Résultats de la recherche
-
Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons
Abstract: Data collected from the FN American Champion during Phases 1 and 2 of the experimental ... fit to CPUE and cumulative catch data from the Phase 2 depletion experiments did not have significant ... local abundances of P. spinosissima. Approximately 6000 crabs were tagged and released during Phase 2 ... and density were made for the area around Phase 2's third depletion square. The assumptions of ...
Meeting Document : WG-FSA-96/34 : Auteur(s): Watters, G.
-
East Antarctica Planning Domain MPA Planning Reference Document #1: Draft MPA Report Part 1 – the Planning Domain and Candidate MPAs
planning domain and candidate MPAs (WG-EMM-14/48, Sections 1, 2, and 3), Part 2- Description of the ... provides the first part, with the following sections: (1) Introduction, (2) Objectives for the planning ... ) Identification of candidate MPAs, (6) Analysis of outcomes, (7) Data holdings at the Secretariat. Parts 2 & 3 ...
Meeting Document : SC-CAMLR-XXXIII/BG/38 : Auteur(s): Delegations of Australia and France
-
Density estimation of Antarctic krill (Euphausia superba) around South Shetland Island and Elephant Island (Subarea 48.1) using two frequencies with 38 and 120 kHz
) each transects krill AT. The weighted krill density was estimated to be 4.27 g/m 2 (CV=43.42%) applying ... (a) total krill AT and 4.17 g/m 2 (CV=44.23%) applying (b) each transects krill AT using swarm ... integration method and 3.70 g/m 2 (CV=43.83%) applying (a) total krill AT and 3.49 g/m 2 (CV=43.60%) applying ...
Meeting Document : SG-ASAM-2019/03 Rev. 1 : Auteur(s): S. Choi, S. Chung, I. Han, W. Oh, D. An and K. Lee
-
Distribution and abundance of Antarctic krill (Euphausia superba) off East Antarctic (30–80°E) in January–March 2006
-2. B0 was estimated to be 12.46 million tonnes with a CV of 15.15%. Krill were widely distributed at ... relatively low densities throughout the survey area; only 13% of the 2-km-alongtrack echo-integration ... intervals were devoid of krill, 50% of intervals registered densities of 1 g m-2 of krill or less, and 80 ... % of intervals registered densities of 10 g m-2 or less. Mean densities were highest in the waters to ...
Meeting Document : WG-EMM-07/33 : Auteur(s): T. Jarvis, N. Kelly, E. van Wijk, S. Kawaguchi and S. Nicol (Australia)
-
A revised estimate of short-term yield for the mackerel icefish (Champsocephalus gunnari) off Heard Island based on a trawl survey in 1998
Abstract: A random stratified trawl survey of Mackerel icefish in 2 populations (Plateau and ... Shell Bank) in the vicinity of Heard Island enabled a revised estimate of yield for the coming 2 seasons ... population. Unlike the previous 3 years, the Age 2 cohort in 1998 is very weak and is expected to contribute ... little to the biomass in subsequent years. If recruitment to Age 2 in 1999 is also weak then the fishery ...
Meeting Document : WG-FSA-98/54 : Auteur(s): A. Constable and D. Williams (Australia)
-
Multiple acoustic estimates of krill density at South Georgia during 2000/2001 reveal significant intra-annual and spatial variability
very low (3.5 g m-2) but rose significantly (P = 0.048) by mid-season (to 34.7 g m-2). In a pattern ... was less than that in the eastern box (80.4 g m-2). Analysis of mid-season western survey box transect ... off the central north coast of South Georgia mid-season revealed a krill density of 47.2 g m-2 that ... density to the south-west of South Georgia was 32.1 g m-2 mid-season. By March, krill density in the ...
Meeting Document : WG-EMM-01/15 : Auteur(s): A.S. Brierley, C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst (United Kingdom)
-
A RISK ASSESSMENT TO ADVISE ON STRATEGIES FOR SUBDIVIDING A PRECAUTIONARY CATCH LIMIT AMONG SMALL-SCALE MANAGEMENT UNITS DURING STAGE 1 OF THE STAGED DEVELOPMENT OF THE KRILL FISHERY IN SUBAREAS 48.1, 48.2, AND 48.3.
selecting among Fishing Options 2, 3, and 4 are tradeoffs between the risks to predator populations and ... . Implementation of Fishing Option 2 (using the subdivisions reported here) will require that the fishery mostly ... move, to a lesser extent than Fishing Option 2. Up to harvest rates defining the current trigger level ... Fishing Option 3 than for Fishing Option 2 because the former option requires slightly more fishing in ...
Meeting Document : WG-EMM-08/30 : Auteur(s): G.M. Watters, J.T. Hinke (USA) and S. Hill (United Kingdom)
-
Supervised and unsupervised (RapidKrill) estimates of krill density from DY098
produces a krill density of 8.60 gm-2, compared with 21.76 gm-2 (supervised) or 20.41 gm-2 (unsupervised ...
Meeting Document : SG-ASAM-2019/09 : Auteur(s): A. Ariza, S. Fielding and R. Blackwell
-
SUMMARY OF SCIENTIFIC OBSERVATIONS IN THE CAMLR CONVENTION AREA FOR 2009/10 SEASON
on board longline, trawl and pot vessels in 2009/10. Longline Observations 2. A total of 31 longline ... undertaken in Subarea 48.4 by 2 vessels, three cruises was undertaken in Subarea 48.6 and Divisions 58.4.1 ... , 58.4.2, 58.4.3a and 58.4.3b by 3 vessels, 3 cruises were conducted by 2 vessels in Division 58.5.2 (one ... using the total numbers of hooks observed and the total observed seabird mortality (Table 2). Two ...
Meeting Document : WG-FSA-10/05 : Auteur(s): Secretariat
-
Krill biomass estimates for two survey boxes to the north east and north-west of South Georgia in January 1996: the beginning of a five-year monitoring program
high and where numerous observations of elevated krill abundance have been made. Box 2 was located to ... caused by diel vertical migration. Echoes were integrated in 2 m depth bins from 2 to 250 m below the ... mm for box 1 and 32.0 mm for box 2 were determined. Thresholded (mvbs 120 kHz minimum-100 dB) 120 and ... 38 kHz) into those attributable to krill (δmvbs between 2 and 12 dB), small zooplankton (δmvbs > ...
Meeting Document : WG-EMM-96/18 : Auteur(s): Watkins, J.L., Murray, A.W.A., Brierley, A.S.