Search results
-
Methodology of data collection on net selectivity and accidental mortality of fish passing through the mesh of the codend
ON NET SELECTIVITY AND ACCIDENTAL MORTALITY OF FISH PASSING THROUGH THE MESH OF THE COD END VNIRO ... 6onDIDoro OCHOBaHHR ~yrr HMeeT PYKORTKY, co CTOPOHbI Ma- noro - OTBepcTHe ~HaMeTpOM 10 MM ~R rrO~BeIDHBaHHR ... of live and dead fish (after trawling) . Table 4. Net mesh measurements. List of Figures Fig ... ring; 4 - net float; 5 - stop-rope; 6 and 7 - connecting rings and loops; 8 - front-end halyard ... passing through the mesh of the codend Abstract / Description: This paper contains advice on determining ... mesh selectivity factors for trawl codends using a special liner. The design and technical ... specifications of the liner are described. It also describes an experiment to determine the accidental mortality ... of fish passing through the trawl codend. It contains proposals on standardising data collection and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 99-121 : Author(s): VNIRO (USSR)
-
Location and intensity of the Soviet krill fishery in the Elephant Island area (South Shetland Islands), 1988/89
" northeast of Elephant Island between 60°-60°15' and 54°1O'-54°45'W. After the second five-day period ... the end of February 1989 (Figures 8d and 8e). 4. DISCUSSION The data presented reveal significant ... of vessels within the 50 km zone was observed from the end of February (Figures 8d and 8e). However ... /days per five-day period at the end of February to March 1989. Such a level of fishing effort would ... Paper Title: Location and intensity of the Soviet krill fishery in the Elephant Island area ... (South Shetland Islands), 1988/89 Abstract / Description: This paper analyses fine-scale data from the ... Soviet krill fishery off Elephant Island (Subarea 48.1) between 59°-62°S and 53°-57°W during the period ... from 21 November 1988 to 25 March 1989. Although the total catch of the USSR in this season reached a ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 305–335 : Author(s): Sushin, V.A. and A.S. Myskov
-
Use of the Leslie stock depletion model for the assessment of local abundance of Patagonian toothfish (Dissostichus eleginoides)
may not always start from the same end of the line at which setting started. All of these factors ... are given at the end of the paper. Plots of CPUE (CPH) against cumulative catch for all of the data ... D) are presented in Figures 2 to 7 which are given at the end of the paper. Regression lines are shown only ... sizes. Hilborn and Walters (1992) suggested that after an initial period in which the most vulnerable ... Paper Title: Use of the Leslie stock depletion model for the assessment of local abundance of ... Patagonian toothfish (Dissostichus eleginoides) Abstract / Description: The Leslie depletion model has been ... used to examine local patterns in catch per unit effort (CPUE) in the longline fisheries for Patagonian ... toothfish (Dissostichus eleginoides) around South Georgia and the Pacific coast of Chile. This paper ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 55–77 : Author(s): Parkes, G., C.A. Moreno, G. Pilling and Z. Young
-
Age estimation and maturity of the ridge-scaled macrourid (Macrourus whitsoni) from the Ross Sea
was supplemented with observations from 26 unsexed juvenile fish after Stevens et al. (2004). Each obser- vation ... Bertalanffy models were then refitted to the supplemented dataset. The juvenile end of the male and female ... , as this model is robust to pool- ing data across years, and adequately models the juvenile end of the growth ... Paper Title: Age estimation and maturity of the ridge-scaled macrourid (Macrourus whitsoni) from ... the Ross Sea Abstract / Description: Juveniles of the macrourid Macrourus whitsoni were collected by ... the NIWA research vessel Tangaroa during the BioRoss survey of the western Ross Sea and Balleny ... Islands in 2004. Intensive analysis of otoliths from these specimens greatly increased confidence in the ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 291–303 : Author(s): Marriott, P.M., M.J. Manning and P.L. Horn
-
The CCAMLR-2000 Krill Synoptic Survey: a description of the rationale and design
-10 AP-14 SGI-03 SOI-01 SS-06 SSI-08 SS-B Sand-04 Table 7: Start and end dates for each ... vessel. Vessel-ID Nation Vessel Start Date End Date Ship 1 UK RRSJarnes Clark Ross 18 January 2000 10 ... Transect After randomly assigning transect positions on the X-axis of the base grid, Y-axis coordinates ... for the northern and southern ends of each transect were determined by extending the transects to the limits ... Paper Title: The CCAMLR-2000 Krill Synoptic Survey: a description of the rationale and design ... Abstract / Description: The design of the CCAMLR-2000 Krill Synoptic Survey (CCAMLR-2000 Survey) is ... described. The primary objective of the survey was to improve estimates of the pre-exploitation biomass of ... krill which are used in models to estimate sustainable yield in Area 48. The survey design includes two ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 1–23 : Author(s): Trathan, P.N., J.L. Watkins, A.W.A. Murray, A.S. Brierley, I. Everson, C. Goss, J. Priddle, K. Reid, P. Ward, R. Hewitt, D. Demer, M. Naganobu, S. Kawaguchi, V. Sushin, S.M. Kasatkina, S. Hedley, S. Kim and T. Pauly
-
An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) for the Heard and McDonald Islands using CASAL
. The justifica- tion for this re-weighting in the last two models is given under ‘Discussion’ after the method ... Paper Title: An integrated stock assessment for the Patagonian toothfish (Dissostichus ... eleginoides) for the Heard and McDonald Islands using CASAL Abstract / Description: An integrated stock ... assessment for the Patagonian toothfish (Dissostichus eleginoides) for the Heard and McDonald Islands (CCAMLR ... ) abundance estimates by length bin, commercial catch-at-length data, standardised CPUE series for the trawl ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 1–34 : Author(s): Candy, S.G and A.J. Constable
-
A quantified Bayesian Maximum Entropy estimate of Antarctic krill abundance across the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey
of randomness and unpredictabil- ity (which expresses the lack of prior knowledge) can – after some ... , defined as those consistent with the chosen parameters, produced the most likely MaxEnt result, after ... ). After compar- ing this with the actual data, another trial image is generated, which has been updated ... will mean that noise in the data begin to be fitted, resulting in unwarranted structure ... the Scotia Sea and in small-scale management units from the CCAMLR-2000 Survey Abstract / Description ... : A probabilistic Bayesian Maximum Entropy (MaxEnt) technique was used to estimate the abundance of ... Antarctic krill (Euphausia superba) across the Scotia Sea using data from the CCAMLR 2000 Krill Synoptic ... Survey of Area 48 (CCAMLR-2000 Survey) and to map the density distribution of krill across the survey ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 97–116 : Author(s): Heywood, B.G., A.S. Brierley and S.F. Gull
-
Population genetic structure of Patagonian toothfish in the West Indian Ocean sector of the Southern Ocean
per locus per collection ranged from one (locus To5) to 21 (locus cmrDe9). After sequential ... values below diagonal, (P values estimated after 10 100 Markov chain permutations are given ... in parentheses), P values for exact tests above diagonal (probabilities estimated after 10 100 Markov chain ... 0.832 0.948 * Significant deviation from HWE after sequential Bonferroni correction per locus per ... Paper Title: Population genetic structure of Patagonian toothfish in the West Indian Ocean sector ... of the Southern Ocean Abstract / Description: Molecular markers were used to investigate the stock ... structure of Patagonian toothfish (Dissostichus eleginoides) in the West Indian Ocean sector of the Southern ... significant mtDNA heterogeneity among the four collections and only weak and inconsistent heterogeneity (based ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 21–32 : Author(s): Appleyard, S.A., R. Williams and R.D. Ward
-
A proposed management procedure for the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity
% selectivity (a50 = 5.5 years) is introduced after three years (i.e. in 2010) to examine the MP performance ... , Appendix 2). These specify a default period of four years by the end of which MPs must have been reviewed ... Paper Title: A proposed management procedure for the toothfish (Dissostichus eleginoides ... ) resource in the Prince Edward Islands vicinity Abstract / Description: The status of the toothfish ... resource in the Prince Edward Islands region is unclear because CPUE data suggest considerable depletion ... future TACs in the face of this appreciable uncertainty. Four Operating Models (OMs) reflecting ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 33–69 : Author(s): Brandão, A. and D.S. Butterworth
-
On the power to detect changes using the standard methods for monitoring parameters of predatory species
to that of adjacent cohorts. Estimates for any of the three parameters will be available only after several years ... was begun on 25 December, well after the first egg was laid. Assuming no egg loss occurred prior ... are for tests conducted after two years of monitoring. Data are from Trivelpiece et al. (1989) Table 11 ... are for tests conducted after two years of monitoring. Data are from Trivelpiece et al. (1989), Table 12 ... Paper Title: On the power to detect changes using the standard methods for monitoring parameters ... of predatory species Abstract / Description: The CCAMLR guidelines (CCAMLR, 1989) for analyzing the ... statistical power to detect changes are applied using variance estimates from studies at the South Shetland ... trip duration (C2.0). The other Standard Methods are not evaluated because the power analysis in the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 377–397 : Author(s): Boveng, P. and J.L. Bengtson