Search results
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Research standards for exploratory fisheries
data and that detailed descriptions of CPUE data be de-emphasized. Focusing effort on subareas ... recommendations are made for optimizing this potential. The types of data that have led to successful assessments ... in the northern South Sandwich Islands are used as examples of what can be achieved using exploratory ... of otoliths; and 3) recording of length, sex and gonad stage. It is suggested that research standards ...
Meeting Document : WG-SAM-11/15 Rev. 1 : Author(s): D. Kinzey (USA)
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A SIMULATION STUDY TO DETERMINE THE RELATIONSHIP BETWEEN SAMPLING INTENSITY AND PRECISION WHEN ESTIMATING AVAILABILITY FUNCTIONS FOR BREEDING ADÉLIE PENGUIN COLONIES
measurements that allow high resolution temporal availability functions to be estimated, which in turn can be ... consuming and expensive to process, and it is of interest to determine if such data could be subsampled with ... obtained from higher frequency sampling, with a trade-off observed between sampling frequency and precision ... and cannot be recommended. Author(s): J. McKinlay and C. Southwell (Australia) Title: A SIMULATION ...
Meeting Document : WG-EMM-11/12 : Author(s): J. McKinlay and C. Southwell (Australia)
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Validation of sink rates of longlines measured by two different methods
bottles may be an appropriate means for measuring sink rates to shallow depths (> 5 m) that they should ... with bottles averaged 0.13 ± 0.02 m.s-1 compared to 0.21 ± 0.07 m.s-1 recorded by TDRs. This difference ... difficult and unreliable with bottles. Bottles had a higher failure rate (51 – 68 %) than TDRs (> 90 ... %), for example, with string becoming entangled or bottles vanishing from sight. We recommend while ...
Meeting Document : WG-FSA-03/62 : Author(s): B. Wienecke and G. Robertson (Australia)
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OPTIONS FOR USING UNREPLICATED ECOSYSTEM MONITORING DATA TO DETECT IMPACTS
indicators with several (moderate and extreme) reference points and that the response to an impact should be ... indicate population size, which is the parameter that many conservation objectives attempt to control ... . Furthermore, CEMP data cannot be used in a standard environmental impact assessment framework as they lack ... control sites. Identifying how these data could be used in an ecosystem management strategy is therefore ...
Meeting Document : WG-EMM-09/26 : Author(s): S. Hill, J. Forcada, P. Trathan and C. Waluda (United Kingdom)
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Results from the groundfish survey conducted in CCAMLR Subarea 48.3 in January/February 2011
Rocks. These fish are likely to be the same cohort that was evident at Shag Rocks in 2010 (fish were ... between the 27th January and 6th February 2011. 87 random hauls were completed, with good coverage across ... the shelf. Catch-weighted length frequencies of mackerel icefish indicated that 3+ sized fish ... mean biomass of 49,353 tonnes was estimated for mackerel icefish, with a lower 1-sided 95% CL of 31,373 ...
Meeting Document : WG-FSA-11/29 : Author(s): J. Brown, S. Gregory, K. Brigden, R. Benedet, O. Hogg, P. Brewin and L. Featherstone (United Kingdom)
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THE ANTARCTIC KRILL AND ECOSYSTEM SURVEY WITH R/V “G. O. SARS” IN 2008
Studies) carried out with R/V G. O. Sars, 4.01-27.03.08, including some selected results. The main ... . Ellertsen, E. Grønningsæter, K. Jørstad, E. Karslbakk, T. Klevjer, T. Knutsen, R. Korneliussen, H. Kowall, B ... WITH R/V “G. O. SARS” IN 2008 Approval: Approved ...
Meeting Document : WG-EMM-08/28 : Author(s): S.A. Iversen (Norway), W. Melle, E. Bagøien, D. Chu, B. Edvardsen, B. Ellertsen, E. Grønningsæter, K. Jørstad, E. Karslbakk, T. Klevjer, T. Knutsen, R. Korneliussen, H. Kowall, B. Krafft, S. Kaartvedt, P.B. Lona, S. Murray, L. Naustvoll, L. Nøttestad, M. Ostrowski, V. Siegel, Ø. Skagseth, G. Skaret, H. Søiland, X. Zhao and C.B. Årnes
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Contribution to the early life history of Channichthyidae from the Bransfield Strait and South Georgia
and 2. Undescribed yet the early growth of the three remaining species seems to be similar to that ... -107 mm SL showed no annuli, which indicates that these fish belong to age group 0. Some periodic ... considered to be fortnightly /Fig. 3/. Otoliths of juvenile C. gunnari /155-215 mm SL/ had one annulus ... within the 45-100 mm SL length range /Fig. 5,6/. The results obtained demonstrate that larvae of ...
Meeting Document : CCAMLR/86/FA/08 : Author(s): W. Ślósarczyk (Poland)
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An integrated stock assessment for the Heard Island and McDonald Islands Patagonian toothfish (Dissostichus eleginoides) fishery in Division 58.5.2
and trap sub-fisheries. Compared to the 2015 assessment that was accepted by WG-FSA-15 to be used for ... its higher productivity with the updated maturity parameters, meant that the catch limit that ... eleginoides) fishery at Heard Island and McDonald Islands in CCAMLR Division 58.5.2 with data until end of the ... data to aid with the estimation of year class strength and selectivity functions of the trawl, longline ...
Meeting Document : WG-FSA-17/19 : Author(s): P. Ziegler
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Line weights of constant mass (and sink rates) for Spanish system Patagonian toothfish longline vessels
is a consequence of the heavier weight being a mul- tiple of the lighter weight). Research subsequent to Agnew et ... ), with the vari- ant being called the ‘Chilean longline’ (Moreno et al., 2008). If these species are not present ... for the Spanish ‘cachalote’, the sperm whale). Being made from buoyant mate- rial (polypropylene), during setting ... each branch/connecting line was fitted with a mix of 1.8 m or 2.0 m long cacha- loteras (dry weight ... every 40 m averaged 0.22 m s –1 to 2 m depth, which would be equal to, or exceeded by, lines with 5 kg ... with seabirds. The weights typically used are collections of rocks enclosed in netting bags. During ... fishing operations the netting bags abrade on the seabed causing rocks to be lost and the weights to ... become progressively lighter, requiring ongoing repair. This problem can be solved by use of ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 93–106 : Author(s): Robertson, G., C.A. Moreno, E. Gutiérrez, S.G. Candy, E.F. Melvin and J.P. Seco Pon
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European Union – Measurement of capacity in CCAMLR exploratory fisheries in Subareas 88.1 and 88.2
fishery in order to be aware of the pressures within the fishery as well as the trends and changes that ... standard metrics of capacity and capacity utilisation that can be used to monitor trends in the fishery ... toothfish fishery with specific focus on capacity related issues using information derived from the CCAMLR ... . Such metrics could be routinely produced by the CCAMLR secretariat using the CCAMLR C2 data. Author(s ...
Meeting Document : WG-SAM-14/19 : Author(s): Delegation of the European Union