Résultats de la recherche
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Assessment and tag program adaption methods for exploratory fisheries in the CAMLR Convention Area: an example application for Division 58.4.3a
tagging levels that will produce an expected abundance estimate in the following year of a given precision ... Paper Title: Assessment and tag program adaption methods for exploratory fisheries in the CAMLR ... exploratory stocks in the CAMLR Convention Area. The assessment methodology is designed to be able to ... tested using the assessment results for toothfish in CCAMLR Subarea 48.3 and the assessment method is ... ), not its status relative to 20% of K in the final year of projection. One might then expect that ... will produce an expected abundance estimate in the following year of a given precision whilst ensuring ... ) For the first year of release, y*, the number of tags in the population is immediately reduced by ... . Binomial recapture model In a given year, the probability of recapturing a tagged fish in the legal fleet ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 101–113 : Auteur(s): Hillary, R.M
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Precautionary measures for a new fishery on Martialia hyadesi (Cephalopoda, Ommastrephidae) in the Scotia Sea: an ecological approach
, Ommastrephidae) in the Scotia Sea: an ecological approach Abstract / Description: In anticipation of the ... development of a new fishery for the ommastrephid squid Martialia hyadesi in the Scotia Sea, this paper ... conservative estimate for total annual consumption of M. hyadesi by higher predators in the Scotia Sea is 245 ... spawns between autumn and mid-summer with peak hatching in winter/spring. Its life span has not been ... in that year (Rodhouse, 1991). In February 1989 two Japanese squid jiggers carried out an ... were more mature in samples taken later in the year; ranging from stage I1 (Lipinski, 1979) at the ... increments in statoliths were up to one year old (Rodhouse, 1991; Rodhouse et al., 1994). Given the early ... two-year life cycle. However, Arkhipkin and Silvanovich (in press) have found a small number of ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 125–139 : Auteur(s): Rodhouse, P.G
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Schedule of conservation measures in force 2014/15 – individual pdf files
Description / Abstract: This zip file contains the complete Schedule of conservation measures in ... period of one year in respect of a particular vessel, the Flag State of the vessel shall investigate ... paragraphs 19, 20, 21 or 22 in a confidential manner in accordance with the confidentiality rules ... number TN O Activity detail; fishing trip serial number in current year. Vessel name NA M Vessel ... Secretariat by the end of the first calendar month following the third year in which the VMS reports and ...
Document : Site Section: Conservation and Management
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Fishery Report: Exploratory fishery for Dissostichus spp. in Subareas 88.1 and 88.2
predicted future spawning stock biomass (SSB) was below 20% of B0 in any one year, for each year over a 35 ... year, are given in Figure 9. Year B io m as s ('0 00 t) 2000 2010 2020 2030 2040 0 2 4 6 8 ... ), these year classes are not seen in large numbers in later years in the fishery, and there was no ... catch limits for the Subarea 88.1 and 88.2 SSRUs in the Ross Sea were changed as part of a three-year ...
Document : Site Section: Publications
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Length-at-age in juvenile Patagonian toothfish (Dissostichus eleginoides)
observed in the length density represent different age cohorts separated by one year. File: 01ashford.pdf ... Paper Title: Length-at-age in juvenile Patagonian toothfish (Dissostichus eleginoides) Abstract ... estimated from reading otoliths in a goodness-of-fit test. The majority of the otoliths (83.6%) were ... estimated to be from fish 1+ or 2+ years old, with mean total lengths of 32.5 cm and 41.3 cm respectively ... taken off South Georgia in January 2000. Age 0+ Age 1+ Age 2+ Age 3+ Age 4+ 40 30 20 10 0 40 ... ned as 1+ year old. As in previous years, apart from the dates of the groundfi sh survey, no ... ). The modal values were similar to those which had been assumed to represent year classes in previous ... to the length-frequency peaks shown in Figure 2, indicating that the two large peaks represent year ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 1–10 : Auteur(s): Ashford, J., C. Jones, S. Bobko and I. Everson
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Summary of the toothfish fishery and tagging program in the Ross Sea region (Subarea 88.1 and SSRUs 882A–B) through 2017/18
recaptured in 2018 was similar to that recaptured in previous years, with some fish recaptured after 14 years ... 2018 season. Despite 2018 being the first year of implementation of the Ross Sea region Marine ... Abstract: This report summarises the toothfish fishery in the Ross Sea region (Subarea 88.1 and ... Protected Area, most of fishing effort was carried out in the historically fished areas. There was a small ...
Meeting Document : WG-FSA-18/46 : Auteur(s): S. Mormede and S. Parker
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Fishery Report: Exploratory fishery for Dissostichus spp. in Subareas 88.1 and 88.2
small fish are caught in some years (e.g. on the shelf in 1999 and 2001), these year classes are not ... catch limits for the Subarea 88.1 and 88.2 SSRUs in the Ross Sea were changed as part of a three-year ... more stable ranging from 1 000–1 500 sets per year. Although most SSRUs in Subareas 88.1 and 88.2 ... have been fished over time, the proportion of effort in each SSRU has varied considerably each year in ...
Document : Site Section: Publications
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Bioregionalisation and spatial ecosystem processes in the Ross Sea region
. networks of Marine Protected Areas, or MPAs). In 2008 CCAMLR utilized a circumpolar-scale ... -scale bioregionalisation and ‘systematic conservation planning’ (SC-CAMLR XXVII, paragraph 3.55). In ... of MPAs in the CCAMLR Area by 2012. New Zealand has been an active contributor to the CCAMLR spatial ... management planning process, and has declared its interest in progressing spatial marine protection in the ...
Meeting Document : WG-EMM-10/30 : Auteur(s): B.R. Sharp, S.J. Parker, M.H. Pinkerton (New Zealand) (lead authors) also B.B. Breen, V. Cummings, A. Dunn (New Zealand), S.M. Grant (United Kingdom), S.M. Hanchet, H.J.R. Keys (New Zealand), S.J. Lockhart (USA), P. O’B. Lyver, R.L. O’Driscoll, M.J.M. Williams, P.R. Wilson (New Zealand)
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Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Signy Island, South Orkney Islands 1999/2000
collar made of unknown material (20%). The proportion of animals entangled in packaging bands was the ... second lowest recorded, a decrease of 20% compared to the previous year. At Bird Island, packaging bands ... decreased (by 42%) since 1998/99. Over the past four years, fluctuations in the incidence of entanglement ... seals wearing neck collars of man-made debris. One additional sighting was of an animal that had been ...
Meeting Document : SC-CAMLR-XIX/BG/03 : Auteur(s): Delegation of the United Kingdom
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Factors to consider in developing management measures for krill
Paper Title: Factors to consider in developing management measures for krill Abstract ... year to year. The various techniques used to estimate the abundance of animal populations also give ... constant from year to year. Yet either strategy has to achieve the same conservation objectives. In ... fluctuations in catch from year to year cannot all be fully achieved simultaneously. For example, steady ... year to year. 3.5 Time Frame for Implementation A further element to consider in developing ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 175–187 : Auteur(s): de la Mare, W.K.