Search results
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Reproductive performance of seabirds and seals at South Georgia and Signy Island, South Orkney Islands, 1976-1987: implications for Southern Ocean monitoring studies
Y qepHo6pOBOfO, CepOfOJJOBOfO I1 CTpaHcTBy~efo aJJb6aTpOCOB, nanyaccKofO I1 30JIOTOBOJJOCOfO nI1HfBI1HOB I1 IO ... reviewed. Breeding success of the wandering albatross, which breeds in winter and eats fish and squid, has ... fluctuations in reproductive performance of the krill-eating, summer-breeding penguins at Signy Island are not ... in 1980-81 and 1982-83) with the date of ice break-out in late spring. Numerous parameters of ... / Description: Aspects of the reproductive performance over the last decade of black-browed, grey-headed and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 445-447 : Author(s): Croxall, J.P., T.S. McCann, P.A. Prince and P. Rothery
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Near-shore acoustic surveys for Antarctic krill at South Georgia, January 2004
the length distribution of krill sampled from fur seal scats at Bird Island (mean krill length 53.13 mm, TS ... =-38.43 dB kg-1). Mean krill densities were 7.1 g m-2 off the Barff Peninsula and 5.7 g m-2 around ... of krill sampled from fur seal scats at Bird Island (mean krill length 53.13 mm, TS = -38.43 dB kg-1). Mean ...
Meeting Document : WG-EMM-04/35 : Author(s): A.S. Brierley, P.N. Trathan, J. Poncet and A. Morton (United Kingdom)
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Phytoplankton standing stocks in relation to krill in Antarctic waters
phytoplankton and zooplankton in the region of krill swarm however showed active feeding by the latter on these ... Abstract: Investigations on krill trawl operations in the southern ocean were accompanied by the ... , consisting of 32 diatoms and one dinoflagellete. Chaetoceros and Nitzschia spp. dominated the phytoplankton ... to 2400 kg, the percentage of kill occurrence varied from 0 to 100% at stations sampled. The ...
Meeting Document : WG-EMM-98/34 : Author(s): X.N. Verlecar, R. Vijayakumar, F. Saldhana and L. Martins (India)
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Spatial variability and power to detect regional-scale trends
-site monitoring scenarios. Under the conservative, hypothetical scenarios we examined, monitoring ... around 6 sites in a region under conservative criteria of a 2-tailed test and alpha = 0.10. However ... , fewer sites were required for less conservative criteria; using a 1-tailed test instead of a 2-tailed ... -site monitoring scenarios. Under the conservative, hypothetical scenarios we examined, monitoring ...
Meeting Document : WG-EMM-03/47 : Author(s): C. Southwell and L. Emmerson (Australia)
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Analysis of anomalous CPUE data from data-poor exploratory fisheries
mean and high variability, arising from periods of repeated low/zero catches and highly spatially ... in Divisions 58.4.1, 58.4.2 and subarea 48.6. These differences are reflected in CPUEs with large mean and high ...
Meeting Document : WG-FSA-12/07 : Author(s): Secretariat and Delegation of the Republic of Korea
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Hook loss in CCAMLR exploratory fisheries
lines requires an estimate of the number of lost hooks that are attached to sections of line. In 2011 ... attached to sections of lines. In 2012 15 of the 26 vessel/fishery reports provided non-zero data with an ... to be reiterated in order to achieve a greater level of engagement with the requirements to complete ... Abstract: The development of methods to estimate unaccounted fishing mortality from lost fishing ...
Meeting Document : WG-FSA-12/65 : Author(s): Secretariat
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Pup production and distribution of breeding Antarctic fur seals (Arctocephalus gazella) at South Georgia
the rate of increase in pup production has declined since the initial period of population expansion ... in the 1950s and 1960s. Increased population size has led to an expansion of the breeding range at ... Abstract: A census of the breeding population of Antarctic fur seals (Arctocephalus gazella) at ... South Georgia was carried out during the 1990/91 breeding season. Using counts of adult females ashore ...
Meeting Document : WG-CEMP-92/39 : Author(s): I.L. Boyd (United Kingdom)
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Brief report on scientific observation on the fishery vessel Mellas (FAO Statistical Area 41, January to July 2006)
Abstract: Materials on results of scientific observation in fishery cruise on the longliner ... ) fisheries are submitted. The data on volume of the biological material collected in the cruise, the data on ... “Mellas”, operating under the Ukrainian flag in FAO statistical area 41 in the southwest Atlantic outside ... exclusive (sea) economic zones of the foreign states at Patagonian toothfish (Dissostichus eleginoides ...
Meeting Document : WG-FSA-06/13 : Author(s): S. Usachev (Ukraine)
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Discrimination of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) using otolith morphometrics
species of grenadier in the Ross Sea region means that, at the time of writing, there are insufficient ... , years) from otolith morphometrics. ‘RMS’ is the root-mean square error of the prediction. Species ... using otolith morphometrics to reach 80% of the mean maximum length and one specimen was aged at 62 ... fishery in the Ross Sea region is comprised of two species, rather than being solely Macrourus whitsoni ... , was recognised in 2010 with the identification of a new species, M. caml. Grenadier are the main by ... the abundance of toothfish reduces. In order to improve information on the spatial distribution, age ... otolith morphometrics Abstract / Description: That the predominant by-catch of grenadier by the toothfish ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 15–28 : Author(s): Pinkerton, M.H., C. Ó Maolagáin, J. Forman and P. Marriott
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Does large-scale ocean circulation structure life history connectivity in Antarctic toothfish (Dissostichus mawsoni)?
: successfully spawning fish spend only a part of their adult life history in the Ross Sea; areas in the eastern ... (Dissostichus mawsoni) in the Southeast Pacific Basin (SPB) and Ross Sea, with a life history structured by the ... environmental heterogeneity, yet the chemistry in otolith nuclei, deposited during early life, showed no ... differences. Age data showed only adult fish in catches on the Pacific-Antarctic Ridge in the SPB; and ...
Meeting Document : WG-FSA-12/P02 : Author(s): J. Ashford, M. Dinniman, C. Brooks, A. Andrews, E. Hofmann, G. Cailliet, C. Jones and N. Ramanna