Resultados de la búsqueda
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Results of the fourth CCAMLR sponsored research survey to monitor abundance of sub-adult Antarctic toothfish in the southern Ross Sea, February 2015 and further development of the time series
(<110 cm) toothfish for the core strata showed a significant decline in this fourth year of the ... first three surveys were completed in February 2012, 2013, and 2014. In this paper we provide results of ... the fourth survey in the time series. The objectives of this survey were: (1) To carry out a longline ... survey to monitor sub-adult toothfish in the southern Ross Sea (strata A–C) using standardised gear in a ...
Meeting Document : WG-SAM-15/44 : Autor(es): S.M. Hanchet, B.R. Sharp, S. Mormede, S.J. Parker (New Zealand) and M. Vacchi (Italy)
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SUMMARY OF NOTIFICATIONS FOR KRILL FISHERIES IN 2010/11
-EMM last year (SC-CAMLR-XXVIII, Annex 4, Paragraph 3.32), the essential information contained in krill ... Abstract: SUMMARY OF NOTIFICATIONS FOR KRILL FISHERIES IN 2010/11 Secretariat In accordance with ... Conservation Measure 21-03, seven Members notified their intentions to participate in krill fisheries in ... Subareas 48.1, 48.2, 48.3 and 48.4 and Divisions 58.4.1 and 58.4.2 in 2009/10 (Table 1); there was no ...
Meeting Document : CCAMLR-XXIX/19 : Autor(es): Secretariat
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To what extent do type C killer whales (Orcinus orca) feed on Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea, Antarctica?
Abstract: Information on type C killer whales in the Ross Sea region is reviewed, in particular ... potential for foraging innovation) means that they are particularly vulnerable to changes in the ecosystem ... . It is also possible that changes in killer whale feeding can affect the structure and stability of ... item for type C killer whales in the Ross Sea: (1) type C killer whales near McMurdo Sound have been ...
Meeting Document : WG-EMM-13/29 : Autor(es): L. Torres, M.H. Pinkerton (New Zealand), R. Pitman, J. Durban (USA) and R. Eisert (New Zealand)
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Pleuragramma antarcticum distribution in the Ross Sea during late austral summer 2013
Pleuragramm antarcticum, including confirmation of the first known nursery ground in Terra Nova Bay. However ... , there is still much unknown about larval fish distribution in the Ross Sea, Antarctica. During a United ... States National Science Foundation research cruise in the late austral summer 2013, we opportunistically ... sampled the icthyoplankton community at 17 locations in the western Ross Sea as well as one location in ...
Meeting Document : WG-EMM-14/38 : Autor(es): C. Brooks and K. Goetz (USA)
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Report of biological observations carried out on board the krill fishing vessel More Sodruzhestva in April to August 1991
fishing vessel More Sodruzhestva in April to August 1991 in Subareas 48.2 and 48.3. The program included ... channichthyids. In general, krill density in Subarea 48.2 was twice as high as that in Subarea 48.3. Catch-per ... dominant in catches taken in April/May in the north-west of Subarea 48.2. Krill of modal sizes 31 to 32 mm ... and 35 to 36 mm made up the bulk of catches in the south-east of the subarea. No by-catch of juvenile ...
Meeting Document : WG-KRILL-92/06 : Autor(es): V.I. Latogursky (Russia)
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Monitoring Antarctic toothfish (D. mawsoni) recruitment in the southern Ross Sea
was started in 2012. The first year established the feasibility of carrying out a random stratified ... total length, 5–10 year old, Antarctic toothfish. The results suggest a decline in toothfish abundance ... data show the appearance of a strong year class in 2012 which progressed through each year to 2017 and ... the appearance of a second strong year class in 2016. Although the changes in age frequency were ...
Meeting Document : WG-FSA-17/57 : Autor(es): S.M. Hanchet, S. Mormede, S. Parker, K. Large, A. Dunn and B. Sharp
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LIFE HISTORY BUFFERING IN ANTARCTIC MAMMALS AND BIRDS AGAINST CHANGING PATTERNS OF CLIMATE AND ENVIRONMENTAL VARIATION
interannual variation in fitness. These species maximise fitness by keeping a low inter-annual variance in the ... survival of adults and in their propensity to breed annually, which are the vital rates that influence most ... the variability in population growth rate (λ). All these species have been able to buffer these rates ... against the effects of recent climate-driven habitat changes except for Antarctic fur seals, in the ...
Meeting Document : WG-EMM-08/P05 : Autor(es): J. Forcada, P.N. Trathan and E.J. Murphy
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AN ASSESSMENT OF ARTIFICIAL BAIT (NORBAIT™) AS A MEANS OF REDUCING THE INCIDENTAL CATCH OF MACROURUS AND OTHER BYCATCH SPECIES IN HIGH LATITUDE TOOTHFISH FISHERIES
(rattails) and other bycatch species in the toothfish autoline longline fishery. A company vessel carried ... out some initial experimental work in the western Ross Sea (CCAMLR Statistical Subarea 88.1) in 2007 ... Aspiring operating in the waters of South Georgia and the South Sandwich Islands (CCAMLR Statistical ... were set in both Subareas; a total of 137,000 experimental hooks. The evaluation was based on ...
Meeting Document : WG-FSA-08/52 : Autor(es): J.M. Fenaughty (New Zealand)
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Factors influencing Antarctic krill distribution in the South Shetlands
Abstract: The influences of biological and physical factors in the environment upon krill ... (Euphausia superba) distribution were studies in the area north of South Shetland Islands during 1990/91 ... austral summer. Krill showed a distinct offshore-inshore heterogeneities in abundance and maturity stage ... in mid-summer the abundance was low in the oceanic zone (8.5 g/m2), while higher in the slope frontal ...
Meeting Document : WG-KRILL-93/38 : Autor(es): T. Ichii, H. Ishii and M. Naganobu (Japan)
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Revised research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Subarea 48.6
began in 2013 in data-poor fisheries. In the present report, the next three-season (2016-18) research ... plan in Subarea 48.6 was revised using the updated CCAMLR C2 and Observer data. The stock sizes for ... Dissostichus mawsoni in block 48.6_2. However, the estimates using the Petersen estimator were two-three times ... larger than those using the CPUE method in the block 48.6_3 and 48.6_4. Predicted numbers of tag ...
Meeting Document : WG-FSA-15/16 Rev. 1 : Autor(es): Delegation of Japan