Результаты поиска
-
PROPOSAL FOR AN EXTENSION TO THE MARK–RECAPTURE EXPERIMENT TO ESTIMATE TOOTHFISH POPULATION SIZE IN THE SOUTH OF SUBAREA 48.4
fishing season with the aims of providing the data required for assessments of the population structure ... tagged D. mawsoni were recaptured in the first season. 3. Macrourids and rajids dominated finfish bycatch ... with discard weights at 19% and 0.8% of toothfish catches, respectively. These rates are similar to ... experiment in the South of Subarea 48.4 in 2009/10 with a combined catch limit of 75 tonnes for Dissostichus ...
Meeting Document : WG-FSA-09/18 : Автор(ы): J. Roberts and D.J. Agnew (United Kingdom)
-
DISTRIBUTION OF KRILL AT THRESHOLD DENSITIES SUITABLE FOR FISHING IN THE ATLANTIC SECTOR: ANALYSIS OF THE 2000 SYNOPTIC SURVEY DATA
shelf SSMUs in terms of the frequency of 1nm integration units with krill densities above and below a ... integration units where the threshold density for fishing was set at 100 gm2 following Kasatkina (2003). 3 ... . This was also true with other threshold values in the range 25 to 200 gm2 although the difference was ... with those that affect the behaviour and performance of the fishery. Author(s): S. Hill and D. Agnew ...
Meeting Document : WG-EMM-08/16 : Автор(ы): S. Hill and D. Agnew (United Kingdom)
-
OTOLITH CHEMISTRY REFLECTS FRONTAL SYSTEMS IN THE ANTARCTIC CIRCUMPOLAR CURRENT
Bank; 2) Mn/Ca enrichment associated with South America; 3) Sr/Ca linked to the presence of Circumpolar ... eddies may account for affinities with neighbouring sampling areas, bringing water from the Subantarctic ... with depth and improved cross-validation by 14%, giving 85% classification rates to South American and ...
Meeting Document : WG-FSA-08/P04 - Abstract : Автор(ы): J.R. Ashford, A.I. Arkhipkin and C.M. Jones
-
Statistical problems in krill stock hydroacoustic assessments
issue of patchy years vs more even distribution would seem to have more impact on ecosystem management ... biomass present in an area, but rather how it is distributed. The issue of patchy years vs more even ... the target strength employed is later refined or revised, these acoustic estimates may be corrected ... be in conflict with optimum distribution of effort for statistical sampling methods. Zooplankton ... and nekton populations are seldom, if ever, random in their distribution with respect to the sampling ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 301–309 : Автор(ы): Macaulay, M.C.
-
Seabird by-catch in the Patagonian toothfish longline fishery at the Prince Edward Islands: 1997–1998
predominated (96%), followed by giant petrels Macronectes spp. (3%), with Yellow-nosed Mollymawks Thalassarche ... ), with Author(s): P.G. Ryan and M.G. Purves (South Africa) Title: Seabird by-catch in the Patagonian ... bycatch during the year July 1997-June 1998. Data on seabird bycatches were obtained from fishery ...
Meeting Document : WG-FSA-98/42 : Автор(ы): P.G. Ryan and M.G. Purves (South Africa)
-
Dissostichus eleginoides у о-ва Херд (Участок 58.5.2)
in the age range 3 to 8 years used from other surveys (see WG-FSA-96/38). The 2000 survey was also ... -FSA-04/76, the assessment was run with the updated recruitment series and with just ages 3–7 (i.e ... Density (n km–2) Survey year Area (km2) Age 3 Age 4 Age 5 Age 6 Age 7 Age 8 1990 ... the spawning stock biomass in the final year of the 35-year projection. 3. Choose the lower of the ...
Document : Site Section: Publications
-
Growth and Natural Mortality of Yellowfin Notothenia Patagonotothen guntheri shagensis from Shag Rocks Shelf
six various methods ranged from 0.63 to 1.06. With mean value of M, age and length at optimum ... exploitation were 2.5 years and 12.5 cm, respectively. Author(s): V.I. Shlibanov (USSR) Title: Growth and ...
Meeting Document : WG-FSA-89/18 : Автор(ы): V.I. Shlibanov (USSR)
-
Variability and predictability of Antarctic krill swarm structure
) echosounder, concurrent with net sampling. The acoustic data were analysed through applying a swarm ... 1 swarms were generally small (< 50 m long) and were not very tightly packed (< 10 ind m-3 ... and large and superswarms within the type 2 group. A minor group (swarm type 3) was also found ... over the survey grid was examined with respect to a number of potential explanatory variables ...
Meeting Document : WG-EMM-10/P10 : Автор(ы): G.A.Tarling, T. Klevjer, S. Fielding, J. Watkins, A. Atkinson, E. Murphy, R. Korb, M. Whitehouse and R. Leaper
-
Отчет о промысле в 2015 г: Поисковый промысел видов Dissostichus на Участке 58.4.2
tagged fish) to achieve a stock assessment within a time period of 3 to 5 years. These catch limits are ... estimates from areas with assessed fisheries and are not more than 3–4% of the estimated stock size. 9 ... -03 Bird mitigation In accordance with CM 25-02. Limit of three (3) birds per vessel during daytime ... with a new fishery for grenadier (Macrourus spp.). In 2003, the fishery for Dissostichus spp. in ...
Document : Site Section: Publications
-
Surface exchange between the Weddell and Scotia Seas
transport pathways between the eastern Antarctic Peninsula and sites of elevated chlorophyll in the Scotia ...
Meeting Document : WG-EMM-14/P03 : Автор(ы): A.F. Thompson and M.K. Youngs
Страницы
- « первая
- ‹ предыдущая
- …
- 270
- 271
- 272
- 273
- 274
- 275
- 276
- 277
- 278
- …
- следующая ›
- последняя »