Résultats de la recherche
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A preliminary investigation of the possible effects of rhizocephalan parasitism on the management of the crab fishery around South Georgia
captures the main characteristics of the system. An age-based host-parasite model is constructed ... reduce the effective spawning stock biomass, and this clearly has implications for stock management. The ... possible implications of parasitism for management are investigated by considering a population model that ... , incorporating two scenarios for the stock-recruit relationship of the host: (i) resilience; and (ii) sensitivity ... 60 80 100 120 Time (years) Figure 7: Prevalence and spawning stock ratios over time for a ... - recruit relationship was used. 0 20 40 60 80 100 120 Time (years) Figure 8: Prevalence and spawning ... animals only. The sensitive stock- recruit relationship was used. 0 20 40 60 80 100 120 Time (years ... considering a population model that captures the main characteristics of the system. An age-based host ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 175–192 : Auteur(s): Basson, M
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e-imaf-00 report.pdf
... catch into summer and winter components. Three alternative splits (80:20, 70:30 and 60:40) were used ... Conservation Measure 190/XVIII which contained an exemption from night-setting requirements for vessels south ... vessels complied with line weighting for Spanish longline systems (6 kg every 20 m). The median weight ... Fishing Seasons 7.61 Last year the Commission decided that the timing of the fishing season for
application/pdf attached to:WG-IMAF-00 ad hocMeeting Report : WG-IMAF-00 ad hoc
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e-sc-vi-a6.pdf
... 1989/90). A summary of this information for 1987/88 is found in Appendix A. Information such as this ... . Preliminary plans for the 1987/88 season have been developed for complementary studies on krill ecology (age ... APPENDIX B LONG-TERM PROGRAM OF WORK FOR ME SCIENTIFIC COMMITTEE B/1 1987/88 1988/89 1989/90 1990/91 ... fish data and establish CCAMLR data base by establishing formal requirements for reporting age and
application/pdf attached to:WG-LTP-87Meeting Report : WG-LTP-87
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e-cc-xx-a4.pdf
... audit on those for 2000, so it was noted that either a full audit or a review audit would be acceptable ... daily basis on the amount outstanding until all amounts due from the Member for the year are received ... payable at the same time as the Member’s contribution for the following year. After much debate, the ... independent review be conducted in time for the next meeting in order to decide on a possible modification
application/pdf attached to:SCAF-01Meeting Report : SCAF-01
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The role of fish as predators of krill (Euphausia superba) and other pelagic resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)
: Krill forms an important part of the diet of many Antarctic fish species. An understanding of the role ... when these areas were exploited commercially for Electrona carlsbergi. Currently, the best estimates of ... by mesopelagic fish in the Atlantic sector of the Southern Ocean. It is clear from this review that ... Southern Ocean. Ecosystem models therefore need to account for their role. However, several key areas of ... estimates of fish stocks were available for the split-years (1 July to 30 June) 1975/76 and 1977/78 (Table ... resource for skates and slope and deep-sea fishes such as grenadiers at certain times of the year ... fast ice, including flaws, leads and polynyas) for most of the year (Kock, 1992). The shelf and ... pro- vided in Table 4. Non-myctophid species The only other species of mesopelagic fish for which ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 115–169 : Auteur(s): Kock, K.-H., E. Barrera-Oro, M. Belchier, M.A. Collins, G. Duhamel, S. Hanchet, L. Pshenichnov, D. Welsford and R. Williams
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e-sc-xxvi-a5.pdf
... 58.5.2 for several years, using a double-tagging method consistent with that proposed for the Year of ... approaches for estimating total removals of toothfish................ 312 Review of historical trends in ... published only in electronic format. For these reports, please refer to www.ccamlr.org/pu/e/e_pubs/fr ... . Inputs for stock assessment Catch-at-length/age from fisheries 3.22 Scientific observers on board
application/pdf attached to:WG-FSA-07Meeting Report : WG-FSA-07
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e-sc-xii-a6.pdf
... “recruitment”. For krill, recruitment into the population refers to krill reaching one year of age ... results (for four years) compared with appropriate data from a 15-year data series on birth mass and ... data were higher in every year (and significantly so for male pups in all years and for female pups in ... of data collection and analysis. An outline standard method already exists for this parameter in
application/pdf attached to:WG-CEMP-93Meeting Report : WG-CEMP-93
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Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island, South Georgia during the 2000 winter and the 2000/01 breeding season
reported here. The number of entanglements showed an increase from recent years, with 20 entanglements ... injuries accounted for 35% of entanglements over winter and 23% during the summer. As in previous years ... Georgia for the eleventh consecutive winter (2000) and thirteenth consecutive summer (2000/01) are ... fur seal population. Entanglements reported over summer were also up 57% on the previous year. Severe ...
Meeting Document : SC-CAMLR-XX/BG/03 : Auteur(s): Delegation of the United Kingdom
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e-sc-xxx-a05.pdf
... -at-age data, and an updated tag-loss estimate as in WG-SAM-11/18. There are also plans for a ... -11/20). The model was an age-structured, multi-fishery, single-area and -sex model. 3.12 The ... Kim for his warm welcome, and MIFAFF and NFRDI for hosting the meetings. Later, during an initial ... Group noted Russia’s intention to produce an identification guide for crabs in the southern Atlantic
application/pdf attached to:WG-SAM-11Meeting Report : WG-SAM-11
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Distribution of krill (Euphausia superba Dana) catches in the South Shetlands and South Orkneys
catch in Subarea 48.1 from December to March was taken within 40 km of the coast, and 90% within 80 km ... , foraging ranges and population sizes from the literature are used to show that for some years catches ... South Orkneys Abstract / Description: A set of concentric zones of 20 km width was defined around ... . Krill catches in these zones are shown to have a consistent pattern in Subarea 48.1 but an unpredictable ... for Subareas 48.1 and 48.2. 100 90 80 .c. 70 J:! tfJ 0 () 50 -0 40 a-e 30 20 10 ... March was taken within 40 km of the coast, and 90% within 80 km in all years 1988 to 1991. In 1987 ... was similar for each of the years examined whereas that for Subarea 48.2 changed each year (Figures 3 ... effectuee a moins de 40 km de la cote, et 90% a moins de 80 km de 1988 a 1990. En 1987 et 1988, de decembre ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 287–303 : Auteur(s): Agnew, D.J.