Résultats de la recherche

1. Indicative trends in by-catch of sharks in the CAMLR Convention Area

   fishing on shark species in the Convention Area for purposes other than scientific research, is prohibited ... trends in shark by-catch in the CAMLR Convention Area using information reported by vessels and ... scientific observers from the 1996–2017 fishing seasons. While there appear to be substantial gaps in the ... increased during the last 10-year period, with most of the by-catch reported in Division 58.5.2 and ...

   Meeting Document : WG-FSA-18/63 Rev. 1 : Auteur(s): C.D. Jones

2. Long-term changes in the size composition of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, after the 1978–1980 fishery in the area

   impact of the fishery in the area in 1978-80, allowed the comparison of the variations in mean annual ... the ecologically similar but unexploited N. coriiceps. The sharp decline in the abundance of N. rossii ... reported for the period 1983- 1991/2 is consistent with the increase in mean size observed between 1983 and ... 1986/7 and the duration of the inshore phase of the species, which is known to last for 6-7 years. In ...

   Meeting Document : WG-FSA-07/52 : Auteur(s): E.R. Marschoff, E.R. Barrera-Oro and N.S. Alescio (Argentina)

3. Investigating emigration in stock assessment models of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H

   Abstract:  In 2013, the Scientific Committee of CCAMLR could not achieve consensus on a stock ... status for Antarctic toothfish in Subarea 88.2 SSRUs 88.2C-H and identified several areas for further ... work. This was presented to WG-SAM in 2014, and found that the models were unable to fit patterns in ... the recaptures of tagged fish seen in the SSRU 88.2H fishery. The patterns showed a sharp decay rate ...

   Meeting Document : WG-FSA-14/56 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)

4. Proposal for a longline survey on toothfish in Statistical Subarea 48.6 in 2017/18

   Abstract:  Norway proposes a plan to investigate the toothfish populations in the Statistical ... Subarea (SS) 48.6 in 2017/18 using standardised longline gear, established tagging techniques, pop-up tags ... characterise the local toothfish populations in the area to better understand stock structure, movement ... spatial population models and assessments in support of management advice. Additional outcomes of the ...

   Meeting Document : WG-FSA-17/61 Rev. 1 : Auteur(s): Delegation of Norway

5. NEW REGIONAL-SCALE SURVEYS OF THE ADÉLIE PENGUIN BREEDING POPULATION IN PRYDZ BAY: A STEP TOWARDS IMPROVED ESTIMATION OF KRILL CONSUMPTION IN EAST ANTARCTICA

   . A review of historical Adélie penguin survey data in east Antarctica revealed Prydz Bay as a ... largest breeding population of Adélie penguins in east Antarctica but the most recent abundance survey was ... conducted 30 years ago. To understand current levels of prey consumption in east Antarctica it is therefore ... critical to understand if population numbers in Prydz Bay have changed in the past three decades ...

   Meeting Document : WG-EMM-11/32 : Auteur(s): C. Southwell, J. McKinlay, K. Newbery, L. Emmerson and J. Lieser (Australia)

6. ANNUAL CHANGES IN SPECIES COMPOSITION AND ABUNDANCE OF BY-CATCH FISH COLLECTED BY JAPANESE KRILL SCIENTIFIC OBSERVERS IN THE NORTH OF SOUTH GEORGIA (CCAMLR SUBAREA 48.3), DURING AUSTRAL WINTER FROM 2002 TO 2008

   -catch samples collected by scientific observers onboard Japanese commercial krill fishing vessels in the ... families were identified in the by-catch samples, among which the 3 species, Krefftichthys anderssoni ... , Lepidonotothen larseni and Champsocephalus gunnari, were recorded in every year from 2002 to 2008, and also the ... the increase in size in recent years. Electrona antarctica was not a major component of the recent ...

   Meeting Document : WG-EMM-11/40 : Auteur(s): T. Iwami, K. Taki and M. Kiyota (Japan)

7. Cycles of Euphausia superba recruitment evident in the diet of Pygoscelid penguins and net trawls in the South Shetland Islands, Antarctica

   compared to those from scientific net surveys in the South Shetland Islands from 1998-2006 in order to ... evaluate penguin diet as a sampling mechanism and to look at trends in krill populations. Both penguin diet ... and net samples revealed a 4-5 year cycle in krill recruitment with one or two strong cohorts ... those caught in nets; however, penguins rarely took juvenile krill. Penguin diet samples contained ...

   Meeting Document : WG-EMM-07/P2 : Auteur(s): A. Miller and W. Trivelpiece (USA)

8. Ecosystem studies carried out during the second Ukrainian Marine Antarctic Expedition in Subareas 48.2 and 48.1 in 1998

   Abstract:  In 1998 the 2nd Ukrainian Marine Complex Antarctic Expedition (UMCAE) on board ... scientific research vessel "Ernst Krenkel" took place in the western part of the Atlantic sector of ... important components in the pelagic ecosystems of the areas under review. In Subarea 48.2 there were fixed ... times than the same indices for 1997). In Subarea 48.1 there were revealed the differences in size ...

   Meeting Document : WG-EMM-00/5 : Auteur(s): V. Bibik and P. Gozhik (Ukraine)

9. An Apparent Decrease in the Prevalence of “Ross Sea Killer Whales” in the Southern Ross Sea

   occurrence patterns and diet of RS killer whales, and present new information on numbers observed in the ... daily basis has also decreased in nearby McMurdo Sound. Consistent with a decrease in the catch-per-unit ... -effort of scientific fishing for toothfish in McMurdo Sound, we suggest and review evidence that the ... change in Ross Sea killer whale numbers in the southern Ross Sea is related to a industrial fishery ...

   Meeting Document : WG-EMM-09/P01 : Auteur(s): D.G. Ainley, G. Ballard and S. Olmastroni

10. RESEARCH PLAN FOR TOOTHFISH IN DIVISION 58.4.4a & b BY SHINSEI MARU NO. 3 IN 2009/10

    Abstract:  In order to clarify stock status and biological characteristics of Dissostichus spp. in ... shallow points of < 500 m in SSRU A in order to avoid catching small fishes. A Trot line system will be ... employed for 93 research hauls (three quarters of the total) in order to make an evaluation of the stock ... line system in the same Division in 2007/08. The applied methodology is also considered to maintain the ...

    Meeting Document : WG-SAM-09/11 : Auteur(s): Delegation of Japan

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