Search results
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A RE-ANALYSIS AND UPDATE OF THE ANTARCTIC KRILL BIOMASS IN THE SOUTH SHETLAND ISLANDS, THROUGH 2011
-based estimates of krill density and recruitment are recalculated for the years 1996 through 2011 ... . Recent changes in the acoustic methodology and target strength models are the basis for the recalculation ... . The time series of acoustic biomass indicate that krill have varied by more than an order of magnitude ... over this time period. Current estimates for the South Shetland Islands region are 3.6, 1.9 and 1.35 ...
Meeting Document : WG-EMM-11/26 : Author(s): A. Cossio, C. Reiss and R. Driscoll (USA)
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Note on maturity of krill in relation to interannual fluctuations of food environment in the seas around the South Shetland Islands
Abstract: Relationship between food environment and maturity of krill around the South Shetland ... fraction larger than 2um was high, feeding activity of krill was also high in the natural environment. 5 ... high when the feeding activity of the krill was high through out the season. Therefore, interannual ... fluctuations of maturity populations are governed by the food environment, the phytoplankton stock in the size ...
Meeting Document : WG-KRILL-93/27 : Author(s): M. Naganobu and S. Kawaguchi (Japan)
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The demersal fish communities of the shelf and slope of South Georgia and Shag Rocks (CCAMLR Subarea 48.3)
. The demersal fish assemblage found on the shelf to depths of around 400m is dominated by notothenids ... and is comprised largely of species endemic to the Southern Ocean and Scotia Sea. At increasing depths ... (400-600m) diversity increases with the presence of many benthopelagic species including Stomiiformes ... , Aulopiformes and Zoarcids. At the greatest depths sampled the demersal fish community is dominated by ...
Meeting Document : WG-FSA-14/26 : Author(s): S. Gregory, M.A. Collins and M. Belchier (United Kingdom)
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The proposal of Availability Index to summarise the availability of harvested resources
Abstract: The solution of problems of conservation the Antarctic marina living resources and, at ... the same time, maintenance of their rational use, requires possession of up-to-date information that ... proposed a specific indicator – "Availability Index (AI)", which accumulates the all existing ... information on availability of the specific marina living resources for fishery. The availability index can be ...
Meeting Document : WG-EMM-16/57 : Author(s): K. Demianenko and G. Milinevskyi
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The impact of the hake Merluccus spp. longline fishery off South Africa on Procellariiform seabirds
Abstract: In 1994, an experimental longline fisheri for hake Merluccius spp. commenced in the ... supplemented by ship-based observers on several vessels. Longlines are set at night, and the white-chinned ... petrel Procellaria aequinoctialis was the only seabird species caught while attempting to scavenge bait ... capense were killed during hauling operations. The hake longline fishery is estimated to kill 8000 ± 6400 ...
Meeting Document : WG-FSA-97/55 : Author(s): Boix-Hinzen, C., Barnes, K.N., Ryan, P.G.
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Using effective sample sizes to evaluate the efficiency of length samples collected by at-sea observers in the krill fishery in Subarea 48.1
, collecting length data from the catch is a task undertaken by all at sea observes in CCAMLR fisheries ... . Although analyses in the past have looked to the optimal design of the observer program, in terms of levels ... characterise how many krill are measured by observers, and for how many hauls. We then simulate the impact of ... different haul-wise sample sizes on the ability to estimate mean length in a sample per SSMU × month ...
Meeting Document : WG-SAM-16/39 : Author(s): N. Kelly, S. Kawaguchi, P. Ziegler and D. Welsford
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The value of marine resources harvested in the CCAMLR Convention Area – an assessment of GVP
Abstract: In 2015, the Commission identified eleven tasks (Tasks i to xi) for ongoing ... consideration by the Intersessional Correspondence Group – Sustainable Financing (CCAMLR-XXXIV, paragraph 4.5 ... ). In early 2016, noting specific direction from the Commission regarding additional consideration of ... the administrative component of notification fees (see CCAMLR-XXXV/11), the ICG-SF, using the ...
Meeting Document : CCAMLR-XXXV/10 : Author(s): CCAMLR Secretariat
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Results of the scientific research survey in CCAMLR Subarea 88.3 in the 2004/05 season
Abstract: Results from the New Zealand research survey in CCAMLR Subarea 88.3 in February 2005 ... are presented. While ice conditions prevented the successful completion of the full research plan as ... -recruit D. mawsoni were caught at much greater depths than occurs in the other Subareas of Area 88. This ... result has significant implications for future trawl surveys in this area. The catch rate obtained on one ...
Meeting Document : WG-FSA-05/53 : Author(s): G. Patchell (New Zealand)
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A preliminary examination of the length–weight relationship in Dissostichus eleginoides and D. mawsoni using data from the CCAMLR Scheme of Scientific Observation
Abstract: An investigation into use the length-weight relationship of Dissostichus eleginoides ... and D. mawsoni to separate the two species was undertaken using data from the CCAMLR Scheme of ... Scientific Observation. Although the ability to discriminate the two species using length and weight ... measurement was inconclusive the process provided an opportunity to examine the variation in biometrics of ...
Meeting Document : WG-FSA-11/21 : Author(s): Secretariat
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EVALUATION OF VME TAXA MONITORING BY OBSERVERS FROM FIVE VESSELS IN THE ROSS SEA REGION ANTARCTIC TOOTHFISH LONGLINE FISHERIES DURING THE 2008-09 SEASON
Abstract: Conservation Measure 22-07 (2008) requires vessels fishing in the Ross Sea region (and ... these samples for subsequent onshore classification by taxonomists. Comparison of the observer’s ... classification versus the taxonomist’s classification showed that for most groups, the observer classifications ... materials; stylasterids and gorgonians. Errors in other groups indicated the observers did not always record ...
Meeting Document : TASO-09/08 : Author(s): Carter, M., Parker, S.J., Mormede, S., Tracey, D.M.