Resultados de la búsqueda
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Variability and predictability of Antarctic krill swarm structure
) echosounder, concurrent with net sampling. The acoustic data were analysed through applying a swarm ... 1 swarms were generally small (< 50 m long) and were not very tightly packed (< 10 ind m-3 ... and large and superswarms within the type 2 group. A minor group (swarm type 3) was also found ... over the survey grid was examined with respect to a number of potential explanatory variables ...
Meeting Document : WG-EMM-10/P10 : Autor(es): G.A.Tarling, T. Klevjer, S. Fielding, J. Watkins, A. Atkinson, E. Murphy, R. Korb, M. Whitehouse and R. Leaper
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Surface exchange between the Weddell and Scotia Seas
transport pathways between the eastern Antarctic Peninsula and sites of elevated chlorophyll in the Scotia ...
Meeting Document : WG-EMM-14/P03 : Autor(es): A.F. Thompson and M.K. Youngs
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Research plan to assess the stock status of Dissostichus spp. in Subarea 48.2
in accordance with Conservation Measure 24-01 (paragraph 3). Author(s): Submitted by the Secretariat ...
Meeting Document : WG-SAM-13/15 : Autor(es): Submitted by the Secretariat on behalf of Ukraine
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Fish identification guide for Observers in CCAMLR krill fisheries
Abstract: The Secretariat, with assistance from Prof Tetsuo Iwami, has developed a simple fish ... CCAMLR krill fishery. The draft guide provided includes a single key to distinguish fish families and 3 ...
Meeting Document : WG-EMM-13/07 : Autor(es): Secretariat
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
, with killer whales present on 3.8% and sperm whales on 17.7% of lines. Killer whales appear in pod ... , depressing CPUE by up to 20%. Sperm whales have been more frequently encountered in recent years, occurring ... . Most interactions from sperm whales occur during May at the start of the season with the sightings ... consistent with no obvious pattern between months. Both species demonstrate an east to west migration ...
Meeting Document : WG-FSA-10/P06 : Autor(es): J. Moir Clark and D.J. Agnew
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Statistical power to detect changes in growth rates of Antarctic fur seal pups
changes (between years) in pup growth rates, the loss of power associated with obtaining weight samples on ... detect a 17% change in the growth rate with a 10% chance of committing Type 1 or Type 2 errors. If only ... for each year and as weighted averages of both years. Growth Rate Standard Error (kg/d) of Growth ... Numerical simulations were used to investigate the power of methods for detecting changes (between years ... ) in pup growth rates, the loss of power associated with obtaining weight samples on only three dates ... % change in the growth rate with a 10% chance of committing Type 1 or Type 2 errors. If only three samples ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 399–409 : Autor(es): Boveng, P., J.L. Bengtson and M.E. Goebel
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Fishery Report: Dissostichus eleginoides (TOP) South Georgia (Subarea 48.3)
continued at a rate of 1.3 fish per tonne with a total of 3 026 fish tagged (with 512 recaptures). 3 ... demonstrated full compliance with CM 25-02 in the previous season. In 2012, an early extension was allowed so ... . Stock assessment ........................................................................ 2 3. By ... -catch of fish and invertebrates ..................................................... 3 3.1 ...
Document : Site Section: Publications
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Decadal trends in the South Georgia demersal fish assemblage
biomass were seen across survey years. Species counts were highly variable across the shelf region and ... years accounting for 97% of total demersal fish biomass. The relative abundance of these species was ... demersal fish catch rates was observed with the highest mean CPUE s seen in surveys since 2010 but this was ...
Meeting Document : WG-FSA-13/26 : Autor(es): M. Belchier (United Kingdom)
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Temporal changes in sighting density indices of baleen whales in CCAMLR Subareas 48.1 and 48.2 based on three circumpolar sighting surveys
. CPI, CPII and CPIII data in Subarea 48.1 corresponded to years 1982/83, 1989/90 and 1993/94+1999/00 ... , respectively while that in Subarea 48.2 those corresponded to years 1981/82, 1986/87 and 1997/98, respectively ... are consistent with abundance estimates trend in humpback and Antarctic minke whales. Two issues are ...
Meeting Document : WG-EMM-16/26 : Autor(es): L.A. Pastene and T. Hakamada
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Report on fish by-catch during exploratory fishing activities in Division 58.4.3a (Elan Bank) between 2008 and 2018
%, autolines ratio was up to 70% in some years. Hence, bycatch number and biomass increased strongly the years ... with high skate CPUE led to a very high cumulated number of skates caught in 58.4.3a. While most skates ...
Meeting Document : WG-FSA-2019/56 : Autor(es): C. Péron, C. Chazeau, N. Gasco and F. Massiot-Granier