Résultats de la recherche

1. Krill population dynamics at South Georgia 1991–1997, based on data from predators and nets

   scientific nets from the same area over the summers of 1991-1997. In comparing the 5 years with both predator ... biomass in the following year. Similar recruitment failure in the same years is evident in krill ... sampling the same overall krill population. Greatest similarity results from comparing net samples with ... samples from late summer (March). From the 7-year predator time-series, within-year variation was greatest ...

   Meeting Document : WS-AREA 48-98/15 : Auteur(s): K. Reid, J. Watkins, J. Croxall and E. Murphy (UK)

2. e-sc-xxxvii-a8.pdf

   ... other three years. The majority of swarms were found in the upper 100 m layer with the exception of ... backscatter ........................................................................ 284 Interaction with ... with the currently agreed krill biomass estimates across Divisions 58.4.1 and 58.4.2. This risk ... Working Group with an update to the krill fishing information for 2016/17 and 2017/18, and noted that application/pdf attached to:WG-EMM-18

   Meeting Report : WG-EMM-18

3. Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands, derived from the 2000–2006 monitoring program at Potter Cove

   early 1980s, while those of G. gibberifrons have further declined and remain close to zero. At Harmony ... was absent in the catches. These trends are consistent with those observed in scientific cruises ... sampling period of 24 years which began in 1983, and at Harmony Cove in the summers of 2001to 2003. The ... date (Epanenchikov kernel, bandwidth = 0.15), together with the observed split-year mean values. 0 ... , particularly over the last two years. These observations are consistent with results from bottom trawl ... trend of N. rossii catches from 1991 to 2006, the actual levels are half of those found in the early ... absent in the catches. These trends are consistent with those observed in scientifi c cruises studying ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 83–87 : Auteur(s): Barrera-Oro, E.R. and E.R. Marschoff

4. e-sc-xxx-a05.pdf

   ... in the case of Subarea 48.4) that was carried out over a sequence of years with a multi-year ... same time each year. (iv) Trauma index – a measure of the injuries to the fish associated with ... current B (with associated uncertainty) as they were estimated in every year of the exploratory fishery ... in a four-year experiment, assuming constant annual catches and constant tagging rates in all years application/pdf attached to:WG-SAM-11

   Meeting Report : WG-SAM-11

5. Acoustic estimates of krill abundance at South Georgia, 1981–1998

   north-eastern and north-western ends of South Georgia. In four of these years biomass was higher to the ... fluctuated widely from year to year over this time, ranging from?2 to? 150 gm-2 (wet weight). The 1982, 1991 ... of the years between 1990 and 1998 it was possible to calculate separate biomass estimates for the ...

   Meeting Document : WS-AREA 48-98/9 : Auteur(s): A.S. Brierley, J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson (UK)

6. e-sc-38-a5.pdf

   ... ecosystem survey in the eastern Indian Ocean sector of the Antarctic (Division 58.4.1) with a focus on ... elements. A full report from the Workshop will be provided to the Scientific Committee this year. 2.2 ... the winter season were associated with decreased penguin performance, but the relationship between ... considerable uncertainty will be associated with any assessment of the status of the krill stock, and application/pdf attached to:WG-EMM-2019

   Meeting Report : WG-EMM-2019

7. Acoustic estimates of krill biomass in the Elephant Island area: 1981–1993

   years 1981 to 1993 (with the exception of 1982 and 1986). Estimates for 1981 to 1991 are based on ... density over the 13-year period were 1 703 x  103 tonnes and 53.2 g/ 2. File:  01hewitt-demer.pdf ... ., 1991). Biomass estimates range from 267 x 10 3 tonnes (March/April 1985) to 4 880 x 10 3 tonnes ... vicinity of Elephant Island are presented for the years 1981 to 1993 (with the exception of 1982 and 1986 ... /m2. Average biomass and average density over the 13-year period were 1 703 X 103 tonnes and 53.2 g ... -year period was l 703 X 10"onnes and 53.2 g/m2. The lowest estimate of average biomass density was ... . * excluding biomass of observed superswarms Year 1981 1983 1984 1984 1985 1987 1988 1989 1990 ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 1–5 : Auteur(s): Hewitt, R.P. and D.A. Demer

8. The recent decline in recruitment of Gobionotothen gibberifrons in the South Shetland Islands (CCAMLR Subarea 48.1)

   extent Antarctic fish stocks recover from exploitation and how natural causes may add to man-made ... caused a number of years of very low recruitment around Elephant Island and the lower South Shetland ...

   Meeting Document : WG-FSA-12/20 : Auteur(s): K.-H. Kock (Germany) and C.D. Jones (USA)

9. Short note: time series of Drake Passage Oscillation Index (DPOI) from 1952 to 1988

   Abstract:  Naganobu et al. (1999) had assessed variability in krill recruitment and density with ... generally observed for around 3 years except 6 years between 1958 and 1964. Author(s):  M. Naganobu and K ... from 1952 to 1988. A time series of 3-month running mean suggested considerable seasonal variability of ... . A low DPOI less than 10 hPa appeared in 1967 and 1980. Intervals between the years of low DPOI were ...

   Meeting Document : WG-EMM-02/44 : Auteur(s): M. Naganobu and K. Kutsuwada (Japan)

10. e-sc-xxv-a5-appD.pdf

    ... observation rates and ranges increased from last year: Subarea 48.6, 50% compared with 31%; Subarea 58.4, 70 ... use in preventing net entanglements with seabirds. 55. Similar to reports from last year (SC-CAMLR ... 2004/05 to 80% (29 of 36 cruises) this year (WG-FSA-06/38, Table 3), although this is not as high as ... 48.3 this year as well as past years (Table 14), the Working Group reiterated the need to monitor application/pdf attached to:WG-IMAF-06 ad hoc

    Meeting Report : WG-IMAF-06 ad hoc

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