Search results
-
Preliminary model of krill fishery behaviour in Subarea 48.1
Abstract: A simple deterministic model is described which models the behaviour of the krill ... fishery in Subarea 48.1 and estimates the effort applied and the catch of krill in fine-scale squares ... . The distribution of catches predicted by the model, which is restricted to the months December to ... March, compare favourably with the general distribution of catches in Subarea 48.1. A number of ...
Meeting Document : WG-KRILL-93/14 : Author(s): D.J. Agnew (Secretariat)
-
Some aspects of the by-catch fish spawning and oogenesis
Abstract: On the basis of the biological material collected on some by-catch fishes during ... Antarctic toothfish fishery from 2002 till 2008 in different areas of the Southern Ocean (Collaboration Sea ... , D'Urville, Ross and.mundsen Seas) it was established that spawning of C. dewitti and species X ... continental shelf at depth of 300-600 m during summer season (may be autumn for sp. X) of the southern ...
Meeting Document : WG-FSA-10/51 : Author(s): V. Prutko (Ukraine) and D. Chmilevsky (Russia)
-
Preliminary analyses in support of the CEMP Review Workshop: power analyses
Abstract: A series of power (sensitivity) analyses of CEMP indices was made using the DOS-based ... change over the range –10% to +10% of a mean survey value. Each run of MONITOR involved the calculation ... of power for 3 survey scenarios and 3 alpha levels (0.05, 0.10 and 0.20). The 3 surveys scenarios ... were chosen to represent time series data from annual surveys conducted annually over periods of 5, 10 ...
Meeting Document : WG-EMM-03/26 : Author(s): Secretariat
-
A preliminary assessment of mackerel icefish (Champsocephalus gunnari) in Division 58.5.2, based on recent survey results
vicinity of Heard Island during April-May 2011. This paper provides a preliminary assessment of mackerel ... icefish population structure, abundance and yield for the area of Division 58.5.2 to the west of 79 o 20 ... ’ E using standard CCAMLR methods. A pattern of 5 year classes being present simultaneously in the ... population, which was first detected in 2011, has persisted, however a large cohort of fish, estimated to be ...
Meeting Document : WG-FSA-12/26 : Author(s): D.C. Welsford (Australia)
-
Discharge of offal in the Ross Sea – follow up to COMM CIRC 15/15–SC CIRC 15/06
an analysis of the information provided by New Zealand in previous years (COMM CIRC 13/09), along ... facilitate further investigation. In 2013 reports of offal were tightly clustered in a small area on the ... border of SSRUs 88.H and J, whereas in 2015 the reports were received from a broader area. For each ... 10 kilometres of the reported location during the 5 days preceding the date of the report ...
Meeting Document : CCAMLR-XXXIV/BG/10 : Author(s): CCAMLR Secretariat
-
Preliminary tag-recapture based population assessment of Antarctic toothfish (Dissostichus mawsoni) in Subarea 48.4
Abstract: The biomass of Antarctic toothfish (D. mawsoni) in CCAMLR subarea 48.4 is estimated ... from tagging returns to average 1109 tonnes since 2010, with a five-year (2015-2019) average biomass of ... 1187 tonnes. Applying the CCAMLR agreed precautionary assumption of average biomass across the time ... series and harvest rate of γ = 0.038, implies a 2019/20 yield of 45 tonnes using the 5-year average ...
Meeting Document : WG-FSA-2019/27 : Author(s): T. Earl and A. Riley
-
Standardised CPUE analysis of the Antarctic toothfish fishery in CCAMLR Subarea 88.1 from 1988/89 to 2003/04
to 2004, in Subareas 88.1 and 88.2. A preliminary standardised analysis of toothfish CPUE (catch (kg ... addition of data from the 2004 season using data sets based on all vessels and the two main New Zealand ... using mixed-effect models following Candy (2003). The variables entering each of the three models were ... similar and all explained a reasonable amount (35-46%) of the variation. The variables included in the ...
Meeting Document : WG-FSA-04/25 : Author(s): N.L. Phillips, R.G. Blackwell and S.M. Hanchet (New Zealand)
-
Entanglement of pinnipeds at Marion Island
Abstract: Forty-two sightings of 28 individual pinnipeds with neck collars were observed from ... April 1991 to June 1995 at Marion Island, Southern Ocean. One of the individuals was an elephant seal ... . tropicalis. Fifty percent of neck collars on fur seals were removed. The incidence of entanglement of fur ... seals lies between 0,014 and 0,16 % of the population. Author(s): Delegation of South Africa Title ...
Meeting Document : SC-CAMLR-XIV/BG/17 : Author(s): Delegation of South Africa
-
Proposal to commission an independent review of the Secretariat’s data management systems
Abstract: Abstract The Secretariat manages a comprehensive, detailed set of independent or ... related databases which support the work of the Commission and give effect to Article XX of the CAMLR ... Convention. Since the establishment of CCAMLR 28 years ago, there has been no formal, in-depth audit of the ... the merits of an independent review of the Secretariat’s data management systems Author(s ...
Meeting Document : CCAMLR-XXIX/13 : Author(s): Secretariat
-
Trophic niche of the Antarctic toothfish caught in SSRU 88.3 as inferred from fatty acids and stable isotopes
Abstract: To highlight ontogenetic and geographical variability in resource utilization of ... of toothfish and their potential prey (bycatch and stomach contents), captured in fisheries in the ... Ocean sector of the Antarctica during 2012–2017. We found significant differences in size distributions ... of regional toothfish stocks, demonstrating an ontogenetic movement into deeper water from shelf ...
Meeting Document : WG-FSA-18/21 : Author(s): C.-K. Kang, S.-G. Choi, H.Y. Kang, Y.-J. Lee, S. Chung and D.H. An