Search results
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Annual report of research fishing operations at Division 58.4.3a in the 2017/18 fishing season
Abstract: This paper presents the annual report of a multi-Member longline survey on Patagonian ... tonnes of D. eleginoides in 58.4.3a. The data set, C2 and Observer data, were provided by the CCAMLR ... used for reporting the quantity of data, samples collected, and results of analysis as a progress ... fishing season which means that some data may not be reflected in tables and figures at the time of ...
Meeting Document : WG-FSA-18/50 : Author(s): Delegations of France and Japan
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Meta-analysis of catch reporting in CCAMLR exploratory fisheries
Abstract: The Secretariat has prepared a meta-analysis of the target and by-catch reported in ... CCAMLR exploratory fisheries (as an update to WG-FSA-15/04 Rev. 1). The number of fish belonging to ... target species divided by the total number of fish caught (the target catch ratio) is used as simple ... metric of the relative level of target and by-catch reported for each haul. This index showed little ...
Meeting Document : WG-FSA-18/14 : Author(s): CCAMLR Secretariat
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The factors causing impact on the toothfish catch estimation on board of fishing vessels
Abstract: The toothfish catch estimation on board of fishing vessels at the CCAMLR area is being ... measurement equipment. Besides, until today the “green weight” of the toothfish catch on fishing vessels was ... not estimated directly, but by calculation, based on the weight of the production using appropriate ... the informational communication on board of fishing vessels, can lead to a significant distortion of ...
Meeting Document : WG-SAM-2019/14 : Author(s): K. Demianenko, P. Zabroda, I. Slypko, L. Pshenichnov, A. Bazhan, O. Diripasko and D. Marichev
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Detection of predator dive patterns from stationary echosounder data
Abstract: Standard protocols for processing of echosounder data are geared towards the estimation ... of biomass indices of pelagic organisms. More transient visitors to the watercolumn however also give ... echoes, and the data provided by the echosounders may be used to assess the behaviour of these organisms ... clear patterns in the dive data with regards to time of year as well as time of day. At the temporal ...
Meeting Document : WG-EMM-2019/34 : Author(s): T. Klevjer and G. Skaret
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A small unmanned aerial system for estimating abundance and size of Antarctic predators
Abstract: Quantifying the distribution and abundance of predators is integral to many ecological ... studies, but can be difficult in remote settings such as Antarctica. Recent advances in the development of ... new tool for studying the distribution and abundance of predator populations. We detail our experience ... from the first use of VTOLs for estimating abundance, colony area, and density of krilldependent ...
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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An updated descriptive analysis of the toothfish (Dissostichus spp.) tagging programme in Subareas 88.1 and 88.2 up to 2005/06
Abstract: A descriptive analysis of the toothfish tagging programme carried out in Subareas 88.1 ... still only available for about half of the non-New Zealand vessels for 2003-04. A reported total of 10 ... . About 17% of the recaptures could not be matched to a release observation, mainly because of missing ... ;80%) of Antarctic toothfish have moved less than 50 km. Sub adult fish (80–100 cm) have tended to ...
Meeting Document : WG-FSA-06/34 : Author(s): A. Dunn and S.M. Hanchet (New Zealand)
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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 ... . eatonii and B. irrasa are most abundant to the north and northwest of Heard Island out to the edge of the ... EEZ, and down to depths of 1100m and 1500m respectively. B. irrasa occurs much deeper, down to 2300m ... 700m, and are most abundant close to Heard Island to the north and northeast. The catch rates of skates ...
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)
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ECOLOGICAL REPERCUSSIONS OF HISTORICAL FISH EXTRACTION FROM THE SOUTHERN OCEAN
Abstract: A major mid-1980s shift in ecological structure of significant portions of the Southern ... Ocean was partially due to the serial depletion of fish by intensive industrial fishing, rather than ... stocks were on average reduced to <50%, and finally (mid-1980s) to <20%, of original size. Despite ... strong year classes, as is true of such fish elsewhere. A climate regime, the Southern Annular Mode, once ...
Meeting Document : WG-EMM-08/P07 : Author(s): D. Ainley and L. Blight
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A REVIEW OF BIAS AND UNCERTAINTY IN ANTARCTIC PACK-ICE SEAL ABUNDANCE ESTIMATES
Abstract: While the joint CCAMLR-IWC workshop will consider a number of parameters for species ... of pack-ice seals focuses primarily on abundance and to a lesser extent trends in abundance. The ... review addresses population surveys and abundance estimates for the four species of phocid seal commonly ... spatial scope covers the circumpolar extent of pack-ice, and the temporal scope spans a period of more ...
Meeting Document : CCAMLR-IWC-WS-08/06 : Author(s): Steinhage, D., Bengtson, J., Blix, A.S., Bester, M., Boveng, P., Laake, J., Cameron, M., Nordøy, E., Forcada, J., Stewart, B., Southwell, C., Trathan, P., Rogers, T., Plotz, J., Bornemann, H.
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Species variability and population structure of Euphausiacea in Admiralty Bay (King George Island; South Shetland Islands) during Antarctic summer
Abstract: The main component of zooplankton in Antarctic pelagic waters, apart from copepods or ... of the penguins and pinnipeds’ diet. Admiralty Bay, because of its specific hydrological conditions ... , is an interesting area for that kind of biological study. Moreover, King George Island, where ... Admiralty Bay is located, is a region of dynamic climate characterized by variable maritime conditions which ...
Meeting Document : WG-EMM-14/60 : Author(s): A. Panasiuk-Chodnicka, J. Wawrzynek and M. Iwona Żmijewska (Poland)