Résultats de la recherche

1. Acoustic estimates of krill density at South Georgia, 1981 to 1998

   from year to year over that time, ranging from ≈ 2 to  ≈ 150 g m-2 (fresh mass). The 1982, 1991 and ... % confidence limits <15 g m-2). For five of the summers between 1990 and 1998 it was possible to calculate ... separate density estimates for northeastern and northwestern South Georgia, and in four of these seasons ... for an area equivalent to the western box. In three other of the years considered here data were ... years ,90' ,982 ,9i5 ,pB ,9+ ,9s6 $6' 40% ,989 ,99' ,992 ,9@ ,9qb ,9qb ,9q6 ,992 49% Year Figure 2 ... given year is less than p - o for all years, then the year in Acoustic estimates of krill density ... the year in which krill density at the island was the lowest of all years for which data are ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 47–57 : Auteur(s): Brierley, A.S., J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson

2. From the Editor

   approach pro- vides a biomass estimate of 37 million tonnes for the area of the southwest Atlantic ... peer-review process (and those of the editorial staff), published work may contain errors ... Science recognises that this must be done at a scientific level and provides an opportunity for both ... legal disputations, or as an instrument for personal revenge. We do not support such misuse and ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 199

3. Attribtuion of acoustic echoes to squid in the south Atlantic

   order to characterise an acoustic signature that may be used to identify this species of squid ... is an advantage for making a positive identification of echoes. An initial review of the echocharts ... 02:lO 25 12:lO 2 0 01:30 100 02:25 130 01:45 80 00:30 20 01:55 150 01:30 60 ... (see Starr and Thorne, in press, for a review of acoustic assessments of squid). METHODS In early ... area at a depth of 25 m for 12 hours and caught an estimated 2 300 M. hyadesi (Table 2). No other ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 259–271 : Auteur(s): Goss, C., P. Rodhouse, J.L. Watkins and A.S. Brierley

4. On the presence of Paralomis spinosissima and Paralomis formosa in catches taken during the Spanish survey Antártida 8611

   seven hauls of the 29 made around Shag Rocks and in 20 of the 104 hauls made at South Georgia. P ... . Tows were 30 minutes in duration and the vessel speed was three knots. The trawl used for sampling ... . spinosissima was caught in seven hauls of the 29 made around Shag Rocks and in 20 of the 104 hauls made at ... ilots Shag et dans 20 des 104 traits proches de la Georgie du Sud. P. formosa a et6 p&hP a deux ... ~panee~l f i B pai io~e WXHOW T e o p r ~ a - B 20. BMA P. formosa 0 6 n a s n ~ s a n c r l AeamAbI ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 165–173 : Auteur(s): López Abellán, L.J. and E. Balguerías

5. Significant conservation benefits obtained from the use of a new fishing gear in the Chilean Patagonian toothfish fishery

   artisanal trotline fishery for Patagonian toothfish (Dissostichus eleginoides) in Chile is described. The ... ~70–74 cm Ø~30 cm Ø~10–15 cm ~100–120 cm Hooks Snoods ~20 cm ~15 cm ~25 cm Weight 4–8 kg ... net sleeves at an estimated cost of US$25–30 each. However these net sleeves are durable and can be ... step in the search for an effective deterrent to the dep- redation of fish by marine mammals. The ... ). The results for 2006 were absolute; no birds were killed from an effort of almost 4 million hooks ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 79–91 : Auteur(s): Moreno, C.A., R. Castro, L.J. Mújica and P. Reyes

6. Catch per unit effort and proportional recruitment indices from Japanese krill fishery data in Subarea 48.1

   period. The use of different fishing strategies in response to a demand for higher product quality and a ... general decrease in krill density in the study area were considered as possible reasons for this. On the ... 12.2 1981/82 1 3264 615 13 334 0.30 1989/90 5 2538-3608 290-707 13, 15, 18, 20 1815 ... 11.41 1981 /82 1 3264 615 13 97 0.20 1989/90 4 2538-3608 290-707 13, 15, 18, 20 1830 ... components in Figure 2 show the age 2+ components. Three parameters for age 2+ components (proportion, mean ... et al. (1997) for two year classes: the 1991/92 year class, which showed apparently higher values ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 47–63 : Auteur(s): Kawaguchi, S., T. Ichii and M. Naganobu

7. Preliminary results of a bottom trawl survey around Elephant Island in October and December 1987

   differed significantly from that in previous seasons which argues for an exchange with C. gunnari from ... previous seasons which argues for an exchange with C. gunnari from other shelf areas of the Peninsula ... 1982/83, differed significantly from that in 1985 and 1986 arguing for an exchange with individuals ... ) '- 10 20 10 Figure 8: 10 20 30 Chaenocephalus aceratus Oct. [n-2163] - Dec. [n - 1135 ... ] Notothenia rossii marmorata Dec. [n - 291] 60 40 20 567 89101112 15 40 50 60 70 80 Total Length ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 185-200 : Auteur(s): Kock, K.-H.

8. Food consumption by predators in a CCAMLR integrated study region

   / Description:  A detailed description of the structure and mode of operation of a model for estimating food ... Georgia Integrated Study Region and incorporates new features, allowing for seasonal variation in predator ... energy requirement on each day of the year for each species in the community. Because the sizes ... . Columns 1-2 3-7 8 9-13 14 15-19 20 21-25 26 27-31 32 33-37 Contents Blank a or b for ... the sexes separately and does not incorporate the necessary correction for an assimilation efficiency ... energy costs, rather than empirical values for the species concerned, resulted in a 30% decrease in food ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 489–519 : Auteur(s): Croxall, J.P., C. Ricketts and A.G. Wood

9. Using ecosystem monitoring data to detect impacts

   impacted by activities such as fishing. This paper discusses a range of methods for inferring such impacts ... an observed value in an unimpacted system, or (ii) the frequency of values below a fixed reference ... probabilities of Type I and Type II error can be evaluated analytically for these methods, which facilitates ... within a few years of its onset, but a fixed reference point method could have provided this sustained ... : Method 4 with inference based on changes in frequency: the observed proportion of years in an n-year ... objectives for animal populations. Furthermore, the state of indicator populations cannot always be ... baseline PDF were then used to test for impacts in 20 more obser- vations drawn from the baseline period ... , represent- ing an ‘unimpacted’ population, and 20 observa- tions drawn from a distribution representing the ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 197–212 : Auteur(s): Hill, S.L., J. Forcada, P.N. Trathan and C.M. Waluda

10. Beyond MSY: a consideration of definitions of management objectives

    / Description:  The concept of ‘Maximum Sustainable Yield’ (MSY) has provided a useful guideline for resource ... assessment. Suggestions are made for the provision of advice to the Commission for the finfish and krill ... Article II of the CCAMLR Convention. The criteria will depend on whether the main concern is with ... fishing practice, the distinction is an important one that exists for all fish except perhaps for a f~w ... curves are identical with the curves of (G-M)/R. For low age at first capture there is a clear ... recruit curve of Figure 2 for a high age at first capture does not reflect the behaviour of the total ... largest stock in the data series, the MNR for plaice being indeterminate but certainly less than 30 ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 299-322 : Auteur(s): Gulland, J.A.

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