Résultats de la recherche

1. Disentangling the influence of three major threats on the demography of an albatross community

   seabirds, globally. Understanding the relative influence and compounding nature of marine and terrestrial ... threats on the demography of seabird communities is vital for evidence-based conservation. Using 20 years ... of capture-mark-recapture data from four sympatric species of albatross (black-browed Thalassarche ... ) at subantarctic Macquarie Island, we quantified the temporal variability in survival, breeding ...

   Meeting Document : WG-FSA-2019/34 : Auteur(s): J.B. Cleeland, D. Pardo, B. Raymond, G.N. Tuck, C.R. McMahon, R.A. Phillips, R. Alderman, M.-A. Lea and M.A. Hindell

2. Preliminary results on by-catch of fishes caught by the fishery vessel Chiyo Maru No. 3 to the north of the South Shetland Islands (February to March, 1996)

   in 11 hauls operated at some distance from the shelf, in the offshore waters with a depth of 275 ... Abstract:  Investigations on by-catch of fishes captured during krill fishing by F/V Chiyo Maru No ... . 3 were made from 3 February to 6 March, 1996 to the north of the South Shetland Islands. Among 147 ... hauls examined, a total of 99 specimens belonging to 5 families and 14 species were captured as by-catch ...

   Meeting Document : WG-EMM-96/52 : Auteur(s): Ichii, T., Kawaguchi, S., Naganobu, M.

3. Detection of growth zones in the eyestalk of the Antarctic krill Euphausia superba (Dana, 1852) (Euphausiacea)

   Abstract:  No reliable measures of age currently exist in the Antarctic krill, Euphausia superba ... for identifying growth zones. The krill was collected at the South Orkney Islands during January and ... , each zone consisting of one light and one dark section. The width of the longitudinal sections ... zones. There were positive relationships between the number of zones and the maturity stage, and between ...

   Meeting Document : WG-EMM-16/P02 : Auteur(s): B.A. Krafft, M. Kvalsund, G. Søvik, E. Farestveit and A.-L. Agnalt

4. DISCRIMINATION OF ENVIRONMENTAL VARIABLES THAT INFLUENCE THE CATCH PER UNIT EFFORT: THE CASE OF THE ANTARCTIC KRILL FISHERY

   Abstract:  The use of the catch per unit effort (CPUE) as an index of abundance usually requires a ... standardization process consisting of isolating all those exogenous factors from temporal variations in abundance ... vessel efficiency, variations in fishing strategies, and environmental fluctuations. The selection of the ... latter has been considered to be one of the most difficult, arbitrary, and poorly documented stages since ...

   Meeting Document : WG-EMM-11/P3 : Auteur(s): J.C. Quiroz, R. Wiff, M.A. Barrientos and F. Contreras

5. Mercury concentrations of five species of Antarctic fish collected from CCAMLR Subareas 88.1 and 88.2

   dewitti) and blue antimora (Antimora rostrata) were at low levels, similar to that of D. mawsoni. Mercury ... slightly lower than the permissible level of 0.5 mg/kg-1 set by the New Zealand Food Safety Authority ... (NZFSA). In contrast, mean levels of mercury for D. mawsoni were 0.10 mg/kg-1 in the 1998 samples and ... 0.16 mg/kg-1 in the 2006 samples, both of which are well below the permissible level. Mercury levels ...

   Meeting Document : WG-FSA-07/24 : Auteur(s): S.M. Hanchet, D.M. Tracey, A. Dunn, P.L. Horn and N. Smith (New Zealand)

6. A history of the exploitation of the Ross Sea, Antarctica

   from the Ross Sea continental shelf and slope beginning at the start of the 20th century; none preceded ... Abstract:  Recent analyses of anthropogenic impacts to marine systems have shown the Ross Sea to ... be the least affected stretch of ocean on Earth, although historical effects were not included in the ... study. Herein the literature is reviewed to quantify the extent of extraction of biological resources ...

   Meeting Document : WG-EMM-09/P03 : Auteur(s): D.G. Ainley

7. TIMING OF CLUTCH INITIATION IN PYGOSCELIS PENGUINS ON THE ANTARCTIC PENINSULA: TOWARDS AN IMPROVED UNDERSTANDING OF OFF-PEAK CENSUS CORRECTION FACTORS

   that preclude nest censuses being conducted at the peak of egg laying as established by the CCAMLR ... Ecosystem Monitoring Program (CEMP) (Scientific Committee for the Conservation of Antarctic Marine Living ... knowing 1) how the census is timed relative to the peak of egg laying and 2) how nest numbers change ... through the breeding cycle. In this paper we present an analysis relating to both of these two challenges ...

   Meeting Document : WG-EMM-PSW-08/15 : Auteur(s): H.J. Lynch, W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece (USA)

8. Spatial and temporal distribution patterns of acoustic backscatter in the New Zealand sector of the Southern Ocean

   Abstract:  Mid-trophic level organisms (MTLO) of open-ocean marine ecosystems play a key role ... linking primary and tertiary consumers. Despite their importance, characterisation of MTLO is limited due ... from vessels of opportunity transiting across the Southern Ocean between New Zealand and the Ross Sea ... provided the opportunity to study distribution and abundance of MTLO over 7 yr. Analyses were performed to ...

   Meeting Document : WG-EMM-18/P06 : Auteur(s): P.C. Escobar-Flores, R.L. O’Driscoll and J.C. Montgomery

9. Scientific contribution to the 2016 review of Conservation Measure 51-07: Part 2 – outcomes from the application of the risk assessment framework for distributing the krill trigger level in Area 48

   fishing, which may be occurring at present because of the much larger catch possible under CM51-07 than ... Abstract:  This paper presents the outcomes from the application of the risk assessment framework ... for distributing the krill trigger level in Area 48, which was described in Part 1 of this work (WG ... -FSA-16/47). This second part has two additional components of work: (i) results of the analyses using ...

   Meeting Document : WG-FSA-16/48 Rev. 1 : Auteur(s): A. Constable (on behalf of the e-group on CM 51-07 WG-EMM review)

10. Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass

    the spawning stock (as a proportion of SB0) at the end of the projection run (level of escapement ... , while the second is a generalised yield model. The decision rules relate to the effects of a specified ... long-term annual yield (γ) on (i) the probability of the spawning stock being reduced below a set ... proportion of SB0 during a projection run (probability of critical depletion) and (ii) the median status of ...

    Meeting Document : WG-EMM-97/45 : Auteur(s): de la Mare, W.K., Constable, A.J.

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