Résultats de la recherche
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Long term variability in the diet and reproductive performance of penguins at Bird Island, South Georgia
and were the main prey in 12 years, with Champsocephalus gunnari and Lepidonotothen larseni the most ... patterns of gentoo penguin diet variability with those of macaroni penguins Eudyptes chrysolophus breeding ... Abstract: Inter-annual variability in diet during crèche (December to February) over 22 years ... present in 89 % of samples and were the main prey (> 50 % by mass) in 10 years of the study. Antarctic ...
Meeting Document : WG-EMM-17/P02 : Auteur(s): C.M. Waluda, S.L. Hill, H.J. Peat and P.N. Trathan
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A RISK ASSESSMENT TO ADVISE ON STRATEGIES FOR SUBDIVIDING A PRECAUTIONARY CATCH LIMIT AMONG SMALL-SCALE MANAGEMENT UNITS DURING STAGE 1 OF THE STAGED DEVELOPMENT OF THE KRILL FISHERY IN SUBAREAS 48.1, 48.2, AND 48.3.
level. Relative to Fishing Options 2 and 3, fishery performance under Option 4 is also poor, with ... . (2008) to assess the risks and tradeoffs associated with various management strategies for subdividing ... selecting among Fishing Options 2, 3, and 4 are tradeoffs between the risks to predator populations and ... of Fishing Option 3 will also require substantive fishery operations in pelagic SSMUs, but, if krill ...
Meeting Document : WG-EMM-08/30 : Auteur(s): G.M. Watters, J.T. Hinke (USA) and S. Hill (United Kingdom)
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UK: 48.3 Assessment Summary
observation using a GLM with factors nationality, year, month, depth band, area and cetacean presence. The ... proportion of lines on which cetaceans are observed. Early catch doesn’t quite match with Hillary 2006 ... Processing A GLM with factors nationality, year, month, depth band, area and cetacean presence is applied to ... season (in year recaptures are deducted from the releases), and within 4 years · Recapture length between ...
Document : Site Section: Meetings
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Volume 9: CCAMLR. 1997. Statistical Bulletin, Vol. 9 (1987–1996). CCAMLR, Hobart, Australia.
-year 1 July to 30 June. Split-years are shown for instance as 1989/90. 1.5 Some tables describe ... country .................................. . Catch by species and arealsubarealdivision ... ........................... . Catch by species-group and month ................................... . Catch by country, species and ... .................. . Catch and effort by species and country .............................. . Catch and effort by ...
Document : Site Section: Publications
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Standardization of fishing effort for Champsocephalus gunnari in the South Georgia area (Subarea 48.3)
different classes (countries, types of vessel, fishing gear, months and years). Multiple regression is used ... Numbers: 3 2 10 10 Year Total Catch Catch Rate Prop. Mean SE Effort 1981 29464 0.249 2.083 0.765 ... changes with the passage of time. The method of standardizing fishing effort based on a multiplicative ... example, type of vessel, fishing division, month within year and finally fishing year may be considered ... certain year. A standardized value for catch-per-effort for a given type of category is calculated by ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 327–336 : Auteur(s): Gasiukov, P.S.
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Estimating toothfish biomass in Subarea 48.3 using local depletions
of 12’ by 12’ where there had been forty or more hauls in any particular year. There were 62 ... . Applying a Leslie method we derived toothfish densities in these areas which were linearly correlated with ... the initial CPUE experienced by the fishing vessels. Using this correlation, combined with the average ... means of estimating toothfish density at South Georgia. Over the four years 2000-2003, we found 25 areas ...
Meeting Document : WG-FSA-SAM-04/18 : Auteur(s): Pearce, J., Agnew, D.
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Modelling growth of Antarctic krill: a new approach to describing the growth trajectory
from direct measurements of individual pre- and post-moult krill sampled from the wild with a model of ... temperature-dependent intermoult period. Using summer and early autumn data for juveniles and males sampled ...
Meeting Document : WG-EMM-05/27 : Auteur(s): S. Candy and S. Kawaguchi (Australia)
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APPLICATION TO UNDERTAKE WINTER SCIENTIFIC RESEARCH IN CCAMLR SUBAREA 88.1 (SSRUS 88.1B, 88.1C AND 88.1G) IN THE 2008/09 SEASON
in CCAMLR SSRUs 88.1B, 88.1C and, ice permitting, 88.1G in 2008/09, as the first in a three year time ... collect information that should assist in the understanding of the early life history and reproduction of ... accordance with Conservation Measures 24-01, 33-03, 41-01 and 41-09. Author(s): Delegation of New Zealand ...
Meeting Document : WG-FSA-08/62 : Auteur(s): Delegation of New Zealand
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The use of predator-derived krill length-frequency distributions to calculate krill target strength
from land-based predators directly with automated on-board data collection systems it will be possible ... with acoustic surveys of krill). In a year such as 1994, when krill length at South Georgia changed ... simultaneous length-frequency data. By integrating data from land-based predators directly with automated on ... to be independent to avoid interrelated estimates. For South Georgia, there is a 20-year time ... with research cruises. There is increasing evidence that both the population structure and ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 155–163 : Auteur(s): Reid, K. and A.S. Brierley
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Net-based verification of acoustic techniques used to identify Antarctic krill
' using an SDWBA-derived range for Sv120-3, (iii) '2 freq 2-16'- with an Sv120-38 range ... of 2-16 dB and (iv) '2 freq 2-12'-with an Sv120-38 range of 2-12 dB The '3 freq model ... orientation distributions for the two cruises were estimated with the SDWBA model, with cruise specific ... orientation distributions applied the performance of the '3 freq model' was comparable with the two ...
Meeting Document : SG-ASAM-09/04 : Auteur(s): J. Watkins and S. Fielding (United Kingdom)