Search results
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The fishery for Patagonotothen brevicauda guntheri in CCAMLR Subarea 48.3
utilizaron redes ilegales para tales efectos. 1. IN1RODUCfION During the past ten years there has been ... NOT LXX Other Species eS) eW) 1987 Nov 1-10 ANI 54 38 38 0 14 0 0 11-20 ANI 54 38 79 0 29 0 0 21-30 ... 32 30 - 28 - 26 - 24 - 22 - 20 - 18 - 16 - 14 - 12 - 10 ... 9 o 7 6 6 4 3 2 1 o - - - - - - - - - ~ - - - - - - - - - t5 ) \~ I 10 I 11S I 20 21S 30 I 31S T 40 41S I ISO IS IS 80 81S 7i I Size ... Paper Title: The fishery for Patagonotothen brevicauda guntheri in CCAMLR Subarea 48.3 Abstract ... brevicauda guntheri were five times greater in the South Georgia area than at Shag Rocks. Previous survey ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 275–283 : Author(s): Everson, I. and C. Mitchell
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On the intensity of sampling krill trawl catches
stages; • for most purposes a minimum sample size of at least 100 animals/trawl is necessary to obtain ... information on maturity stages; • for most purposes a minimum sample size of at least 100 animals/trawl ... 120 100 90 80 70 60 50 40 30 20 10 30 35 ... 8012, South Africa 29 30 • l'examen des differences minimales de longueurs decelables d'une ... from the aft-quarter of the trawl codend and the lengths of 50, 100 and 150 animals were measured ... . A variable number of animals per sample were also measured until 50 animals in a single 1 mm size class were ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 29–48 : Author(s): Miller, D.G.M.
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A review of data on abundance, trends in abundance, habitat use and diet of ice-breeding seals in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)
, and moulting in mid- to late summer. For the rest of the year, these species spend much of their time ... m in ear- lier surveys). Shipboard survey methods were the same as those used in previous years. The area ... al. (1983); analysis and synthesis of these data with all the data collected in previous years ... (20°E–90°E) and Weddell Sea (20°E–60°W)). The haul-out model developed for crabeater seals ... Paper Title: A review of data on abundance, trends in abundance, habitat use and diet of ice ... -breeding seals in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop) Abstract ... / Description: The development of models of marine ecosystems in the Southern Ocean is becoming increasingly ... . Collating data from disparate sources, and understanding biases or uncertainties inherent in those data, are ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 49–74 : Author(s): Southwell, C., J. Bengtson, M. Bester, A.S. Blix, H. Bornemann, P. Boveng and M. Cameron, J. Forcada, J. Laake, E. Nordøy, J. Plötz, T. Rogers, D. Southwell, D. Steinhage, B.S. Stewart and P. Trathan
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Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) in the Ross Sea region
(Regan, 1913) until samples collected on New Zealand’s International Polar Year Census of Antarctic ... position (Pinkerton et CCAMLR Science, Vol. 20 (2013): 37–61 37 DIstrIbutIon, morphology anD ecology ... - tification of each specimen, measured and weighed them, and then returned whole fish frozen below –20 ... estimates were generated on the assumption that one opaque and one hyaline zone represent one year’s ... , Macrouridae) in the Ross Sea region Abstract / Description: Samples collected in 2008 led to the ... in the Ross Sea region is presented. The number of rays in the left pelvic fin and number of rows of ... teeth in the lower jaw allowed the two species to be distinguished both in the laboratory and by ... CCAMLR Subareas 88.1 and 88.2. There was a small but significant increase in the proportion of M ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 37–61 : Author(s): Pinkerton, M.H., P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown
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Detection and quantitative estimation of krill concentrations by hydroacoustic instruments
operating at comparatively low frequencies (20-30 kHz) are much less sensitive in registering krill ... des appareils hydroacoustiques sur le navire de recherche Odyssee. On a etabli que le sonar SK-l20 ... bajo del programa FIBEX. Se demostro que el aparato hidroacustico Simrad SK-l20, con el TGV ... TeOpeTHqeCKHM paCqeTaM 30Ha 06HapY:>KeHH~ OTAeJI bHbfX oc06eH MO:>KeT 6h[T b 3HaqHTeJIbHO YBeJIHqeHa 3a CqeT ... instruments Abstract / Description: The limited capabilities of existing hydroacoustic instruments in ... in areas surveyed. The task of detecting surface concentrations of krill can be solved with the help ... capable of registering individual krill at a depth of 50–60 m while the vessel is in motion. According to ... expense of a rise in the acoustic power of emission. File: 06-Yudanov.pdf ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 123-139 : Author(s): Yudanov, K.I.
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Modelling krill recruitment
a krill population we need, in each year of a simulation, a random recruitment in terms of number ... of years are independent, identically distributed random variables. However, what we can estimate ... A, is the number of animals in age class i, and n is the age of the oldest age class present in non-negligible ... that: In fact no generality is lost if we put E[A,] = 1 everywhere, and so: If the recruitment in each year ... observed values of the mean proportion of recruits and its variance to model recruitment in a krill ... population in terms of numbers of recruits. The method includes the calculation of natural mortality and ... in the observed recruitment parameters. File: 04delamare-mod-rec.pdf ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 49–54 : Author(s): W.K. de la Mare
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Commercial fishing vessels as research vessels in the Antarctic – requirements and solutions exemplified with a new vessel
of krill has varied dramatically over its 30- to 40-year history. The present annual catch ... in resource surveying has been given sub- stantial attention in recent years (ICES, 2007; Abe et al., 2011 ... years, most new research vessels, and also some fishing vessels, are being equipped with an instrument ... for a 20 ft container laboratory van would be sufficient for those sampling and scientific require- ments ... Paper Title: Commercial fishing vessels as research vessels in the Antarctic – requirements and ... in the ecosystems of the Antarctic region require a precautionary approach with respect to the human ... use of these ecosystems. In particular, resource harvesting requires enough basic knowledge, as well ... the potential of using commercial fishing vessels to bridge the gap in research vessel capacity. The ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 11–17 : Author(s): Godø, O.R., C. Reiss, V. Siegel, J.L. Watkins
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Some comments on the procedure for testing estimators of krill abundance which utilise survey data
. HCnOJIb30BaHHe 3THX ",llByxcTyneH'-IaTbIX" MO,lleJIeti o6ecne'-l- BaeT nOJIY'-leHHe 60JIee TO'-lHbIX nO,llrOHOK ... nOCTpoeHHSI MO,lleJIH. ITpe)l{,lle '-IeM 3TH MO,lleJIH MoryT 6blTb HCnOJIb30BaHbl B Ka'-leCTBe OCHOBbl ... a este respecto. 1. IN1RODUCTION A "straightforward" approach to abundance estimation from surveys ... . An objection that has been raised to this approach is that it is discarding the information on the spatial ... indeed likely to provide improved performance in practice. Such studies require a simple method for ... provide an encouraging improvement in fits to the distribution of inter-swarm distances observed on the ... suggestions are made in this regard. File: 11-Butterworth-et-al.pdf ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 191–205 : Author(s): Butterworth, D.S., D.L. Borchers and D.G.M. Miller
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Analysis of changes in biomass of fish stocks in the South Georgia area in 1976/77-1986/87
stock. High biomass density appeared with 2-4 year intervals after recruiting an abundant year-class ... . High biomass density appeared with 2-4 year intervals after recruiting an abundant year-class ... in the biomass density of C. ~ari stock. High biomass aensity appeared with ~year intervals after recruiting ... an abundant year-class to the exploited stock. The biomass of other bottom species is more stable, especially ... H Notothenia rossii marmorata) B paHoHe ~HOH feoprHH B ce30Hhl 1976/77- 1986/87 rr. HCnOJIb30BaJICH MeTOA ... npOTpaJIeHHhlX nJIO~aAeH. B TeqeHHe 60JIbWHHCTBa npOaHaJIH3HpOBaHHhlX ce30HOB npoBeAeHHaH OQeHKa OXBaThlBaJIa ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 185-211 : Author(s): Mucha, M. and W. Ślósarczyk
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CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their possible utility for evaluation of relative changes in krill biomass
14 16 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 Catch per vessel-days fished (tonnes ... in the Soviet krill fi shery from 1986 to 1991 (RIF statistics). 0 5 10 15 20 25 30 35 ... 1 51 7 0. 20 66 14 0. 66 49 94 30 1 - - - - - - 24 . Su ba re a 48 ... . Compared to the Atlas, the RIF statistics contain from 2 to 78% of data for various years and 34.2 ... Paper Title: CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their ... possible utility for evaluation of relative changes in krill biomass Abstract / Description: Key catch-per ... -unit-effort (CPUE) indices used in Soviet krill fishery statistics, as well as the main sources of data ... fluctuations in haul duration due to the different fishing strategies used when targeting krill intended for ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 165–177 : Author(s): Litvinov, F.F., A.Z. Sundakov and V.I. Arkhipov