Résultats de la recherche

1. A review of the diet and at-sea distribution of penguins breeding within the CAMLR Convention Area (submitted to the 2008 Joint CCAMLR-IWC Workshop)

   Paper Title:  A review of the diet and at-sea distribution of penguins breeding within the CAMLR ... in an ecologically sensitive manner demands that catches do not depress stocks within the foraging ... published information on the diet and at-sea distribution of the six penguin species that breed in the CAMLR ... Convention Area, the methods used to collect these data and the uncertainties inherent in them. The review ... population. Aims and scope The aim of this review is to summarise published data on penguins concerning ... Populations (WG-EMM- STAPP) work and will be presented elsewhere. The review begins by giving an overview of ... associated with each approach. It then proceeds to review all published information on the diet and at-sea ... comprehensive. The review only includes published literature to allow the reader to check the information at ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 75–114 : Auteur(s): Ratcliffe, N. and P. Trathan

2. Fitting Euphausia superba into Southern Ocean food-web models: a review of data sources and their limitations

   Paper Title:  Fitting Euphausia superba into Southern Ocean food-web models: a review of data ... of each method of sampling krill, i.e. with nets (for historical time series, demographic information ... the benthos have fundamental implications, both for assessing biomass and for modelling the food web ... . Growth in spring, summer and autumn is now fairly well quantified, but mortality remains an enigma. We ... first is the underside of sea-ice – an important habitat for krill year-round (Brierley et al., 2002 ... occurred year- round throughout Antarctica, and regularly with an estimated ~20% of the stock deeper than ... ) method has been in use for 20 years but there have been various attempts to use other analytical ... distribution and the environment are hard to generalise. For example, right across the 80–150°E (Indian ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 219–245 : Auteur(s): A. Atkinson, S. Nicol, S. Kawaguchi, E. Pakhomov, L. Quetin, R. Ross, S. Hill, C. Reiss, V. Siegel, G. Tarling (submitted to the 2008 Joint CCAMLR-IWC Workshop)

3. Protecting young fish and spawning aggregations of Champsocephalus gunnari in Subarea 48.3 (South Georgia): a review

   Subarea 48.3 (South Georgia): a review Abstract / Description:  The need to protect young fish and ... , and a strategy for the future protection of young fish and spawning aggregations of C. gunnari in ... 90 mm, to protect first spawners, or 100 mm, to give an age at first capture of 4 years.' * The ... , at certain times of the year may show a high degree of age specificity. For example, during the ... , paragraphs 9.1 and 9.2). This runs from 1 December to 30 November, and has specific implications for the ... , the Scientific Committee noted the benefits associated with an increase in the age at first capture ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 75–86 : Auteur(s): Parkes, G.B

4. A review of data on abundance, trends in abundance, habitat use and diet of ice-breeding seals in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)

   important first steps for improving ecosystem models. This review focuses on seals that breed in ice ... Paper Title:  A review of data on abundance, trends in abundance, habitat use and diet of ice ... ), south Indian Ocean (20°E–90°E) and Weddell Sea (20°E–60°W)). The haul-out model developed for ... steps for improving ecosystem models. This review focuses on seals that breed in ice habitats of the ... were then summed to derive an estimated total population size for each species in each region (Table ... 000– 4 748 000) from 90°W to 30°W, and 946 000 (726 000–1 397 000) from 64°E to 150°E. The crabeater ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 49–74 : Auteur(s): Southwell, C., J. Bengtson, M. Bester, A.S. Blix, H. Bornemann, P. Boveng and M. Cameron, J. Forcada, J. Laake, E. Nordøy, J. Plötz, T. Rogers, D. Southwell, D. Steinhage, B.S. Stewart and P. Trathan

5. A review of the effectiveness of streamer lines as a seabird by-catch mitigation technique in longline fisheries and CCAMLR streamer line requirements

   Paper Title:  A review of the effectiveness of streamer lines as a seabird by-catch mitigation ... light of a review of existing literature and available data on the effectiveness of single and paired ... recommendations of this review and the discussions of the ad hoc Working Group on Incidental Mortality Arising ... November 2002 (Table 1). Streamer lines had an aerial extent of 30 to 70 m depending on sea state ... review of current published material and new data on CCAMLR streamer line perfor- mance standards. A ... above the water using the boom-and-bridle system, achieving an aerial extent of up to 60 m. For all ... Measure 25-02 (2002) should be increased or be replaced with an aerial extent requirement of at least 80 ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 189–201 : Auteur(s): Melvin, E.F., B. Sullivan, G. Robertson and B. Wienecke

6. A review of the trophic role of mesopelagic fish of the family Myctophidae in the Southern Ocean ecosystem

   Paper Title:  A review of the trophic role of mesopelagic fish of the family Myctophidae in the ... CCAMLR Science, Vol. 2 (1995): 71-77 A REVIEW OF THE ... for myctophids. Mean yearly production of zooplankton in this area is 1.2 billion tonnes (Voronina ... in the food chain. This study is mainly based on published and unpublished results of research ... undertaken by VNIRO and other national research institutes. Published results of studies carried out by ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 71–77 : Auteur(s): Kozlov, A.N

7. Intra-annual variability in the density of Antarctic krill (Euphausia superba) at South Georgia, 2002–2005: within-year variation provides a new framework for interpreting previous ‘annual’ estimates of krill density

   the regression-predicted within-year variation. Years that stand out for markedly low krill density ... South Georgia, 2002–2005: within-year variation provides a new framework for interpreting previous ... g m –2, SD = 24.3), but had risen substantially by summer in each year (mean = 89.5 g m –2, SD ... instruments were used to explore whether high-frequency temporal variation (i.e. within-year) could have led ... -predicted within-year variation. Years that stand out for markedly low krill density (i.e. densities below ... ) AT SOUTH GEORGIA, 2002–2005: WITHIN-YEAR VARIATION PROVIDES A NEW FRAMEWORK FOR INTERPRETING ... signifi cantly affect the estimate of krill density for a given ‘year’. Understanding the magnitude ... , timing and causes of intra-annual variability is thus an essential prerequisite for ecosystem ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 27–41 : Auteur(s): Saunders, R.A., A.S. Brierley, J.L. Watkins, K. Reid, E.J. Murphy, P. Enderlein and D.G. Bone

8. An overview of Southern Ocean zooplankton data: abundance, biomass, feeding and functional relationships (submitted to the 2008 Joint CCAMLR-IWC Workshop)

   for differences in the extent of identification of early larval stages. Likewise, the time of year ... Paper Title:  An overview of Southern Ocean zooplankton data: abundance, biomass, feeding and ... an enormous amount of data on Southern Ocean (SO) zooplankton, mostly on their distribution with a ... minority addressing rate processes. This review aims to summarise these data and show where it resides, to ... one-half of those above. A change in the view of SO copepods in the last 20 years has followed an ... have faster growth rates for a given size (Clarke and Peck, 1991). This review defines ... , with low energetic costs and an effective mechanism for feeding unselec- tively at low food ... estimated for South Georgia (Watts and Tarling, 2012). Pteropods Pteropods are gastropod molluscs with an ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 171–218 : Auteur(s): A. Atkinson, P. Ward, B.P.V. Hunt, E.A. Pakhomov and G.W. Hosie

9. An index of per capita recruitment

   recruitment (PCR) is proposed such that where R 1 is the proportion of age-l animals sampled in year y and M ... in mortality and reduction in the proportion of age-l spawners. Introducing year-to-year random ... assumptions that: (i) post-recruit mortality does not vary over age or between years; (ii) 100% of age-l ... years, and when all age-l animals spawn. These conclusions are insensitive to changes in the shape of ... ; M2, M3, Mq . . . the post- recruit mortality rates for age-2, age-3, age-4 ... year classes; and y ... for Ml and c, and a is set to 0.0, PCR underestimates R/S by an average of approximately 30 ... appearing as a large mode at 20 to 30 mm length and in subsequent years as progressively longer length ... years except for the moderate year class of 1990/91. The non-linear transformation of R1 to PCR ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 179–196 : Auteur(s): Hewitt, R

10. A first attempt at an assessment of the Patagonian toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ

    Paper Title:  A first attempt at an assessment of the Patagonian toothfish (Dissostichus ... eleginoides) resource in the Prince Edward Islands EEZ Abstract / Description:  The history of the fishery for ... -per-unit-effort (CPUE) trend. Application of a simple age-structured production model (ASPM) provides ... maximum of about 400 tonnes. Implications for surveillance are discussed. File:  02brandao-etal.pdf ... analyses conducted in this paper. The legal catch indicated for 2001 is an estimate. Year Legal ... 2009 2012 2015 2018 2021 Year Bi om as s (t) 0 400 800 Exploitable biomass projections for base ... for base case (h = 0.6) 20 Brandão et al. Figure 2: Population model fi ts and 20-year ... 2003 2006 2009 2012 2015 2018 2021 Year Bi om as s (t) Exploitable biomass projections for higher ...

    Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 11–32 : Auteur(s): Brandão, A., D.S. Butterworth, B.P. Watkins and D.G.M. Miller

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