Search results
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Status of krill target strength
in single-animal measurements, namely thresholding. Theoretical estimates for the target strength ... of target strength on both animal size and transmit frequency, notwithstanding admitted shortcomings. Some ... recent single-animal measurements of target strength for live euphausiids and euphausiid-re1ated ... in single-animal measurements, namely thresholding. Theoretical estimates for the target strength ...
Meeting Document : WG-KRILL-92/11 : Author(s): K.G. Foote (Norway), D. Chu and T.K. Stanton (USA)
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Demography of Antarctic krill in the Elephant Island area (Antarctic Peninsula) during austral summer 2001
, and the absolute index was RI1 = 131.4 * 1000 m-3, which is among the highest values for the past 20 years ... index was RI1 = 131.4 * 1000 m-3 , which is among the highest values for the past 20 years. The high ... of small size classes, one year old juvenile krill was found. Krill density was significantly higher than ... during the past years (between 198 and 230 krill 1000 m-3, i.e. between 40 and 46 m-2 or 11.3 ...
Meeting Document : WG-EMM-01/10 : Author(s): V. Siegel (Germany), B. Bergström (Sweden), U. Mühlenhardt-Siegel (Germany) and M. Thomasson (Sweden)
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Distribution of krill (Euphausia superba Dana) catches in the South Shetlands and South Orkneys
and South Orkneys Abstract / Description: A set of concentric zones of 20 km width was defined around ... in all years 1988 to 1991. In 1987, 1988 and 1991, 75% of the catch in Subarea 48.2 between December ... ranges and population sizes from the literature are used to show that for some years catches within 100 ... A set of concentric zones of 20 km width was defined around selected colonies of penguins ... square (1 0 longitude by 30' latitude) for each quarter (three months) of the year. Total catches ... in the subarea for the year which is caught in the CPD is given, together with the catch as a percentage ... .c. 70 J:! tfJ 0 () 50 -0 40 a-e 30 20 10 0 0 0 0 N ~ -0 0 0 0 0 0 co ... I .!: I ............... 1988 () ro +- I 0 I - - - 1989 () 50 '0 • ,- 40 I / ~ I _J -. - - 1990 30 . . I tI --20 tI ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 287–303 : Author(s): Agnew, D.J.
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Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula: towards an improved understanding of off-peak census correction factors
0.6 0.8 1.0 Fr ac tio n of m ax im um c ou nt 0 5 10 15 20 25 30 Days since maximum count ... 0 5 10 15 20 25 30 Days since maximum count 0 5 10 15 20 25 30 Days since maximum count Adelie gentoo ... Days since maximum count 0 5 10 15 20 25 30 0 5 10 ... 15 20 25 30 0 5 10 15 20 25 30 gentooAdélie ... Paper Title: Timing of clutch initiation in Pygoscelis penguins on the Antarctic Peninsula ... . In this paper the authors present an analysis relating to both these challenges. Clutch initiation ... Petermann Island) in relation to potential drivers of clutch initiation (e.g. temperature, precipitation ... factor related to the timing of clutch initiation in all three of the penguin species examined (Adélie ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 149–165 : Author(s): Lynch, H.J., W.F. Fagan, R. Naveen, S.G. Trivelpiece and W.Z. Trivelpiece
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The sensitivity of multiple output statistics to input parameters in a krill–predator–fishery ecosystem dynamics model
multiple stochastic simulations of 40 years nominally beginning in 2007 and par- titioned into 20 years ... ., 2004; Hill et al., 2007a; Plagányi and Butterworth, 2012). CCAMLR Science, Vol. 20 (2013): 97–118 ... Vectors 4 18 1 2 144 Catch Vectors 1 15 1 2 30 Threshold density Vector 1 15 1 15 Available fraction ... modelled areas, except for time series where it is the number of relevant modelled years (although ... Paper Title: The sensitivity of multiple output statistics to input parameters in a krill ... strategic frameworks for assessing uncertainty in ecosystem dynamics models. Such models have been used ... within CCAMLR to evaluate options for managing the Antarctic krill fishery in the Scotia Sea and southern ... plausible alternative hypotheses in data-poor situations. Apparent sensitivity is a function of both input ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 97–118 : Author(s): Hill, S.L. and J. Matthews
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Use of a population model to assess the impact of longline fishing on wandering albatross populations
at a rate of 2.29% per year, which concurs with global population trends. Sensitivity analyses of model ... , there is a time lag of 5-10 years before further decreases in population numbers are reflected in the breeding ... population. Also, because wandering albatrosses are long-lived, population growth rates take approximately 30 ... -50 years to stabilize after a perturbation. Consequently, caution must be exercised when interpreting ...
Meeting Document : WG-IMALF-94/08 : Author(s): Coleen L. Moloney, John Cooper, Peter G. Ryan and W. Roy Siegfried (South Africa)
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Report on fishing effort and seabird interactions during the season extension trials in the longline fishery for Patagonian toothfish (Dissostichus eleginoides) in Statistical Division 58.5.2
of seabird mitigation measures since the initial fishing season in 2003. Over the years, CCAMLR has agreed ... to add season extensions from 15-30 April and 15 September- 31 October to the core season. In 2015 ... , CCAMLR XXXIV (para. 5.68) endorsed new pre-season (1-14 April) and post-season (15-30 November) season ... season extension trials were comparable to that during the existing pre-season extension from 15-30 April ...
Meeting Document : WG-FSA-2019/31 : Author(s): P. Ziegler, T. Lamb, S. Wotherspoon and J. Dell
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Data on krill (Euphausia superba Dana) consumption by coastal fishes in Division 58.4.2 (Kosmonavtov and Sodruzhestva Seas)
consumed is between 166 and 450 million tonnes; of this amount fish consume from 30 to 32 million tonnes ... in the Sodruzhestva and Kosmonavtov Seas over many years by the YugNIRO institute. Data obtained from trawl ... for a depth range of 100 to 500 metres in waters between 30 and 80°E. Krill consumption was estimated ... consume from 30 to 32 million tonnes (Lubimova, Shust, 1980 and Shust, 1987). However these extrapolated ... 166 and 450 million tonnes; of this amount fish consume from 30 to 32 million tonnes (Lubimova ... in the Sodruzhestva and Kosmonavtov Seas over many years by the YugNIRO institute. Data obtained from trawl ... for a depth range of 100 to 500 metres in waters between 30 and 80°B. Krill consumption was estimated ... , dont 30 a 32 sont consommees par des poissons (Lubimova and Shust, 1980; Shust, 1987). Cependant, i1 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 305–319 : Author(s): Pakhomov, Y.A., V.A. Bibik and V.V. Gerasimchuk
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Report of the Workshop on data and modelling issues relevant to the planning of a potential Marine Protected Area (MPA) east of the zero meridian in the Weddell Sea (MAUD)
Abstract: The workshop was convened to follow up the agreement in the 2018 meeting of CCAMLR ... years. The workshop that had multi-meber participation had two objectives. First, to discuss ... The workshop was convened to follow up the agreement in the 2018 meeting of CCAMLR on an approach ... collate and enhance information for the sub-area east of the prime meridian over the next few years. ...
Meeting Document : WG-EMM-2019/14 : Author(s): Delegation of Norway
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Scientific Committee representatives
Each of CCAMLR's Members has a designated Scientific Committee representative, who ... of Gothenburg Box 461, SE 405 30 Gothenburg thomas [dot] dahlgren [at] marine [dot] gu [dot] se Ukraine Dr ... Each of CCAMLR's Members has a designated Scientific Committee representative, who is the main ...
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