Search results
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AGE AND GROWTH OF SPINY ICEFISH, CHAENODRACO WILSONI REGAN, 1914, OFF JOINVILLE-D'URVILLE ISLANDS (ANTARCTIC PENINSULA)
polishing whole otoliths embedded in epoxy resin in moulds. The precision of age estimates between readings ... maturity and a considerable short life span. The fish population of C. wilsoni caught in the studied area ... January 2007. A total of 218 specimens were selected for the study, consisting of 120 females and 98 males ... . The age of fish was estimated by counting annuli on transverse sections obtained by grinding and ...
Meeting Document : WG-FSA-08/33 : Author(s): M. La Mesa, A. De Felice (Italy), C.D. Jones (USA) and K.-H. Kock (Germany)
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Proposed updates to CEMP data e-forms and a review of CEMP Standard Methods
age of this document and that the last review of the manual was completed in 2004, the Secretariat ... proposes a review of the manual intersessionally by the CEMP e-group in order to ensure that it is meeting ... the method descriptions for these parameters in the CEMP Standard Methods manual. However, given the ... Abstract: Updates to the CEMP data submission e-forms for parameters A3 and A8 have been proposed ...
Meeting Document : WG-EMM-18/46 : Author(s): CCAMLR Secretariat
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Towards developing a feedback management procedure for the Antarctic krill fishery
spatial distribution of fishing activity for Antarctic krill in Statistical Area 48. The CEMP currently ... strategy for the krill fishery includes comparison of predator performance in no-fishing areas, these ... fishery and are sensitive to changes in the marine ecosystem (e.g. series that indicate predator abundance ... decision rules can help the Commission respond to changes that are attributable to the impacts of fishing ...
Meeting Document : WG-EMM-12/44 : Author(s): G. Watters and J. Hinke (USA)
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FISHING EQUIPMENT, MARINE DEBRIS AND HYDROCARBON SOILING ASSOCIATED WITH SEABIRDS AT BIRD ISLAND, SOUTH GEORGIA, 2007/2008
2008. It is the fifteenth such annual report. As in previous years, the majority of items (84%) of ... was observed in the total number of items encountered (n=116) compared with the previous season. Two ... were observed, and in both cases the fishing gear was typical of that used in longline fisheries. There ... were no incidences of hydrocarbon soiling of seabirds during the reporting period. Author(s): D. Fox ...
Meeting Document : WG-FSA-08/25 : Author(s): D. Fox (UK)
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Key considerations for planning a large-scale krill survey
) might also play a role in the future management of the krill fishery. Such surveys provide an indication ... important in the future management of the krill fishery. The design of the CCAMLR 2000 survey might be a ... Abstract: Article II of the Convention requires the Commission to maintain harvested populations ... management (FBM) approaches for the krill stock in subareas 48.1 to 48.4. These approaches include some which ...
Meeting Document : WG-EMM-15/27 : Author(s): S. Hill, J. Watkins (United Kingdom), O.R. Godø (Norway), S. Kawaguchi (Australia), D. Kinzey, C. Reiss (USA), V. Siegel (Germany), P. Trathan (United Kingdom) and G. Watters (USA)
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Adult male Antarctic fur seals: tourists, trouble makers or marine ecosystem sentinels?
considered in understanding the functional response of penguins and suggest that male AFS could be a useful ... through the partitioning of resource exploitation either temporally or spatially. Understanding the ... concern that any increase in catch levels should not result in long-lasting or irreparable damage to the ... , characterizing the competitive interactions between these species is key to disentangling the drivers of ...
Meeting Document : WG-EMM-2019/49 : Author(s): A. Lowther, C. Lydersen and K. Kovacs
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CEMP INDICES: 2011 UPDATE
indicator species collected by standard methods in the three Integrated Study Regions of the Convention Area ... total of 116 anomalous values (anomalies, see Appendix 1) have been observed in the times series of ... . Each year the Secretariat updates the standardised index values and provides a summary of trends and ... biological indices. All anomalies (both high and low) in the past 2 seasons have been from monitoring sites ...
Meeting Document : WG-EMM-11/06 : Author(s): Secretariat
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Effect of orientation on broadband acoustic scattering of Antarctic krill Euphausia superba: implications for inverting zooplankton spectral acoustic signatures for angle of orientation
the acoustic returns for angle of orientation by applying a newly developed Co variance Mean Variance ... the acoustic returns for angle of orientation by applying a newly developed Co variance Mean Variance ...
Meeting Document : WG-EMM-99/41 : Author(s): L.V. Martin Traykovski (USA), R.L. O’Driscoll (New Zealand) and D.E. McGehee (USA)
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Modelling krill recruitment
Abstract: A method is developed for using observed values of the mean proportion of recruits ... A method is developed for using observed values of the mean proportion of recruits and its variance ...
Meeting Document : WG-KRILL-93/13 : Author(s): W. de la Mare (Australia)
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Using ecosystem monitoring data to detect impacts
or explicit focus of conservation objectives for animal populations. Furthermore, the state of indicator ... strategies that use uncontrolled perform- ance data to meet conservation objectives remains a significant ... of the harvested species. There is, therefore, a need to define operational conservation objectives ... information about the state of the monitored populations and, therefore, whether conservation objectives ... an observed value in an unimpacted system, or (ii) the frequency of values below a fixed reference ... purpose of ecosystem monitoring programs is to indicate the state of ecosystems and whether they have been ... using monitoring data with no control sites. These methods assess either (i) the expected probability of ... point. The second approach allows inference criteria based on changes in this frequency rather than by ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 197–212 : Author(s): Hill, S.L., J. Forcada, P.N. Trathan and C.M. Waluda