Search results
-
Density and geographical distribution of krill larvae on the Weddell – Scotia Confluence region during summer 2011
Abstract: The analysis of euphausiid larvae collected during january 2011 in the Weddell Scotia ... Confluence region show a strong decrease in the abundance of Euphausia superba larvae and an increase in ... associations of the different larvae and especies correspond to the available information. The densities ... observed during the cruise were compared with densities obtained in 1981 and 1995 calculating expected ...
Meeting Document : WG-EMM-16/51 : Author(s): E. Rombolá, C. Franzosi, G. Tossonotto, V. Alder and E. Marschoff
-
Autoliners and seabird by-catch: do line setters increase the sink rate of integrated weight longlines?
longlines set with and without a line setter were identical, including in the first few metres of the water ... vessels in the Kerguelen and Crozet Islands Patagonian toothfish fisheries to deter seabirds, ostensibly ... by expediting gear sink rates. A trial was conducted in the Ross Sea in 2007 to determine the ... effectiveness of line setters in increasing sink rates of IW longlines. Time-depth recorders were deployed along ...
Meeting Document : WG-FSA-07/13 : Author(s): G. Robertson (Australia), J. Williamson, M. McNeill (New Zealand), S. Candy (Australia) and N. Smith (New Zealand)
-
Evaluating the impact of multi-year research catch limits on overfished toothfish populations
Abstract: In stocks that have been depleted by overfishing, the benefits of additional fisheries ... decades to recover even in the absence of fishing, and apparently low levels of research catches can ... significantly delay the recovery of a stock. Research catches in excess of 0.6% of B0 should be avoided to ... ensure that research doesn’t significantly impact on the recovery of depleted stocks in the long term ...
Meeting Document : WG-FSA-10/42 Rev. 1 : Author(s): D.C. Welsford (Australia)
-
On the intensity of sampling krill trawl catches
between-catches which should be detectable. As far as possible, meaningful account must be taken ... /trawl is necessary to obtain statistically meaningful differences between-samples. * The problem of how ... between-catches which should be detectable. As far as possible, meaningful account must be taken ... /trawl is necessary to obtain statistically meaningful differences between-samples. * The problem of how ...
Meeting Document : WG-KRILL-90/27 : Author(s): D.G.M. Miller (South Africa)
-
Outline for year 3 of the 3-year longline survey to determine toothfish population connectivity between Subareas 48.2 and 48.4
third year of an agreed 3-year longline survey, in the wider context of connecting the recently ... undertaken surveys in Subarea 48.2 with the established fishery in Subarea 48.4. The overall research ... analysis plan leading towards the development of a stock hypothesis for the eastern regions of 48.2 and ... southern regions of 48.4. Author(s): M. Söffker and M. Belchier Title: Outline for year 3 of the 3-year ...
Meeting Document : WG-SAM-18/15 : Author(s): M. Söffker and M. Belchier
-
Pre-spawning and spawning biology of the Patagonian toothfish, Dissostichus eleginoides, around South Georgia (Subarea 48.3)
reproductive part of the Dissostichus eleginoides population in Subarea 48.3. Analysis and synthesis of these ... Abstract: Samples gathered from research expeditions of the longliners Medvezhy (April-June 1986 ... ) as well as Maksheevo and Mirgorod (June-July 1992) have produced new data on the biology of the ... data have established the bathymetric distribution patterns for different size-groups of toothfish ...
Meeting Document : WG-FSA-92/13 : Author(s): I.N. Konforkin and A.N. Kozlov (VNIRO, Moscow, Russia)
-
Fish prey of the wandering albatross Diomedea exulans at South Georgia
caught in the commercial fishery there. However, two of the three main target species of this fishery in ... Abstract: The fish diet (45% of total diet by weight) of Wandering Albatrosses rearing chicks at ... South Georgia during the austral winters of 1983 and 1984 was investigated using otoliths retrieved from ... regurgitations. These provide the first quantitative data for this species and for any albatross. By number of ...
Meeting Document : SC-CAMLR-VII/BG/05 : Author(s): J.P. Croxall, A.W. North and P.A. Prince (United Kingdom)
-
Preliminary results of the E.L. Holmberg 1994 cruise to Subareas 48.3 and 48.2
in Subarea 48.3 on a random stratified des n are used to estimate the standing stocks of the main ... South Georgia Islands. In the Scotia Sea the boundary of the Weddell-Scotia confluence was found within ... surface water temperature of about-0.5 to-1.0 in a period of approximately 20 days was detected around ... the spatial structure of fish populations significantly affects the results of biomass estimates ...
Meeting Document : WG-FSA-94/29 : Author(s): E.R. Marschoff, B. Prenski, B. Gonzalez, C. Remaggi and C. Balestrini (Argentina)
-
Quantifying the escape mortality of trawl caught Antarctic krill (Euphausia superba)
mortality of krill escaping the trawl nets in our study was 4.4 ± 4.4 %, suggesting that krill are fairly ... tolerant of the capture-and-escape process in trawls. Author(s): B.A. Krafft, L.A. Krag, A. Engås, S ... of which are expected to increase. However, many of the length classes of krill can escape through ... commonly used commercial trawl mesh sizes. A vital component of the overall management of a fishery is to ...
Meeting Document : WG-EMM-16/04 : Author(s): B.A. Krafft, L.A. Krag, A. Engås, S. Nordrum, I. Bruheim and B. Herrmann
-
Green krill, the indicator of micro- and nano-size phytoplankton availability to krill
-, nano-, and micro-size fractions) during commercial krill operations in the waters north of the South ... the importance of micro- and nano-size phytoplanktons in terms of food source for the Antarctic krill ... Shetland Islands from late December, 1991 to mid-February, 1992. The proportion of green krill had ... in the natural environment. Author(s): S. Kawaguchi, T. Ichii and M. Naganobu (Japan) Title: Green ...
Meeting Document : WG-EMM-98/29 : Author(s): S. Kawaguchi, T. Ichii and M. Naganobu (Japan)