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Preliminary assessment of mackerel icefish, Champsocephalus gunnari, on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003
approximately 20% of the 2002 estimate. This decline in abundance is consistent with the passage of the strong ... of un-assessed cohorts and provide for more stable catches between fishing years, while meeting the ... objectives of Article II. Comparison of yield estimates between Mathcad and Generalised Yield Model (GYM ... fulfills the objectives of Article II and is robust against the uncertainties inherent in the stock ...
Meeting Document : WG-FSA-03/32 : Autor(es): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)
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e-sc-xxxv-a07.pdf
... biomass after two years. 3.22 The Working Group recommended that the Scientific Committee consider a ... harvest control rule, which ensures 75% biomass escapement after a two-year projection period, yielded a ... considered one year of fishing only, yielded a catch limit of 14 474 tonnes in 2016/17. 3.10 The Working ... rule, which ensures 75% biomass escapement after a two- year projection period, yielded a catch limit
application/pdf attached to:WG-FSA-16
Meeting Report : WG-FSA-16
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Population dynamics of black-browed and grey-headed albatrosses Diomedea melanophris and D. chrysostoma at Bird Island, South Georgia
categories delaying one further year (even when still paired). Grey-headed Albatrosses are essentially ... Island, South Georgia for 17 consecutive years (1975-1991). Over this period almost all the Grey-headed ... ) decreased. Black-browed Albatrosses follow an annual breeding cycle, with over 80% of birds successful in ... biennial, Author(s): Delegation of United Kingdom Title: Population dynamics of black-browed and grey ...
Meeting Document : SC-CAMLR-XII/BG/21 : Autor(es): Delegation of United Kingdom
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Fishery Report: Champsocephalus gunnari Heard Island (Division 58.5.2)
. Weighted Frequency (proportion of the catch) Le ng th (c m ) 10 20 30 40 50 1996/97 1997/98 1998 ... biomass to below 75% of the level that would occur in the absence of fishing within the two years ... 80 0 465 20 120 5 50 2003/04 6 150 0 80 1 360 3 120 1 50 2004/05 34 150 0 80 0 360 5 120 3 50 2005 ... for C. gunnari, starting at 2.5 years and fully selected at age 3. Recruitment 14. The short-term ...
Document : Site Section: Publications
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New data on spawning, hatching and growth of the Kerguelen Islands Champsocephalus gunnari shelf stock
Abstract: Combined studies on the inner shelf and outer shelf of the Kerguelen islands (1989/90 ... annual cohort. Strong differences in abundance of larvae are observed yearly. One cohort seems dominant ... in the samples along the study. It would explain the previouly observed three years cycle. Spawners ... spawning during the winter 1991/ Author(s): G. Duhamel (France) Title: New data on spawning, hatching and ...
Meeting Document : WG-FSA-94/9 Rev. 1 : Autor(es): G. Duhamel (France)
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KRILL DENSITY ESTIMATES IN CCAMLR SUBAREA 48.6 BASED ON ACOUSTIC DATA COLLECTED DURING JANUARY–MARCH 2008
continuously on six frequencies along one west-east and two south-north transects between latitudes 50 and 66.4 ... S in the sparsely studied CCAMLR subarea 48.6. The mean density of Antarctic krill, integrated to ... distributed. The majority of the detected krill was distributed between 40 and 80 m depth, and approximately ... 14 % was distributed within a 100 x 100 km core area centered around the Bouvetøya. Author(s): G ...
Meeting Document : WG-EMM-09/45 : Autor(es): G. Skaret, B.A. Krafft and R. Korneliussen (Norway)
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Aerobic dive limit: how often does it occur in nature?
animal is it’s aerobic dive limit (ADL). The ADL has only been measured in a few species. The goal of ... , deeper diving females made longer dives that approached or exceeded the cADL (P Author(s): D.P. Costa ...
Meeting Document : WG-EMM-00/48 : Autor(es): D.P. Costa, N.J. Gales and M.E. Goebel (USA)
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Modelling variability and estimating power to detect change in Adélie penguin fledgling weights
year, but there was no evidence that the rate of decline differed between years. A consequence of this ... the number of birds weighed in each five-day period from 50 to 30 without substantial loss of power ... statistical models were developed from first principles and incorporated both within- and between-year ... at a single time each year, without substantial loss of power to detect change. Further modelling ... than 30 birds each year. This is the case for both one- and two-tailed tests with a power greater ... birds, or (c) 30 birds each year. Change detected for three to five years of monitoring after change ... /98, and in years 1990/91 and 1999/2000 data were obtained in only one five-day period. These years ... February) in two years, these data were excluded from modelling because their inclusion would have ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 191–200 : Autor(es): Emmerson, L.M., C. Southwell and J. Clarke
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Volume 13: CCAMLR. 2001. Statistical Bulletin, Vol. 13 (1991–2000). CCAMLR, Hobart, Australia.
Statistical Bulletin covers data for the 10 years from 1 July 1990 to 30 June 2000. Figures in Section D ... ended on 30 June 1991). The abbreviated notation for split-years used in the title and figures refers ... from 1 July to 30 June of the following year (e.g. the split-year 1990/91 started on 1 July 1990 and ... Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) has as one of its functions ...
Document : Site Section: Publications
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Volume 14: CCAMLR. 2002. Statistical Bulletin, Vol. 14 (1992–2001). CCAMLR, Hobart, Australia.
of the Statistical Bulletin covers data for the lO years from 1 July 1991 to 30 June 2001. Figures ... and ended on 30 June 1992). The abbreviated notation for split-years used in the title and figures ... -year from 1 July to 30 June ofthe following year (e.g. the split-year 1991192 started on 1 July 1991 ... Volume The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) has as one ...
Document : Site Section: Publications