Search results

1. Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons and nations

   seasons start on 1 December and end on 30 November. For example, the fishing season starting ... on 1 December 1995 and ending on 30 November 1996 is expressed as 1995/96. If the years are simply expressed ... was March–May. Relatively large catches were reported before 1993 but only occasionally after 1993 ... until 1993, but after this period the level of catch reduced to the same level as Subarea 48.1 ... Paper Title:  Fishing ground selection in the Antarctic krill fishery: trends in patterns across ... characterised using STATLANT and CCAMLR fine-scale data. Among the 15 small-scale management units (SSMUs ... ) within Subareas 48.1, 48.2 and 48.3, including the pelagic SSMUs, only one-third were identified as major ... contributors to the total catch. A recent shift in operational timing towards later months within fishing ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 117–141 : Author(s): Kawaguchi, S., S. Nicol, K. Taki and M. Naganobu

2. Review of length-weight relationships for Antarctic krill

   taken over a short period during the spawning season (end of February to beginning of March 1985), when ... significant only during the post-spawning period, when females have shed their eggs (Siege1, 1989). After ... euphausiid species), are listed for ash-free dry weight, dry weight, and wet weight. The accuracy of length ... taken into account. The influence of seasonal changes on length-weight relationship parameters is ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 145–155 : Author(s): Siegel, V.

3. Distribution of mackerel icefish (Champsocephalus gunnari) (Channichthyidae) around South Georgia at various stages of its life cycle

   was considered between the depth ranges of 100–150 and 151–200 m, and there- after at 50 m intervals to a depth ... in the layer from 200 m depth to the bottom, and at the end of the season, in the 50–75 m bottom layer ... migrate to the Shag Rocks area most probably die after reaching two years of age. The abovementioned ... than the fi rst year of maturity, also form concentrations on the shelf at the beginning ... South Georgia at various stages of its life cycle Abstract / Description:  The distribution of mackerel ... into account the spatial–temporal variability of C. gunnari. Young fish of the first age group (<15 ... cm in length) were mainly found in the southern part of the study area, immature fish (15–25 cm) in ... the east and southwest, and adults (25–39 cm) in the north. The distribution of C. gunnari changes ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 49–69 : Author(s): Frolkina, Zh.A

4. Towards an initial operational management procedure for the krill fishery in Subareas 48.1, 48.2 and 48.3

   (and the availability of CPUE data) is assumed to commence after 10 years of annual catches of 0.4 million tonnes ... occur in practice under the procedure described here. After this initial five year period, catches ... that the size of the resource has fallen too low. To this end a target CPUE level (CPDEtar) is chosen; because ... than the average biomass at the end of the period as might be the case in a single-species context ... Paper Title:  Towards an initial operational management procedure for the krill fishery in ... (Euphausia superba) in Subareas 48.1, 48.2 and 48.3 requires a basis for the assessment of resource status ... , and an algorithm for specifying the levels of regulatory mechanisms (e.g., a catch control law) that ... depends on the results of the assessment. The development and selection of a procedure requires a basis ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 189–219 : Author(s): Butterworth, D.S.

5. Brief report of the joint Soviet-Australian expedition of the USSR FRV Professor Mesyatsev to the Australian fishing zone around the territory of Heard and McDonald Islands, May-August, 1987

   plans of the nets and cod ends used were made available to and copied by the Australian observer ... distinct in the layer deeper than 120m. Low catches at the end of July are related to the destruction ... growth. Gonads of the third group were in the resting stage, a considerable time after spawning ... was assigned to stage VI-III for females and stage VI-II for males . GSI for these after spawning stages ... Paper Title:  Brief report of the joint Soviet-Australian expedition of the USSR FRV Professor ... Mesyatsev to the Australian fishing zone around the territory of Heard and McDonald Islands, May-August ... , 1987 Abstract / Description:  The results of the first joint Soviet-Australian expedition to the AFZ ... around Heard and McDonald Islands are briefly reported. Environmental conditions of the shelf area of ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 75-103 : Author(s): Gherasimchook, V.V., V.N. Brodin, A.V. Kljausov, I.B. Russelo, P.V. Tishkov and N.B. Zaremba

6. Analysis of haul data from the South Georgia krill fishery

   in June and July and less tightly clustered towards the end of the season. After each haul is complete ... fishing season at South Georgia occurs during the austral winter and spans the end of one CCAMLR ... reporting year and the beginning of the next. Therefore to aid clarity in this study, data have been ... to fish; fishing end time: the time at which hauling started and the net stopped fishing; * haul end ... Paper Title:  Analysis of haul data from the South Georgia krill fishery Abstract / Description ... :  Data from individual hauls carried out by vessels operating in the South Georgia krill fishery between ... 1994 and 1996 were examined and a range of descriptive measurements reflecting the fishery operation ... were produced. The measurements emphasise that the krill fishery at South Georgia was geographically ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 9–30 : Author(s): Trathan, P.N., I. Everson, E.J. Murphy and G.B. Parkes

7. A generalised model for evaluating yield and the long-term status of fish stocks under conditions of uncertainty

   as: where t , and t , are the respective start and end times of the spawning season within the year ... ) of the estimated median of the pre-exploitation spawning biomass, So (after Butterworth et al., 1994). Median ... SB if lowest End E- SB.end Figure 1: Flow chart of a single realisation of a stock trajectory ... in the generalised yield model. SB.0, SB.current, SB.end and SB.lowest refer to, respectively, the spawning biomass ... Paper Title:  A generalised model for evaluating yield and the long-term status of fish stocks ... projection model for assessing the long-term annual yield which satisfies objectives for the maintenance of ... the spawning stock biomass in accordance with CCAMLR criteria. These specify a bound on the ... probability that the spawning biomass will become depleted to below some specified level over a specified ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Author(s): Constable, A. and W.K. de la Mare

8. The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species

   (for simplicity below, recruitment is assumed to occur at end of the year, although growth during the year can ... for 500 years before a trial begins. The trial is run for 100 years with fishing beginning in year 50 ... between trials. The fishery depletes Prey 1 to zero after 20 years. Prey 2 is more abundant (-3x) than ... Prey 1 in the absence of fishing and then increases its mean abundance over 10 years after ... Paper Title:  The ecosystem approach to managing fisheries: achieving conservation objectives for ... for the recovery of depleted populations in food webs supporting fisheries. This paper addresses the ... following general questions for applying the ecosystem approach to managing fisheries: (i) how might ... fisheries impact incidentally on an ecosystem, (ii) what should be the conservation objectives for predators ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 37–64 : Author(s): Constable, A.J

9. Feeding patterns of nine species of Antarctic fish and assessment of their daily food consumption

   , T - duration of observations (36 hours), y(O) and y(T) mean indices of stomach fullness at the beginning ... and end of observations respectively. Daily food consumption for each fish species was calculated ... . Each 325 population sample is obtained after trawling three miles for one hour and, since we do ... food consumption Abstract / Description:  Little is known about the feeding patterns of non-commercial ... fish species in Antarctic waters. The aim of this study is to collect information on the feeding ... patterns of several commercially non-targeted species in the Indian Ocean sector of the Southern Ocean ... : Nototheniidae (four species), Channichthyidae (three species) and Bathydraconidae (two species). The study ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 321–333 : Author(s): Pakhomov, Y.A. and V.B. Tseitlin

10. Length-at-age in juvenile Patagonian toothfish (Dissostichus eleginoides)

    (end of opaque zone and beginning of the following year’s translucent zone). Total length (cm) 10 ... , no auxiliary information was made available to the readers until after completion of all readings ... / Description:  We used the otoliths from a sample of Dissostichus eleginoides pre-recruits, whose length ... the length modes observed. Length densities by age were compared graphically with the overall length ... estimated from reading otoliths in a goodness-of-fit test. The majority of the otoliths (83.6%) were ... . No difference was found between predicted and estimated ages. We conclude that the two dominant modes ...

    Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 1–10 : Author(s): Ashford, J., C. Jones, S. Bobko and I. Everson

Pages