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1. Mitigation of seabird captures during hauling in CCAMLR longline fisheries

   Paper Title:  Mitigation of seabird captures during hauling in CCAMLR longline fisheries Abstract ... as 1994/95 when steps were taken to reduce the attraction of seabirds to vessels during the hauling ... process. Since 2003, increased efforts have been made to improve the design and performance of bird ... these two key functional characteristics into the specification of a BED to be deployed by longline ... , CCAMLR agreed in 2009 to amend Conservation Measure 25-02 ‘Minimisation of the Incidental Mortality of ... . 156 Introduction The incidental capture of seabirds during line setting in longline operations has ... , dur- ing line setting has reduced the total number of dead seabirds in by-catch from over 5 000 in ... . However, this success in reducing the number of seabirds killed during line setting has highlighted the ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 155–162 : Auteur(s): Reid, E., B. Sullivan and J. Clark

2. Consideration of major issues in ecosystem monitoring and management

   availability of krill, variation in vital rates of the dependent species and the overlap between commercial ... Paper Title:  Consideration of major issues in ecosystem monitoring and management Abstract ... / Description:  This paper outlines the requirements of an ecosystem approach to the management of Southern ... interactions and the manner in which their populations vary naturally. Large-scale interactions are catered for ... ). Smaller-scale interactions centre around three main categories: the availability of krill, variation in ... ) prevention of decrease in the size of any harvested population to levels below those which ensure its ... - ation of depleted populations to the levels defi ned in subparagraph (a) above; and (c) prevention of ... changes or minimisation of the risk of changes in the marine ecosystem which are not potentially ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 213–232 : Auteur(s): Everson, I

3. Krill biomass in Area 48 and Area 58: recalculations of FIBEX data

   estimates of mean density and biomass for the Indian Ocean sector and the West Atlantic sector as well as ... Paper Title:  Krill biomass in Area 48 and Area 58: recalculations of FIBEX data Abstract ... / Description:  FIBEX acoustic and length frequency data held in the BIOMASS database were used to provide ... workshop. Estimates for the different areas were also calculated using the target strength relationships of ... held in the BIOMASS database were used to provide estimates of mean density and biomass for the ... de sonido de 120 kHz. 1. INTRODUCTION In 1991 the Commission for the Conservation of Antarctic ... ) Relationship The following TS/length relationships were used in the calculation of mean weight density (gm-2 ... in keeping with the original FIBEX approach (Anon., 1986). 2.5 Calculation of Biomass The mean ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 157–181 : Auteur(s): Trathan, P.N., D.J. Agnew, D.G.M. Miller, J.L. Watkins, I. Everson, M.R. Thorley, E. Murphy, A.W.A. Murray and C. Goss

4. Assessments of by-catch in trawl fisheries at Heard and McDonald Islands

   (Statistical Division 58.5.2) to significantly affect, in the long term, spawning biomass of three taxa caught ... biomass estimates from surveys in the region from 1990 to 1993 and a limited amount of biological data ... commercial operations and the effectiveness of by-catch provisions (the 5% rule) set by CCAMLR in 1996 to ... by-catch during commercial activities in 1996/97 was approximately 5%, 58% and 11% of the respective ... , causing a triggering of the 5% rule in Conservation Measures 109/XV and 11O/XV. Most instances occurred ... (Statistical Division 58.5.2) to significantly affect, in the long term, spawning biomass of three taxa caught ... biomass estimates from surveys in the region from 1990 to 1993 and a limited amount of biological data ... during commercial operations and the effectiveness of by-catch provisions (the 5% rule) set by CCAMLR in ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 231–243 : Auteur(s): Constable, A.J., R. Williams and W.K. de la Mare

5. Potential impacts of bottom trawling on benthic communities in Prydz Bay, Antarctica

   examine a potential impact of bottom trawling on benthic communities in this region. The benthos was ... examined in trawls at 14 of the 22 random stations providing representative samples from different areas in ... most abundant taxa in terms of biomass. The wet-weighed ratio of benthos to finfish in the codend was ... demonstrate that the biomass of benthos that could be disturbed by commercial bottom trawling could be high in ... Australia in the 1990/91 season. The data collected are used to examine a potential impact of bottom ... trawling on benthic communities in this region. The benthos was examined in trawls at 14 of the 22 random ... sponges and ascidians. Holothurians and crinoids were the next most abundant taxa in terms of biomass ... . The wet-weighed ratio of benthos to finfish in the codend was greater than 1 at 12 out of the 14 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 403–410 : Auteur(s): Constable, A.J.

6. Statistical power to detect changes in growth rates of Antarctic fur seal pups

   changes (between years) in pup growth rates, the loss of power associated with obtaining weight samples on ... only three dates in a season, and potential means of increasing the power of the CCAMLR Ecosystem ... Method (50 pups of each sex, weighed on four dates at 28-day intervals) would result in the ability to ... detect a 17% change in the growth rate with a 10% chance of committing Type 1 or Type 2 errors. If only ... ) in pup growth rates, the loss of power associated with obtaining weight samples on only three dates ... in a season, and potential means of increasing the power of the CCAMLR Ecosystem Monitoring Program ... % change in the growth rate with a 10% chance of committing Type 1 or Type 2 errors. If only three samples ... number of pups weighed in a season, by decreasing the time between weighings. Resume Des simulations ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 399–409 : Auteur(s): Boveng, P., J.L. Bengtson and M.E. Goebel

7. Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997

   of considerable value in interpreting the results from ecosystein assessments such as that in ... Paper Title:  Variations in condition indices of mackerel icefish at South Georgia from 1972 to ... predominantly on krill. An index of condition which uses the ratio of the measured total mass to the estimated ... mass is shown to provide a good indicator of local krill density. The index is likely to be little ... interpreting the results from ecosystein assessments such as that in progress under the auspices of CCAMLR ... to be related to the amount of krill available to C. gi~i~izari in the sampled region (Everson et ... . The Inass of the viscera will vary mostly due to the amount of food contained in the stomach and ... energy stored as fat deposits in the body cavity (Frolkina, pers. comm.). In addition, the gonads of ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Auteur(s): Everson, I. and K.-H. Kock

8. Midwater trawl catchability in relation to krill and possible ways of assessing gross catch

   the basis of data obtained from AtlantNIRO expeditions from 1983 to 1990 in the Scotia Sea. A ... Paper Title:  Midwater trawl catchability in relation to krill and possible ways of assessing ... methodology was developed for and applied to determining the rate of krill filtration through the trawl rope ... and netting and also the probability that krill will come into contact with various parts of the net ... in the Elephant Island area (January, 1985) were as follows: • mean depth of swarm distribution, H ... when it comes to solving the task in hand. The authors of this work have attempted to examine the ... process of krill fishing and the way the catch is formed in the trawl and also to devise approaches to ... portion of physical space in which there is a likelihood greater than zero that the target species will ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 87–113 : Auteur(s): Zimarev, Yu.V., S.M. Kasatkina and Yu.P. Frolov

9. Marine mammals and demersal longline fishery interactions in Crozet and Kerguelen Exclusive Economic Zones: an assessment of depredation levels

   whales. These two species, alone or in co-occurrence with each other, were observed in 71% of the 1 308 ... two species, alone or in co-occurrence with each other, were observed in 54% of the 6 262 longlines ... monitored. Interactions were observed in all fishing areas. The effect of depredation was assessed by ... comparing catch-per-unit-effort (CPUE) (fish/weight/hook) of each longline set in the absence/presence of ... to compare the mean CPUE in different combina- tions of marine mammal species observed within each ... , mean CPUE was lower in the presence of sperm whales than it was when no marine mammals were present ... or in co-occurrence with each other, were observed in 71% of the 1 308 longlines set. In the ... in co-occurrence with each other, were observed in 54% of the 6 262 longlines monitored ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 67–82 : Auteur(s): Roche, C., C. Guinet, N. Gasco and G. Duhamel

10. Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in Australian sub-Antarctic trawl fisheries

    McDonald Islands (Division 58.5.2) in 1992 and 1993. The range of estimated ages was 4 to 25 years. There ... Paper Title:  Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in ... operations in the Heard Island region in 2000. The length at first maturity (L 50) was 418 mm (total length ... Australian sub-Antarctic trawl fisheries Abstract / Description:  Estimates of age and growth were obtained ... Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR). In some areas the macrourid ... sub-Antarctic waters of the Southern Ocean (Iwamoto, 1990). They are commonly caught as by- catch in ... information on the life history and abundance of these species. In particular, age, growth and reproductive ... the adoption by CCAMLR in 2002 of anal length as the standard length measurement for macrourids. In ...

    Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 139–151 : Auteur(s): van Wijk, E.M., R. Williams and A.J. Constable

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