Résultats de la recherche

1. Results of fish stock assessment survey, South Georgia, December 1987 - January 1988

   complements earlier surveys in the same area and showed that most of the stocks are continuing to decline ... in abundance. File:  02-McKennna-and-Saila.pdf ... for any subsampling on deck or in the laboratory, and was standardized to 30 minute tows. 21 3 ... . The strongest peak in 1987/88 was at the smallest size (- 18 cm)(Figure 5c). Only 20 individuals ... the single, strong 84/85 year class (Gabriel 1987). The decreased biomass in 1987/88 would suggest ... Champsocephalus gunnari total length frequency (n=19366) 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 Length ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 19-52 : Auteur(s): McKenna, Jr., J.E. and S.B. Saila

2. Analysis of krill trawling positions north of the South Shetland Islands (Antarctic Peninsula area), 1980/81–1999/2000

   commercial krill trawling positions for the 1980/81 to 1999/2000 seasons in the area north of the South ... Shetland Islands were analysed in relation to biological and environmental factors. Commercial fishing ... operations concentrated on the outer shelf in the early 1980s, along the shelf slope in the mid to late 1980s ... , and from the shelf across to the outer shelf in the early to late 1990s. Intra-annually, trawling ... ecosystem. CCAMLR Science, 3: 13-30. Ichii, T. 2000. Krill harvesting. In: Everson, I. (Ed.). Krill ... from fishing vessels, the reasons for changing fishing grounds in January of these years were either ... Association, pers. comm.). This implies that although mean salp densities were generally high in these years ... these two years showed unusual patterns. In 1990/91 most trawling positions were located from the ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 25–36 : Auteur(s): Kawaguchi, S. and K. Segawa

3. Book review: Fish and Fish Resources of the Antarctic

   work by K.V. Shust (Doctor of Biological Sciences), published in 1998, remains fairly unknown beyond a ... fish species. Moreover its value is enhanced by the author having participated in many fisheries ... research expeditions in Antarctica. The introduction notes that until the 1960s Antarctic waters were still ... began regular, largescale multidisciplinary studies here in the early 1960s. Starting from the first ... knowledge acquired by the author over a period of more than 30 years allowed lum to analyse both the ... , Russia antarctica@vniro.ru Published in Russian by: Russian Federal Research Institute of Fisheries ... I Brief essay of the Antarctic ichthyofauna Chapter I1 Fish distribution in Antarctic waters 1 ... resources Literature Cited This work by K.V. Shust (Doctor of Biological Sciences), published in 1998 ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 165–168 : Auteur(s): Shust, K.V

4. Depth distribution and spawning pattern of Dissostichus eleginoides at South Georgia

   Abstract / Description:  Trends in mean length and maturity stage of Patagonian toothfish (Dissostichus ... both up and down slope at particular times of year. Months with a high mean length at depth are May and ... in addition to a major spawning event in late July/August, there may be a small spawning event in ... . When this fishery started in 1989, fishing was conducted year round (CCAMLR, 1998). However ... year to year, but in 1998 there seem to have been two spawning events. The first was in late April ... together accounted for 47% of the catch of the 11 vessels that took part in the fishery. Most of the ... London SW7 2QA, United Kingdom Abstract Trends in mean length and maturity stage of Patagonian ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 19–36 : Auteur(s): Agnew, D.J., L. Heaps, C. Jones, A. Watson, K. Berkieta and J. Pearce

5. An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort

   performs better in the case of zero detections and can potentially better handle the evasion of detection ... method used directly affects the system. This is the prevention/detection problem, in which the greater ... fishing (in the simulation datasets) for a given estimated level of fishing is very large. This range of ... previous and/or subsequent patrol vessels would be to integrate over the year all vessels in the area ... patrols starting every 30 days and lasting for 16 days. All dates are given in number of days from some ... . The ranges in the ‘New method’ column covers the cases of 1 to 20 detections. When there are zero ... Ball 150 made in years in which there are no detections. It can often be the case that an absence of ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 143–161 : Auteur(s): Ball, I

6. Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?

   m –1 lead core) longlines by some autoline vessels in the Kerguelen and Crozet Islands Patagonian ... . A trial was conducted in the Ross Sea to determine the effectiveness of line setters in increasing ... were identical, including in the first few metres of the water column where seabird interactions are ... depth of longlines for given distances astern. This increase in depth is minor and unlikely to result in ... with Løkkeborg (2000) who found that UW longlines set with a line setter in the Norwegian longline ... weight (IW) (50 g m–1 lead core) longlines by some autoline vessels in the Kerguelen and Crozet Islands ... sink rates. A trial was conducted in the Ross Sea to determine the effectiveness of line setters in ... setter were identical, including in the first few metres of the water column where seabird interactions ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 107–114 : Auteur(s): Robertson, G., J. Williamson, M. McNeill, S.G. Candy and N. Smith

7. Results of the CCAMLR Antarctic fish otoliths/scales/bones exchange system

   same species among different laboratories. Four species were included in the exchange: Notothenia ... agreement in age determination was highest for scales of juvenile N. rossii and for otoliths of juvenile C ... . antarcticum. Agreement between otoliths and scales of individual N. gibberifrons was in the order of 50 ... in experienced readers when it was 38.0%. Even allowing for one year of deviation among readers ... of Notothenia rossii marmorata Fischer 1885 in the west Antarctic waters. Arch. FischWiss. 30 (1 ... /05/85 26.7 26 20/05/85 37.7 27 07/08/85 36.6 28 07/08/85 39.1 29 23/08/85 37.0 30 08/09/85 37.6 ... gibberifrons Lonnberg population of the shelf of South Georgia in the years 1977 to 1979. Pol. Polar Res. 1(4 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 197–226 : Auteur(s): Kock, K.-H.

8. Catch-at-age analysis applied to new fisheries: the case of Dissostichus eleginoides

   Abstract / Description:  Traditionally, the approach used in the assessment of new fisheries has been based ... resource by coarse methods. The main aim of such surveys is to monitor fishing operations in order to ... develop a comprehensive sampling design which will provide data in line with assessment procedures that ... are quite similar to those commonly used in the statistical sampling theory. These procedures are, to ... = natural mortality 't = research survey duration (in years) R = recruitment t r = age at recruitment t ... parameters presented in Table 1. Catch data were available for two years (1991 and 1992), which could be ... , the approach used in the assessment of new fisheries has been based on research surveys, making it ... of such surveys is to monitor fishing operations in order to develop a comprehensive sampling design ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 3–9 : Auteur(s): Zuleta, A.V. and C.A. Moreno

9. Differentiation of independent populations of Antarctic krill

   :  Several countries have recently shown an interest in commercial krill fishing. An understanding of krill ... of recent studies in genetic and morphophysiological variability of krill and Antarctic water ... . superba in the Southern Ocean subdivided into several independent sub-populations. The number of these sub ... Weddell Drift waters and in the waters of the coastal current between the zero meridian and 30 o E. The ... another ; - 281 - 5. assessment of krill stock in each of the sUbpopulations and study of its year ... OF THE ANTARCTIC KRILL In recent years, several countries (Poland, Federal Republic of Germany ... interest in commercial krill fishing. An understanding of krill population structure is needed to ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 275-281 : Auteur(s): USSR

10. A risk-management framework for avoiding significant adverse impacts of bottom fishing gear on Vulnerable Marine Ecosystems

    measure in 2007 to ensure that significant adverse impacts of bottom fishing gear on Vulnerable Marine ... fine-scale rectangles (0.5° latitude by 1.0° longitude) or smaller can be used in the first instance ... . Temporal scales must be matched to the recovery scale of VMEs, which are probably in the order of many ... scientific research and data collection plans are in place and that risk mitigation measures are successful ... seabird mortality as described in Waugh et al. (2008) and implemented each year since 1997 by the ad hoc ... abundance of many species or large changes in some species. 5–25 Months–one year 3 Major Measurable ... Likely (5) 0 5 10 15 20 25L ik el ih oo d Almost certain (6) 0 6 12 18 24 30 Martin-Smith 184 ... s * C or al r ee fs in G ul f o f C ar pe nt ar ia (H ar ri s et a l., 20 04 ...

    Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 177–193 : Auteur(s): Martin-Smith, K

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