Результаты поиска
-
Managing ecosystem uncertainty: critical habitat and dietary overlap of top-predators in the Ross Sea
Abstract: We summarize three types of data in order to increase appreciation among fishery ... managers of the close spatial and temporal ecological overlaps among top predators in the Ross Sea Shelf ... ): killer whale (type C), Weddell seal, Emperor penguin, Adélie penguin, and 4 species of flighted birds ... coast of Victoria Land from 1990 through 2004, we summarize the foraging ranges from these sites and the ...
Meeting Document : WG-EMM-06/29 : Автор(ы): Testa, J.W., Stewart, B.S., Olmastroni, S., Lyver, P., Karl, B., Eastman, J., Barton, K., Ballard, G., Toniolo, V., Wilson, P., Ainley, D.
-
Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands derived from a long-term monitoring program (1983–2006) at Potter Cover
Abstract: The long term monitoring program of demersal fish at inshore sites of the South ... Shetland Islands has continued at Potter Cove from 2000 to 2006, covering a continuous sampling period of ... decline in trammel net catches of fjord fishes of the species Notothenia rossii and Gobionotothen ... the period 1983-1999, is still evident. At Potter Cove, despite an overall increasing trend of N ...
Meeting Document : WG-FSA-06/25 : Автор(ы): E.R. Barrera-Oro and E.R. Marschoff (Argentina)
-
Size at maturity and histological procedures explored to determine spawning activity of female Dissostichus mawsoni from samples collected from the Ross Sea in January 2004, December 2004 and January 2005
the 2003/04 and 2004/05 commercial fishing seasons in the Ross Sea to improve estimates of size of ... samples of toothfish less than 80 cm and over 120 cm total length were obtained. The first part of the ... study used classic histological techniques to classify ovary stages by the most advanced state of oocyte ... development visible in histological sections of the 2003/04 samples. Using this methodology, it is ...
Meeting Document : WG-FSA-05/63 : Автор(ы): M.E. Livingston and P. Grimes (New Zealand)
-
Proposal for the removal of night setting requirement for autoline vessels fishing in Division 58.5.2
fishing in Division 58.5.2 to occur at any time of the day/night cycle. The proposal forms part of an ... adaptive approach to management, which considers the risk status of the fishery, knowledge on the ... effectiveness of mitigation measures, mitigation performance record of the vessel, seabird mortality levels and ... assessment of the likely effects of individual mitigation measures to total mitigation response. Since the ...
Meeting Document : WG-FSA-04/73 : Автор(ы): G. Robertson and B. Baker (Australia)
-
Foraging areas of black-browed and grey-headed albatrosses breeding on Macquarie Island in relation to marine protected areas
-order predators, there is a paucity of data that can be used to evaluate their efficacy in achieving ... this purpose. 2. We assessed the effectiveness of a network of MPAs around Macquarie Island in the ... Southern Ocean by examining the foraging areas of black-browed and grey-headed albatrosses that were ... breeding on the Island. 3. During late incubation and brood periods over 90% of time spent foraging by ...
Meeting Document : WG-FSA-04/49 : Автор(ы): A. Terauds, R. Gales, G.B. Baker and R. Alderman (Australia)
-
Comparative studies on the biological and acoustical properties of krill aggregations (Euphausia superba Dana) samples during the XIII Italian Expedition to the Ross Sea (December 1997–January 1998)
(December-January 1997-98), for biological validation of hydroacoustic recordings, 35 net samplings were ... carried out. For all hauls both parameters: biological (length AT, sex and maturity stage of the gonads of ... the Euphausia superba) and acoustical (differences in volume back-scattering strength of krill ... aggregations MVBS at 38, 120 and 200 kHz) were examinated. Comparing the depth of the net and acoustic ...
Meeting Document : WG-EMM-00/39 : Автор(ы): M. Azzali, J. Kalinoswki, G. Lanciani and I. Leonori (Italy)
-
Major fishery events in Kerguelen Islands: Notothenia rossii, Champsocephalus gunnari, Dissostichus eleginoides – current distribution and status of stocks
Abstract: The large-scale trawl exploitation targeting virgin stocks of marbled notothenia ... fishing fleet of the fishing grounds in the early 1970’s. The fishery shifted to icefish (Champsocephalus ... banks resulted in the sharp decline in the catches of marbled notothenia. The creation of the French EEZ ... in 1978 closed the free fishery but did not stop the reduction of the biomass of exploited stocks ...
Meeting Document : WS-MPA-11/P04 : Автор(ы): G. Duhamel, P, Pruvost, M. Bertignac, N. Gasco and M. Hautecoeur
-
Dynamics of Notothenia rossii rossii size-age structure on the Kerguelen Islands shelf
Abstract: Basing on materials of research expeditions and fishing cruises to the Kerguelen ... 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 ... of the stock, the major part of catches (more than 80%) was formed by repeated spawning fish. then as ...
Meeting Document : WG-FSA-94/04 : Автор(ы): P.B. Tankevich (Ukraine)
-
REVIEW OF CCAMLR ACTIVITIES ON MONITORING MARINE DEBRIS IN THE CONVENTION AREA
Abstract: CCAMLR Members monitor beached debris, entanglement of marine mammals, marine debris ... associated with seabird colonies and animals contaminated with hydrocarbons at a number of sites, primarily ... in Area 48. Overall non-fishing debris items (mostly packaging items) have made up the majority of ... debris reported from monitoring sites. Relatively large amounts of fishing items have been reported at ...
Meeting Document : WG-IMAF-09/08 : Автор(ы): Secretariat
-
INVESTIGATING LENGTH AT MATURITY OF ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) BASED ON SCIENTIFIC OBSERVERS’ DATA
Abstract: Through generalised linear models, the gonadosomatic index of Antarctic toothfish in ... the Ross Sea region was shown to vary with latitude, length and month. Limitations of the scientific ... observers’ staging data were highlighted and GSI is recommended as a better indicator of maturity status in ... Antarctic toothfish. Reports of histological analyses of a small number of Antarctic toothfish showed ...
Meeting Document : WG-FSA-08/48 : Автор(ы): S. Mormede, S. Parker and P. Grimes (New Zealand)
Страницы
- « первая
- ‹ предыдущая
- …
- 370
- 371
- 372
- 373
- 374
- 375
- 376
- 377
- 378
- …
- следующая ›
- последняя »