Résultats de la recherche
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Estimation of natural mortality using catch-at-age and aged mark-recapture data: a multi-cohort simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation.
number of recaptures-at-age and model the population numbersat- age by annual difference equations ... obtained by integrating an ordinary differential equation (ODE) for within-year population dynamics. The ... perturbation by observational error were also carried out for each model in order to investigate the effect on ... so for the BODE model. The reason for this is explained by the confounding of selectivity parameter ... number of recaptures-at-age and model the population numbers- at-age by annual difference equations ... obtained by integrating an ordinary differential equation (ODE) for within-year population dynamics. The ... . Simulations which passed catch-at-age numbers to the estimation algorithm after perturbation by observational ... BODE model. The reason for this is explained by the confounding of selectivity parameter estimates ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 1–27 : Auteur(s): Candy, S.G.
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Estimating the biodiversity of Planning Domain 5 (Marion and Prince Edward Islands – Del Cano – Crozet) for ecoregionalisation
funded by WWF South Africa and known as Del Cano 1. The intention of the CCAMLR workshop was to study the ... are the major scientific actors in this region. Species distributions were visualized by the mean of a ... of bioregions according to frontal zones may be influenced by climate change. This will have ... decreases of albatrosses and petrels have been substantially influenced by by-catch mortality in fisheries ...
Meeting Document : WG-EMM-12/33 Rev. 1 : Auteur(s): P. Koubbi (France), R. Crawford (South Africa), N. Alloncle, N. Ameziane, C. Barbraud, D. Besson, C.-A. Bost, K. Delord, G. Duhamel (France), L. Douglass (Australia), C. Guinet (France), G. Hosie (Australia), P.A. Hulley (South Africa), J. O. Irisson (France), K.M. Kovacs (Norway), R. Leslie, A. Lombard, A. Makhado (South Africa), C. Martinez (France), S. Mormede (New Zealand), F. Penot (France), P. Pistorius (South Africa), P. Pruvost (France), B. Raymond (Australia), E. Reuillard, J. Ringelstein (France), T. Samaai (South Africa), P. Tixier (France), H.M. Verheye (South Africa), S. Vigetta (France), C. von Quillfeldt (Norway) and H. Weimerskirch (France)
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e-cc-xii-a4.pdf
... COMMITTEE ON ADMINISTRATION AND FINANCE (SCAF) The following agenda items were considered by the ... additional A$19 000 in contract labour necessitated by a significant increase in data processing. The ... had since been extended by tacit agreement with the Data Manager pending a review of the tasks and ... abilities required of the position. The results of such a review by the Executive Secretary had been
application/pdf attached to:SCAF-93Meeting Report : SCAF-93
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FLAG STATUS OF SOME VESSELS ON THE NCP-IUU VESSEL LIST
of some of these vessels: (i) Bigaro was sighted by France fishing inside Division 58.5.1 of the ... CCAMLR Convention Area on 8 June. The vessel was identified by France as Togolese flagged and the master ... of the vessel verbally advised that the vessel was operated by 'Americaga Laica' of Lome ... 2010 after calling at Penang, Malaysia. The vessel was reported by Singapore authorities to be flagged ...
Meeting Document : SCIC-10/04 : Auteur(s): Secretariat
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Marine mammals and demersal longlines fishery interactions in Crozet and Kerguelen Exclusive Economic Zones: an assessment of the depredation level
species alone or in association. In Crozet waters, the CPUE was found to be reduced by both killer whales ... (Arctocephalus sp.) interactions with longlines fishing operations were reported by observers onboard of fishing ... . Depredation effect was assessed by comparing CPUEs of the longlines, in absence/presence of any marine mammals ... and sperm whales presence by themselves or associated. An important photo-identification effort mainly ...
Meeting Document : WG-FSA-06/63 : Auteur(s): C. Roche, N. Gasco, G. Duhamel and C. Guinet (France)
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On possibility of using acoustic method to improve quality of Champsocephalus gunnari biomass estimates in Subarea 48.3
acoustic and biological data obtained by Russian RN ATLANTIDA in the area of South Georgia Island (January ... -February 2000). Estimation of possible target strength values was made by a comparison to TS of other fish ... obtained from the catches by midwater trawl to those estimated with TS in situ measurements for fish ... fleet operation, there has been showed availability within the pelagic zone by daytime of Ch.gunnari ...
Meeting Document : WG-FSA-00/31 : Auteur(s): S. Kasatkina (Russia)
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Seabird observations in Subareas 48.1, 48.2 and 88.3 and proposal for a new streamer line design
of the New Fisheries Project developed by Chile in Statistical Subareas 88.3, 48.1 and 48.2. During ... . The streamer line suggested by the CCAMLR was not appropriate during wind conditions, so an alternate ... Diomedea melanophrys, with 204 sightings, followed by Oceanities oceanicus, with 77; Catharacta lonnbergi ... with I1.I birds/haul, followed by Subareas 48.2 and 88.3 with 7.6 and 5.0 birds/haul, respectively. The ...
Meeting Document : WG-FSA-98/19
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The case for a Ross Sea marine reserve
an ideal candidate for a marine reserve, as evidenced by its inclusion in the list of 11 priority ... Ross Sea derives from its relatively pristine state, which will be irrevocably altered by the ... marine protected area (MPA) by CCAMLR. This paper summarizes the scientific basis for comprehensive Ross ... Sea protection. ¹ SC-CAMLR XXVII Final Report, paragraphs 3.53 and 3.60 Author(s): Submitted by ASOC ...
Meeting Document : CCAMLR-XXX/BG/23 : Auteur(s): Submitted by ASOC
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Management of C. gunnari in Subarea 48.3
Abstract: The management of Champsocephalus gunnari at South Georgia is complicated by the ... increased consumption of icefish by Antarctic fur seals in years of poor krill availability. Thus natural ... mortality of icefish may, in some years, increase by a large factor (assumed here to be 4) declining to ... can be used to calculate an appropriate proportion of an estimate of Bo which could be taken by ...
Meeting Document : WG-FSA-97/38 : Auteur(s): Kirkwood, G.P., Parkes, G.B., Everson, I., Agnew, D.J.
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Variation in the diet of the blue-eyed shag Phalacrocorax atriceps throughout the breeding season at Half-Moon Island, South Shetland Islands
cormorant Phalacrocorax atriceps were collected in a colony at Half-moon Island, South Shetland Islands, by ... were the main prey (91% in number) followed by mollusks and polychaetes. Six fish species were ... important in mass (79%), followed by N. nudifrons and T. newnesi. The overall composition of the diet was ... species and non- fish organisms. This may reflect different degrees of energy demand by chicks at ...
Meeting Document : WG-EMM-95/78 : Auteur(s): Barrera-Oro, E., Casaux, R.