Résultats de la recherche
-
Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Division 58.4.1
-SAM meeting. We tentatively recalculated a sample size of Dissostichus spp in each block in such a way ... that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of coefficient ... variance of biomass estimate from the bootstrapped procedure, under the condition that the exploitation ... to estimate appropriate catch limit, we propose to conduct the current research operation for at ...
Meeting Document : WG-FSA-13/38 : Auteur(s): Delegation of Japan
-
Revised research plan for the 2013/14 exploratory longline fishery of Dissostichus spp. in Division 58.4.2
last WG-SAM meeting. We tentatively recalculated a sample size of Dissostichus spp in each block in ... such a way that the numbers of tag recoveries in the 2016 season shows an approximately 0.3 of ... coefficient variance of biomass estimate from the bootstrapped procedure, under the condition that the ... to estimate appropriate catch limit, we propose to conduct the current research operation for at ...
Meeting Document : WG-FSA-13/39 : Auteur(s): Delegation of Japan
-
Reproductive ecology of Antarctic toothfish, Dissostichus mawsoni (Norman, 1937) (Actinopterygii: Nototheniidae), in the Antarctic waters (SSRUs 58 and 88)
of Antarctic toothfish showed the highest proportion with 62.7% at the mature stage, and followed by ... Abstract: Total numbers of Antarctic toothfish collected in the CCAMLR Conservation Zone were 600 ... fish which consist of 306 fish from the 58 area and 294 fish from the 88 area during February through ... higher total length. The ratio of female among the 857 specimens of Antarctic toothfish collected from ...
Meeting Document : WG-FSA-18/65 : Auteur(s): J.-W. Kim, S.-G. Choi, S. Chung and D.H. An
-
Modelling the impact of fishery by-catches on albatross populations
parameters in the model. 3. The model used two alternative assumptions about patterns of at-sea distribution ... developed a deterministic, density-dependent, age-structured model for assessing the effects of longlining ... on wandering albatross populations. We used demographic data from field studies at South Georgia and ... tuna longline fisheries south of 30 S, to model estimated by-catch levels and other population ...
Meeting Document : WG-FSA-01/18 : Auteur(s): G. Tuck, T. Polacheck (Australia), J.P. Croxall (UK) and H. Weimerskirch (France)
-
Monitoring a marine ecosystem using responses of upper trophic level predators
Abstract: 1. This study examined the changing status of the marine ecosystem at the island of ... index (CSI). 2. Sensitivity analyses showed that missing values had a large effect upon the accuracy of ... the CSI but this effect was reduced if the individual variables were highly correlated. The level of ... correlation and proportion of missing values within the empirical data set were within the acceptable range ...
Meeting Document : WG-EMM-01/25 : Auteur(s): I.L. Boyd and A.W.A. Murray (United Kingdom)
-
Summary of research voyages in the South Orkney Islands region in 2015/16
undertaken in the austral summer of 2015-16. It collected at-sea data on the distribution, abundance and ... vessel and field camps on Monroe Island, Powell Island and at Signy where satellite tracking of penguins ... inform the further development of spatial management, including feedback management of the krill fishery ... behaviour of krill and its predators across a range of temporal and spatial scales using acoustics, nets and ...
Meeting Document : SC-CAMLR-XXXV/BG/28 : Auteur(s): Delegations of the United Kingdom and Norway
-
Research plan for the 2016/17 exploratory longline fishery of Dissostichus spp. in Subarea 48.6 by South Africa and Japan
precautionary biomass for D. mawsoni in block 48.6_2 and 48.6_3 because of recaptures with short period at ... . We investigated the biological features of D. mawsoni using Observer data. The geographical ... distribution of sizes, GSI and Fulton’s condition factors for D. mawsoni in Subarea 48.6 suggest that northward ... and preliminary CASAL models. We divided the two areas for block 48.6_2 by latitude of 55.2°S to ...
Meeting Document : WG-SAM-16/07 : Auteur(s): Delegations of Japan and South Africa
-
The application of CCAMLR Ecosystem Monitoring Program (CEMP) standard methods in the Antarctic site inventory project
changes in fauna, flora, and other major features at these sites; and how best to minimize potential ... adverse impacts of human visitor activity. CEMP Standard Methods were relied upon in establishing the ... project's methodology, particularly with respect to counting penguin nests and chicks. At each site ... power P (= 1-ß) ≥ 0.8. Author(s): Naveen, R. Title: The application of CCAMLR Ecosystem Monitoring ...
Meeting Document : WG-EMM-97/38 : Auteur(s): Naveen, R.
-
Analysis of seamount-specific catch and tagging data in the Amundsen Sea, SSRU 88.2H
is recommended that the stock assessment include only recaptures of tagged fish that have been at ... features in SSRU 88.2H were analysed to compare multiple raw indicators of biomass trends in isolated local ... catch data are unlikely to index abundance at small temporal and spatial scales. Although indicative ... the choice of reference area, the method produced lower biomass estimates than mark-recapture ...
Meeting Document : WG-SAM-14/27 : Auteur(s): S.J. Parker (New Zealand)
-
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 ... mesh and all sampling was conducted between 47°S and the Southern Polar Front (S-PF) at ~61°S ...
Meeting Document : WS-BSO-07/P5 : Auteur(s): Hunt, B.P.V and G. Hosie