Résultats de la recherche
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A model at the level of the foraging trip for the indirect effects of krill (Euphausia superba) fisheries on krill predators
Abstract: We present a model at the level of the foraging trip for the effects of a fishery on ... model at the level of the foraging trip for the indirect effects of krill (Euphausia superba) fisheries ... . The model involves: (i) the description of the biomass and spatial distribution of krill; (ii) the ... effects of the fishery on the krill; (iii) the description of penguin breeding; and (iv) the indirect ...
Meeting Document : WG-EMM-98/48 : Auteur(s): M. Mangel and P.V. Switzer (USA)
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A model at the level of the foraging trip for the indirect effects of krill (Euphausia superba) fisheries on krill predators
population level effects. Here, we present for. the first time a model at the level of the foraging trip for ... . Author(s): Switzer, P.V., Mangel, M. Title: A model at the level of the foraging trip for the indirect ... Abstract: 1. Although the development of fisheries for krill in the southern oceans has prompted ... considerable work on the indirect effects of fisheries on krill predators, to date all work has focused on ...
Meeting Document : WG-EMM-96/20 : Auteur(s): Switzer, P.V., Mangel, M.
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Estimating the biodiversity of the shelf and oceanic zone of the d’Urville Sea (East Antarctica) for ecoregionalisation using the CEAMARC (Collaborative East Antarctic Marine Census) CAML surveys
studied by a number of countries in the CEAMARC surveys (Collaborative East Antarctic Marine Census) as ... of the East Antarctic sector showed 5 predominant cluster types over the shelf and two offshore in ... Abstract: A proposal for a representative system of MPAs (RSMPA) for eastern Antarctica (CCAMLR ... Divisions 58.4.1 and 58.4.2) has been developed to satisfy overall the principles of comprehensiveness ...
Meeting Document : WS-MPA-11/07 : Auteur(s): P. Koubbi (France), G. Hosie, A. Constable, B. Raymond (Australia), M. Moteki (Japan), N. Améziane, R. Causse (France), V. Fuentes (Spain), K. Heerah, F. Penot, D. Vincent, A. Ancel, C.A. Bost, M. Eléaume (France), D. Lindsay (Japan), M. Lindsay (Australi
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An examination of variance and sample size for female Antarctic fur seal trip durations
sample size in detecting differences between two years of fur seal trip duration data. Female foraging ... examination of variance and sample size for female Antarctic fur seal trip durations Approval: Approved ... Abstract: This paper uses power analysis and bootstrap functions to examine the importance of ... trip duration for the first six trips to sea for 1997/98 (n = 30) and 1998/99 (n = 31) at Cape Shirreff ...
Meeting Document : WG-EMM-99/45 : Auteur(s): M.E. Goebel (USA)
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Estimates of the tag loss rates for single and double tagged toothfish (Dissostichus mawsoni) fishery in the Ross Sea
; declining to 94.6% after six years; and to 88.4% after ten years. Comparison of the different loss rate ... plausible that there could be a catastrophic failure of tags or some other systematic change in the tag loss ... periods of up to six years at liberty. The loss rate for double tags had been incorrectly derived and ... applied in the assessment models of Dunn & Hanchet (2009a, 2009b), with the loss rates slightly over ...
Meeting Document : WG-SAM-11/18 : Auteur(s): A. Dunn, M.H. Smith (New Zealand), D.J. Agnew (UK) and S. Mormede (New Zealand)
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Estimation of tag-loss rates for tagged fish in the Patagonian toothfish (Dissostichus eleginoides) fisheries at Heard Island and McDonald Islands in Division 58.5.2
fish. With an initial tag-loss proportion of 2.8% and ongoing tag-loss rate of 0.056 in the longline ... . The parameter of annual tag-loss rate in CASAL’s single-tag model was approximated, for a maximum time ... . Author(s): P. Ziegler Title: Estimation of tag-loss rates for tagged fish in the Patagonian toothfish ... fishery, 99.3% of all double-tagged fish retain at least one tag after one year, and 80.2% after ten years ...
Meeting Document : WG-FSA-17/21 : Auteur(s): P. Ziegler
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Analysis of gear loss by fishing vessels in the CCAMLR Convention Area as contribution to the marine debris program
vessels be included in annual updates on marine debris. Rates of hook loss in longline fisheries revealed ... there was a higher proportion of gear loss in areas where interactions with sea-ice are more likely. To ... improve collection of data on gear loss it is recommended that the C1 data form be modified to include ... data on gear loss and for the C2 form to have a clearer definition of ‘hooks lost attached to sections ...
Meeting Document : WG-FSA-18/17 : Auteur(s): CCAMLR Secretariat
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Reduced bait loss and bycatch of seabirds in longlining by using a seabird scarer
during setting of the gear might cause considerable bait loss and occasional hooking of birds might ... . Bjordal (Norway) Title: Reduced bait loss and bycatch of seabirds in longlining by using a seabird scarer ... Abstract: Although longlining is regarded as a highly conservation oriented method of fishing ... , bycatch of seabirds on longlines is a problem in certain seasons and areas. Birds feeding on the bait ...
Meeting Document : WG-IMALF-94/09 : Auteur(s): S. Løkkeborg and Å. Bjordal (Norway)
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A versatile approach to minimise damage or loss of longline gear due to sea-ice
Abstract: At SAM 2019, there were again reports on damage and/or loss of longline gear, most ... FSA to: (1) to (re-)discuss the issue of damage or loss of longline gear due to sea ice, including the ... (s): S. Hain, T. Brey and K. Teschke Title: A versatile approach to minimise damage or loss of ... quickly varying sea ice cover, there is an increased risk that any parts of longline gear floating on the ...
Meeting Document : WG-FSA-2019/04 : Auteur(s): S. Hain, T. Brey and K. Teschke
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Loss of scientific gear: report by the United Kingdom
Author(s): Delegation of UK Title: Loss of scientific gear: report by the United Kingdom ...
Meeting Document : CCAMLR-VI/BG/09 : Auteur(s): Delegation of UK