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Status of the FIBEX acoustic data from the West Atlantic
Paper Title: Status of the FIBEX acoustic data from the West Atlantic Abstract / Description ... : Data from the FIBEX acoustic survey in the West Atlantic sector have been re-examined to check the ... Herwig. While there is an error factor due to the combination of data collected at 50 kHz (Walther Herwig ... survey) with data collected at 120 kHz (all other vessels), it is concluded that this does not materially ... ACOUSTIC DATA FROM THE WEST ATLANTIC P.N. Trathan and I. Everson British Antarctic Survey High Cross ... , Madingley Road Cambridge CB3 OET, United Kingdom Abstract Data from the FIBEX acoustic survey in the ... factor due to the combination of data collected at 50 kHz (Walther Herwig survey) with data collected ... biomass. The data from the Professor Siedlecki survey do not provide estimates that are consistent with ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 35–48 : Автор(ы): Trathan, P.N. and I. Everson
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Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone
-lived species such as toothfish cannot be inferred from length-frequency data alone Abstract ... about using unstandardised catch rate data have led to a desire to draw inferences about stock status ... and fishing mortality from length-frequency data alone. In this paper, a number of length-based stock ... eleginoides) are illustrated. While length-frequency data can be useful in assessments when integrated with ... notification of intention to fish, measures requiring data collection, and decision rules for setting pre ... - cautionary catch limits. The intent of the data col- lection is to provide sufficient data from research and ... data collection plan, and a tagging program specify the collection of four main data types: spatially ... referenced catch and effort data, catch length-frequency data, tag-recapture data, and otoliths or scales ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Автор(ы): Ziegler, P.E., D.C. Welsford and A.J. Constable
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A review of data on abundance, trends in abundance, habitat use and diet of ice-breeding seals in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)
Paper Title: A review of data on abundance, trends in abundance, habitat use and diet of ice ... . Collating data from disparate sources, and understanding biases or uncertainties inherent in those data, are ... ; leopard seal, Hydrurga leptonyx; and Weddell seal, Leptonychotes weddellii). Data on populations ... features) and foraging (diet) are summarised, and potential biases and uncertainties inherent in those data ... Science, Vol. 19 (2012): 49–74 49 A REVIEW OF DATA ON ABUNDANCE, TRENDS IN ABUNDANCE, HABITAT USE AND ... of understanding and managing impacts such as exploitation and climate change. Collating data from ... disparate sources, and understanding biases or uncertainties inherent in those data, are important first ... , Hydrurga leptonyx; and Weddell seal, Leptonychotes weddellii). Data on populations (abundance and trends ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 49–74 : Автор(ы): Southwell, C., J. Bengtson, M. Bester, A.S. Blix, H. Bornemann, P. Boveng and M. Cameron, J. Forcada, J. Laake, E. Nordøy, J. Plötz, T. Rogers, D. Southwell, D. Steinhage, B.S. Stewart and P. Trathan
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Catch per unit effort and proportional recruitment indices from Japanese krill fishery data in Subarea 48.1
fishery data in Subarea 48.1 Abstract / Description: Proportional recruitment indices and CPUE in Subarea ... 48.1 (Antarctic Peninsula region) from 1980 to 1996 were calculated based on logbook data from Japanese ... commercial krill trawlers. Proportional recruitment rates calculated from fisheries data were similar to ... those from scientific data (Siegel et al., 1997) and showed a close relationship to sea-ice indices ... EFFORT AND PROPORTIONAL RECRUITMENT INDICES FROM JAPANESE KRILL FISHERY DATA IN SUBAREA 48.1 S ... (Antarctic Peninsula region) from 1980 to 1996 were calculated based on logbook data from Japanese ... commercial krill trawlers. Proportional recruitment rates calculated from fisheries data were similar to ... those from scientific data (Siegel et al., 1997) and showed a close relationship to sea-ice indices ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 47–63 : Автор(ы): Kawaguchi, S., T. Ichii and M. Naganobu
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Acoustic data analysis and models of krill spatial distribution
Paper Title: Acoustic data analysis and models of krill spatial distribution Abstract ... / Description: Acoustic data obtained on 4-5 January 1987 aboard the R/V Professor Siedlecki were used in three ... two distributions may correspond to the between and within patch biomass. These results of data ... resolution of our data analyzed, and the real spatial distribution of krill should be the manifestation of ... SC-CAM LR-VII/BG/25 ACOUSTIC DATA ANALYSIS AND MODELS ... OF KRILL SPATIAL DISTRIBUTION A. Morin, A. Okubo and K. Kawasaki Abstract Acoustic data ... two distributions may correspond to the between and within patch biomass. These results of data ... resolution of our data analyzed, and the real spatial distribution of krill should be the manifestation of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 311–329 : Автор(ы): Morin, A., A. Okubo and K. Kawasaki
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An assessment of the exploratory fishery for Dissostichus spp. on BANZARE Bank (CCAMLR Division 58.4.3b) based on fine-scale catch and effort data
(CCAMLR Division 58.4.3b) based on fine-scale catch and effort data Abstract / Description: In 2006, the ... fine-scale catch and effort data held by CCAMLR for BANZARE Bank, as well as descriptive analyses of ... biological data submitted by scientific observers on board vessels in the fishery. Results of a Leslie ... depletion analysis of stratified catch and effort data indicate that there is strong evidence for depletion ... on fine-sCAle CAtCh AnD effort DAtA J.P. McKinlay, D.C. Welsford, A.J. Constable and G.B. Nowara ... of fine-scale catch and effort data held by CCAMLR for BANZARE Bank, as well as descriptive analyses ... of biological data submitted by scientific observers on board vessels in the fishery. Results of a ... Leslie depletion analysis of stratified catch and effort data indicate that there is strong evidence ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 55–78 : Автор(ы): McKinlay, J.P., D.C. Welsford, A.J. Constable and G.B. Nowara
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Analysis and modelling of the Soviet Southern Ocean krill fleet, II: Estimating the number of concentrations and analytical justification for search data
number of concentrations and analytical justification for search data Abstract / Description: In this ... paper, I show how data that are routinely collected by survey vessels can be used to estimate the number ... . Sample computations are performed, using data collected by Soviet research/survey vessels in the early ... SEARCH DATA M. Mangel Abstract In this paper, I show how data that are routinely collected by ... , 1988) in a given region of the Southern Ocean. Sample computations are performed, using data ... fishery based data if the data are properly chosen. The distributional model used in those reports was ... supported by the analysis of field data (Levin et al., 1989); the notation used in the models will be ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 283–322 : Автор(ы): Mangel, M.
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Analysis of variability of krill size and fish by-catch in the Japanese krill fishery based on scientific observer data
fishery based on scientific observer data Abstract / Description: To estimate the optimal relative sample ... size of scientific observer data collected on Antarctic krill commercial fishing vessels, the ... the coefficient of variation (CV), although haul sample size affects CV for only krill length data up ... to 10% haul coverage. These results suggest that data collection by scientific observers on board ... contribute to ecosystem monitoring in this area. Although broad-scale survey data obtained from fishing ... other factors (e.g. climate change), the data derived from fishing vessels are liable to have lower ... statistical precision than the data collected by research vessels. This is primarily because the data ... . That is, the data obtained from commercial fishing operation cannot provide an even coverage across ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 31–47 : Автор(ы): Okuda, T. and M. Kiyota
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Some comments on the procedure for testing estimators of krill abundance which utilise survey data
utilise survey data Abstract / Description: Since krill distributional data do show evidence of spatial ... techniques) may provide improved abundance estimates from survey data. However, computer simulation studies ... exponential: (3) Though this is the same form as fitted by Miller and Hampton (1989a) to these data, the ... TESTING ESTIMATORS OF KRILL ABUNDANCE WHICH UTILISE SURVEY DATA D.S. Butterworth*, D.L. Borchers* and ... D.G.M. Miller** * ** Abstract Since krill distributional data do show evidence of spatial ... techniques) ~ provide improved abundance estimates from survey data. However, computer simulation studies ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 191–205 : Автор(ы): Butterworth, D.S., D.L. Borchers and D.G.M. Miller
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Preliminary analyses of data collected during experimental phases of the 1994/95 and 1995/96 Antarctic crab fishing seasons
Paper Title: Preliminary analyses of data collected during experimental phases of the 1994/95 and ... 1995/96 Antarctic crab fishing seasons Abstract / Description: Data collected on board the FV American ... data from the Phase 2 depletion experiments did not have significant negative slopes. The insignificant ... their release sites. Density estimates from the mark-recapture data were in the order of 50 000 to 100 ... PRELIMINARY ANALYSES OF DATA COLLECTED DURING EXPERIMENTAL PHASES OF THE 1994195 AND 1995196 ANTARCTIC CRAB ... Jolla Shores Drive La Jolla, Ca. 92037, USA Abstract Data collected on board the FV American ... catch data from the Phase 2 depletion experiments did not have significant negative slopes. The ... movement of crabs away from their release sites. Density estimates from the mark-recapture data were in ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 141–159 : Автор(ы): Watters, G
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