Résultats de la recherche

1. ESTIMATION OF MANAGEMENT REFERENCE POINTS CONSISTENT WITH THE CATCH TRIGGER LEVEL FOR THE ANTARCTIC KRILL FISHERY IN AREA 48

   biomass reference points for the krill fishery in CCAMLR Area 48 consistent with the catch trigger level ... of F and SSB reference points for the krill stock in Area 48 consistent with the catch trigger level ... are 0.0159 (95 % CIs: 0.00750 – 0.0357) and 97.7 % SSB0 (80 % CIs: 71.6 – 135 %) respectively. In ... increases substantially with increased recruitment variability, though in absolute terms remains negligible ...

   Meeting Document : WG-EMM-11/17 : Auteur(s): T. Peatman, J. Moir Clark, D.J. Agnew (UK)

2. Managing ecosystem uncertainty: critical habitat and dietary overlap of top-predators in the Ross Sea

   Abstract:  We summarize three types of data in order to increase appreciation among fishery ... managers of the close spatial and temporal ecological overlaps among top predators in the Ross Sea Shelf ... whale, though other species might also soon be exploited in the Ross Sea region. In addition to those ... two predators we also include other trophic competitors and (and in two cases predatory species ...

   Meeting Document : WG-EMM-06/29 : Auteur(s): Testa, J.W., Stewart, B.S., Olmastroni, S., Lyver, P., Karl, B., Eastman, J., Barton, K., Ballard, G., Toniolo, V., Wilson, P., Ainley, D.

3. GIS ‘ChartMaster’ for aquatic living resources research in Antarctic

   Abstract:  Geographic Information Systems (GIS) find increasing application in different fields of ... and abundance; to estimate the instant biomass in the surveyed area; to carry out the survey planning ... and designing; to carry out adaptive planning during the survey in order to localize and outline the ... for studying aquatic living resources in the Antarctic waters: The Chart of possible catches of ...

   Meeting Document : WG-SAM-13/04 : Auteur(s): V.A. Bizikov, S.M. Goncharov, A.V. Polyakov, S.B. Popov and A.F. Petrov (Russia)

4. PENGUIN RESPONSES TO CLIMATE CHANGE IN THE SOUTHERN OCEAN

   Abstract:  Penguins are adapted to live in extreme environments, but they can be highly sensitive ... , oceanography and critical habitats. For example, in the southwest Atlantic, the distributional range of the ice ... and chinstrap penguins have expanded their range southward. In the Southern Ocean, the El Niño ... changes in the marine ecosystem, ultimately affecting penguins. The interaction between these modes is ...

   Meeting Document : WG-EMM-09/P09 : Auteur(s): J. Forcada and P.N. Trathan

5. LENGTH AND AGE AT SPAWNING OF ANTARCTIC TOOTHFISH DISSOSTICHUS MAWSONI IN THE ROSS SEA

   spawn in a given year and is therefore appropriate to evaluate spawning stock biomass relative to stock ... male Antarctic toothfish Dissostichus mawsoni from fish sampled in the Ross Sea spanning the 2000-2009 ... cortical alveoli stage at least a year prior to spawning. Individual oocytes are then recruited into the ... vitellogenic phase over at least a 6–12 month period, resulting in a developed batch of oocytes accumulating at ...

   Meeting Document : WG-FSA-09/37 : Auteur(s): S.J. Parker and P.J. Grimes (New Zealand)

6. Models of Antarctic marine ecosystems in support of CCAMLR and IWC: background

   is currently in draft form open to comment and is being developed to provide an introduction to the ... to the use of ecosystem models in CCAMLR and the IWC and a history of the developmental work in those ... that need to be considered in parameterising a model, providing input data for those models and for ... addressing uncertainties in this process. Lastly, it summarises the modelling platforms being developed in ...

   Meeting Document : CCAMLR-IWC-WS-08/03 : Auteur(s): Constable, A.

7. The Role of Fish as Predators of Krill (Euphausia superba) and Other Pelagic Resources in the Southern Ocean

   Abstract:  First attempts were made in the early 1980’s to estimate the krill and pelagic food ... -Antarctic Zone in the late 1980’s and early 1990’s when these areas were exploited commercially and a larger ... taken by mesopelagic fish in the Atlantic Ocean sector only. However, these estimates still have wide ... hydro-acoustic biomass estimates conducted in the late 1980’s and the lack of quantitative food ...

   Meeting Document : CCAMLR-IWC-WS-08/09 : Auteur(s): Collins, M.A., Williams, R., Agnew, D.J., Kock, K.-H., Belchier, M., Shust, K.V., Welsford, D., Hanchet, S., Pshenichnov, L., Barrera-Oro, E.

8. Diet and trophic niche of Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea, Antarctica

   stomach contents of specimens collected in the Ross Sea (71°–77°S, 165°E–180°) in January–March 2008 ... of prey in stomachs, fish (silverfish and lanternfish) and krill dominated diet overall (48% and 22 ... by silverfish occurred mainly in the extreme south-west of the region and near the continental slope ... . By weight, krill identified to species level in silverfish stomachs were predominantly Euphausia ...

   Meeting Document : WG-EMM-12/54 : Auteur(s): M.H. Pinkerton, J. Forman, S.J. Bury, J. Brown, P. Horn and R.L. O’Driscoll (New Zealand)

9. An updated spatially explicit population dynamics operating model for Antarctic toothfish in the habitable depths of the Ross Sea region

   model for Antarctic toothfish in the Ross Sea region, for a medium scale spatial resolution (189 spatial ... cells) covering the Ross Sea region. We build on the previous working medium-scale model in which the ... population was restricted to those cells in which at least 5% of cell area was of a depth deemed suitable as ... unsatisfactory in previous models, with a much flatter maturity ogive than that derived through histology. In the ...

   Meeting Document : WG-SAM-14/31 : Auteur(s): S. Mormede, A. Dunn, S. Parker and S. Hanchet (New Zealand)

10. The use of electronic monitoring camera system for the toothfish fishery in CCAMLR Subarea 48.3: a study case to help CCAMLR

    fishery around CCAMLR Subarea 48.3 have, to date, been limited to in situ line observations conducted by ... assessment and management of the fishery. This independent estimation of the total catch in the fishery ... was installed on a longliner targeting toothfish in CCAMLR Subarea 48.3. This system provided 100% of ... divided in settings and hauling operations where at-sea observations were matched with video footage ...

    Meeting Document : WG-FSA-14/27 : Auteur(s): R.A. Benedet (United Kingdom)

Pages