Résultats de la recherche
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Fishery Report: Champsocephalus gunnari South Georgia (Subarea 48.3)
Frequency (proportion of the catch) Le ng th (c m ) 10 20 30 40 50 1986/87 1987/88 1988/90 1989/90 ... vessel catching 20 seabirds to cease fishing. Carry forward Observers Each vessel to carry at least one ... and end dates) 1 Dec–30 Nov Reference date (Start growth eriod) p 1 Dec Weight-at-age (kg ... maturity occurs 0 mm Age 0 Maturity 1 Spawning season Start–End date 30 Nov–30Nov Fishery ...
Document : Site Section: Publications
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Supplementary data on exploited stocks in Division 58.5.1 (Kerguelen)
tonnes per fishing hour) is, however, lower than those observed for the two preceding cohorts (1979 and ... abundance of the two stocks is observed, taking into account the fact that these are juvenile fish of age ... from the Kerguelen Shelf from 1979/80 to 1988/89. S: Southern sector SE: Southeastern sector 161 ... observed for the two preceding cohorts (1979 and 1982) in a comparable period. The stock of Notothenia ... . INTRODUCTION After two seasons (1986/87 and 1987/88) of small catches (7 910 and 850 tonnes), Division ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 147–161 : Auteur(s): Duhamel, G.
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Length-at-age in juvenile Patagonian toothfish (Dissostichus eleginoides)
observed in the length density represent different age cohorts separated by one year. File: 01ashford.pdf ... . No difference was found between predicted and estimated ages. We conclude that the two dominant modes ... Paper Title: Length-at-age in juvenile Patagonian toothfish (Dissostichus eleginoides) Abstract ... the length modes observed. Length densities by age were compared graphically with the overall length ... 50 60 70 80 90 Fr eq ue nc y 40 30 20 10 0 ... 80 0 10 20 30 40 50 60 70 80 0 10 ... 20 30 40 50 60 70 80 0 10 20 30 ... 40 50 60 70 80 0 10 20 30 40 50 ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 1–10 : Auteur(s): Ashford, J., C. Jones, S. Bobko and I. Everson
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Selected Scientific Papers, SC-CAMLR-SSP/3 (1986)
and still be followed by one year class from a lightly fished stock. If the recent period of heavy ... the CPUE Catches per species from split-year 1979/80 to 1985/86. Values of the total fishing ... . The age at recruitment is 3-4 years, hence up to two consecutive years of heavy fishing can occur ... known) and the net recruitment rate to the stock in each year implied by the age data. The catch at ...
Document : Site Section: Publications
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SC-CAMLR-SSP/4
and still be followed by one year class from a lightly fished stock. If the recent period of heavy ... the CPUE Catches per species from split-year 1979/80 to 1985/86. Values of the total fishing ... . The age at recruitment is 3-4 years, hence up to two consecutive years of heavy fishing can occur ... known) and the net recruitment rate to the stock in each year implied by the age data. The catch at ...
Document : Site Section: Publications
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SC-CAMLR-SSP/3
and still be followed by one year class from a lightly fished stock. If the recent period of heavy ... the CPUE Catches per species from split-year 1979/80 to 1985/86. Values of the total fishing ... . The age at recruitment is 3-4 years, hence up to two consecutive years of heavy fishing can occur ... known) and the net recruitment rate to the stock in each year implied by the age data. The catch at ...
Document : Site Section: The Organisation
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Timescale of ovarian maturation in Notothenia coriiceps (Richardson); evidence for a prolonged adolescent phase
for about one year. The results from a two year study at Signy Island indicate that this adolescent ... fish spawn each season. Two reproductive strategies are considered, one where adverse conditions are ... yolk deposition begins to take place. This 039;adolescent039; phase was thought originally to last ... phase lasts for about four years. There is also some evidence to indicate that not all sexually mature ...
Meeting Document : WG-FSA-93/26 : Auteur(s): Inigo Everson (United Kingdom)
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e-sc-xxiv-a5-appO.pdf
... year: Subarea 48.6, 31% (one 453 vessel) compared with 23%; Subarea 58.4, 56% (range 28–94 ... as they have not yet been analysed; these data will be submitted next year. 20. The reported ... streamer line specifications (Viking Bay) and one vessel did not comply on two specifications (Punta ... extrapolated seabird mortality was 13 birds compared with 27, 8, 27 and 30 birds in the last four years (Table
application/pdf attached to:WG-IMAF-05 ad hocMeeting Report : WG-IMAF-05 ad hoc
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Benthos: Trophic modelling of the Ross Sea
0.2–4 gDW ind-1 for shell heights between 20 and 80 mm (Heilmayer & Brey 2003). A population median ... times it is decoupled. Two types of method have been used commonly to study the benthic ecosystem of ... generic bacteria and detrital model groups. We use a definition here of megabenthos >20 mm in size ... , macrobenthos 0.5–20 mm, and meiobenthos <0.5 mm. It is unclear whether a more detailed subdivision of the ...
Document : Site Section: Publications
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Effects of recruitment variability and natural mortality on Generalised Yield Model projections and the CCAMLR Decision Rules for Antarctic krill
%, 20%, or 30% were added to the observed recruitment values. The CCAMLR "depletion" decision ... maintaining spawning biomasses above 20% of unfished biomass in more than 90% of the trials. As the values for ... below 20% of its unfished value, meeting the CCAMLR "depletion" decision rule for recruitment ... two of the four areas, Elephant Island and the Western Area, were unable to support the catch while ...
Meeting Document : WG-EMM-12/26 : Auteur(s): D. Kinzey, G. Watters and C. Reiss (USA)