Resultados de la búsqueda
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Antarctic icefishes (Channichthyidae) – a unique family of fishes – a review
haemoglobin. With the exception of one species, icefish live only in the cold – stable and oxygen – rich ... not attain maturity before they are 5 – 8 years old. Spawning period of most icefish species is autumn ... the 1970’s and 1980’s with Champsocephalus gunnari as the main target species. Most stocks of this ...
Meeting Document : WG-FSA-04/10 : Autor(es): K.-H. Kock (Germany)
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Preliminary assessment of mackerel icefish, Champsocephalus gunnari, on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003
approximately 20% of the 2002 estimate. This decline in abundance is consistent with the passage of the strong ... of un-assessed cohorts and provide for more stable catches between fishing years, while meeting the ... in recruitment, natural mortality and growth of these fish, combined with the need to maintain a ...
Meeting Document : WG-FSA-03/32 : Autor(es): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)
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Spatial distribution of foraging by female Antarctic fur seals
years when there were different amounts of prey available. Females were constrained to forage mainly ... dispersed to specific regions associated with the continental shelf east of Patagonia (>1000 km) and to ... by lactating female fur seals predicted spatial distributions that were consistent with past ...
Meeting Document : WG-EMM-01/26 : Autor(es): I.L. Boyd, I.J. Staniland and A.R. Martin (United Kingdom)
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Feasibility of lead-radium dating the otoliths of blackfin icefish (Chaenocephalus aceratus) and ocellated icefish (Chionodraco rastrospinosus)
, sample mass for the pooled otolith samples was low (~0.4 g). This finding, coupled with low radium-226 ... approach has some disadvantages, such as the circularity associated with developing a mass-growth model ... few years of growth) is possible for these species, provided there is enough sample mass and perhaps ...
Meeting Document : WG-FSA-10/17 : Autor(es): A.H. Andrews, M. La Mesa and J. Ashford (USA)
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A SIMULATION MODEL FOR EVALUATING MANAGEMENT STRATEGIES TO CONSERVE BENTHIC HABITATS (VULNERABLE MARINE ECOSYSTEMS) WHICH ARE POTENTIALLY VULNERABLE TO IMPACTS FROM BOTTOM FISHERIES
level that can naturally restore the original structure and function within 20 years. It does not ... ”, a categorisation fraught with difficulty. Instead, it means that habitats for which this would not ... as mosaics of a number of habitats along with their rates of decay, recovery and connectedness ...
Meeting Document : WG-SAM-09/21 : Autor(es): A.J. Constable (Australia)
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Analysis of variability of krill size and fish by-catch in Japanese krill fishery based on scientific observer data
length and bycatch fish number, the parameters estimated by MCMC hardly show difference among years, sub ... datasets were calculated by the multistage sampling formula with the variance terms derived from the ... objective of a study with considering the cost of observer deployment. Author(s): T. Okuda and M. Kiyota ... cluster units (i.e., year, sub-area, vessel, cruise, and haul) based on a state-space model, separating ...
Meeting Document : WG-EMM-12/68 : Autor(es): T. Okuda and M. Kiyota (Japan)
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Research plan for the exploratory longline fishery for Dissostichus spp. in 2014/15 in Division 58.4.3a
coming years in order to achieve a robust stock assessment that would provide advice on a catch limit ... model structure is improved with sub-fisheries “deep” and “shallow”. Three scenarios are tested. B 0 is ... estimated at around 400 tonnes and B 2013 /B 0 at around 50%. With Petersen’s method, geometric mean stock ...
Meeting Document : WG-SAM-14/17 : Autor(es): Delegation of France
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Disentangling the influence of three major threats on the demography of an albatross community
threats on the demography of seabird communities is vital for evidence-based conservation. Using 20 years ... % of the variability in survival, with higher survival rates following La Niña events. Habitat ... negative relationships with survival, and explained 21.2% and 22.3-31.6% of the variability. Author(s ...
Meeting Document : WG-FSA-2019/34 : Autor(es): J.B. Cleeland, D. Pardo, B. Raymond, G.N. Tuck, C.R. McMahon, R.A. Phillips, R. Alderman, M.-A. Lea and M.A. Hindell
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Report of ACAP Working Group on Status and Trends Agreement on the Conservation of Albatrosses and Petrels – Status and Trends Working Group
, Paragraph 7.2). 2. To progress this review, ACAP’s Advisory Committee established a Working Group with the ... gaps. 3. The data for this review was sought from Parties and Signatories to ACAP that are Breeding ...
Meeting Document : WG-FSA-06/40
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AMLR Hydroacoustic Survey System Description of Methods, A Case Study
, towed hydroacoustic system; 2) real-time analysis of data; and 3) using a structured database which ... with environmental or other biological data. Author(s): M.C. Macaulay (USA) Title: AMLR Hydroacoustic ...
Meeting Document : WG-KRILL-89/10 : Autor(es): M.C. Macaulay (USA)