Resultados de la búsqueda
-
Results of E.L. Holmberg 1995 fish survey in Subarea 48.3
aggregation of stations in a nested ANOVA model. An increase over last year039;s values was observed in the ... presence of krill aggregations in larger quantities than in last years survey. Author(s): Marschoff, E ... Abstract: The survey comprised 48 bottom trawl hauls taken in subarea 48.3. About 80% of the ... comparison between both cruises. Of these, 20 hauls were located at less than 0.5 miles and 11 between 0.5 ...
Meeting Document : WG-FSA-95/35 : Autor(es): Marschoff, E., Madirolas, A., Balestrini, C., Tossonotto, G., Gonzalez, B., Calcagno, J.
-
A brief outline of the biology of the Antarctic silverfish, Pleuragramma antarcticum Boulenger, 1902 (Nototheniidae) from the Antarctic Indian Ocean
4-7 years of age. The potential absolute and relative fertility of this species is one of the ... three relatively isolated groups. Fish aged from 0+ to 3+ years live in the epi- mesopelagic zone where ... there are macro aggregations of plankton, while fish aged from 3+ to 12+ years form near-bottom, pelagic ... when they reach 13-16 cm in length and 4-6 years of age. Males reach maturity at 12-18 cm in length and ...
Meeting Document : WG-FSA-92/11 Rev. 1 : Autor(es): V.V. Gerasimchuk (Ukraine)
-
TROPHIC OVERLAP OF WEDDELL SEALS (LEPTONYCHOTES WEDDELLI) AND ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA, ANTARCTICA
further away (Testa et al. 1985). • Direct information on diet of the Weddell seals, including diver ... observations, animal-mounted camera information, and observations from field scientists in the McMurdo Sound ... January, it is plausible but unproven that they are an important prey item. Author(s): M.H. Pinkerton, A ... prey) will vary between different life history stages at different times of the year in different areas ...
Meeting Document : WG-EMM-08/43 : Autor(es): M.H. Pinkerton, A. Dunn and S.M. Hanchet (New Zealand)
-
Status of krill target strength
cause of bias in single-animal measurements, namely thresholding. Theoretical estimates for the target ... dependence of target strength on both animal size and transmit frequency, notwithstanding admitted ... shortcomings. Some recent single-animal measurements of target strength for live euphausiids and euphausiid ... are applicable to a wide range of lengths, acoustic frequencies, and orientation parameters. Author(s ...
Meeting Document : WG-KRILL-92/11 : Autor(es): K.G. Foote (Norway), D. Chu and T.K. Stanton (USA)
-
The direct impact of fishing and fishery-related activities on marine life in the CCAMLR Convention Area with particular emphasis on longline fishing and its impact on albatrosses and petrels – a review
Abstract: Finfishing started in the Southern Ocean more than 30 years ago at South Georgia and ... Iles Kerguelen. The fishery extended further south for a few years in the second half of the 1970039 ... local and killed probably only a few animals per year. Author(s): Delegation of Germany Title: The ... ;s. However, South Georgia and the Kerguelen Islands remained the most important fishing grounds ...
Meeting Document : SC-CAMLR-XIX/BG/11 : Autor(es): Delegation of Germany
-
Possible effects of different levels of fishing on krill on predators - some initial modelling attempts
Meeting of the CCAMLR039;s WG-Kril1 and WG-CEMP in 1992 to address this issue. First. estimates are made ... breeding success patterns for certain krill predator species. A "one-way" interaction model is ... merit discussion at the forthcoming WG-Kril1 and WG-CEMP meetings. A formalism for a "two-way" ... , but computations based on this approach are deferred pending clarification of the Questions raised ...
Meeting Document : WG-KRILL-93/43 : Autor(es): D.S. Butterworth and R.B. Thomson (South Africa)
-
Results of E.L. Holmberg 1997 fish survey in Subarea 48.3
this species in the whole subarea 48.3, is dominated by younger fish (less than two years). Four years ... Abstract: The survey comprised 51 bottom trawl hauls taken in subarea 48.3. Of these, one was ... discarded due to net damage. About 80% of the hauls were taken in the shelf of South Georgia Islands (41 ... and below: 99.07% at the South Georgia Islands and 98.57 % at Shag Rocks. Author(s): Prenski, B ...
Meeting Document : WG-FSA-97/47 : Autor(es): Prenski, B., Calcagno, J., Marschoff, E.R., Gonzalez, B.
-
Length-age composition of the Patagonian toothfish, Dissostichus eleginoides, from the Kerguelen Island area
this period were located in the west shelf area (48°30’- 49°30’S and 66°50’- 67°20’E). Total catch was ... concentrated in the north shelf area (47°10’- 47°30’S and 66°50’- 67°20’E). Total catch was about 5.2 x 103 ... fluctuate considerably, mean fish length was 76.0- 86.6 cm. Fish of two to 14 years old age groups were most ... abundant in catches, mean age was 8.2- 9.8 years. In the 1991/92 season fishing for the species was ...
Meeting Document : WG-FSA-92/08 : Autor(es): V.G. Prutko and V.N. Chikov (Ukraine)
-
Effect of orientation on broadband acoustic scattering of Antarctic krill Euphausia superba: implications for inverting zooplankton spectral acoustic signatures for angle of orientation
and video footage from several Antarctic krill were carried out to determine the effect of animal ... Classification (CMVC) approach, using generic and animal-specific theoretical and empirical model spaces. The ... animal-specific empirical model space was best able to invert for angle of orientation. The CMVC ... orientation based on broadband echoes from individual zooplankton in the field. Author(s): L.V. Martin ...
Meeting Document : WG-EMM-99/41 : Autor(es): L.V. Martin Traykovski (USA), R.L. O’Driscoll (New Zealand) and D.E. McGehee (USA)
-
Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2002 winter and 2002/03 breeding season
years, most individuals observed entangled in debris were juveniles (88% of winter and 81% of summer ... observations), the reasons for this are discussed. Of the entanglements where the animal could be sexed, males ... the potential to entangle wildlife at sea. Author(s): Delegation of the United Kingdom Title ... reported here. The overall number of entanglements showed a decrease from last year of 55% in winter and 67 ...
Meeting Document : SC-CAMLR-XXII/BG/11 : Autor(es): Delegation of the United Kingdom