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1. Estimates of fish stock biomass around South Georgia in January/February 1985

   fishery is dependant on the abundance of the recruiting year class. Conservation measures adopted by ... reduction in stock size to 10 – 20% of that estimated before the onset of heavy fishing. In C. gunnari the ... CCAMLR in 1984 are discussed. Their effect on a recovery of the stocks seems, however, doubtful. File ... direc- t ed fishing for the species for two years on the premises of a normal recruit- ment. Minimum ... recruitment of one or two abundant year - 9 - classes. The dependance of the fishery on the a bund ance ... & BUREAU, 1984, table 50). 3.4 Champsocephalus gunnari Except for one haul yield i ng 1. 4 t/30 min ... in stock size to 10 - 20 % of that estimated for 1975/76. Similar values had, however, been found ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/2 (Selected Scientific Papers, SC-CAMLR-SSP/2) : 1-32 : Автор(ы): Kock, K.-H.

2. Directed research. Antarctic Marine Living Resources (AMLR). A program development plan

   research vessel capable of operating in Antarctic waters for a period of 180 days each year. Note: The full ... program providing information needed for US policy regarding the conservation and management of the marine ... in the Commission and Scientific Committee of the Convention for the Conservation of Antarctic Marine ... Living Resources (CCAMLR), which established the system for managing the living resources of the ... , was signed into law by President Reagan on November 8, 1984, implementing the CCAMLR for the United ... (AMLR) Program is a national program providing information needed for U.S. policy regarding the ... for the Conservation of Antarctic Marine Living Resources (CCAMLR), which established the system for ... fleets has already contributed to the overexploitation of Antarctic fish stocks. In the 50 years ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 363-373 : Автор(ы): Office of Science and Technology, NMFS, NOAA, US Department of Commerce (USA)

3. Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?

   the sink rates of IW longlines. Time-depth recorders were deployed on lines set with and without a ... depth of longlines for given distances astern. This increase in depth is minor and unlikely to result in ... tension several metres astern (depending on sea state) and at an angle to the sea surface. Tension ... ) programmed to record depth at 0.5 m resolution every second. The TDRs were attached to the longline on 30 ... structure. For each of these last two sub-models, separate variance parameters at each depth were combined ... increasing the sink rates of IW longlines. Time-depth recorders were deployed on lines set with and without ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 107–114 : Автор(ы): Robertson, G., J. Williamson, M. McNeill, S.G. Candy and N. Smith

4. Differentiation of independent populations of Antarctic krill

   :  Several countries have recently shown an interest in commercial krill fishing. An understanding of krill ... circulation. On the basis of the review, it is suggested that there is probably one composite population of E ... present, at least six stable cyclonic water circulations can be found and at least two or three of them ... may be habitats of independent krill sub-populations. A proposal is given for future studies into ... which two or three are large-scale (Beklemishev, 1969) and, consequently, may serve as habitats for ... -to-year and seasonal fluctuations ; 6. study of the causes of fluctuation 7. setting up of an ... INDEPENDENT POPDLATIONS OF ANTARCTIC KRILL D.S.S.R. Abstract Several countries have recently shown an ... interest in commercial krill fishing. An understanding of krill population structure is needed to ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 275-281 : Автор(ы): USSR

5. Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic

   the fishing effort on the different grounds, although some ‘hotspots’ for interactions were noted ... , were present during 5% of haul observations. A high inter-vessel variation was noted for interactions ... of unrecorded fish removals on stock assessment models, modifications in the behaviour of marine ... vicinity of vessels during hauling had an impact on catch rates. For these analyses the catch rates of ... hauling site. Observers reported that when vessels steamed away for between 20 and 30 n miles, killer ... the fi shing effort on the different grounds, although some ‘hotspots’ for interactions were noted ... hooked on longlines. Other mitigation measures include the weighting of gear for a faster sink rate and ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Автор(ы): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins

6. Growth and natural mortality of Patagonian rockcod (Patagonotothen guntheri shagensis) from Shag Rocks shelf

   for Patagonian rockcod (Patagonotothen guntheri shagensis) were calculated by using age and length ... of natural mortality M=0.8 was used in calculations and the optimal age and length for harvesting ... Patagonian rockcod were found to be 2.5 years and 12.6 cm. File:  09-Shilbanov.pdf ... years The analysis of the age composition curve shows that not all two year old fish were represented ... the optimal age and length for harvesting Patagonian rockcod were found to be 2.5 years and 12.6 cm ... of 2 to 5 years are most abundant. Sexual maturity is attained by fish at 11 to 13 cm length, 20 to ... 30 g weight and age of 2 to 3 years. The sex ratio of fish is actually the same in all size classes ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 111–121 : Автор(ы): Shlibanov, V.I.

7. Fish stock assessment survey in Subarea 48.3

   reduction. No commercial fishing on Champsocephalus gunnari has been reported from the area. It is suggested ... previous year and is not an artefact of the sampling technique or survey design. 30 Further evidence ... considerable interest for many years mainly because this area has formed the focus for much of the commercial ... the south of the centre of South Georgia. These three rectangles, numbers 19, 20 and 24 on Figure 1 ... standard haul duration of 30 minutes with the net on the bottom was used. However if the net came fast, or ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 25–67 : Автор(ы): Everson, I., G. Parkes, K.-H. Kock, S. Campbell, Z. Cielniaszek and J. Szlakowski

8. Differences in distribution and population structure of krill (Euphausia superba) between penguin and fur seal foraging areas near Seal Island

   at a deeper range from 50 to 100 m in the day while at a shallower range from 20 to 50 m at night. In ... ..' .::', .. .. ····<····2·0·00 m 200 m Figure 2: Subsurface (30 to 35 m depth) currents derived from the paths of two ... ;, () 20 30 40 50 60 ~~~~~ ~ ~~~~£1 " " " " Body length ( mm ) Maturity stages Figure 5: Body length and ... , tending to be at a deeper range from 50 to 100 m in the day while at a shallower range from 20 to 50 m at ... 50 a 100 m de jour alors qu'il frequente une couche moins profonde, de 20 a 50 m de nuit. Au large ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 273–285 : Автор(ы): Ichii, T., H. Ishii, J.L. Bengtson, P. Boveng, J.K. Jansen and M. Naganobu

9. Myctophids in the diet of Antarctic predators

   the present study is to review published data on the diet of various top predators (birds, seals ... review covers publications for the period since 1984-85 to the present. In total, over 50 publications ... contained some information on the myctophid component of the diet of Antarctic predators. Myctophids were ... - seven, Bathydraconidae- two and Rajidae- one), 18 species of birds (penguins- seven, albatrosses- four ... mentioned above. In total, over 50 publications contained some information on the myctophid component of ... the APF area data on myctophids came from sub-Antarctic islands and two shallow banks (Ob and Lena ... diet is largest on Heard and Macquarie Islands. On Marion Island an unknown amount of P. tenisoni is ... myctophids. On Marion Island the winter diet (September) comprised 70% fish by weight and 30% crustaceans ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 335–368 : Автор(ы): Sabourenkov, E.

10. A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South Georgia

    on density data derived from acoustic surveys and on length-frequency data obtained from either ... target or station net hauls is described. This composite index is compared with an index where density ... successful recruitment year due to krill spawned in 1994/95. File:  06watkins.pdf ... recruitment index is dependent on the separation of krill into year classes. This is not an easy task and an ... factors provide an extra level of complication when deciding on the appropriate year classes. The ... Programme has carried out systematic net hauls at up to eight stations within each of two boxes on the ... per haul have been measured the numbers were left as raw numbers. Here I consider two methods for ...

    Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 71–84 : Автор(ы): Watkins, J.L

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