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Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of tag-detection rates
Paper Title: Quantifying vessel performance in the CCAMLR tagging program: spatially and ... tagging program is critical to the successful management of a number of toothfish fisheries in Antarctica ... . In particular, tag-detection rates are directly linked to stock size estimated from the tag data in ... an integrated stock assessment. Previous attempts to assess the relative reliability of vessels in ... In CCAMLR Subareas 88.1 and 88.2, tag- release and -recapture data are used in an integrated age ... yields (Mormede et al., 2011a, 2011b; Mormede, 2011). In those analyses, the assumed values of ... parameters. For example, under- estimating the tag-detection rate of the fleet will result in an ... that there may be impor- tant differences between vessels in their respective detection rates of ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 73–80 : Autor(es): Mormede, S. and A. Dunn
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Scientific observations in CCAMLR fisheries – past, present and future
Paper Title: Scientific observations in CCAMLR fisheries – past, present and future Abstract ... -independent studies are difficult and expensive to conduct. In addition, the size of the Convention Area, its ... remoteness and prevailing inclement weather further complicate matters. Therefore, in addition to the ... observers on board fishing vessels has assumed prominence in the collection of essential data for fisheries ... , Vol. 12 (2005): 81–98 81 SCIENTIFIC OBSERVATIONS IN CCAMLR FISHERIES – PAST, PRESENT AND FUTURE ... information on affected resources. Fishery-independent studies are diffi cult and expensive to conduct. In ... complicate matters. Therefore, in addition to the standard catch and effort data supplied by vessels, the ... in the collection of essential data for fi sheries management purposes. The Scheme of International ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 81–98 : Autor(es): Sabourenkov, E.N. and E. Appleyard
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A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South Georgia
Paper Title: A composite recruitment index to describe interannual changes in the population ... substantial differences, due in part to bias arising from a large number of krill in just one of the station ... %), while between 1994 and 1998 the number of 1+ krill found in the population increased with a very ... successful recruitment year due to krill spawned in 1994/95. File: 06watkins.pdf ... ) shows that this is frequently the case, especially within the area of the eastern core box. In the ... in offshore waters at the eastern end of the island. The calculation of recruitment indices from ... the eastern end of the island, while in contrast large krill, when present, tended to occur at the ... krill occurring at the eastern end of the island early in the season are likely to be transported ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 71–84 : Autor(es): Watkins, J.L
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A review of the effectiveness of streamer lines as a seabird by-catch mitigation technique in longline fisheries and CCAMLR streamer line requirements
technique in longline fisheries and CCAMLR streamer line requirements Abstract / Description: Based to a ... large degree on the precedent set by CCAMLR in 1991, the streamer line has become the primary, and most ... commonly prescribed, seabird mitigation device in world longline fisheries. This paper reviews CCAMLR ... streamer line requirements (Conservation Measure 25-02 (2002), formerly Conservation Measure 29/XIX) in ... toothfi sh fi shery in the Falkland/Malvinas Islands and the Australian eastern tuna and billfi sh ... TECHNIQUE IN LONGLINE FISHERIES AND CCAMLR STREAMER LINE REQUIREMENTS E.F. Melvin Washington Sea Grant ... the precedent set by CCAMLR in 1991, the streamer line has become the primary, and most commonly ... prescribed, seabird mitigation device in world longline fi sheries. This paper reviews CCAMLR streamer line ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 189–201 : Autor(es): Melvin, E.F., B. Sullivan, G. Robertson and B. Wienecke
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Surface water masses, primary production, krill distribution and predator foraging in the vicinity of Elephant Island during the 1989-90 austral summer
of it. A second front was apparent at the eastern side of the study area and was tentatively ... size mode of small, reproductively mature females and immature males was sampled in January and ... in February. As a consequence, overall mean size increased from 41.8 mm in January to 44.3 mm in ... ). Examination of interrelations between the various physical and biological components measured in the study ...
Meeting Document : WG-CEMP-90/11 : Autor(es): A.F. Amos, J.L. Bengtson, O. Holm-Hansen, V.J. Loeb, M.C. Macaulay and J.H. Wormuth (USA)
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A possible framework in which to consider plausible models of the Antarctic marine ecosystem for evaluating krill management procedures
Paper Title: A possible framework in which to consider plausible models of the Antarctic marine ... management procedure for the krill fishery, including the evaluation of candidate management procedures in a ... framework for allowing flexibility in dealing with biological, spatial and temporal scales. The body of the ... critical processes are not necessarily lost in the process of formulating summary functions. Element ... (2005): 99–117 99 A POSSIBLE FRAMEWORK IN WHICH TO CONSIDER PLAUSIBLE MODELS OF THE ANTARCTIC MARINE ... , including the evaluation of candidate management procedures in a simulation framework, using plausible ... discusses the general model requirements and presents a conceptual framework for allowing fl exibility in ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 99–117 : Autor(es): Constable, A.J
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Potential nursery areas for fish in the Prydz Bay region
Paper Title: Potential nursery areas for fish in the Prydz Bay region Abstract / Description: A ... survey with a fine-meshed midwater trawl in Prydz Bay in January/February 1991 indicated the potential ... all juvenile fish were caught in the top 50 m over the shelf, and more than 95% were Pleuragramma ... antarcticum. This species was abundant (up to 9 100 were caught in a 30 minute haul) especially near the shelf ... not numerous, except in one station near the shelf edge at the eastern side of the bay (Figure 4). A ... WG-FSA-9l/35 POTENTIAL NURSERY AREAS FOR FISH IN THE ... PRYDZ BAY REGION R. Williams* * Abstract A survey with a fine-meshed midwater trawl in Prydz Bay ... in January/February 1991 indicated the potential for the shelf area of the Bay to be a nursery ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 369–380 : Autor(es): Williams, R.
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The Patagonian toothfish (Dissostichus eleginoides) fishery in the Kerguelen Islands (Indian Ocean sector of the Southern Ocean)
Paper Title: The Patagonian toothfish (Dissostichus eleginoides) fishery in the Kerguelen Islands ... eleginoides) have been fished in the Kerguelen Islands zone for 20 years, firstly with trawlers and more ... recently with longliners. This is the oldest fishery targeting D. eleginoides in the Indian Ocean sector of ... the Southern Ocean. However illegal, unreported and unregulated (IUU) fishing has occurred in the area ... indicates that in the eastern sector (in 2002/03) the sex ratio is balanced, slightly higher for females ... sector (and Skif sector) have a signifi- cantly larger average size than in the eastern sector (all fish ... PaTagonian TooThfish (Dissostichus eleginoiDes) fishery in The Kerguelen islands (indian oCean seCTor of ... Email – claralord@mnhn.fr Abstract Patagonian toothfish (Dissostichus eleginoides) have been fished in ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 1–25 : Autor(es): Lord, C., G. Duhamel and P. Pruvost
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Options for allocating the precautionary catch limit of krill among small-scale management units in the Scotia Sea
management units in the Scotia Sea Abstract / Description: Following an assessment of Antarctic krill ... (Euphausia superba) in the Scotia Sea, CCAMLR established a precautionary catch limit of 4 million tonnes and ... catch limit for krill among the SSMUs so as to preclude the inadvertent concentration of catches in a ... small portion of the surveyed area. Five options for allocating the catch limit among the SSMUs in the ... OPTIONS FOR ALLOCATING THE PRECAUTIONARY CATCH LIMIT OF KRILL AMONG SMALL-SCALE MANAGEMENT UNITS IN THE ... of Antarctic krill (Euphausia superba) in the Scotia Sea, CCAMLR established a precautionary catch ... inadvertent concentration of catches in a small portion of the surveyed area. Five options for allocating the ... catch limit among the SSMUs in the Scotia Sea are presented in this paper. The fi rst four are static ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 81–97 : Autor(es): Hewitt, R.P., G. Watters, P.N. Trathan, J.P. Croxall, M.E. Goebel, D. Ramm, K. Reid, W.Z. Trivelpiece and J.L. Watkins
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A preliminary assessment of age and growth of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea, Antarctica
antarcticum) in the Ross Sea, Antarctica Abstract / Description: Antarctic silverfish (Pleuragramma ... antarcticum) were sampled during a trawl survey in the Ross Sea, Antarctica. Biological data, including fish ... . Standard length and weight were well correlated (r 2 = 0.99). Counts of growth zones in 304 thin-sectioned ... from 4.6 to 22.9 cm. Pronounced modes in the length-frequency distribution occurred at 7.1–7.5, 10.6 ... + year classes. Hubold (1985) examined silverfish occurring in the eastern and southern Weddell Sea and ... ) studied the early lifehistory of Antarctic silverfish occurring in the eastern and southern Weddell Sea ... , horizontal and vertical distribution of fish in eastern Weddell Sea micronekton. Polar Biol., 13 (1): 41–53 ... , primarily derived from clear modes in lengthfrequency distributions. DeWitt and Tyler (1960) found ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 75–86 : Autor(es): Sutton, C.P. and P.L. Horn