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A von Bertalanffy growth model for toothfish at Heard Island fitted to length-at-age data and compared to observed growth from mark–recapture studies
-estimated parameters. A young-age adjustment (less than 5 years old) to the VB model is also given in order ... aged. Subsampling of random lengthfrequency (LF) data used to obtain the samples of fish for ageing ... Paper Title: A von Bertalanffy growth model for toothfish at Heard Island fitted to length-at-age ... data and compared to observed growth from mark–recapture studies Abstract / Description: Length-at-age ... –age frequency data in the complete catch rather than just the aged random subsample. The diffi culty ... (Pop) = μ(A, θ) + ε where L is length (mm), A is age (years), θ = (L∞, κ, t0) are the VB parameters ... years in age. This is due to the combined effect of natural and fi shing mor- tality and the effect of ... mean length-at-age for ages above 15 years. When length bin relative sampling frequencies were also ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 43–66 : Autor(es): Candy, S.G., A.J. Constable, T. Lamb and R. Williams
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e-sc-xxxvi-a04.pdf
... The template has two output variables for 120 kHz. One variable ‘Krill NASC from mean Sv’, produces ... consistent with scientific surveys conducted in this subarea in previous years. The authors of SG-ASAM-17/04 ... are planning to analyse the data from the two surveys following the swarm- based approach developed at ... details of these two surveys conducted by Korean scientists that represented a significant advance in the
application/pdf attached to:SG-ASAM-17Meeting Report : SG-ASAM-17
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Changes in the fish biomass around Elephant Island (Subarea 48.1) from 1976 to 1996
from 1978/79 to 1988/89, with most of the commercial harvesting taking place in the first two years of ... for finfishing from 1989/90 onwards. Results of the first bottom trawl survey carried out after the ... 564 Kock 80"W Latitude 20°W Weddell Sea km m 0 200 400 70"s . - Figure 1: Area of ... ) 10 20 30 40 50 Length (cm) Length (cm) m S 6 - 3 5 - 5 4 - 10 20 30 40 50 Length (cm ... 1976 to 1996. Kock Length (cm) 10 20 30 40 50 60 70 80 Length (cm) 1978: no data 10 20 30 ... class; fish from this year class were 20 to 25 cm long in January/February 1976 and 30 to 37 cm in ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 165–189 : Autor(es): Kock, K.-H
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e-sc-xxxvi-a05.pdf
... four years is appropriate for the assessments. 2.12 The Working Group noted that two studies by ... recapture data (excluding within-year recaptures). Truncation to four years at liberty in the Subarea 48.3 ... noted that in the past seasons, in one year the work could not be completed due to engine failure ... Working Group on Statistics, Assessments and Modelling (Buenos Aires, Argentina, 26 to 30 June 2017
application/pdf attached to:WG-SAM-17Meeting Report : WG-SAM-17
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e-sc-xviii-a4.pdf
... other years in the BAS Core Programme (WG-EMM-99/20). The krill in both survey areas were large, with a ... krill into the area in the intervening period (WG-EMM-99/20). 3.4 Two small-scale acoustic surveys in ... for krill during the split-year 1999/2000. The USA advised that two vessels were now licensed to fish ... not vary over age or between years; 100% of age-1 animals spawn; a representative sample of the
application/pdf attached to:WG-EMM-99Meeting Report : WG-EMM-99
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e-sc-xxx.pdf
... notified catch was 391 000 tonnes (Annex 4, paragraph 2.9). 3.8 The notification for one of the two ... previously notified. 3.10 Ukraine submitted a late notification for one vessel and an expected catch of 30 ... the research survey. 3.59 The Scientific Committee noted that there had now been two years of ... ............. 19 Other fisheries ........................................................................ 20
application/pdf attached to:SC-CAMLR-XXXMeeting Report : SC-CAMLR-XXX
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Estimating optimal observer coverage in the Antarctic krill fishery
: observers have been placed on approximately 50% of vessels fishing in any one season, and have been present ... on board for about 30% of that season. They have achieved a rate of krill sampling equivalent to 18 ... vessels sampled each season, 20% of total season hauls sampled for krill and an equivalent or higher ... . The South Georgia data suggest that such strategies should be pursued for at least four years before ... 32 Fo ro s 20 02 25 0 90 72 80 28 29 39 11 N iit ak a M ar u 20 ... ar u 20 07 66 1 15 7 48 31 20 7 42 3 Sa ga S ea 20 07 30 3 30 7 ... st in 20 08 71 55 21 38 21 30 10 0 30 A ve ra ge s 62 ... by a vessel per sea- son being sampled; • all vessels being observed at least once every two years ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Autor(es): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards
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e-sc-xiii-a8.pdf
... birds (four white-chinned petrels, two albatrosses - one a black- browed albatross), a rate of 0.66 ... , two lines are laid, one the fishing line holding the branchlines and hooks, and the other joined to ... fishery in 1993/94. An average of one to two birds is reported to be killed during each longline setting ... breeding population. In addition, population growth rates will take approximately 30 to 50 years to
application/pdf attached to:WG-IMALF-94Meeting Report : WG-IMALF-94
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Schedule for the Thirty-sixth Meetings of the Commission and the Scientific Committee
measures (cont.) 3.1 Harvested species: krill 18:00 Chairman's Welcome Function- RACV/RACT Hobart ... Review of 2017 Budget SCAF 6.2 Draft budget for 2018 Preparation of report 15:30-16:00 Refreshment Break ... Chairman's Closing Function- The Duke Hotel ... Monday, 16 October Time Commission Commission (SCIC) Scientific Committee 08:00-08:30 Registration for SC ...
Page : Site Section: Meetings
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e-sc-xxii-a4-appD.pdf
... monitored, Type I error levels and one- or two-sided tests. 23. Serial correlation in CEMP indices, which ... (paragraphs 33 to 39). 27. The workshop discussed the issue of one- and two-tailed tests in the context of a ... ; (ii) use of a two-tailed test at all stages of monitoring; and (iii) the use of ‘asymmetrical’ one ... mean that management action would be taken unnecessarily one in 20 times. Since the probability of
application/pdf attached to:CEMP-REVIEW-WS-03Meeting Report : CEMP-REVIEW-WS-03