Search results
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SG-ASAM-2019
Acoustic data collection by the krill fishing industry to improve the monitoring of krill abundance K. Reid ... , at the Institute of Marine Research (https://www.hi.no/en). Meeting documents Doc Number Title SG-ASAM-2019/01 ... and J. Arata SG-ASAM-2019/02 Preliminary biomass estimation of Antarctic krill based on the swarm-based method ... for CCAMLR Division 58.4.1 in 2018/19 using data obtained by Japanese survey vessel Kaiyo-maru K. Abe ...
Meeting
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Slow recovery of previously depleted demersal fish at the South Shetland Islands, 1983–2010
closed this fishery in 1990. We report changes in size and abundance of the commercially exploited ... during preceding years. Modal age changed from 2-3 to 6-7 yr. Length data of G. gibberifrons, available ... period showed no change in modal size or mean length of the fish. We relate these patterns to the fishery ... fisheries as an example, current management rules for Southern Ocean fisheries, deemed to be precautionary ...
Meeting Document : WG-FSA-12/P01 : Author(s): E.R. Marschoff, E.R. Barrera-Oro, N.S. Alescio and D.G. Ainley
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Preliminary results of the Polish commercial krill fishery in the Antarctic during 1990/91 season
Abstract: Four Polish commercial trawlers participated in the krill fishery in 1990/91 season ... . As the fishery data were not fully analysed yet no clear trends in catch-per-unit-effort for different fishing ... : Preliminary results of the Polish commercial krill fishery in the Antarctic during 1990/91 season Approval ... Four Polish commercial trawlers participated in the krill fishery in 1990/91 season on the fishing ...
Meeting Document : WG-KRILL-91/36 : Author(s): I. Wójcik and R. Zaporowski (Poland)
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Biological acoustic survey in the marginal ice edge zone of the Bellingshausen Sea
integration system. These data are used to describe the spatial and temporal variability of krill (Euphausia ... and described from the chart record of the echo sounder. Mean Volume Backscattering Strength data were collected ... using an echo integration system. These data are used to describe the spatial and temporal variability ... of krill (Euphausia superba) distribution and biomass in the marginal ice edge zone. Krill biomass density ...
Meeting Document : WG-Krill-94/32 : Author(s): A.W.A. Murray, J.L. Watkins and D.G. Bone (United Kingdom)
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Preliminary analysis of toothfish catch, CPUE, size structure and mark-recapture data from SSRUs 486A and 486G, with comments on the sustainability of different harvest levels
the available information. Actual assumptions are set out in this document. CPUE data are standardised using ... Abstract: Available catch, effort, catch-at-size and tagging data for Statistical Subarea 48.6 ... of toothfish catch, CPUE, size structure and mark-recapture data from SSRUs 486A and 486G, with comments ... Available catch, effort, catch-at-size and tagging data for Statistical Subarea 48.6 are analysed ...
Meeting Document : WG-FSA-12/31 : Author(s): E. Thomson and M. Bergh (South Africa)
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Temporal changes in sighting density indices of baleen whales in CCAMLR Subareas 48.1 and 48.2 based on three circumpolar sighting surveys
of krill-eater baleen whales in Subareas 48.1 and 48.2. This paper was prepared in response to a suggestion ... for at-sea observations of cetaceans. Sighting data examined in this study were obtained during a series ... data in Subarea 48.1 corresponded to years 1982/83, 1989/90 and 1993/94+1999/00, respectively while ... for management of krill under the FBM. The first is the development of the stock abundance of whales in relevant ...
Meeting Document : WG-EMM-16/26 : Author(s): L.A. Pastene and T. Hakamada
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An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) for the Heard and McDonald Islands using CASAL
/fishery model predictions. Extension of this method of estimating process error to RSTS abundance data ... Division 58.5.2), using CASAL and data consisting of multi-year random stratified trawl survey (RSTS ... ) abundance estimates by length bin, commercial catch-at-length data, standardised CPUE series for the trawl ... population model, but spatial complexity in the fishery was modelled using separate fishing selectivity ... survey data (RSTS described above) and mark–recapture data from the different fisheries. Although ... removals and selectivities is denoted the ‘popula- tion/fishery’ model for the remainder. Data A number ... B, C and D (observa- tions); • numbers of tag–releases (input data) and tag– recoveries for each fishery and fishing ... fisheries. Figure 1 shows the mark–recapture data for the main commercial grounds while Table 2 gives ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 1–34 : Author(s): Candy, S.G and A.J. Constable
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Food consumption by predators in a CCAMLR integrated study region
is directly applicable also to fur seals and could be modified to incorporate phocid seal data, when available ... . Prey categories are readily modifiable to sub-divide krill into sexes and maturity stages ... . With existing empirical data on breeding population size, diet, activity-specific energy requirements ... and foraging ranges, it is possible to make realistic estimates of krill consumption of penguins and fur seals ... of prey such as krill. 1. Running Version 3.30 of the System The changes to the data used ... of varying krill energy content using data in Clarke (1980) as portrayed in Figure 6c. (d) General We ... using data from TDR studies. 5. Application of System to Krill Prey Alone The system and program ... applicable also to fur seals and could be modified to incorporate phocid seal data, when available. Prey ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 489–519 : Author(s): Croxall, J.P., C. Ricketts and A.G. Wood
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The effect of sample size on the observed length distribution of Antarctic krill
on the length data collected by scientific observers onboard the Chinese krill fishing vessel Fu Rong Hai during ... data collected by scientific observers onboard the Chinese krill fishing vessel Fu Rong Hai during ... Abstract: The appropriate sample size for krill length measurement was raised during the WG-SISO ... the 2015/2016 fishing season. The variation of statistical property of krill length distribution ...
Meeting Document : SC-CAMLR-XXXVI/21 : Author(s): Delegation of China
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Predicting distribution and relative abundance of mid-trophic level organisms using oceanographic parameters and acoustic backscatter
Abstract: Data on the distribution and abundance of mid-trophic level organisms (MTLOs ... in their ability to support decision-making for issues ranging from fisheries management to ecosystem resilience ... to climate change. We used acoustic data collected at 38 kHz frequency across the Southern Ocean (SO) between ... for releasing documents: New Zealand ...
Meeting Document : WG-EMM-18/P07 : Author(s): P.C. Escobar-Flores, R.L. O’Driscoll and J.C. Montgomery