Search results
-
Stock structure of Antarctic toothfish in Statistical Area 88 and implications for assessment and management
Abstract: We review the stock structure of Antarctic toothfish in Statistical Area 88 with the ... the movement patterns and linkages of Antarctic toothfish in the 80–120 cm size range, throughout the ... portions of the Bellingshausen Sea (SSRUs 88.3A-D) and juveniles in SSRUs 88.2C–G is a priority. Author(s ... aim of characterising the likely stock boundaries relative to stock assessments. We include ...
Meeting Document : WG-SAM-14/26 : Author(s): S.J. Parker, S.M. Hanchet and P.L. Horn (New Zealand)
-
Variation in reproductive performance of seabirds and seals at South Georgia, 1976–1986 and its implications for southern ocean monitoring studies
Orkney Islands) are summarised and reviewed. Breeding success of the Wandering Albatross, which breeds in ... . The fluctuations in reproductive performance of the krill-eating, summer-breeding penguins at Signy ... Chinstraps, which suffered badly in 1980-81 and 1982-83) with the date of ice break-out in late spring ... , penguin and fur seal biology. The results are reviewed in terms of their suitability for detecting changes ...
Meeting Document : SC-CAMLR-VI/BG/15 : Author(s): J.P. Croxall, T.S. McCann, P.A. Prince and P. Rothery (United Kingdom)
-
Updated description of Patagonian toothfish (Dissostichus eleginoides) tagging and ageing programs in Division 58.5.2, 1997–2015
Abstract: In 2014, CCAMLR endorsed a TAC of 4410 t of Patagonian toothfish in Division 58.5.2 ... . This report describes the recent fishing and data collection activities in the fishery. The fleet has ... enhance the tagging program that was established in 1998, the fleet has increased tagging rate in this ... , considerably adding to information on the structure of the population. The ageing program at AAD has produced ...
Meeting Document : WG-FSA-15/55 : Author(s): D.C. Welsford, B. Farmer, T.D. Lamb, C. Péron, E. Woodcock and P.E. Ziegler (Australia)
-
New possibilities of krill-dependent indicator species monitoring – UAV survey in Subarea 48.1
software. In selected colonies a comparison with the results of measurements taken at the same time from ... identified in 2016. The use of UAV for monitoring of indicator species enabled data acquisition from areas ... performed. The total flight time of the missions was 40 hours and 56 minutes. Flights covered the area of ... resolution GSD (ground sample distance) of 3-6 cm. Obtained images were used for the estimation of population ...
Meeting Document : WG-EMM-17/03 : Author(s): M. Korczak-Abshire, A. Zmarz, M. Rodzewicz, R. Storvold, M. Kycko, I. Karsznia, A. Kidawa and K.J. Chwedorzewska
-
Meta-analysis of catch reporting in CCAMLR exploratory fisheries
Abstract: The Secretariat has prepared a meta-analysis of the target and by-catch reported in ... that were identified in 2015 remain apparent in the data. Measures to improve the quality of bycatch ... data reported in CCAMLR fisheries may include the development of a detailed manual on by-catch sampling ... CCAMLR exploratory fisheries (as an update to WG-FSA-15/04 Rev. 1). The number of fish belonging to ...
Meeting Document : WG-FSA-18/14 : Author(s): CCAMLR Secretariat
-
Preliminary tag-recapture based population assessment of Antarctic toothfish in Subarea 48.4
Abstract: The stock of Antarctic toothfish (D. mawsoni) in CCAMLR subarea 48.4 is estimated from ... tagging returns to be 982 tonnes in 2018. Applying the CCAMLR agreed precautionary assumption of average ... biomass across the time series and harvest rate of γ = 0.038, implies a 2018/19 yield of 37 tonnes ... , unchanged from the 2017/18 catch limit. Historically, a precautionary approach has been applied in treating ...
Meeting Document : WG-FSA-18/26 : Author(s): T. Earl and A. Riley
-
Review of cetacean depredation in CCAMLR statistical subareas
assessments through the underestimation of total mortality resulting from fishing and depredation combined. In ... other subareas the problem is known but not currently addressed. The areas in which the establishment of ... situation, and could thus benefit of the methods and approaches tested in other subareas. Author(s): M ... Abstract: Depredation, the removal of fish from longlines by large marine predators, has been ...
Meeting Document : WG-SAM-15/27 : Author(s): M. Soeffker (United Kingdom) and P. Tixier (France)
-
Report of vulnerable marine ecosystems in South Georgia Islands (CCAMLR Subarea 48.3) through research dredge sampling
Abstract: In this contribution we report the presence of 6 vulnerable marine ecosystems (VME ... here with previous reports in the same area. Thus, owing to high diversity and abundance of indicators ... by fishing activity in the area of the CCAMLR convention. Author(s): E. Gaitán, L. Schejter, D ... inclusion in the CCAMLR VME registry, were detected during a research cruise performed by the National ...
Meeting Document : WG-FSA-13/58 : Author(s): E. Gaitán, L. Schejter, D. Giberto, M. Escolar and C. Bremec (Argentina)
-
Entanglement of Antarctic fur seals in man-made debris at Bird Island, South Georgia
Abstract: The incidence of entanglement of Antarctic fur seals (Arctocephalus gazella) in Man ... incidence of entanglement during the pup-rearing period was slightly higher than in the previous year (48 ... , respectively). Polypropylene straps (44%), of the type used in packaging bands, and fishing net fragments (27 ... -made debris at Bird Island, South Georgia, was monitored throughout the austral winter and summer of ...
Meeting Document : SC-CAMLR-XI/BG/09 : Author(s): Delegation of United Kingdom
-
On peculiarities of icefish (Champsocephalus gunnari) vertical distribution in different habitats
Abstract: The significant similarity of Kerguelen and South Georgia icefish Ch.gunnari ... populations ecology has been revealed. Fish of all lengths and ages are planktonphages. Fish of the first two ... age groups have been continuously found in the pelagic layer off South Georgia and Kerguelen-Heard ... . Immature fish also partially distribute in the pelagic layer both in the daytime and at night. Mature fish ...
Meeting Document : WG-FSA-03/54 : Author(s): J.A. Frolkina (Russia) and V.V. Herasimchuk (Ukraine)