Resultados de la búsqueda
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ADULT ANTARCTIC KRILL FEEDING AT ABYSSAL DEPTHS
the Southern Ocean, and a key species in the Antarctic food web. The Discovery Investigations in the ... actively at abyssal depths in the Southern Ocean. Biological observations from the deepwater remotely ... operated vehicle Isis in the austral summer of 2006/07 have revealed the presence of adult krill (Euphausia ... superba Dana), including gravid females, at unprecedented depths in Marguerite Bay, western Antarctic ...
Meeting Document : WG-EMM-08/P01 : Autor(es): A. Clarke and P.A. Tyler
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THE WHITE-CHINNED PETREL (PROCELLARIA AEQUINOCTIALIS) ON SOUTH GEORGIA: POPULATION SIZE, DISTRIBUTION AND GLOBAL SIGNIFICANCE
Abstract: More white-chinned petrels (Procellaria aequinoctialis) are accidentally killed in ... fisheries than probably any other seabird in the world, but the population impact of this mortality is ... poorly understood, partly because there have been no estimates of the species’ abundance in recent ... million pairs of white-chinned petrels laid on South Georgia in the survey seasons (2005/06 and 06/07 ...
Meeting Document : WG-EMM-PSW-08/05 : Autor(es): A.R. Martin, S. Poncet, C. Barbraud, P. Fretwell and E. Foster (United Kingdom)
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CCAMLR TAGGING PROGRAM
Abstract: In 2008 WG-FSA recommended that the Secretariat undertake to identify the tagging event ... tagging details of a greater proportion of tags than reported last year which has resulted in an improved ... proportion of the tags that can now be linked to tagging events in exploratory fisheries (Table 1). The ... recapture linkage rate for rajids has been lower than for toothfish in Subareas 88.1 and 88.2. The linking ...
Meeting Document : WG-SAM-09/04 : Autor(es): Secretariat
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AND DOMESTIC SUBANTARCTIC FISHERIES BY THE AUSTRALIAN ANTARCTIC DIVISION AND THE AUSTRALIAN FISHERIES MANAGEMENT AUTHORITY
targeting finfish in the CCAMLR area. As the assessments and conservation measures employed by CCAMLR ... increase in sophistication, the tasks required to be completed by observers are increasing in number and ... complexity. Such a set of qualities is rarely available ‘off the shelf’. To ensure that observers in these ... quality assurance has been developed. This system covers all aspects of the observers’ experience in the ...
Meeting Document : TASO-08/05 : Autor(es): O’Regan, K., Welsford, D., Robertson, T., Lamb, T.
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Laboratory target strength measurements of free swimming Antarctic krill (Euphausia superba)
beam monostatic system in a 10 m3 laboratory tank. Krill (grouped according to length classes) swam ... freely in the tank triggering the data acquisition system when generating a back scattered signal larger ... single animal insonifications. For mean length classes in the range [29.6, 36.2] mm the median single ... -animal target strengths are in the range [-76.7,-71.8] dB. Monte Carlo computer simulations were used to ...
Meeting Document : WG-EMM-97/75 : Autor(es): Pauly, T., Penrose, J.D.
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An attempt to derive a composite index of abundance from acoustic surveys and fishery data
distribution of fishing effort in the Chilean krill fishery indicate an area of high krill density wrapping ... around the northwestern end of Elephant Island during the austral summer of 1992. In this area, the ... . In addition, the data suggest that the abundance of krill in the Elephant Island area can change ... rapidly, and when krill do come into to the area they are most often found in water 100m-500m depth along ...
Meeting Document : WG-Krill-94/14 : Autor(es): R.P. Hewitt (USA), V. Marín (Chile) and D. Demer (USA)
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Sensitivity analysis identifies high influence sites for estimates of penguin krill consumption on the Antarctic Peninsula
. Antarctic krill (Euphausia superba) is a significant component of diet for penguins breeding in this region ... in krill predation estimates. We use a comprehensive database of Antarctic penguin abundances to ... of pygoscelid penguins breeding in this region. We find that a high quality survey of Zavodovski ... Island alone would decrease uncertainty in total population by 24.8%, whereas high quality surveys of all ...
Meeting Document : WG-EMM-12/P02 : Autor(es): H.J. Lynch, N. Ratcliffe, J. Passmore, E. Foster and P. N. Trathan
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Review of the South Orkney Islands Southern Shelf (MPA Planning Domain 1, Subarea 48.2)
in 2009 (CCAMLR-XXVIII paragraph 7.1; CM 91-03) with the objective of contributing towards the ... conservation of biodiversity in Subarea 48.2, and to the development of a representative system of protected ... , based on advice from the Scientific Committee, at its regular meeting in 2014 and at subsequent five ... -year periods (CM 91-03, paragraph 9). Based on assessments described in the draft MPA Report and draft ...
Meeting Document : WG-EMM-14/26 : Autor(es): Delegation of the European Union
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Circumpolar connections between Antarctic krill (Euphausia superba Dana) populations: Investigating the roles of ocean and sea ice transport
in the Southern Ocean. Krill have a close association with sea ice which provides access to a ... critical food source and shelter, particularly in the early life stages. Advective modelling of transport ... potential roles of the ocean and sea ice in maintaining the observed circumpolar krill distribution. We show ... that the Antarctic Coastal Current is likely to be important in generating the large-scale distribution ...
Meeting Document : WG-EMM-07/P10 : Autor(es): S.E. Thorpe, E.J. Murphy and J.L. Watkins (United Kingdom)
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Measurement of ocean temperatures using instruments carried by Antarctic fur seals
measuring physical oceanographic variation and, using this method, to examine temperature variation in the ... temperature measured by TDRs in the top 5 m and sea surface temperature (SST) measured by satellite remote ... , and through time. The UOR data were used to recalibrate the TDR data in order to correct for the slow ... South Georgia. In particular, the relationship between on- and off-shelf waters showed larger amounts of ...
Meeting Document : WG-EMM-01/56 : Autor(es): I.L. Boyd, E.J. Hawker, M.A. Brandon and I.J. Staniland (United Kingdom)