Результаты поиска

1. ANTARCTIC TOOTHFISH STOCK ASSESSMENT IN DIVISION 58.4.1 ON THE BASIS OF CATCH AND CPUE DATA

   toothfish stock biomass in the Ross Sea. As a result of implementation of an age-structured and a dynamic ... Abstract:  An attempt to use reported catch and CPUE data based on data of observers in the ... assessment of Antarctic toothfish stock in Division 58.4.1 is made. Unlike some previous results obtained for ... of carrying capacity for this stock is found to be about 29000 t. Initial stock biomass is estimated ...

   Meeting Document : WG-FSA-09/14 Rev. 1 : Автор(ы): D. Vasilyev, K. Shust, A. Petrov, V. Tatarnikov and I. Istomin (Russia)

2. Growth rates of Antarctic fur seals as indices of environmental conditions

   mass at age in each year compared to the multi-year mean, that was not dependent on assumptions of ... growth rates in years of low krill availability. Biases reflecting changes in the component of the ... population available for sampling appear to invalidate the widely held assumption that inter-annual ...

   Meeting Document : WG-EMM-01/20 : Автор(ы): K. Reid (United Kingdom)

3. Report of the 1995/96 Japanese Whale Research Programme Under Special Permit in the Antarctic (JARPA) in Area IV and eastern part of Area III

   eastern part of Area In (south of 60° S between 35°E and 70°E). The survey was conducted for 118 days ... , and samples were taken during an early and late period of the feeding season in order to study intra ... -seasonal changes. During the sampling, one animal was taken randomly from schools sighted as primary ... , along an independent sighting track line. Sighting and sampling activities were independently conducted ...

   Meeting Document : WG-EMM-96/48 : Автор(ы): Yuzu, S., Ishikawa, H., Mogoe, T., Kawasaki, M., Hishii, T., Shimamoto, K., Tohyama, D., Nibe, H., Taguchi, F., Hidaka, H., Ono, K., Yamashiro, K., Yoshida, T., Tamura, T., Nishiwaki, S.

4. Annual variation in the timing of reproduction in Antarctic fur seals (Arctocephalus gazella) at Bird Island, South Georgia

   , which is less synchronous within years than female arrival, was significantly later in 1987 than in any ... usually started when 80% or more of potential territory sites were occupied by males. Cows arrived ... other year. Female arrival, estimated by pup birth date where necessary, was highly synchronous: it ...

   Meeting Document : WG-CEMP-90/39 : Автор(ы): C.D. Duck (United Kingdom)

5. Management of C. gunnari in Subarea 48.3

   ecosystem than we have at present. There is therefore a need for an interim approach to setting ... precautionary catch limits for this fishery. An approach based on the general yield model is described, which ... increased consumption of icefish by Antarctic fur seals in years of poor krill availability. Thus natural ... mortality of icefish may, in some years, increase by a large factor (assumed here to be 4) declining to ...

   Meeting Document : WG-FSA-97/38 : Автор(ы): Kirkwood, G.P., Parkes, G.B., Everson, I., Agnew, D.J.

6. A proposal methodology to assess the Patagonian toothfish stock abundance at CCAMLR Subarea 48.3 using ASPM

   Abstract:  The ASPM is an integrated modeling technique used in stock assessment of different D ... information sources, such as catch and age and size data from fishing fleet, surveys and others abundance ... 48.3 shows an acceptable fit to CPUE series and catch-length-proportions (WG-FSA-SAM 05/5 and WG-FSA-05 ... /73). In this paper the methodology and assumptions for the 2006 TOP assessment at CCAMLR Subarea 48.3 ...

   Meeting Document : WG-FSA-06/59 : Автор(ы): O.C. Wöhler and P.A. Martínez (Argentina)

7. A RE-ANALYSIS AND UPDATE OF THE ANTARCTIC KRILL BIOMASS IN THE SOUTH SHETLAND ISLANDS, THROUGH 2011

   -based estimates of krill density and recruitment are recalculated for the years 1996 through 2011 ... based data show that 2011 was a year of good recruitment, following two years of low recruitment. Krill ... . Recent changes in the acoustic methodology and target strength models are the basis for the recalculation ... . The time series of acoustic biomass indicate that krill have varied by more than an order of magnitude ...

   Meeting Document : WG-EMM-11/26 : Автор(ы): A. Cossio, C. Reiss and R. Driscoll (USA)

8. Foraging location and range of white-chinned petrels Procellaria aequinoctialis breeding in the South Atlantic

   covered at night (47%) was the same. Mean (31- 34 km/h) and maximum (80 km/h) flight velocities were ... extensively. Most locations were between 30° to 55 °W and 52 °to 60 0W around South Georgia/Shag Rocks and ...

   Meeting Document : WG-FSA-99/20 : Автор(ы): S.D. Berrow, A.G. Wood and P.A. Prince (United Kingdom)

9. Krill population dynamics at South Georgia 1991–1997, based on data from predators and nets

   biomass in the following year. Similar recruitment failure in the same years is evident in krill ... scientific nets from the same area over the summers of 1991-1997. In comparing the 5 years with both predator ... in 1991 and 1994, both years of low krill biomass at South Georgia. In both of these years large ... and thereafter increased steadily to 1997. Using these data in conjunction with putative size/age ...

   Meeting Document : WS-AREA 48-98/15 : Автор(ы): K. Reid, J. Watkins, J. Croxall and E. Murphy (UK)

10. Proposals on standardization of toothfish resource research

    efforts  by years and research blocks  do not allow obtaining scientific-based  data for understanding the ... discussed in the context of discussion at the Scientific Committee and the CCAMLR Commission in 2018 ... accompanied by standard procedures for trawl adjusting and monitoring of its parameters. These procedures are ... mandatory for all ships participating in the survey. At the same time, methodological aspects of the multi ...

    Meeting Document : WG-SAM-2019/34 : Автор(ы): S. Kasatkina

Страницы