Resultados de la búsqueda
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Semi-empirical acoustic estimates of krill biomass derived from simulated commercial fishery data based on single-frequency acoustics
US AMLR datasets and used to mimic data that might be collected by the commercial fishery during the ... models of krill biomass, at120 kHz frequency that can be used to augment research acoustic surveys if ... Linear Modeling framework. We correlate these estimates of biomass with acoustic estimates derived from ... between these two areas and the 3-frequency biomass showed that models developed using a wide length ...
Meeting Document : SG-ASAM-12/04 : Autor(es): A.M. Cossio, G.W. Watters, C.S. Reiss, J. Hinke and D. Kinzey (USA)
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Semi-empirical acoustic estimates of krill biomass derived from simulated commercial fishery data based on single-frequency acoustics
US AMLR datasets and used to mimic data that might be collected by the commercial fishery during the ... models of krill biomass, at 120 kHz frequency that can be used to augment research acoustic surveys if ... Linear Modeling framework. We correlate these estimates of biomass with acoustic estimates derived from ... between these two areas and the 3-frequency biomass showed that models developed using a wide length ...
Meeting Document : SG-ASAM-15/03 : Autor(es): A.M. Cossio, G.W. Watters, C.S. Reiss, J. Hinke and D. Kinzey (USA)
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Indicative trends in by-catch of sharks in the CAMLR Convention Area
.” Further, that “any by-catch of sharks shall, as far as possible, be released alive.” Here, we examine ... comparison of data from vessels vs. scientific observers. This paper provides information that could be ... Abstract: Conservation Measure 32-18 on the conservation of sharks specifies that “directed ... scientific observers from the 1996–2017 fishing seasons. While there appear to be substantial gaps in the ...
Meeting Document : WG-FSA-18/63 Rev. 1 : Autor(es): C.D. Jones
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Scientific Abstracts 2000
‘submitted’ or ‘in press’ with details of the publisher, if known; (iii) scientific papers not intended for ... were submitted. Each abstract is preceded with a unique CCAMLR document number, e.g. SC-CAMLR-XIX/BG/11 ... Management). Unpublished papers must not be cited without written permission of the author(s). Addresses of ... transported southwards from the east of the archipelago and may be mixed with krill of the first group. It is ... ensure that vessels’ crews are aware of, and comply with, regulations prohibiting the disposal of debris ... correlation between parameters. These trials show that missing values were un- likely to be a problem for ... ECOPATH with ECOSIM feasibility study. Prof. T. Pitcher (Fisheries Centre, University of British Columbia ...
Document : Site Section: Publications
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Consideration of major issues in ecosystem monitoring and management
within which to investigate krill availability. Vital rates can be investigated directly and also by ... movement that may be related to feeding and spawning activity (Everson et al., 2001), although movement ... , circulation patterns are topographically driven such that adjacent colonies may be receiving water with ... oldest animal likely to be present in the population, such that = maxt t tb r NP In a situation ... assumption that mortality is not varying with age. Williams (1995) indicates that mortality may be high ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 213–232 : Autor(es): Everson, I
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Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data
(Euphausia superba) associated with the daylight phase over the diurnal cycle (i.e. brightness categories ... change during summer and winter in SS and SO. Daily average trawling depth tended to be shallower during ... day in summer in SS and SO. It is suggested that the seasonal and diurnal changes in vertical ... and June in SS, and the range during each month tended to be smaller than that in the same months in ... decreased after that in SG. It reached a maximum depth of 144 m (±2.2 m) in August but it shifted to a ... in SS, and the ratio for each month tended to be smaller than that of the same month in SO (1.4–2.2 ... 1992. It is suggested that the seasonal vertical distribution is closely correlated with switching to ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 163–172 : Autor(es): Taki, K., T. Hayashi and M. Naganobu
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Proposal for trials to test modified longline gear as a means to reduce cetacean depredation and mitigate incidental bird catch
conjunction with the observer’s report of that cruise (Basson 2006). Initial results were promising, and the ... ” longline configuration for mitigating cetacean interactions in 2006. This paper should be read in ... UK intends to proceed with further, more extensive trials, in the 2007/08 fishing season in Subarea ... 48.3. Although seabird interactions are expected to be minimal, the trials will stop if 3 seabirds are ...
Meeting Document : WG-FSA-07/31 : Autor(es): Delegation of the United Kingdom
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The US commercial krill fishery in Area 48: development, fishing patterns, and decision making
north of South Georgia; in 2001, all fishing was conducted off the South Shetland Islands and Bransfield ... concentrations of krill were found in Bransfield Strait in 2001 while fishing inside the ice edge. The success of ... . Increasing catch rates with time are likely related to the experience of the Captain, as opposed to indices ...
Meeting Document : WG-EMM-02/18 : Autor(es): C.D. Jones and M. Hull (USA)
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A review of conversion factors used in CCAMLR toothfish fisheries
be required to better understand the sources of this variability. The results suggest that a ... integral to the reporting of catches and reconciling those catches with data reported via the CDS. This ... that might influence those conversion factors. There was considerable inter-vessel variability as well ... persisted even within the same processing code, suggesting that more details on the processing methods may ...
Meeting Document : WG-FSA-15/02 : Autor(es): CCAMLR Secretariat
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Characterising the preferred at-sea habitats used by chinstrap penguins and the fishery for Antarctic krill: slow-flowing, nearshore waters over shallow bathymetry
. Nevertheless, we conclude that these models can, with some confidence, be extrapolated to predict the foraging ... , we report that chinstrap penguins prefer habitats with slow-flowing, nearshore waters over shallow ... Abstract: We show that the preferred habitat models developed by Warwick-Evans et al. (2017) for ... chinstrap penguins breeding at the South Orkney Islands, can be modified to predict the at-sea distribution ...
Meeting Document : WG-EMM-17/34 : Autor(es): P.N. Trathan, V. Warwick-Evans, J. Hinke, E.F. Young, A.P.B. Carneiro, M.P. Dias, K. Kovacs, O.R. Godø and M. Santos