Résultats de la recherche
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Biological characteristics of Antarctic fish stocks in the Southern Scotia Arc region
final maturation of the gonads takes one year or more whereas in others gonad maturation is completed ... within one season. Length at sexual maturity and length at first spawning in C. gunnari is one year later ... to 1989/90, with its heydays from 1977/78 to 1981/82. Except for Elephant Island, the state of fish ... Antarctic Marine Living Resources Programme carried out two extensive surveys around Elephant Island and the ...
Meeting Document : WG-FSA-99/16 : Auteur(s): K.-H. Kock (Germany), C. Jones (USA) and S. Wilhelms (Germany)
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Report on attendance at the Sixth Meeting of the Committee for Environmental Protection Under the Madrid Protocol
Protected Area (SPA) completed. This year the CEP approved several plans and it was noted that two (ASPA ... ) The CEP received two Working Papers concerning various aspects of Bioprospecting in Antarctica. One ... References. One of these is to: “Seek the advice of SCAR, CCAMLR, COMNAP and other expert bodies, as ... Member (Chile) noted the value of the precautionary ecosystem approach to issues raised by bioprospecting ...
Meeting Document : CCAMLR-XXII/BG/11 : Auteur(s): Chair of the CCAMLR Scientific Committee
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e-sc-xiv-a4.pdf
... . Thus, the fact that krill in a single area are less abundant in one year than another may not be ... in Area 48. At the following Scientific Committee meeting, two basic views were expressed. One ... was high in the survey year is taken into account in calculating the precautionary catch limit. One ... The Ri recruitment rate is the proportion of animals of age i in the population in that year. 5 de la
application/pdf attached to:WG-EMM-95Meeting Report : WG-EMM-95
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Integration of CPUE data into assessments using the Generalised Yield Model
/ Description: For the last three years, CCAMLR's Working Group on Fish Stock Assessment (WG-FSA) has ... year Y is the latest year for which we have data from the fishery, and simulation years Y+l to Y+P ... for fishable biomass, but in two years (1996 and 1997), they fall just outside. The second proposed ... Group on Fish Stock Assessment (WG-FSA) has had available to it two indicators of stock status for ... abunda~lce of the stock in a given year for each trial is provided in output tables. In tlie absence of ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 65–74 : Auteur(s): Kirkwood, G.P. and A.J. Constable
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Joinville–D’Urville Islands (Subarea 48.1) – a former fishing ground for the spiny icefish (Chaenodraco wilsoni), at the tip of the Antarctic Peninsula – revisited
, sparse, being restricted to the two seasons (1978/79 and 1979/80) when Polish and GDR vessels fished in ... Expedition ANT XIX/3 by RV Polarstern in February 2002. Five hauls were conducted north of the two islands at ... two concentrations of C. wilsoni at 62°20’–62°30’S 55°30’–56°00’W in the northern part of the shelf ... the west. Two- to four-year-old fi sh lived pelagically at 20–120 m over depths of 200–400 m ... . wilsoni spent one or two years in midwater and subsurface waters and moved with the coastal current to ... , being restricted to the two seasons (1978/79 and 1979/80) when Polish and GDR vessels fi shed in the ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 1–20 : Auteur(s): Kock, K.-H., L. Pshenichnov, C.D. Jones, K. Shust, K.E. Skora and Zh.A. Frolkina
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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
aged. Subsampling of random lengthfrequency (LF) data used to obtain the samples of fish for ageing ... -estimated parameters. A young-age adjustment (less than 5 years old) to the VB model is also given in order ... 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 ... – 20 year range. This translated to larger predictions for the MLPLB-fi tted curve for ages below 5 ... –age frequency data in the complete catch rather than just the aged random subsample. The diffi culty ... sh that were aged. Subsampling of random length- frequency (LF) data used to obtain the samples of fi ... probabilities may be involved in selecting fi sh from the LF sample. One sampling scheme that could be used is ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 43–66 : Auteur(s): 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 ... 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 ... standard sphere method. In order to calibrate the ES70 system, two transect lines were completed twice
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 ... class; fish from this year class were 20 to 25 cm long in January/February 1976 and 30 to 37 cm in ... 1976 to 1996. Kock Length (cm) 10 20 30 40 50 60 70 80 Length (cm) 1978: no data 10 20 30 ... 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 ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 165–189 : Auteur(s): Kock, K.-H
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e-sc-xxxvi-a05.pdf
... noted that in the past seasons, in one year the work could not be completed due to engine failure ... recapture data (excluding within-year recaptures). Truncation to four years at liberty in the Subarea 48.3 ... four years is appropriate for the assessments. 2.12 The Working Group noted that two studies by ... 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
... for krill during the split-year 1999/2000. The USA advised that two vessels were now licensed to fish ... krill into the area in the intervening period (WG-EMM-99/20). 3.4 Two small-scale acoustic surveys in ... two linked processes involved in recruitment: spawning of adults and survival of larvae through year ... other years in the BAS Core Programme (WG-EMM-99/20). The krill in both survey areas were large, with a
application/pdf attached to:WG-EMM-99Meeting Report : WG-EMM-99