Search results
-
CCAMLR measures regulating the tagging of Dissostichus species, metrics used to assess vessel tagging performance, the potential for some anomalous results, and general recommendations on tagging; a view from the hauling room
triggering the requirement to achieve a tag overlap statistic of 60% or more for upcoming season as specified ... that at low levels of tagging, equating to between 2 and 10 t of Dissostichus catch, there is a strong ... likelihood that a breach of the Measure would occur. We make recommendations from a user perspective on ... potential for some anomalous results, and general recommendations on tagging; a view from the hauling room ...
Meeting Document : WG-FSA-11/50 : Author(s): J.M. Fenaughty (New Zealand) and J. Brown (United Kingdom)
-
DOWN-SCALING FOOSA TO MODEL THE ADMIRALTY BAY PYGOSCELID PENGUIN COLONIES: A WORK IN PROGRESS
. This work-in-progress serves 2 purposes: 1) to use historical data to estimate parameters in a model ... helps to explain trends in adult abundance. From a bottom-up perspective, there appears to be a trade ... foraging conditions during the first winter of life. From a top-down perspective, strong depensatory stock ... ADMIRALTY BAY PYGOSCELID PENGUIN COLONIES: A WORK IN PROGRESS Approval: Approved ...
Meeting Document : WG-EMM-08/51 : Author(s): J.T. Hinke, G.M. Watters and W.Z. Trivelpiece (USA)
-
A preliminary assessment of age and growth of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea, Antarctica
Abstract: Antarctic silverfish (Pleuragramma antarcticum) were sampled during a trawl survey in ... von Bertalanffy growth parameters. The species is relatively slow-growing with a moderate longevity ... separately. Female Antarctic silverfish appear to reach a larger size than males, but none of the estimated ... distribution exhibited a mode from age 6 to 9 years. Author(s): C.P. Sutton and P.L. Horn (New Zealand) Title ...
Meeting Document : WG-FSA-10/20 : Author(s): C.P. Sutton and P.L. Horn (New Zealand)
-
Potential modelling structures for a two-area stock assessment model for Antarctic toothfish (Dissostichus mawsoni) in the Amundsen Sea Region
estimation of biomass in SSRUs 88.2C–G. Additional data resulting from a two-year research plan implemented ... in the future. Results showed that a two-area model with sex- and age-specific migrations from SSRUs ... . Furthermore, a resident population in 88.2H was not required to explain the patterns observed in the data, nor ... plan. Appendix: CASAL files Author(s): S. Mormede, S.J. Parker, A. Dunn and S.M. Hanchet (New Zealand ...
Meeting Document : WG-SAM-15/49 : Author(s): S. Mormede, S.J. Parker, A. Dunn and S.M. Hanchet (New Zealand)
-
A drone-based Antarctic fur seal (Arctocephalus gazella) census of the St. Telmo Islands, South Shetland Archipelago
monitoring. We used a medium-range vertical takeoff and landing (VTOL) UAS to obtain pup counts from the St ... Telmo Islands during the 2018-19 field season. The APH-28 provided a minimally-invasive, robust, and ... 333, which represents a 79% reduction since the most recent survey in 2008, and a 90% reduction from ... soon as is practicable. Author(s): D.J. Krause and M.E. Goebel Title: A drone-based Antarctic fur ...
Meeting Document : WG-EMM-2019/65 : Author(s): D.J. Krause and M.E. Goebel
-
The Continuous Plankton Recorder in the Southern Ocean: a comparative analysis of zooplankton communities sampled by the CPR and vertical net hauls along 140°E
Abstract: A repeat transect was run south of Tasmania, along ~140°E, during November and December ... 2001. NORPAC nets were deployed during a CTD transect on the southern leg, sampling four depth zones at ... each of 19 stations: 0–20, 20–50, 50–100 and 100–150 m. A Continuous Plankton Recorder (CPR) was ... , indicating that all communities had a similar distribution of abundance amongst species. There was little ...
Meeting Document : WS-BSO-07/P5 : Author(s): Hunt, B.P.V and G. Hosie
-
Revised reports on abundance and biological information on toothfish in Division 58.4.4 a and b by Shinsei Maru No. 3 in 2010/11 season
Abstract: A survey was conducted in order to collect information for the stock status and various ... biological information on toothfish in Division 58.4.4a & b (Ob Lena Bank) by using a commercial bottom ... in the shallow area < 500 m in the 2010/11. A total of 189 individuals of toothfish with good ... between the fish released with tag and that of overall catch was considerably high (θ=95 %). There was a ...
Meeting Document : WG-FSA-11/14 : Author(s): K. Taki, T. Iwami and M. Kiyota (Japan)
-
Distribution and possible areas of spatial mixing of two stocks of humpback whales, a krill predator, in the Indo-Pacific region of the Antarctic revealed by genetic analyses
of two stocks of the humpback whale, a krill predator, in the Indo-Pacific region of the Antarctic ... addition, the Antarctic samples were analyzed with a set of eleven microsatellite DNA loci (independent ... suggested the following: i) Western Australian whales distribute mainly in Areas IV, and probably mix with a ... substantial numbers; iii) Eastern Australian whales distribute mainly in Area VW, and probably mix with a ...
Meeting Document : WG-EMM-2019/67 : Author(s): L.A. Pastene, M. Goto, M. Taguchi and K. Matsuoka
-
OPTIMISING THE DESIGN OF LARGE-SCALE GROUND SURVEYS OF ADÉLIE PENGUIN ABUNDANCE USING VIRTUAL SIMULATION IN A GEOGRAPHIC INFORMATION SYSTEM
virtual simulation in a GIS environment to explore how the recommended area/density approach can be ... approach is illustrated using a case study of a large-scale ground survey of Adélie penguins. The findings ... LARGE-SCALE GROUND SURVEYS OF ADÉLIE PENGUIN ABUNDANCE USING VIRTUAL SIMULATION IN A GEOGRAPHIC ...
Meeting Document : WG-EMM-11/42 : Author(s): C. Southwell, R. Driessen and S. Candy (Australia)
-
Preliminary assessment of mackerel icefish (Champsocephalus gunnari) in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), based on a survey in July 2007, using the generalised yield model
Abstract: A survey of mackerel icefish, Champsocephalus gunnari, was undertaken in Division ... -term annual yield in the 2007/2008 CCAMLR season. This paper provides a preliminary assessment of yield ... mackerel icefish, and an increase on the recommended catch over the projection. Based on a similar cohort ... (Champsocephalus gunnari) in the vicinity of Heard Island and McDonald Islands (Division 58.5.2), based on a survey ...
Meeting Document : WG-FSA-07/47 : Author(s): D.C. Welsford (Australia)