Search results
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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 : Author(s): A. Clarke and P.A. Tyler
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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 : Author(s): 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 : Author(s): R.P. Hewitt (USA), V. Marín (Chile) and D. Demer (USA)
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MaxEnt reconstructions of krill distribution and estimates of krill density from acoustic surveys at South Georgia 1996–2000
gathered in the boxes in austral summers 1996 – 2000. Krill densities had previously been determined at ... approximately 0.5 km intervals along transect for each of the ten 80 km transects in each box, providing about ... probable krill density for each of the 32000 0.5 km x 0.5 km cells in each survey box, taking explicit ... account of the spatial relationship between densities in the observed data. Despite some very large ...
Meeting Document : WG-EMM-02/36 : Author(s): M.H. Wafy, A.S. Brierley, S.F. Gull and J.L. Watkins (United Kingdom)
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Beach debris survey – Main Bay, Bird Island, South Georgia, 1997/98
revealed a total of 430 items, 49 percent more than the total of 289 items in 1996/97. The increase of the ... winter (April-September) total was 10 percent, from 109 items in 1996/97 to 120 items in 1997/98 both of ... of items collected in the summer was 310, an increase of 72 percent from the 1996/97 total of 180 ... of which clearly came from fishing vessels. The lower levels of debris collected in the winter months ...
Meeting Document : CCAMLR-XVIII/BG/6 : Author(s): Delegation of the United Kingdom
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BEACH DEBRIS SURVEY – MAIN BAY, BIRD ISLAND, SOUTH GEORGIA 1995/96
revealed a total of 710 items, 2% less than the record total of 725 items in 1994/95. However, whereas the ... total amount of debris collected during the winter (April-September) was 40% lower than in 1994/95, the ... continuing high levels of man-made debris and the recent rapid increase in levels during summer, coinciding ... with increases in entanglement of Antarctic fur seals, is of growing concern. Furthermore, despite the ...
Meeting Document : CCAMLR-XVI/BG/4 : Author(s): Delegation of the United Kingdom
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Climate change and precautionary spatial protection: seasonal sea ice
Abstract: Regional climate change is now known to be well established in the Antarctic; however ... respond to climate change is potentially best carried out in regions and with species that have been ... harvesting. If CCAMLR is to embrace the wider implications of climate change in the context of ecosystem ... change, both in the presence of and absence of harvesting. We therefore recommend that locations ...
Meeting Document : WS-MPA-11/18 : Author(s): P.N. Trathan and S.M. Grant (UK)
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First CCAMLR Performance Review
with experience in relevant areas of science, fisheries management and legal matters. Report of the ... with its authors. The views and recommendations contained in the report do not necessarily reflect the ... views of the organisation, the Commission or its Members. Review responses At its meetings in 2008 and ... , SCAF and Scientific Committee) to address each of the recommendations in the Panel’s report. Addressing ...
Page : Site Section: The Organisation
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Review of fishery monitoring and forecast procedures
groups) in CCAMLR fisheries, including catches taken from small-scale research units and other management ... closed 68 fishing areas, and the total catches of Dissostichus in areas closed using the forecast model ... will operate in the future in the same way as it did in the period from which the data are used to make ... will be inaccurate. A range of management options are considered in response to a catch overrun. The ...
Meeting Document : WG-SAM-13/06 : Author(s): Secretariat
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Effects of different harvesting strategies on the mackerel icefish Champsocephalus gunnari around South Georgia
interval of three years with no fishing in between; and changes in net selectivity resulting in a shift in ... fishing proved to be the least preferable harvesting alternative. In the absence of regular recruit ... , should not occur earlier than four years after a good recruitment. A forward shift in partial recruitment ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 77–100 : Author(s): Köster, F.W. and K.-H. Kock