Результаты поиска

1. Potential impacts of bottom trawling on benthic communities in Prydz Bay, Antarctica

   examine a potential impact of bottom trawling on benthic communities in this region. The benthos was ... examined in trawls at 14 of the 22 random stations providing representative samples from different areas in ... most abundant taxa in terms of biomass. The wet-weighed ratio of benthos to finfish in the codend was ... demonstrate that the biomass of benthos that could be disturbed by commercial bottom trawling could be high in ... Australia in the 1990/91 season. The data collected are used to examine a potential impact of bottom ... trawling on benthic communities in this region. The benthos was examined in trawls at 14 of the 22 random ... sponges and ascidians. Holothurians and crinoids were the next most abundant taxa in terms of biomass ... . The wet-weighed ratio of benthos to finfish in the codend was greater than 1 at 12 out of the 14 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 403–410 : Автор(ы): Constable, A.J.

2. Statistical power to detect changes in growth rates of Antarctic fur seal pups

   changes (between years) in pup growth rates, the loss of power associated with obtaining weight samples on ... only three dates in a season, and potential means of increasing the power of the CCAMLR Ecosystem ... Method (50 pups of each sex, weighed on four dates at 28-day intervals) would result in the ability to ... detect a 17% change in the growth rate with a 10% chance of committing Type 1 or Type 2 errors. If only ... ) in pup growth rates, the loss of power associated with obtaining weight samples on only three dates ... in a season, and potential means of increasing the power of the CCAMLR Ecosystem Monitoring Program ... % change in the growth rate with a 10% chance of committing Type 1 or Type 2 errors. If only three samples ... number of pups weighed in a season, by decreasing the time between weighings. Resume Des simulations ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 399–409 : Автор(ы): Boveng, P., J.L. Bengtson and M.E. Goebel

3. Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997

   of considerable value in interpreting the results from ecosystein assessments such as that in ... Paper Title:  Variations in condition indices of mackerel icefish at South Georgia from 1972 to ... predominantly on krill. An index of condition which uses the ratio of the measured total mass to the estimated ... mass is shown to provide a good indicator of local krill density. The index is likely to be little ... interpreting the results from ecosystein assessments such as that in progress under the auspices of CCAMLR ... by the Convention for the Conservation of Antarctic Marine Living Resources. An index of condition ... to be related to the amount of krill available to C. gi~i~izari in the sampled region (Everson et ... . The Inass of the viscera will vary mostly due to the amount of food contained in the stomach and ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Автор(ы): Everson, I. and K.-H. Kock

4. Midwater trawl catchability in relation to krill and possible ways of assessing gross catch

   the basis of data obtained from AtlantNIRO expeditions from 1983 to 1990 in the Scotia Sea. A ... Paper Title:  Midwater trawl catchability in relation to krill and possible ways of assessing ... methodology was developed for and applied to determining the rate of krill filtration through the trawl rope ... and netting and also the probability that krill will come into contact with various parts of the net ... in the Elephant Island area (January, 1985) were as follows: • mean depth of swarm distribution, H ... . The rational development of the kriU fishery hinges on the conservation of the Antarctic marine ... when it comes to solving the task in hand. The authors of this work have attempted to examine the ... process of krill fishing and the way the catch is formed in the trawl and also to devise approaches to ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 87–113 : Автор(ы): Zimarev, Yu.V., S.M. Kasatkina and Yu.P. Frolov

5. Marine mammals and demersal longline fishery interactions in Crozet and Kerguelen Exclusive Economic Zones: an assessment of depredation levels

   whales. These two species, alone or in co-occurrence with each other, were observed in 71% of the 1 308 ... two species, alone or in co-occurrence with each other, were observed in 54% of the 6 262 longlines ... monitored. Interactions were observed in all fishing areas. The effect of depredation was assessed by ... comparing catch-per-unit-effort (CPUE) (fish/weight/hook) of each longline set in the absence/presence of ... to compare the mean CPUE in different combina- tions of marine mammal species observed within each ... , mean CPUE was lower in the presence of sperm whales than it was when no marine mammals were present ... or in co-occurrence with each other, were observed in 71% of the 1 308 longlines set. In the ... in co-occurrence with each other, were observed in 54% of the 6 262 longlines monitored ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 67–82 : Автор(ы): Roche, C., C. Guinet, N. Gasco and G. Duhamel

6. Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in Australian sub-Antarctic trawl fisheries

   McDonald Islands (Division 58.5.2) in 1992 and 1993. The range of estimated ages was 4 to 25 years. There ... Paper Title:  Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in ... operations in the Heard Island region in 2000. The length at first maturity (L 50) was 418 mm (total length ... Australian sub-Antarctic trawl fisheries Abstract / Description:  Estimates of age and growth were obtained ... Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR). In some areas the macrourid ... sub-Antarctic waters of the Southern Ocean (Iwamoto, 1990). They are commonly caught as by- catch in ... information on the life history and abundance of these species. In particular, age, growth and reproductive ... the adoption by CCAMLR in 2002 of anal length as the standard length measurement for macrourids. In ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 139–151 : Автор(ы): van Wijk, E.M., R. Williams and A.J. Constable

7. Major fishery events in Kerguelen Islands: Notothenia rossii, Champsocephalus gunnari, Dissostichus eleginoides – current distribution and status of stocks

   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 ... . The SKALP first surveys (1987 and 1988), despite bias in the protocols, revealed the poor state of ...

   Meeting Document : WS-MPA-11/P04 : Автор(ы): G. Duhamel, P, Pruvost, M. Bertignac, N. Gasco and M. Hautecoeur

8. Assessments of by-catch in trawl fisheries at Heard and MacDonald Islands

   the spawning biomass of these stocks in the longer term. The long-term annual yield for each of the ... literature. The second part of the analysis examined the amount of each species caught in the commercial ... operations, the nature of the trawl operations in which they were caught and the effectiveness of current by ... -catch provisions in CCAMLR to ensure the status of these species is not affected by these fisheries. The ...

   Meeting Document : WG-FSA-97/30 : Автор(ы): de la Mare, W.K., Williams, R., Constable, A.

9. Overview of global trade in toothfish (Dissostichus spp.)

   imports globally have seen an increase of 16.08% and exports have seen an increase in 15.54%. The average ... USA as still the largest importer of quantity (29.72%), but a prevalence of imports in Southeast Asia ... GLOBEFISH unit, an analysis was conducted for the five-year period of 2012–2016 on the global trends of the ... . Captures the global trade of toothfish. The analysis showed that over this five-year period quantity of ...

   Meeting Document : CCAMLR-XXXVI/BG/05 Rev. 1 : Автор(ы): CCAMLR Secretariat

10. Atlas of coastal sea ice in eastern Antarctica

    of Mawson, at Edmonson Point in the vicinity of the Italian Station of Terra Nova Bay and at Ross ... Island. The atlas is scheduled for release in August 2002. Here we provide a sample only of the contents ... penguins at Bechervaise Island and cover the period September to the following March in each of the seasons ... Abstract:  The attached document provides information on an atlas of sea ice produced by the n. It ...

    Meeting Document : WG-EMM-02/54 : Автор(ы): K. Michael, K. Hill, K. Kerry and H. Brolsma (Australia)

Страницы