Résultats de la recherche
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CCAMLR TAGGING PROGRAM
proportion of the tags that can now be linked to tagging events in exploratory fisheries (Table 1). The ... rate for tags recovered in established fisheries is also variable due to the partial inclusion in the ...
Meeting Document : WG-SAM-09/04 : Auteur(s): Secretariat
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Developing a strategy for coordinated research leading to achievement of the CCAMLR objectives for Antarctic toothfish (D. mawsoni) in Area 48
milestones, would allow the Scientific Committee to evaluate where gaps were not being addressed, evaluate ... success or failure, and also enable Scientific Committee to inform Commission as to progress towards ...
Meeting Document : WG-FSA-17/54 : Auteur(s): C. Darby and M. Söffker
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Design of the Italian acoustic survey in the Ross Sea for the Austral summer 2003/04
-2004. The research consists of three core activities: (1) Acoustic sampling on krill (E. superba and E ... . crystallorophias) populations and concurrent censuses of their top predators for estimating krill distribution and ... abundance, and the effects of predators on altering them; (2) Net sampling for describing krill demography ... masses which influence krill ecological behaviour. All these activities will be undertaken synoptically ...
Meeting Document : WG-EMM-02/31 : Auteur(s): M. Azzali, A. Sala and S. Manoukian (Italy)
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Acoustic visualization of the three-dimensional prey field of foraging chinstrap penguins
Antarctic krill, a keystone prey species in the Southern Ocean food web. It has been difficult to evaluate ... these concerns because of problems associated with determining the availability of krill to their ... natural predators. Here, we report a novel method for assessing prey availability to an important krill ... -dimensional distribution of krill within a 1852 X 1852 X 100 m volume of ocean. Our study revealed the ...
Meeting Document : WG-Joint-94/12 : Auteur(s): J.E. Zamon, C.H. Greene, E. Meir, D.A. Demer, R.P. Hewitt and S. Sexton (USA)
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A preliminary assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea based on data from predators
the Scotia Sea based on data from predators Abstract / Description: Cephalopod fisheries world-wide ... mainly target species from two families, Loliginidae and Ommastrephidae. Fisheries for the latter have ... . Rodhouse** Abstract Cephalopod fisheries world-wide mainly target species from two families ... , Loliginidae and Ommastrephidae. Fisheries for the latter have been characterized by dramatically fluctuating ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 479–480 : Auteur(s): Rodhouse, P.G.
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Information on incidental mortality of seabirds and other protected species in the US West Coast pelagic longline fishery
fisheries, one does exist for a US-based pelagic longline fishery for tuna and swordfish. These vessels are ... standing request from CCAMLR for information on incidental seabird mortality in fisheries adjacent to the ...
Meeting Document : WG-FSA-03/39 : Auteur(s): D. Petersen, L. Enriquez and S. Fougner (USA)
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Summary of toothfish tagging suitability data from paired Spanish line – trotline sets
only tag fish with a high probability of survival. Further it recommends that fish hooked only in the ... mouth should be tagged. A new data collection form was implemented in 2012 to allow evaluation of fish ... were only available for trotline and experimental Spanish line- trotline gear. Fish suitability for ... tagging was most related to species, soak time, and fish size. For both gear types, an adequate number of ...
Meeting Document : WG-FSA-12/49 : Auteur(s): S. Parker and D. Fu (New Zealand)
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Using spatial population models to investigate the effects of a proposed Marine Protected Area on Antarctic toothfish in the Ross Sea region
of that fishery’s displacement on the target fish population. We used a spatially explicit population ... alternative MPA scenarios. In particular they can assist in quantifying potential effects on the fish ... specific ecosystem functions through spatial closures to extractive practices such as fisheries. Although ... they usually involve the displacement of fisheries, their design rarely takes into account the effect ...
Meeting Document : WG-FSA-15/42 : Auteur(s): S. Mormede, A. Dunn, S.J. Parker and S.M. Hanchet (New Zealand)
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Report of the Workshop for the International Coordinated Survey in conjunction with CCAMLR-2000 Survey
krill density; near the east end of Elephant Island, mid-way between Elephant and King George Islands ... krill move closer to the shelf break as the season progresses. This apparent movement is complemented by ... a change in the demographic structure of the population. The smaller size modes disappear and krill ... measurement errors, then the consistency between the four other surveys suggests low variability in krill ...
Meeting Document : WG-EMM-01/68 : Auteur(s): Delegations of Japan, Rep. of Korea, USA and Peru
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MULTIPLE INDICATORS SUGGEST A STRONG ECOSYSTEM ANOMALY AT SOUTH GEORGIA IN 2009
metrics for birds, seals and fish seems to be connected with the availability of Antarctic krill ... , surveys of krill and mackerel icefish, and monitoring of land-based predators. Each of these data sources ... warm water inflow were followed by reduced icefish catches, a paucity of krill in icefish and penguin ... diets and low krill biomass in the regularly surveyed “Western Core Box”. Consequently many of the ...
Meeting Document : WG-EMM-09/23 : Auteur(s): S. Hill, M. Belchier, M. Collins, S. Fielding, E. Murphy, P. Trathan, H. Venables and C. Waluda (United Kingdom)