Resultados de la búsqueda
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A risk management framework for avoiding significant adverse impacts of bottom fishing gear on Vulnerable Marine Ecosystems
. This paper provides definitions of VMEs and summaries of their characteristics including natural agents ... adverse impacts of bottom fishing gear on Vulnerable Marine Ecosystems (VMEs) are avoided. Due to the high ... levels of uncertainty surrounding both the evidence of VME presence and the consequences of interaction ... with different types of gear, a risk management framework is proposed, similar to that which has been ...
Meeting Document : WG-EMM-08/37 : Autor(es): K. Martin-Smith (Australia)
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SEASONAL ESTIMATION OF ABUNDANCE BY BOOTSTRAPPING INEXACT RESEARCH DATA (SEABIRD): A METHOD FOR ASSESSING ABUNDANCE AND UNCERTAINTY FROM HISTORICAL COUNT DATA USING ADELIE PENGUINS AS A CASE STUDY
Abstract: In addition to a review of published studies on Adelie penguin abundance at breeding ... of that kind. The present study attempts to implement this estimator in the form of a parametric ... bootstrap model, utilising as input data published counts of Adelie penguins and estimates of their ... uncertainty at breeding sites in Antarctica. To achieve this task, a menu-driven suite of routines titled ...
Meeting Document : WG-EMM-PSW-08/11 : Autor(es): J.P. McKinlay and C.J. Southwell (Australia)
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Diet and feeding ecology of the diving petrels Pelecanoides georgicus and P. urinatrix at South Georgia
Abstract: The diet of the diving petrels Pelecanoides georgicus and P. urinatrix was studied ... Bird Island, South Georgia. The diet of both species was dominated by crustaceans. in particular ... euphausiids (mainly Euphausia superba and some ThysCll1oessa), which contributed 47-76% of the biomass of ... crustaceans in the diet of P. georgicus. and copepods, which contributed 71 % of the biomass of crustaceans in ...
Meeting Document : WG-EMM-97/10 : Autor(es): Croxall, J.P., Prince, P.A., Hill, H.J., Edwards, T.M., Reid, K.
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Entanglement in man-made debris of Antarctic fur seals at Bird Island, South Georgia
Abstract: The incidence of entanglement in man-made debris by Antarctic fur seals (Arctocephalus ... gazella) at Bird Island, South Georgia, was monitored throughout the austral winter and summer of 1990/91 ... as part of an ongoing study by the British Antarctic Survey. A minimum of 8 seals were sighted ... entangled, 7 (88%) of which had their neck collars removed, during the winter months (April – October ...
Meeting Document : CCAMLR-X/BG/05 : Autor(es): Delegation of UK
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Estimating the biodiversity of Planning Domain 5 (Marion and Prince Edward Islands – Del Cano – Crozet) for ecoregionalisation
18th May, 2012 at the headquarters of TAAF (French Southern and Antarctic Territories). It followed a ... meeting on the northern part of Planning Domain 5, which was held in South Africa in 2008, organized and ... funded by WWF South Africa and known as Del Cano 1. The intention of the CCAMLR workshop was to study the ... ecological values and the use of the marine environment and to identify possible threats that might occur in ...
Meeting Document : WG-EMM-12/33 Rev. 1 : Autor(es): 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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On acceptable scattering of longlines geo-referencing in the toothfish fishery in the CAMLR Convention Area
Abstract: The issues of longlines geo-referencing during the exploratory fisheries of the ... toothfish in the Convention Area are discussed. Cases of differences in the coordinates of settings and ... haulings are considered. The estimation of the maximum possible variation of the coordinates in the depths ... range of 550-3000 m was performed. It is shown that the differences of coordinates of settings and ...
Meeting Document : WG-SAM-2019/22 : Autor(es): O. Krasnoborodko
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An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort
this new method are similar to those of the Agnew and Kirkwood (2005) method, and this suggests that ... the current method is adequate under circumstances of low evasion and when good knowledge exists that ... zero observations reflect zero illegal fishing. The new method performs better in the case of zero ... detections and can potentially better handle the evasion of detection by illegal activity. Both the new and ...
Meeting Document : WG-FSA-05/P7 : Autor(es): Ball, I.
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Food consumption estimates of southern elephant seal females during their post-breeding aquatic phase at South Shetland Islands
, King George Island (25 de Mayo). During lactation females spent a mean of 6021±1365 Mj, which resulted ... in a loss of 35% of the initial mass, comprising 63% of initial body fat and 20% of initial body ... to recover an average of 55% of the mass, including 46% of the fat, 71% of the protein and 47% of the ... gained while at sea. However, protein loss expressed in absolute terms or as a proportion of that present ...
Meeting Document : WG-EMM-04/33 : Autor(es): A.R. Carlini, G.A. Daneri, M.E.I. Márquez (Argentina), H. Bornemann (Germany), H. Panarello, R. Casaux (Argentina), S. Ramdohr and J. Plötz (Germany)
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An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort
is adequate under circumstances of low evasion and for when good knowledge exists that zero ... observations reflects zero illegal fishing. The new method performs better in the case of zero detections and ... can potentially better handle the evasion of detection by illegal activity. Both the new and the ... current method suffer from the type of observations method used, which directly affects the system. This ...
Meeting Document : WG-FSA-04/63 : Autor(es): I. Ball (Australia)
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Preliminary assessment of Dissostichus eleginoides on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003
Abstract: A preliminary assessment of yield of Patagonian Toothfish, Dissostichus eleginoides ... result of a randomly stratified trawl survey completed between 16 April and 10 May 2003. The 2003 ... estimate of abundance of recruits indicates a continuation of a period relatively low recruitment since ... preliminary estimate of sustainable long-term yield assessed using the standard method. The preliminary ...
Meeting Document : WG-FSA-03/33 : Autor(es): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)