Résultats de la recherche
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An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort
Paper Title: An alternative method for estimating the level of illegal fishing using simulated ... effort is put forward. The results from 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 ... performs better in the case of zero detections and can potentially better handle the evasion of detection ... Alternative method for estimating the level of illegal fi shing Introduction This paper considers methods ... modelling framework of this paper, particularly with regard to the behaviour of vessels when detected ... this paper, the only type of observation con- sidered here is that reported by a fi shery patrol ... ’ problem. This problem is also described and examined. The discussion section of the paper suggests ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 143–161 : Auteur(s): Ball, I
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Detection and quantitative estimation of krill concentrations by hydroacoustic instruments
Paper Title: Detection and quantitative estimation of krill concentrations by hydroacoustic ... instruments Abstract / Description: The limited capabilities of existing hydroacoustic instruments in ... detecting dispersed and surface concentrations of krill lead to considerable underestimates of krill biomass ... in areas surveyed. The task of detecting surface concentrations of krill can be solved with the help ... ESTIMATION OF KRILL CONCENTRATIONS BY HYDROACOUSTIC INSTRUMENTS K.I. Yudanov (U.S.S.R.) Abstract The ... limited capabilities of existing hydroacoustic instruments in detecting dispersed and surface ... concentrations of krill lead to considerable underestimates of krill biomass in areas surveyed. The task of ... detecting surface concentrations of krill can be solved with the help of towed acoustic antennae. The ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 123-139 : Auteur(s): Yudanov, K.I.
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Improving estimates of Adélie penguin breeding population size: developing factors to adjust one-off population counts for availability bias
Paper Title: Improving estimates of Adélie penguin breeding population size: developing factors ... presented for the collection and development of data to adjust counts of Adélie penguins made at any time in ... the breeding season to an estimate of the breeding population. The development of ‘availability ... adjustment factors’ involves the collection of time-series counts of population objects, such as adults ... compan- ion paper (McKinlay et al., 2010). material and methods Relevant aspects of Adélie penguin ... ImprovIng estImates of adélIe penguIn breedIng populatIon sIze: developIng factors to adjust one-off ... Australian Antarctic Division Department of Environment, Water, Heritage and the Arts 203 Channel Highway ... methods are presented for the collection and development of data to adjust counts of Adélie penguins made ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 229–241 : Auteur(s): Southwell, C., J. McKinlay, L. Emmerson, R. Trebilco and K. Newbery
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Determination of Antarctic krill acoustic back-scattering cross-section
Paper Title: Determination of Antarctic krill acoustic back-scattering cross-section Abstract ... / Description: When determining the density krill of concentrations it is necessary to know the acoustic cross ... -section of back-scattering of krill. The target strength can be determined in situ by measuring the echo ... signal from one specimen resolved by the hydroacoustic instrument. By calculating the mean level of the ... - 141 - SC-CAMLR-V/BG/27 DETERMINATION OF ANTARCTIC ... When determining the density krill of concentrations it is necessary to know the acoustic cross ... -section of back-scattering of krill. The target strength can be determined in situ by measuring the echo ... signal from one specimen resolved by the hydroacoustic instrument. By calculating the mean level of the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 141-152 : Auteur(s): Protaschuk, V.A. and T.A. Lukashova
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Movement, growth and available abundance to the fishery of Dissostichus eleginoides Smitt, 1898 at Heard Island, derived from tagging experiments
Paper Title: Movement, growth and available abundance to the fishery of Dissostichus eleginoides ... the Kerguelen Plateau has not been investigated. This paper examines the assumptions of stock ... Smitt, 1898 at Heard Island, derived from tagging experiments Abstract / Description: tocks of ... Patagonian toothfish (Dissostichus eleginoides) in different sectors of the Southern Ocean are considered to ... investigated. This paper examines the assumptions of stock separation using tagged fi sh from the fi shery ... vary within and between seasons. In this paper the combined function of gear selectivity and ... , Vol. 9 (2002): 33–48 33 MOVEMENT, GROWTH AND AVAILABLE ABUNDANCE TO THE FISHERY OF DISSOSTICHUS ... . Lamb Australian Antarctic Division Abstract Stocks of Patagonian toothfi sh (Dissostichus eleginoides ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 33–48 : Auteur(s): Williams, R., G.N. Tuck, A.J. Constable and T. Lamb
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Fatty acid and stable isotope analyses to infer diet of Antarctic toothfish caught in the southern Ross Sea
Paper Title: Fatty acid and stable isotope analyses to infer diet of Antarctic toothfish caught ... compared to lipid profiles of fish and invertebrate species taken as by-catch in the fishery or collected ... from the stomachs of toothfish. Stable carbon and nitrogen isotope ratios were also determined to ... further identify feeding relationships between these species. The aim of this study was to establish the ... analysis is not presented in this paper. Only the fleshy tissue of animals was prepared for FA and ... Science, Vol. 20 (2013): 21–36 21 FATTY ACID AND STABLE ISOTOPE ANALYSES TO INFER DIET OF ANTARCTIC ... -705 Republic of Korea S.M. Hanchet National Institute of Water and Atmospheric Research (NIWA) Ltd ... Fisheries Research and Development Institute 408-1, Sirang-ri, Gijang-eup, Busan 619-705 Republic of ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 21–36 : Auteur(s): Jo, H.-S., I. Yeon, C. Lim, S.M. Hanchet, D.-W. Lee and C.-K. Kang
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Analysis of albatross and petrel distribution within the CCAMLR Convention Area: results from the Global Procellariiform Tracking Database
Paper Title: Analysis of albatross and petrel distribution within the CCAMLR Convention Area ... , unreported and unregulated (IUU) fishing. This paper presents an analysis of the distribution of albatrosses ... successful measures to reduce the incidental mortality of seabirds in most of the fisheries within its ... jurisdiction, and has done so through area-specific risk assessments linked to mandatory use of measures to ... ) fishing. This paper presents an analysis of the distribution of albatrosses and petrels in the CCAMLR ... International, 2004b). The contributors of the data used in the analyses for this paper are listed in the ... Convention Area. This paper is the product of such an analysis, with the benefit of new data that have been ... distribution of adults during the non-breeding period. For this reason, this paper restricts itself ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 143–174 : Auteur(s): BirdLife International (prepared by C. Small and F. Taylor)
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Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes, Macrouridae) in the Ross Sea region
Paper Title: Distribution, morphology and ecology of Macrourus whitsoni and M. caml (Gadiformes ... identification of a new species of Southern Ocean grenadier, Macrourus caml, which had hitherto been identified ... as M. whitsoni. The first comparison of the distribution and ecology of the two species of Macrourus ... in the Ross Sea region is presented. The number of rays in the left pelvic fin and number of rows of ... stomachs, its wet mass recorded to the nearest 0.01 g after removal of surface water by blotting paper. A ... Fishing for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea region of the Southern Ocean ... minimise the effect of fishing on associated species and the overall ecosystem. Grenadiers (Gadiformes ... of 10 tonnes reported in 1998 which increased to 480 tonnes in 2005 (Hanchet et al., 2008a ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 37–61 : Auteur(s): Pinkerton, M.H., P. McMillan, J. Forman, P. Marriott, P. Horn, S. Bury and J. Brown
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The utilization of seabird censuses for krill monitoring
Paper Title: The utilization of seabird censuses for krill monitoring Abstract / Description ... : The possibility of using bird observations made at sea as a means of monitoring krill in the Antarctic ... Ocean is explored. No variation source directly linked with krill was identified by means of ... correspondence analysis. Contour plotting, profile analysis and tests for equality of covariance matrices proved ... present paper is the result of exploring the possibility of using bird observations made at sea, for the ... analysis of other factors not included in the present paper because of the insufficient number of ... - 393 - THE UTILIZATION OF SEABIRD CENSUSES FOR KRILL ... possibility of using bird observations made at sea as a means of monitoring krill in the Antarctic ocean is ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 393-425 : Auteur(s): Marschoff, E.R., J.G. Visbeek and L.R. Fontana
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Patterns and processes in the distribution and dynamics of Antarctic krill
Paper Title: Patterns and processes in the distribution and dynamics of Antarctic krill Abstract ... / Description: A general framework is presented to develop, test and integrate component models of the ... distribution and dynamics of Antarctic krill population at various spatial and temporal scales. We suggest that ... models of increasing complexity be developed iteratively for variability and patchiness of krill ... Kohkichi KAWASAKI. 1988. Acoustic data analysis and models of krill spatial distribution. Background paper ... DISTRIBUTION AND DYNAMICS OF ANTARCTIC KRILL S.A. Levin, A. Morin and T.M. Powell Abstract A general ... framework is presented to develop, test and integrate component models of the distribution and dynamics of ... Antarctic krill population at various spatial and temporal scales. We suggest that models of increasing ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 281–299 : Auteur(s): Levin, S.A., A. Morin and T.M. Powell