annual volumes ...
Meeting Document : WG-FSA-91/08 : Autor(es): Ye. A. Pakhomov and V. B. Tseitlin (USSR)
-
Accumulation of stranded plastic objects and other artefacts at Inaccessible Island, central South Atlantic Ocean
Abstract: During 1987 a survey of macro-artefacts (>10 mm diameter) was conducted along a 900 ... m boulder beach at the western point of Inaccessible Island, central South Atlantic Ocean. This ... repeated the survey made at the same site during 1984, when the highest density of artefacts at the Tristan ... Inaccessible Island. The minimum rate of artefact accumulation was 88 objects km-1 year-1. Total numbers of ...
Meeting Document : CCAMLR-VII/BG/04 : Autor(es): P.G. Ryan and B.P. Watkins (South Africa)
-
Preliminary Results of a Bottom Trawl Survey Around Elephant Island in October and December 1987
Abstract: A total of 40 bottom trawl hauls was carried out fromboard RV "Polarstern" in ... proportion of larger (= older) fish in the catches increased. Composition of the catches of C. gunnari ... shelf areas of the Peninsula region. Author(s): K.-H. Kock (FRG) Title: Preliminary Results of a ...
Meeting Document : WG-FSA-88/31 : Autor(es): K.-H. Kock (FRG)
-
Revised estimates of the biological parameters for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea
Abstract: This report updates the estimates of the biological parameters for Antarctic toothfish ... (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B). We present revised estimates of the ... -data for plausible estimates of the steepness parameter of the stock-recruitment relationship and ... recruitment variability of Antarctic toothfish. Author(s): A. Dunn, P.L. Horn and S.M. Hanchet (New Zealand ...
Meeting Document : WG-FSA-SAM-06/08 : Autor(es): A. Dunn, P.L. Horn and S.M. Hanchet (New Zealand)
-
The recent decline in recruitment of Gobionotothen gibberifrons in the South Shetland Islands (CCAMLR Subarea 48.1)
Abstract: Commercial exploitation of fish stocks around Elephant Island and the lower South ... Shetland Islands ceased after the 1989/90 season. One of the larger and most abundant species in the area ... perturbations on a fish stock by recruitment failure as one of them. Data from the 1980’s and 1990’s (1983, 1985 ... recruitment of G. gibberifrons was normal. Recruitment began to decline substantially at the turn to the 2000 ...
Meeting Document : WG-FSA-12/20 : Autor(es): K.-H. Kock (Germany) and C.D. Jones (USA)