Search results
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NET-BASED VERIFICATION OF ACOUSTIC TECHNIQUES USED TO IDENTIFY ANTARCTIC KRILL
that were collected during two cruises to the South Georgia region in 1996. For each krill aggregation ... model derived target id window only identified krill in 6 of the 16 nets correctly. The ‘2 freq 2-16 ... ’ algorithm attributed more than 90 % of the total backscatter to krill in all but 1 aggregation with the ‘2 ... krill in 12 out of the 16 nets. The ‘2 freq 2 – 12’ window only attributed more than 90 % of the total ...
Meeting Document : WG-EMM-08/54 : Author(s): J. Watkins and S. Fielding (United Kingdom)
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SUMMARY OF SCIENTIFIC OBSERVATIONS RELATED TO CONSERVATION MEASURES 24-02 (2008), 25-02 (2009), 25-03 (2009) AND 26-01 (2009)
seabird conservation”, 25-02 (2009) “Minimisation of the Incidental Mortality of Seabirds in the Course of ... Longline Fishing or Longline Fishing Research in the Convention Area”, 25-03 (2009) “Minimisation of the ... Incidental Mortality of Seabirds and Marine Mammals in the Course of Trawling in the Convention Area”, 26-01 ... limitations on Euphausia superba in Statistical Subareas 48.1, 48.2, 48.3 and 48.4”. Waste Disposal 2. The ...
Meeting Document : WG-FSA-10/08 : Author(s): Secretariat
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A simulation study of krill fishing by an individual Japanese trawler (SC-CAMLR-VI/BG/37)
commercial fishery. A major inconsistency is found: haul times are a factor of 4-5 times greater in reality ... than in the model. Two ad hoc model modifications are introduced to eliminate this inconsistency ... candidate abundance indices (generally of a CPUE form) for krill biomass in the 600 n.mile square oceanic ... sector modelled are considered, and their performance in response to a variety of ways in which the ...
Meeting Document : WS-KCPUE-89/04 : Author(s): D.S. Butterworth (South Africa)
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A simulation study of krill fishing by an individual JAPANESE trawler
commercial fishery. A major inconsistency is found: haul times are a factor of 4-5 times greater in reality ... than in the model. Two ad hoc model modifications are introduced to eliminate this inconsistency ... candidate abundance indices (generally of a CPUE form) for krill biomass in the 600 n.mile square oceanic ... sector modelled are considered, and their performance in response to a variety of ways in which the ...
Meeting Document : SC-CAMLR-VII/BG/37 : Author(s): D.S. Butterworth (Invited Expert)
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Seabird warp-strike research design
Abstract: The paper documents a protocol for assessing warp strike occurrence for seabirds in ... trawl fisheries, and sets out the sampling plan, forms and protocols used to sample warp strikes in the ... southern squid fishery in 2005 in New Zealand. Results of this sampling are set out in Abraham (unpublished ...
Meeting Document : WG-FSA-05/41 : Author(s): A. Kennedy (New Zealand)
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At-sea distribution and prey selection of Antarctic petrels and commercial fisheries
like seabirds. In the Southern Ocean, there is an extensive fishery for Antarctic krill Euphausia ... operations versus predators is needed to predict fishery-related impacts on krill-dependent predators. In ... Antarctic petrels was limited but varied greatly among and within years, and was high in some periods during ... the non-breeding season. In a second step, we described the length frequency distribution of Antarctic ...
Meeting Document : WG-EMM-16/P15 : Author(s): S. Descamps, A. Tarroux, Y. Cherel, K. Delord, O.R. Godø, A. Kato, B.A. Krafft, S.-H. Lorentsen, Y. Ropert-Coudert, G. Skaret and Ø. Varpe
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Marine debris and fishing gear associated with seabirds at Bird Island, South Georgia, 1994/95
associated with seabirds in the same way as in 1993/1994. In 1994/1995 there was a decrease in both the ... , the decrease is due at least in part to, first, fewer birds examined than last year as a consequence ... of the very low breeding numbers of mollymawks at Bird Island in 1994/1995 and, second, because the ...
Meeting Document : SC-CAMLR-XIV/BG/09 : Author(s): Delegation of the United Kingdom
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A small unmanned aerial system for estimating abundance and size of Antarctic predators
studies, but can be difficult in remote settings such as Antarctica. Recent advances in the development of ... and testing in selecting a VTOL platform for use in remote, windy, perennially overcast settings ... predators in Antarctica, based upon 65 missions flown in 2010/2011 (n = 28) and 2012/2013 (n = 37). We ... -powered VTOLs make them particularly useful in wildlife applications: (1) portability, (2) stability in ...
Meeting Document : WG-EMM-15/P06 : Author(s): M.E. Goebel, W.L. Perryman, J.T. Hinke, D.J. Krause, N.A. Hann, S. Gardner and D.J. LeRoi
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A preliminary population status model for the Patagonian toothfish, Dissostichus eleginoides, on the Kerguelen Plateau (Divisions 58.5.1 and 58.5.2) using CASAL
Patagonian toothfish (Dissostichus eleginoides) fishery in the Southern Ocean outside of the Atlantic sector ... . Analysis of genetic, demographic and tagging data indicates that toothfish form a metapopulation in this ... , commercial and illegal fishing activities in the French and Australian EEZs. This represents a substantial ... step forward in understanding the dynamics and current status of toothfish across the Kerguelen Plateau ...
Meeting Document : WG-SAM-11/20 : Author(s): S.G. Candy (Australia), A. Relot, G. Duhamel (France), D.C. Welsford, A.J. Constable, T.D. Lamb (Australia), P. Pruvost and N. Gasco (France)
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DISTRIBUTION AND ABUNDANCE OF SKATES ON THE KERGUELEN PLATEAU (CCAMLR DIVISIONS 58.5.1 AND 58.5.2)
Abstract: Three species of skates are commonly taken as incidental by-catch in the Patagonian ... Plateau, showing different spatial distributions, linked mainly with depth. In the Australian EEZ, B ... in the HIMI region. The smallest species, B. murrayi, occurs only in the shallower waters down to ... from the trawl fisheries at HIMI are low and do not show any evidence of depletion in the main fishing ...
Meeting Document : WG-FSA-09/43 : Author(s): G.B. Nowara, D.C. Welsford, T. Lamb (Australia), N. Gasco, P. Pruvost and G. Duhamel (France)