Résultats de la recherche

1. Beach litter survey, Signy Island, South Orkney Islands 1994/95

   origin noted. At Foca Cove, a total of 91 items were found with a combined weight of 18.26 kg. At ... Cummings Cove, a total of 90 items were found (22.79 kg) and at Starfish Cove, a total of 27 items were ... sustained decline in the incidence of marine litter found at Signy as ships complied with international ... dumping of rubbish from ships or discarded gear from fishing vessels, rather than from either of the ...

   Meeting Document : CCAMLR-XIV/BG/15 : Auteur(s): Delegation of the United Kingdom

2. Pilot study on electrophoretic variation and stock structure in the mackerel icefish, Champsocephalus gunnari, South Georgia waters

   . Clearly resolved enzyme phenotypes were obtained at 18 loci, of which 7 exhibited polymorphism at the 0.95 ... ; phosphoglucose mutase, PGM-II 2.7.5.1; pyruvate kinase, PK 2.7.1.40). Routine scoring of 116 fish at the 18 loci ... Abstract:  The use of allozymes as a tool in stock structure analysis was examined in the ... commercially-exploited mackerel icefish, Champsocephalus gunnari, together with a preliminary assessment of ...

   Meeting Document : WG-FSA-90/10 : Auteur(s): G.R. Carvalho and D.P. Lloyd-Evans (United Kingdom)

3. Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica

   February, but this was limited, probably due to the short temporal distribution of the data. Length-at ... -maturity and age-at-maturity ogives indicated that 50% of the fish sampled were mature at about 340–360 mm ... (TL) and about 3–4 years of age and that 95% were mature at about 370–400 mm (TL) and 6–8 years of age ... , diet, and age estimation. All of the icefish sampled were identified as Chionobathyscus dewitti, and ...

   Meeting Document : WG-FSA-07/25 : Auteur(s): C.P. Sutton, M.J. Manning, D.W. Stevens, P.M. Marriott (New Zealand)

4. Adult male Antarctic fur seals: tourists, trouble makers or marine ecosystem sentinels?

   functional responses of each species.  We highlight this by collecting at-sea habitat use of adult male ... through the partitioning of resource exploitation either temporally or spatially.  Understanding the ... , characterizing the competitive interactions between these species is key to disentangling the drivers of ... breeding Chinstrap penguins in the Bransfield Strait at a time when fishing effort is minimal, as well as ...

   Meeting Document : WG-EMM-2019/49 : Auteur(s): A. Lowther, C. Lydersen and K. Kovacs

5. Gestion de précaution de la pêcherie de krill antarctique à des échelles spatiales réduites dans le contexte de la variabilité climatique régionale : l'absence de données implique-t-elle une absence d'impact ?

   ):  Delegation of the United Kingdom Title:  Precautionary management of the Antarctic krill fishery at small ... by the krill fishery at specific times or in particular areas might not be considered to be rational ... management. However, we also note that the current network of ecosystem monitoring sites currently makes it ... difficult to obtain the necessary management information at the resolution needed to facilitate ...

   Meeting Document : SC-CAMLR-XXXV/11 : Auteur(s): Delegation of the United Kingdom

6. Revised proposal for the ongoing research plan on Patagonian toothfish (Dissostichus eleginoides) in Division 58.4.4b (2016/17–2020/21)

   and a final report will be provided at WG-FSA in 2021. Author(s):  Delegations of Japan and France ... and WG-FSA-16/33 Rev. 1) for a period of 5 years. The proposal submitted here has been substantially ... revised to address the concerns expressed at WG-FSA 2019 and SC-CAMLR-XXXVII (para. 3.158). We followed ... part of 58.4.4b_2 (WG-FSA-18/23) and a new French vessel has joined the research plan to increase ...

   Meeting Document : WG-FSA-2019/64 : Auteur(s): Delegations of Japan and France

7. Expanding Antarctic seabird monitoring in east Antarctica using a remote camera network: potential use for monitoring for feedback management

   made at sub-optimal times, and (5) through a network of cameras, quantify spatio-temporal variation in ... these parameters. By establishing a network of cameras at seabird breeding colonies across east ... Antarctica, we are now able to cost-effectively monitor aspects of seabird breeding parameters at the large ... Abstract:  Antarctic seabirds are important indicators of impacts and change in Southern Ocean ...

   Meeting Document : WG-EMM-14/27 : Auteur(s): C. Southwell and L. Emmerson (Australia)

8. Uncertainty in echosounder calibrations

   (Cu)- 23.0 mm and tungsten carbide (WC)- 33.0 mm and 38.1 mm). At the best case range of 5 m, the TS ... Abstract:  Calibration of echo sounders for fish stock assessment are commonly performed using the ... standard sphere method (Johannesson and Mitson, 1983; Simmonds et al., 1984). To determine the accuracy of ... the method, direct measurements of target strength (TS) were made of three standard spheres (Copper ...

   Meeting Document : WG-EMM-96/40 : Auteur(s): Soule, M.A., Demer, D.A.

9. Age-length key for Champsocephalus gunnari from Subarea 48.3, Dr Eduardo Holmberg survey, February/March 1994

   specimens (>33 cm) were scarce. At South Georgia, fish of age groups 1-4 were truly represented; at Shag ... on the readings of otoliths randomly collected during the R/V Holmberg survey in Feb/Mar 1994. Small ... and medium sized fish (total length 12-33 cm) constituted the bulk of the samples (93%), while larger ... Rocks, a large concentration of fish belonging to age groups 2 (90%) and 3 (10%) was found. The length ...

   Meeting Document : WG-FSA-94/11 : Auteur(s): E. Barrera-Oro, E. Marschoff and R. Casaux (Argentina)

10. Results from the reduced groundfish survey conducted in CCAMLR Subarea 48.3 in January 2012

    -weighted length frequencies of mackerel icefish indicated that 2+ and 3+ sized fish dominated at Shag Rocks ... Abstract:  A reduced (three day) groundfish survey took place at Shag Rocks on the FV New Polar ... random hauls were completed around Shag Rocks with 3 additional opportunistic sites at South Georgia ... . Reasonable catches of Patagonian toothfish were found around Shag Rocks (greater than in 2009 and 2010), with ...

    Meeting Document : WG-FSA-12/37 : Auteur(s): J. Brown, S. Gregory, A. Stanworth, V. Carretero, G. Baker and M. Belchier (United Kingdom)

Pages