Résultats de la recherche
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A hybrid approach to acoustic classification and length estimation of krill
aggregation with probability: C3 = 3C2(1 – C) + C3 = 3(0.833)2(0.167) + (0.833)3 = 0.926. This expression ... r m fj frf k aΔ ≈ . The model has the shape of a two-state low- pass fi lter with the two bends at ... (L) of a euphausiid with equivalent radius (afj / fi ) can be estimated by approximating its trunk ... with an equivalent cylin- der 0.3L in length and 0.1L in diameter (Clay and Medwin, 1977) and equating ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 33–58 : Auteur(s): Azzali, M., I. Leonori and G. Lanciani
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Seabird observations in Subareas 48.1, 48.2 and 88.3 and proposal for a new streamer line design
, carrying out bird observations in each one of the 52 castings with the Spanish-designed longlines as well ... Diomedea melanophrys, with 204 sightings, followed by Oceanities oceanicus, with 77; Catharacta lonnbergi ... , with 40; and Diomedea chrysostoma, with 37. The highest relative abundance was found in Subarea 48.1 ... with I1.I birds/haul, followed by Subareas 48.2 and 88.3 with 7.6 and 5.0 birds/haul, respectively. The ...
Meeting Document : WG-FSA-98/19
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Coopération avec d'autres organisations
The Commission and the Scientific Committee cooperate with intergovernmental and non-governmental ... maintains mutually beneficial relations with a wide range of other multilateral organisations, industry ... Scientific Committee shall co-operate with the Antarctic Treaty Consultative Parties on matters falling ... appropriate, with the Food and Agriculture Organisation of the United Nations and with other Specialised ...
Page : Site Section: The Organisation
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Rapport de pêcherie : Dissostichus eleginoides îles Crozet, dans la ZEE française (sous-zone 58.6)
shown in Table 1. Fishing trials with trawlers have not been continued. In Subarea 58.6, the fishery ... has been conducted using longlines from 1996/97 to the present. The fishery was active all year. A ... Subarea 58.6 are given in Table 1. IUU fishing began in 1996 with a peak and has continued at various ... adjusted for effort (number of hooks) using a loglink function and the Tweedie distribution with variance ...
Document : Site Section: Publications
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Mitigating killer whale depredation on demersal longline fisheries by changing fishing practices
with significant losses for fisheries and potential impacts on wild populations of depredating species ... identify fishing practices that could reduce odontocete depredation, with a focus on killer whales (Orcinus ... orca) interacting with Patagonian toothfish (Dissostichus eleginoides) longliners off the Crozet ... islands. Data collected by fishery observers from 6,013 longline sets between 2003-2013, paired with ...
Meeting Document : WG-FSA-14/P03 : Auteur(s): P. Tixier, J. Vacquie Garcia, N. Gasco, G. Duhamel and C. Guinet
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Gonad analysis of Antarctic toothfish in Subareas 58.4 and 88.3
found to be 0.50, and displayed the tendency of increase with increase in the total length 140 cm. The ... -synchronous type. In the ovaries of growing stage, initial vitellogenic oocytes with approximately 150 ㎛ of ... . Frequency of ovarian development stages of Antarctic toothfish showed the highest proportion with 45.4% at ... the ripe stage, and followed by the growing stage with 25.9% and mature stage with 28.7%. Frequency of ...
Meeting Document : WG-FSA-17/09 : Auteur(s): J. Kim, S.-G. Choi, J. Lee, J. Lee and D. An
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Areas of seabed within selected depth ranges in the South-West Atlantic and Antarctic Peninsula regions of the Southern Ocean
. The co-ordinates are those of the northern, southern, eastern and western limits of each rectangle ... ) 4 Edition 1 1984). -. Boundary % Sea Area in Depth Range Lat (oS) Long CoW) Subdi vis ion N ... Edition 1 1984). Boundary % Sea Area in Depth Range Lat (oS) Long CoW) Subdivision N S E W 0-150 0 ... range (m) 0-50 50-150 150-250 250-500 >500 3 404 4 255 17 020 826 318 342 10 733 22 808 12 075 296 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 49-73 : Auteur(s): Everson, I.
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Soviet proposals for a program of ecosystem monitoring in the Commonwealth Sea and Prydz Bay
three major research directions, the findings of which might then be seen in inter-relation with the ... variables with biological patterns and distributions of species) ; 2. Life-cycle strategies and the ... .11), are envisaged to be regularly conducted with data on physical and chemical parameters of the ... -dwelling seals in the coastal part of the area, should be made in conjunction with the above studies ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 355-362 : Auteur(s): USSR
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APPLYING A TS-PROBE FOR MEASURING ANTARCTIC KRILL (EUPHAUSIA SUPERBA) TARGET STRENGTH IN SITU: PROCEDURES AND DATA ANALYSIS
and analysis with some results for one selected station are presented. A Simrad EK60 split beam system ... transducers with 7o half power beam opening angles. The orientation of the probe was monitored with sensors ... transducer platform with the purpose of measuring the orientation of the organisms. All system communication ... documented through recordings with hull-mounted ship echosounders and verified through net samples. The probe ...
Meeting Document : SG-ASAM-09/13 : Auteur(s): G. Skaret, L. Calise and E. Ona (Norway)
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Selectivity and two biomass measures in an age-based assessment of Antarctic krill (Euphausia superba)
using two forms of selectivity (logistic or double-logistic) with time-constant or annually varying ... samples and (2) hydroacoustic sampling were combined with length-compositions from the nets. Sixteen model ... configurations using different combinations of the two biomass surveys with the various options for modeling ... selectivities were examined. Parameters were estimated in phases with the sequential order of the phases ...
Meeting Document : WG-EMM-15/P07 : Auteur(s): D. Kinzey, G.M. Watters and C.S. Reiss