Search results
-
Evidence to support the annual formation of growth zones in otoliths of Antarctic toothfish (Dissostichus mawsoni)
to each year class based on the time elapsed between the estimated end of the spawning season (September ... kg of fi sh weight. Some injected fi sh were later recaptured a year or more after tagging ... to the zones immediately before and after it, and that in some places this ‘single’ zone was split by a very ... in the otolith in the summer immediately after tagging was poorly formed and not apparent in the photographs ... Paper Title: Evidence to support the annual formation of growth zones in otoliths of Antarctic ... the Ross Sea (CCAMLR Subarea 88.1) have been aged assuming that one translucent zone is formed ... annually in the otoliths of this species. However, no evidence to validate this assumption has previously ... been presented. In the current work, otoliths from four distinct juvenile length-frequency modes were ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 125–138 : Author(s): Horn, P.L., C.P. Sutton and A.L. DeVries
-
Fish distribution and biomass in the Heard Island zone (Division 58.5.2)
length, with 50 mm mesh cod end liner. All meshes 'diamond' pattern. Ground gear with 35.6 cm rubber ... zone between 300 and 500 m around Shell Bank (She11500) was also Survey End 23 June 1990 13 ... Coral Aurora * Includes a 100 "" Includes a 500 stratum around Shell Bank combined after sampling ... NS NS NS after sampling for L. squarnifrons Rays Density (kg/km2) 39.7 158.4 57.8 71.6 ... Paper Title: Fish distribution and biomass in the Heard Island zone (Division 58.5.2) Abstract ... / Description: Division 58.5.2 encompasses the southern part of the Kerguelen plateau, and contains Heard ... Island and the McDonald Islands, an Australian Territory around which a 200-mile EEZ has been declared ... . In order to assess the potential of this area for commercial fishing, and to obtain some preliminary ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 1–20 : Author(s): Williams, R. and W.K. de la Mare
-
Data on krill (Euphausia superba Dana) consumption by coastal fishes in Division 58.4.2 (Kosmonavtov and Sodruzhestva Seas)
were 1.5 x 103 tonnes at the beginning of the season and 0.36 x 103 tonnes at the end. Thus in January ... 58.4.2 (Kosmonavtov and Sodruzhestva Seas) Abstract / Description: Current estimates of the level of ... krill consumption (Euphausia superba) are based on data obtained from the Atlantic sector which have ... then been extrapolated over all of Antarctica. According to these calculations the entire amount of ... krill consumption have thus far only been carried out for the Scotia and Lazarev Seas (Kock, 1985 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 305–319 : Author(s): Pakhomov, Y.A., V.A. Bibik and V.V. Gerasimchuk
-
The choice of procedure for deciding when to close fisheries regulated by CCAMLR: a simulation model
be reported to the Secretariat by 5-day reporting period, reports falling due at the end of the period ... D is the total time from the end of a reporting period to the arrival of the report at the Secretariat in days ... 1. Percentage model: this If cumulative catch is Catch rate of most recent The end of the reporting ... date falls in Catch rate of most recent The end of the reporting ad hoc method by the the period ... Paper Title: The choice of procedure for deciding when to close fisheries regulated by CCAMLR: a ... simulation model Abstract / Description: The methods, described in CCAMLR Conservation Measures, used for ... deciding the closure date for fisheries monitored by the Secretariat of CCAMLR, have been difficult to ... implement because of the variation in catch rates shown by the fisheries. Non-fluctuating random and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 81–97 : Author(s): Agnew, D.J.
-
Length-based assessment for mackerel icefish (Champsocephalus gunnari) at South Georgia
is that which ensures that the exploited biomass is equal to 75% of the unexploited biomass (after two years ... the next fishing period begins – assumed to be 0.9 of the first ‘year’. 4. At this point the TAC ... rate) to the end of the first ‘year’. 5. Steps 3 and 4 are then repeated to give the population ... abundance at the end of the second ‘year’. To calculate the consecutive two-year TAC, a numerical root ... Georgia Abstract / Description: The current CCAMLR assessment method for mackerel icefish ... (Champsocephalus gunnari) in Subarea 48.3 employs the CCAMLR mixture analysis program (CMIX) and generalised yield ... the given harvest control rule to set a two-year total allowable catch (TAC). One issue is the ... accurate identification of age cohorts from the survey data. In this paper a length-based approach is ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 129–137 : Author(s): Hillary, R.M., C.T.T. Edwards, R.E. Mitchell and D.J. Agnew
-
Book review – Biogeographic Atlas of the Southern Ocean
in this region. The occurrence data that were compiled for the atlas came from literature since the beginning ... of a significant number of organisms in this region. The atlas begins with a comprehensive history ... Paper Title: Book review – Biogeographic Atlas of the Southern Ocean Abstract / Description ... -Coudert (Eds). 2014. Biogeographic Atlas of the Southern Ocean. Scientific Committee on Antarctic Research ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 45-46 : Author(s): Reid, K.
-
Prey monitoring surveys: a discussion of the characteristics necessary in prey surveys
to be sought between the start of the Adelie and the end of the Chinstrap periods. A suitable compromise ... - The main species identified for study is the Adelie penguin which in this region begins feeding chicks ... in a random sequence. If the pairs were selected so as to start at the study colony end then the time taken ... predator feeding does however take place after dark so that - 383 - some consideration needs ... Paper Title: Prey monitoring surveys: a discussion of the characteristics necessary in prey ... surveys Abstract / Description: The CCAMLR Ecosystem Monitoring Programme requires information on prey ... distribution to relate to changes in predator demography. The paper discusses the constraints imposed on such ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 377-391 : Author(s): Everson, I.
-
CPUEs, body length and greenness of Antarctic krill during 1987/88 season in the fishing ground north of Livingston Island
with a Japanese trawler on the target strength of krill. Additionally, after the co-operative survey, krill ... was required to measure body lengths, from the tip of rostrum to the posterior end of telson, of 50 animals ... 200 m in the s-shaped co-operative survey area (Figure 1). After the co-operative survey between RV ... Paper Title: CPUEs, body length and greenness of Antarctic krill during 1987/88 season in the ... there was a marked change in two kinds of CPUEs, body length and greenness of krill during the fishing ... season, these parameters were examined for each 10-day period of the Japanese krill fishery in the ... northern waters of Livingston Island in the 1987/88 season. It appears that Japanese trawlers have not ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 323–338 : Author(s): Endo, Y. and T. Ichii
-
Target strengths of Antarctic krill (Euphausia superba)
secured after about one hour on each occasion. The krill were kept in a cluster of four holding pens ... octagonal end panels of the mesh to the long edges of a pre-cut rectangular panel, which formed ... , with monofilament nylon, pre-cut octagonal end panels of the mesh to the long edges of a pre-cut rectangular panel ... intervals, were displayed on a screen and stored on a BAS data logger at the end of each interval. 4.3 ... Paper Title: Target strengths of Antarctic krill (Euphausia superba) Abstract / Description: The ... and 120 kHz in a sheltered bay at South Georgia. The results indicate that the Target Strength values ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 265–279 : Author(s): Everson, I., D.G. Bone, J.L. Watkins and K.G. Foote
-
Mesopelagic fish of the Southern Ocean - summary results of recent Soviet studies
to the seasonal cycle of plankton development. Reproduction: Spawning apparently takes place at the end ... of winter (June/July) or at the beginning of spring (August/September). From November to May gonads ... of this species apparently takes place within the same period as that of E. antarctica, i.e. at the end of autumn ... Paper Title: Mesopelagic fish of the Southern Ocean- summary results of recent Soviet studies ... a part of the general multi-disciplinary program of research on Antarctic biological resources ... . Studies concentrate primarily on the following four most abundant species: Electrona carlsbergi, Electrona ... antarctica, Krefftichthys (Protomyctophum) anderssoni and Gymnoscopelus nicholsi. The data obtained so far ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 433–457 : Author(s): Sabourenkov, E.N.