Search results
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Linking acoustic scattering coefficient to krill fishery data: feasibility of estimating krill abundance using fishing survey
that at night, with the maximum NASC between 160 and 180 m in depth. Both CPUA and CPUE at the ... -sample t-test analysis shows that a significant correlation existed between NASC and CPUA, the equation ... abundance based on fishery data. The results showed that average catch of daytime trawls was significantly ... thinner than that at night. At the depth of over 100 m, the average NASC during the daytime is higher than ...
Meeting Document : WG-EMM-17/44 : Author(s): T. Wang, G.P. Zhu, J.F. Tong and L.X. Xu
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Habituation to an acoustic harassment device (AHD) by killer whales depredating demersal longlines
activations of the AHD. When tested through Generalized Linear Mixed Models (GLMMs), the effect of AHD ... of the AHD. When tested through Generalized Linear Mixed Models (GLMMs), the effect of AHD activation ...
Meeting Document : WG-FSA-14/P04 : Author(s): P. Tixier, N. Gasco, G. Duhamel and C. Guinet
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Distribution of Soviet commercial fleet at krill fishery in the South Orkneys subarea (Subarea 48.2) during 1989/90
fleet (2.5 t/hour) in the next to the last five days of November. After disintegration of that ... Coronation Island. Incidentally, CPUE shows regular intraseasonal variations from minimum (3.2 t/hour) in ... November to maximum (9.6 t/hour and 11.0 t/hour respectively) in February and March, and again decreases to ... 6.9-7.1 t/hour by May-June. Stability of the fishing ground is stipulated by peculiarities of the area ...
Meeting Document : WG-EMM-97/50 : Author(s): Sushin, V.A.
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The direct impact of fishing and fishery-related activities on marine life in the CCAMLR Convention Area with particular emphasis on longline fishing and its impact on albatrosses and petrels – a review
and Iles Kerguelen. The fishery extended further south for a few years in the second half of the 1970039 ...
Meeting Document : SC-CAMLR-XIX/BG/11 : Author(s): Delegation of Germany
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Analysis of catch and effort data in SSRUs 882A–B North from the 2015 fishing season including comparisons with data from exploratory fisheries and closed areas
Norway noted that they would perform an analysis of CPUE variability, haul duration and haul speed from ... the 2015 survey of the northern region of SSRUs 88.2A–B, including a comparison with all exploratory ... fisheries and closed areas. The analysis showed that overall, the CPUE rates observed in the survey were ... within the range of that observed in other exploratory fisheries and similar to those typically observed ...
Meeting Document : WG-SAM-16/16 Rev. 1 : Author(s): K. Large, A. Dunn, S.J. Parker, T. Earl, C. Darby, M. Söffker and O.R. Godø
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Using production models to assess the stock of Paralomis spinosissima around South Georgia Island
removals should not be greater than the number of crabs that recruit to the fishery during the course of a ... (TAC) for the 1993/94 crab fishery. An optimal TAC was determined to be about 300 t. However, this TAC ... x 10-7 ≤ q ≤ 9.49 x 10-7) ≈ 0.95; and Pr(0.00804 ≤ a ≤ 0.00890) ≈ 0.95. Assuming that fishery ... histograms were constructed and showed that growth was probably not the primary recruitment mechanism. Since ...
Meeting Document : WG-FSA-93/23 : Author(s): George Watters (USA)
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Fish stock assessment survey in Subarea 48.3, 2004
bottom trawl survey the research was extended by a week in order that further investigations into the use ... of acoustic methods for the determination of icefish biomass could be undertaken. Following the ... recommendations of the CCAMLR subgroup on fisheries acoustics (WG –SFA) emphasis was to be put on obtaining ... (s): M. Belchier, M. Purves, M. Collins, S. Hawkins, T. Marlow, R. Mitchell, J. Szlakowski and J ...
Meeting Document : WG-FSA-04/85 : Author(s): M. Belchier, M. Purves, M. Collins, S. Hawkins, T. Marlow, R. Mitchell, J. Szlakowski and J. Xavier (United Kingdom)
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Spatio–temporal dynamics in maturation and spawning of Patagonian toothfish Dissostichus eleginoides on the subantarctic Kerguelen Plateau
throughout the late autumn and winter months of May–August, and spawning activity is concentrated on slopes ... the late autumn and winter months of May–August, and spawning activity is concentrated on slopes ...
Meeting Document : WG-FSA-17/P04 : Author(s): P. Yates, P. Ziegler, D. Welsford, J. McIvor, B. Farmer and E.Woodcock
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Winter distribution and condition of Antarctic krill in relation to sea-ice and water column production in the South Shetland Islands during Austral Winter 2013
stations around the South Shetland Islands during a 30 day cruise between 10 August and 9 September 2013 ... around the South Shetland Islands during a 30 day cruise between 10 August and 9 September 2013 ...
Meeting Document : WG-EMM-14/13 : Author(s): C.S. Reiss, J. Walsh, K. Dietrich and J.A. Santora (USA)
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Observation of fishing operation and distributional behaviour of krill on a krill trawler off Wilkes Land during the 1985/86 season
judge the towing direction. Size of fished swarms ranged from 100 m to 10 km with different distribution ... was thought to be a good index to measure abundance of concentration. Comparison of such index across ... time and space may have difficulties in standardization when data from different vessels are to be used ... . Author(s): T. Ichii (Japan) Title: Observation of fishing operation and distributional behaviour of ...
Meeting Document : SC-CAMLR-VI/BG/35 : Author(s): T. Ichii (Japan)