Résultats de la recherche
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Analysis of the diet of Champsocephalus gunnari at South Georgia in late summer from 1994 to 1997, Dr Eduardo L. Holmberg surveys
two species in the diet of C. gunnari was reversed. The consumption of other prey items such as mysids ... well as fish, was only occasional or negligible and varied from year to year. The spatial distribution ... /without food in Subarea 48.3, did not show a consistent pattern from year to year. Likewise, in the four ... and Thysanoessa sp., which are known to be important alternative food in years of krill scarcity, as ... : the dietary coefficient (Q%) showed a greater importance of T. gaudichaudii (75-80%) than krill (20 ... of the SG shelf (south of 54'55's) in February 1995 and in March/April 1997. At one station in this ... empty stomachs predominated in the north-western region of the SG shelf (around 54"05'S, 38"30'W in ... fish (ranges 12-20 cm/l-2 years) was found in the catches during the RV Dr Eduardo L. Holmberg ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 103–123 : Auteur(s): Barrera-Oro, E., R. Casaux and E. Marschoff
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e-sc-xxxi-a06.pdf
... distribution between 2 and 0.8) and ‘high mortality’ (M = 3). CVs of either 0%, 10%, 20% or 30% were added to ... serially correlated over time, with good recruitment periods of a year or two occurring on approximately a ... , including the outcomes from two technical workshops held earlier in 2012. 1.3 The pre-release version of ... /05, Table 5). 2.2 Two vessels used the continuous fishing system (Saga Sea and Thorshøvdi, now
application/pdf attached to:WG-EMM-12
Meeting Report : WG-EMM-12
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The effect of temporal variability on power analysis predictions for Adélie penguin CEMP parameters at Béchervaise Island
or decreases larger than 2% each year with more than 80% power. Increasing the duration of the ... parameter and the likely response of parameters such as arrival or fledgling weights are two of these issues ... (5.2 – 6.7%). For example, with a 10 year monitoring program it is possible to detect fixed increases ... to 10 years duration. Author(s): L.M. Emmerson and C. Southwell (Australia) Title: The effect of ...
Meeting Document : WG-EMM-03/49 : Auteur(s): L.M. Emmerson and C. Southwell (Australia)
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Volume 24: CCAMLR. 2012. Statistical Bulletin, Vol. 24 (2002–2011). CCAMLR, Hobart, Australia.
December of one year to 30 November of the following year). The abbreviated notation for CCAMLR seasons ... which the export or re-export was authorised. Weights reported as exported and re-exported in one year ... re-export weights for the two most recent years, may also be incomplete. These statistics will be ... СОХРА N PARA LA CO ON FO IC MA ATISTI LLETIN СТИЧЕ OLETIN VO (20 E CONSERVAT A CONSERVA АНЕНИЮ ...
Document : Site Section: Publications
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On the instantaneous natural mortality rate of Champsocephalus gunnari, South Georgia (Subarea 48.3)
composition of catches from 1964/65 to 1968/69 and the age/length key for the first half of 1972 were used in ... . The following two procedures were used to calculate the age structure of the catches. The first ... : where nl a a1 a2 = = = number of fish aged a of length I in the key; minimum age of fish of ... Georgia Area (Subarea 48.3). WG-FSA-90/28. Hobart, Australia: CCAMLR. pp. 22. 319 Table 1: Age ... determined using two procedures for calculations. Age 1964/65 1966/67 1967/68 1968/69 1964-69 1964-69 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 313–326 : Auteur(s): Frolkina, G.A. and R.S. Dorovskikh
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e-cc-xxii-a4.pdf
... individual Member in respect of a single year, a single species group and one subarea/division. For the ... full audit should be performed on average once every two years, and in 1995 that this would be ... noted that the report of WG-FSA had substantially increased this year, an increase not anticipated or ... discussions from the previous year (CCAMLR-XXI, Annex 4, paragraph 25), and information presented by the
application/pdf attached to:SCAF-03
Meeting Report : SCAF-03
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Use of indices of predator status and performance in CCAMLR fishery management
of likely operational constraints on fisheries. File: 20-Croxall.pdf ... last year and with average(s) of previous years. Determine level of statistical significance of ... situation within two to three decades (as required by Article 11 of the Convention). We should also ... environment, evidence for short-term changes (year-to-year differences or trends over three to five years ... Management Strategies? I believe that there are at least two main reasons for doing this. First, in the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 353–365 : Auteur(s): Croxall, J.P.
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A survey of fish stocks in the Heard Island and McDonald Islands region in the 1999/2000 season and a comparison of the abundances of selected species with those obtained in previous surveys
, varying by a factor of 2-3 between years, but C. gunnari abundance can vary by a factor of about 20 ... between years. This is the result of occasional strong year classes entering the fishery and dominating ... Heard Island Plateau and Shell Bank. Abundances and length density plots of these species plus two ... the population for about 2 years before disappearing, as has been documented in other locations ...
Meeting Document : WG-FSA-00/40 : Auteur(s): R. Williams, A. Constable, T. Lamb and E. van Wijk (Australia)
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Fishery Report 2014: Champsocephalus gunnari South Georgia (Subarea 48.3)
gunnari) grow rapidly to a maximum size of 55 cm, reaching a marketable size of 30 cm in three years ... of 90 mm. In recent years, the catch limit for this fishery has been between 1 500 and 5 000 tonnes ... season is represented by the year in which that season ended, e.g. 2014 represents the 2013/14 CCAMLR ... fishing season (from 1 December 2013 to 30 November 2014). FISHERY REPORT 2014: CHAMPSOCEPHALUS ...
Document : Site Section: Publications
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An acoustic survey of Antarctic krill on the South Georgia shelf, CCAMLR Subarea 48.3, in January 1992
ship039;s speed exceeded 7 knots and when the ship was over the shelf around the main island of South ... other scatterers. A threshold at one frequency was used to remove noise and any echoes too weak to be ... backscattering strength at the two frequencies into a) echoes from krill-sized scatterers and smaller and b ... . An overall mean for daytime transects was 95 g m-2. Author(s): Everson, I., Goss, C. Title: An ...
Meeting Document : WG-EMM-96/42 : Auteur(s): Everson, I., Goss, C.