Resultados de la búsqueda

1. Effect of line sink rate on albatross mortality in the Patagonian toothfish longline fishery

   Paper Title:  Effect of line sink rate on albatross mortality in the Patagonian toothfish longline ... vessels to derive a sink rate and line-weighting regime that would minimise the capture of albatrosses ... /s should greatly reduce the incidental take of albatrosses. For autoline vessels with gear and line ... -setting characteristics similar to the experimental vessel, this sink rate should be achievable with 4 kg ... ) may have affected the line sink-rate measurements. Hook-up rate for the CFL Pioneer was 1/75 s (no ... longline. No further fatalities were recorded, even though the number of albatrosses around the vessel ... ; spacings greater than 70 m had no effect on line sink rates to any of the depths over which measurements ... caught, then every 70 m; with the increase in weight, no more albatrosses were observed to be caught ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 133–150 : Autor(es): Robertson, G.G

2. Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?

   Paper Title:  Seabird by-catch by autoline vessels: do line setters increase the sink rate of ... m –1 lead core) longlines by some autoline vessels in the Kerguelen and Crozet Islands Patagonian ... . A trial was conducted in the Ross Sea to determine the effectiveness of line setters in increasing ... the sink rates of IW longlines. Time-depth recorders were deployed on lines set with and without a ... disengaged as in normal fishing operations. To ensure magazines set with the line setter were set slack (no ... zero (P > 0.1). There was no significant interaction between treatment and TDR position on the ... magazines (P > 0.1). Similarly, there were no significant differences in the sink times between setting ... AUTOLINERS AND SEABIRD BY-CATCH: DO LINE SETTERS INCREASE THE SINK RATE OF INTEGRATED WEIGHT LONGLINES? G ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 107–114 : Autor(es): Robertson, G., J. Williamson, M. McNeill, S.G. Candy and N. Smith

3. Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) in the Ross Sea region

   , Macrouridae) in the Ross Sea region Abstract / Description:  Samples collected in 2008 led to the ... as M. whitsoni. The first comparison of the distribution and ecology of the two species of Macrourus ... in the Ross Sea region is presented. The number of rays in the left pelvic fin and number of rows of ... teeth in the lower jaw allowed the two species to be distinguished both in the laboratory and by ... sig- nificantly larger than the others [t(707), p < 0.001]. There was no statistically significant ... discrepancies observed in the age data. However, there was no systematic bias in the interpretation of the ... at a coarse taxonomic level only. Although there are no studies on the feeding of M. whitsoni or M ... Fishing for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region of the Southern Ocean ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 37–61 : Autor(es): Pinkerton, M.H., P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown

4. Simulation of recovery rates of fish stocks in the South Georgia and Kerguelen Islands areas

   Paper Title:  Simulation of recovery rates of fish stocks in the South Georgia and Kerguelen ... Islands areas Abstract / Description:  The benefits of conservation measures are generally based on the ... rebuilding of the depleted stocks and improvement in yields. It is desirable that such measures be based on ... the expected rate of recovery relative to rates of fishing. A simulation model based on a ... Bertalanffy's equation came from the BIOMASS Scientific Series No. 6, 1985, by K.-H. Kock, G. Duhamel, and J ... ) SIMULATION OF RECOVERY RATES OF FISH STOCKS IN THE SOUTH GEORGIA AND KERGUELEN ISLANDS AREAS R.C ... . Hennemuth, K.D. Bisack and G. Duhamel (USA, France) Abstract The benefits of conservation measures are ... generally based on the rebuilding of the depleted stocks and improvement in yields. It is desirable that ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 229-298 : Autor(es): Hennemuth, R.C., K.D. Bisack and G. Duhamel

5. Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken in the South Georgia area in 1990

   in the South Georgia area in 1990 Abstract / Description:  In January/February 1990 the UK and the ... USSR conducted two research cruises using the vessels RV Hill Cove and RV Akademik Knipovich to study ... the status of the Champsocephalus gunnari stock in the South Georgia area. In February 1990 the size ... 9+ were present in catches. Two peaks in size composition correspond with fish of the 1987 and 1985 ... GUNNARI LONNBERG, 1905 (CHANNICHTHYIDAE) TAKEN IN THE SOUTH GEORGIA AREA IN 1990 P.N. Kochkin ... * * Abstract In January/February 1990 the UK and the USSR conducted two research cruises using the vessels ... RV Hill Cove and RV Akademik Knipovich to study the status of the ChampsocephaZus gunnari stock in ... the South Georgia area. In February 1990 the size composition of catches taken by Akademik Knipovich ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 285–293 : Autor(es): Kochkin, P.N.

6. Estimating unaccounted fishing mortality in the Ross Sea region and Amundsen Sea (CCAMLR Subareas 88.1 and 88.2) bottom longline fisheries targeting Antarctic toothfish

   Paper Title:  Estimating unaccounted fishing mortality in the Ross Sea region and Amundsen Sea ... counted in estimates of total fishing removals or otherwise accounted for in stock assessment models. The ... mortality resulting from the loss of sections of bottom longline gear in the Ross Sea region and Subarea ... average 208 tonnes of Antarctic toothfish mortality may be unaccounted for annually. While the current ... reported sets and applied to sets with no reported hook loss for all fishing effort within the fleet ... Stock assessments rely on estimates of the total mortality resulting from fishing activities. While ... mortality associated with landed and discarded catch is routinely monitored, the mortality resulting from ... the loss of sections of bottom longline gear in the Ross Sea region and Subarea 88.2 Antarc- tic ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 17–30 : Autor(es): Webber, D.N. and S.J. Parker

7. A potential feedback approach to ecosystem-based management: Model Predictive Control of the Antarctic krill fishery

   Control of the Antarctic krill fishery Abstract / Description:  CCAMLR aims to develop a feedback approach ... whether a feedback approach is likely to achieve the multiple objectives that EBM implies in the complex ... Control (MPC) to achieve objectives for a harvested species, its predators and the fishery, in a ... simulation model that incorporates uncertainty and spatial and trophic complexity. The approach adjusted ... predator biomass and the model is therefore a bottom-up model with no top-down effects. The catches from ... inter- val of 100 time-steps when there is no harvesting. The parameters controlling the degree of ... measurements of these variables. In the current study there was no explicit repre- sentation of this inference ... expense of higher biomass variability. The fixed catch strategy has no catch variability but it also has ...

   Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 119–137 : Autor(es): Hill, S.L. and M. Cannon

8. Sensitivity investigation of the SDWBA Antarctic krill target strength model to fatness, material contrast and orientation

   Paper Title:  Sensitivity investigation of the SDWBA Antarctic krill target strength model to ... fatness, material contrast and orientation Abstract / Description:  The distorted-wave Born approximation ... model is recognised as state-of-the-art in predicting acoustic target strength (TS) from fluid-like ... marine organisms. A stochastic version, the so-called SDWBA model, is endorsed by CCAMLR to predict the ... rigorously if the scattering as a function of size and frequency for an individual (i.e. target strength ... modelled (Foote, 1991). In the case of zooplankton, due to the complexity of the scatter- ing processes ... , the acoustical estimates rely on the best aspects of both approaches. In recent decades, large ... et al., 2002; Demer and Conti, 2003). The scattering from an object is given by its form, size and ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 97–122 : Autor(es): Calise, L. and G. Skaret

9. Size and density of krill layers fished by a Japanese trawler in the waters north of Livingston Island in January 1988

   Paper Title:  Size and density of krill layers fished by a Japanese trawler in the waters north of ... Livingston Island in January 1988 Abstract / Description:  The size and density of fishable krill layers in ... the northern waters of Livingston Island were determined during the co-operative survey carried out by ... RV Kaiyo Maru and a Japanese trawler. The mean values of layer length, thickness and surface density ... BY A JAPANESE TRAWLER IN THE WATERS NORTH OF L1VINGSTON ISLAND IN JANUARY 1988 Y. Endo and Y ... . Shimadzu Abstract The size and density of fishable krill layers in the northern waters of Livingston ... Island were determined during the co-operative survey carried out by RV Kaiyo Maru and a Japanese ... trawler. The mean values of layer length, thickness and surface density were 3.25 km, 13.3 m and 228.0 9 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 339–345 : Autor(es): Endo, Y. and Y. Shimadzu

10. Revised age and growth estimates for Antarctic starry skate (Amblyraja georgiana) from the Ross Sea

    ) from the Ross Sea Abstract / Description:  A previous study on the age and growth of Amblyraja ... georgiana in the Ross Sea suggested that these skates initially grow very rapidly for about five years ... and growth in A. georgiana that is radically different from the published interpretation is presented ... . By counting fine growth bands in the caudal thorns instead of broad diffuse bands, growth curves have ... % (Campana, 2001). There was no apparent bias between the two readings of reader 1, although individual ... reader 1 for the oldest skates. Randomisation tests showed no significant dif- ference between the ... age and gRowth estimates foR antaRctic staRRy skate (AmblyrAjA georgiAnA) fRom the Ross sea M.P ... , Wellington New Zealand Email – m.francis@niwa.co.nz M.J. Gallagher Irish Sea Fisheries Board The New ...

    Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 211–220 : Autor(es): Francis, M.P. and M.J. Gallagher

Páginas