Search results
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Observation of fishing operation and distributional behaviour of krill on a krill trawler off Wilkes Land during the 1985/86 season
operation was described in detail. Fish finder was most useful in detecting swarms while sonar was used to ... in different fishing areas. While catch per towing time reflects within-swarm density catch per day ... time and space may have difficulties in standardization when data from different vessels are to be used ...
Meeting Document : SC-CAMLR-VI/BG/35 : Author(s): T. Ichii (Japan)
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Analysis of anomalous CPUE data from data-poor exploratory fisheries
Insung No. 7 while participating in CCAMLR exploratory fisheries. The operational characteristics of ... these ships showed distinct differences to the other ships that have participated in longline toothfish ... fisheries in Divisions 58.4.1, 58.4.2 and subarea 48.6. These differences are reflected in CPUEs with large ...
Meeting Document : WG-FSA-12/07 : Author(s): Secretariat and Delegation of the Republic of Korea
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Draft Krill Fishery Report
summary of information related to the krill fishery in a similar format to the fishery reports that are ... completed for finfish fisheries in WG-FSA (www.ccamlr.org/node/75667). The Secretariat agreed to coordinate ... in content to a finfish Fishery Report. The following compilation of information on the krill fishery ... includes a report on krill fishing in the current season and a list of notifications for next season ...
Meeting Document : WG-EMM-14/58 : Author(s): Secretariat
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Light-mantled sooty albatross on Campbell Island, 1995–96: a pilot investigation
conducted on western Campbell Island in November 1995. An extrapolation from 292 nests counted on 19 km of ... coastline, more than 77 seen on offshore islands, and 32 found in four inland areas, suggests that there ... were at least 1600 nests on the island in 1995-96. Standard vantage points were established for future ... index counts. Sixty nests were monitored, and 50% were still successfully rearing chick in January ...
Meeting Document : SC-CAMLR-XVII/BG/09 : Author(s): Delegation of New Zealand
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Population variability of biological parameters of penguins along the Antarctic Peninsula
parameters and factors affecting penguins biology along the Antarctic Peninsula is presented in order to ... contribute to the general knowledge of penguin biological variation, to generate a data baseline in the ... parameters, higher abundance of ectoparasites and a higher stress in northern populations. Contaminant levels ... and genotoxic damage are associated with human activity mostly located in the northern populations as ...
Meeting Document : WG-EMM-2019/72 : Author(s): A. Barbosa
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Best practice seabird by-catch mitigation for Spanish-rig longline vessels with emphasis on line weighting regimes
Abstract: The Spanish system is used in a range of demersal and semi-pelagic longline fisheries ... autoline vessels, that are effective in reducing the mortality of white-chinned petrels, one of the world’s ... differences in sink rates between traditional Spanish system line weights (netting bags of rocks) and ... elliptically-shaped steel weights. In the vessel charter experiment there was a statistically significant ...
Meeting Document : WG-FSA-06/22 : Author(s): G. Robertson (Australia), C.A. Moreno (Chile), B. Wienecke (Australia), P. Gandini (Argentina), G. McPherson (Australia) and J.-P. Seco Pon (Argentina)
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UPDATE OF THE INTEGRATED STOCK ASSESSMENT FOR THE PATAGONIAN TOOTHFISH (DISSOSTICHUS ELEGINOIDES) FOR THE HEARD AND MCDONALD ISLANDS (DIVISION 58.5.2)
significant loss of information. Pooling the ALKs in this way meant that all commercial catch data could be ... account uncertainty due to haul-level variability in catch-at-length proportions, ALK sampling error and ... predictions of numbers-at-age and proportions-at-age. In other work, this matrix was found to depend on the ... catches and catch-at-age data for additional sub-fisheries (2 longline, 1 trawl) and pot fishing in the ...
Meeting Document : WG-FSA-09/20 : Author(s): S.G. Candy and D.C. Welsford (Australia)
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An ecosystem-based approach to management: using individual behaviour to predict the indirect effects of Antarctic krill fisheries on penguin foraging
Abstract: 1. Changes in species’ abundance and distributions caused by human disturbances can ... have indirect effects on other species in a community. Although ecosystem approaches to management are ... conditions on these interactions. In this study, we extended a behavioural model used previously to ... penguin foraging success and behaviour in adjacent breeding sites. 3. Increased fishing pressure offshore ...
Meeting Document : WG-EMM-03/34 : Author(s): S.H. Alonzo, P.V. Switzer and M. Mangel (USA)
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Short note: time series of Drake Passage Oscillation Index (DPOI) from 1952 to 1988
Abstract: Naganobu et al. (1999) had assessed variability in krill recruitment and density with ... differences across the Drake Passage, sea ice cover and chlorophyll-a in the Antarctic Peninsula area during ... westerlies were especially regarded as a key environmental index. Fluctuations in the westerlies across the ... variability. High DPOI periods, not less than 16 hPa, were mostly observed in the period before 1964 and only ...
Meeting Document : WG-EMM-02/44 : Author(s): M. Naganobu and K. Kutsuwada (Japan)
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PREDICTING SPECIES DISTRIBUTIONS FROM MUSEUM AND HERBARIUM RECORDS USING MULTI-RESPONSE MODELS FITTED WITH MULTIVARIATE ADAPTIVE REGRESSION SPLINES
methods for using these data. Such methods must, in particular, accommodate the difficulties caused by ... models (GAMs) that are commonly and successfully used in modelling species distributions, but has ... particular advantages in its analytical speed and the ease of transfer of analysis results to other ... dominant environmental drivers of variation in species composition. We use data from 226 species from six ...
Meeting Document : WS-VME-09/P02 : Author(s): Elith, J., Leathwick, J.