Résultats de la recherche
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Variation in the diet of the blue-eyed shag Phalacrocorax atriceps throughout the breeding season at Half-Moon Island, South Shetland Islands
qualitatively and quantitatively similar to that reported for the 1992/93 austral summer at the same colony ... . However, the pellet analysis throughout the 1993/94 breeding season showed that large N. coriiceps were ... important in mass (79%), followed by N. nudifrons and T. newnesi. The overall composition of the diet was ...
Meeting Document : WG-EMM-95/78 : Auteur(s): Barrera-Oro, E., Casaux, R.
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Estimation of natural mortality using catch-at-age and aged mark-recapture data: a simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation
Abstract: Attempts to estimate natural mortality, as a single constant M, simultaneously with ... . The model based on a new mortality equation (CCODE model) uses an ODE with constant within-year catch ... per unit time for each age class, and as a result allows catch to be removed directly from the ... fishery that is not substantially depleted within any single fishing season, given fishers tend to ...
Meeting Document : WG-SAM-10/11 Rev. 1 : Auteur(s): S.G. Candy (Australia)
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Winter habitat selection by Antarctic krill will increase krill-predator-fishery interactions during ice free years
around the Antarctic Peninsula in winters with contrasting ice conditions provide the first acoustic ... estimates of krill biomass, habitat use, and association with top predators to examine these likely ... , or primary production and in areas that are becoming more frequently ice free (Stammerjohn et al ... open waters are available to fishing vessels. Changes to conservation measures may be necessary to ...
Meeting Document : WG-EMM-15/05 : Auteur(s): C.S. Reiss, A. Cossio, C.D. Jones, A. Murray, G. Mitchell, J. Santora, K. Dietrich, E. Weiss, C. Gimpel, J. Walsh and G.M. Watters (USA)
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WG-EMM-07
with the Antarctic krill T. Iwami and M. Naganobu (Japan) WG-EMM-07/33 Distribution and abundance of ... Histopathology of Antarctic krill (Euphausia superba) bearing black spots S. Miwa, T. Kamaishi, T. Matsuyama, T ... Antarctic krill (Euphausia superba) off East Antarctic (30–80°E) in January–March 2006 T. Jarvis, N. Kelly ... epipelagic macrozooplankton in the Ross Sea Y. Watanabe, S. Sawamoto, T. Ishimaru and M. Naganobu (Japan) WG ...
Meeting
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Green krill, the indicator of micro- and nano-size phytoplankton availability to krill
significant regressions with chlorophyll-a concentrations in micro and nano- size fraction. This result shows ... in the natural environment. Author(s): S. Kawaguchi, T. Ichii and M. Naganobu (Japan) Title: Green ...
Meeting Document : WG-EMM-98/29 : Auteur(s): S. Kawaguchi, T. Ichii and M. Naganobu (Japan)
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Potential interactions between wandering albatrosses and Dissostichus eleginoides fisheries at South Georgia
level of potential risk of interaction with Patagonian toothfish Dissostichus eleginoides longline ... risk from these fisheries at this time. We recommend that the South Georgia longline fishery for ... Dissostichus should be managed so as to avoid fishing between March and mid-May. Author(s): Prince, P.A ...
Meeting Document : WG-FSA-95/43 : Auteur(s): Prince, P.A., Croxall, J.P.
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DEPREDATION AROUND SOUTH GEORGIA AND THE IMPLICATIONS ON STOCK ASSESSMENT OF D. ELEGINOIDES
%) with killer whales present on 562 lines (3.8%) and sperm whales on 2588 lines (17.7%). By comparing the ... catch per unit efforts (CPUEs) with and without the presence if cetaceans, the amounts lost were also ... . To date, a total of 35 killer whales and 65 sperm whales have been seen, with re-sightings occurring ... distance of 3.4nm away were picked up by the hydrophones and it is thought that these acoustic cues could ...
Meeting Document : WG-FSA-09/16 : Auteur(s): J. Moir Clark, D.A. Agnew, P. McCarthy and M. Unwin (United Kingdom)
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Physical oceanographic setting of the Siedlecki January 1987, South Shetland Island data set
Confluence in the Bransfield Straits is associated with abundant Krill populations. It is speculated that ... a zone of varied width (10 to 100 Km) of water which can best be considered as continental margin ... processes of Bransfield Straits water (derived from the Weddell, with further local modification): an ... Scotia Front protrudes to the south, perhaps associated with meso-scale structures. The Weddell-Scotia ...
Meeting Document : SC-CAMLR-VII/BG/19 : Auteur(s): United States of America
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Krill length frequency distribution in Subarea 48.3 in January–April 1988 in relation to sources of its origin
Current and Weddell Scotia Sea water flow. It is shown, that small krill with the mode of about 33 mm is ... distance of about 30-60 miles, beyond boundary zone occurs larger krill with the mode of about 49 mm. Krill ... and main water flow may reach 6 mm. Such spots may be considered as initial stage of krill ...
Meeting Document : WG-EMM-03/40 : Auteur(s): F.F. Litvinov, V.N. Shnar, A.V. Zimin and V.V. Lidvanov (Russia)
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An analysis of temporal variability in abundance, diversity and growth rates in the coastal ichthyoplankton assemblage of South Georgia (sub-Antarctic)
, SIMPER). Multiple regression analyses indicated that larval abundance within Cumberland Bay was not ... significantly correlated with local SST or primary productivity. Estimates of larval growth are provided for 5 ... , representing a protracted spawning season, were observed to grow at different rates and this may be related to ... temperature and /or food availability. A comparison with historical growth data from South Georgia suggests ...
Meeting Document : WG-FSA-12/33 : Auteur(s): M. Belchier and J. Lawson (United Kingdom)