Resultados de la búsqueda
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Krill: the power lunch of Antarctica
coverage on board krill vessels, identifying priority objectives for research and development in support of ... the management of the krill fishery, conducting a new krill synoptic survey, keeping the trigger level ... procedures with the aim of reducing speculative notifications, and requiring mandatory ice-strengthening for ... krill fishing vessels. Author(s): Submitted by ASOC Title: Krill: the power lunch of Antarctica ...
Meeting Document : CCAMLR-XXXIII/BG/25 : Autor(es): Submitted by ASOC
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Nesting behaviour of the icefish Chaenocephalus aceratus at Bouvetøya Island, Southern Ocean (CCAMLR Subarea 48.6)
Abstract: In this paper we describe in situ observations on nesting by the Scotia Sea (or ... blackfin) icefish Chaenocephalus aceratus that constitute the first substantive evidence of egg brooding ... and parental care by species of the family Channichthyidae. These novel observations are enriched by ... descriptions of the seafloor community that is impacted by fish nesting. Given the vulnerability of spawning ...
Meeting Document : WG-FSA-04/26 : Autor(es): H.W. Detrich III, C.D. Jones, S. Kim (USA), A.W. North (United Kingdom), A. Thurber (USA) and M. Vacchi (Italy)
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Preliminary insights of Antarctic toothfish sub-adults life-history traits from the southern Weddell Sea (Subarea 48.5)
Abstract: A few sub-adults of the Antarctic toothfish (Dissostichus mawsoni) were collected by ... bottom trawling carried out by the RV Polarstern in the southern Weddell Sea (Subarea 48.5) (PS82, ANT ... -Larsen Ice Shelf. In this document we report first data on individual age, gonad stage of maturity and ... -XXIX/9, 19 December 2013- 5 March 2014). Fishes were caught on the shelf and slope off the Riiser ...
Meeting Document : WG-FSA-18/06 : Autor(es): M. La Mesa, F. Donato and E. Riginella
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The use of predator-derived krill length-frequency distributions to calculate krill target strength
calculated from acoustic data. Changes in the lengthfrequency distribution of krill over a period of a few ... Paper Title: The use of predator-derived krill length-frequency distributions to calculate krill ... krill sampled from the diet of predators to provide a length-frequency distribution of krill at times ... to gain important estimates of krill biomass at times of the season hitherto unavailable from ... robust estimate of krill abundance to be calculated from acoustic data. Changes in the length ... resource management and to understanding the response of predators to environmental changes. In many ... , in order to consider the interaction between these two factors, measures of prey availability need ... is the Calculation of krill target strength ratio (in decibels, dB) that quantifies the ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 155–163 : Autor(es): Reid, K. and A.S. Brierley
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Tracer trajectories from the western shelf of South Georgia: ship displacement data
the west of South Georgia. The data were collected over a six-week period during 1986. A distance ... weighted interpolation was used to obtain tracer trajectories in this irregular data grid. The vector field ... . Particles getting onto the shelf become retained with little escape after a run of 100 days. Some of the ... trajectories are extremely complex. Particles to the north of the shelf can get up onto the shelf. Only those ...
Meeting Document : WS-Flux-94/10 : Autor(es): E.J. Murphy, I. Everson and C. Goss (United Kingdom)
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Biodiversity of the benthos off Kerguelen Islands: overview and perspectives
number of species recorded from the Kerguelen has substantially increased. From 172 species reported by ... Arnaud (1974), the total number of species has increased dramatically to 735 (Jouventin et al., 1996) and ... then to 960 in the present study. This area is particularly vulnerable to human activities and global ... northern limit of the Polar Front is probably one of the best study areas to (1) monitor the impact of ...
Meeting Document : WS-MPA-11/P03 : Autor(es): N. Améziane, M. Eléaume, L.G. Hemery, F. Monniot, A. Hemery, M. Hautecoeur and A. Dettaï
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The use of predator-derived krill length-frequency distributions to calculate krill target strength
in the length-frequency distribution of krill over a period of few weeks produced a 10 % difference ... ecosystem based approach to resource management. We propose a method using krill sampled from the diet of ... krill biomass at times of the season hitherto unavailable from ship-board scientific surveys. Author(s ... ): K. Reid and A.S. Brierley (United Kingdom) Title: The use of predator-derived krill length ...
Meeting Document : WG-EMM-00/42 : Autor(es): K. Reid and A.S. Brierley (United Kingdom)
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Quantification of Southern Ocean phytoplankton biomass and primary productivity via satellite observations and biogeochemical models (submitted to the 2008 Joint CCAMLR-IWC Workshop)
regard to their use in the Southern Ocean. A brief history of algorithms linking ocean colour to primary ... / Description: This paper reviews Southern Ocean primary productivity within the framework of satellite remote ... sensing and the development of food-web models. The satellite ocean colour (chlorophyll) data record is ... described, from the Coastal Zone Colour Scanner (CZCS) in the late 1970s through to the Ocean Colour and ... significant spatial and temporal vari- ability in primary productivity. It is also the region of the global ... estimates of all terms in the oce- anic carbon budget, including primary productiv- ity. In this paper ... use in the Southern Ocean. A brief history of al- gorithms linking ocean colour to primary ... blooms is presented for the major provinces surrounding Antarctica. Some of the published in- formation ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 247–265 : Autor(es): P.G. Strutton, N.S. Lovenduski, M. Mongin and R. Matear
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Indices of prey availability near the Seal Island CEMP site: 1990 to 1996
/ Description: Four indices of prey availability are calculated from surveys conducted in the vicinity of the ... Paper Title: Indices of prey availability near the Seal Island CEMP site: 1990 to 1996 Abstract ... Seal Island CEMP site during the austral summers of 1990 to 1996. The indices are measures of average ... surveys each year were subsampled to include the foraging range of predators breeding at Seal Island ... availability are calculated from surveys conducted in the vicinity of the Seal Island CEMP site during the ... pattern and energy value. In this paper, indices are proposed for the first four of these aspects of ... sources. Approximately 50 000 km2 of sea surface area in the northern portion of the South Shetland ... , in press (a,b)). Echoes from a 120-kHz transducer, towed 5 m below the surface of the water (1992 ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 37–45 : Autor(es): Hewitt, R.P., G. Watters and D.A. Demer
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Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined with various codends
. It was found that the selectivity properties of twine codends are unsatisfactory in the case of ... Paper Title: Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined ... , especially Scotia Sea icefish and South Georgia icefish the determination of a proper mesh size of trawls ... used in fishing for them requires further research. It should first of all cover twine codends with a ... of the difference in cm between the mean length of fish for selectivity levels 75 and 25%; - 8 ... % selectivity level, A = mean mesh size in the codend determined for a given stage of investigations (wet ... selectivity properties of twine codends are unsatisfactory in the case of Antarctic icefish, burnphead ... Sea icefish and South Georgia icefish the determination of a proper mesh size of trawls used in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 1-48 : Autor(es): Zaucha, J.