Résultats de la recherche
-
On biogeographic patterns of benthic invertebrate mega fauna on shelf areas of the Southern Ocean Atlantic sector
communities incorporates a range of data on physical, environmental and biological properties, as well as the ... catches in order to identify and characterise such communities for comparative purposes at a fine spatial ... , reveals a two-layered pattern based on the standardised total biomass data and the composition of phyla ... physical oceanographic data for the region, a pattern of shelf faunal zonation emerges. Patterns of benthic ...
Meeting Document : WS-BSO-07/10 : Auteur(s): S.J. Lockhart and C.D. Jones (USA)
-
On possible influence of continuous krill fishing technology with the use of ‘air-bubbling suspension system’ on ecosystem elements
location, fishing effort, etc.), the trawl design and fishing method should be considered as a constituent ... processing technology, including waste recovery, may become a constituent part of fishery influence on ... is compared with a conventional fishing method. It was shown that not only hydrobionts, which are in ... (seals, fish, for instance), though not fished by trawl, can be exposed to ecological pressing at a ...
Meeting Document : WG-EMM-06/27 : Auteur(s): S.M. Kasatkina and V.A. Sushin (Russia)
-
Standardised CPUE analysis of the Antarctic toothfish (Dissostichus mawsoni) fishery in the Ross Sea for the years 1997/98 to 2005/06
2006 season for the Ross Sea using the revised location data for (a) all vessels and (b) core vessels ... generalised linear models and a Tweedie mixed model. The variables included in the analysis appeared ... yearly indices were relatively stable between 1998 and 2003, with a decline in 2004, and an increase in ... current time. Author(s): A. Dunn and S.M. Hanchet (New Zealand) Title: Standardised CPUE analysis of the ...
Meeting Document : WG-FSA-06/47 : Auteur(s): A. Dunn and S.M. Hanchet (New Zealand)
-
Measurement of ocean temperatures using instruments carried by Antarctic fur seals
coastal waters around South Georgia. There was a significant correlation between temperature measurements ... made using a towed undulating oceanographic recorder (UOR) and concurrent measurements from time-depth ... longitude), and at a vertical scale of 10 m. However, there was no significant correlation between ... warmer surface water in a region in which more run-off was to be expected. The study also showed that ...
Meeting Document : WG-EMM-01/56 : Auteur(s): I.L. Boyd, E.J. Hawker, M.A. Brandon and I.J. Staniland (United Kingdom)
-
Beach debris survey Signy Island, South Orkney Islands 1997/98
was counted, measured and classified by type, material, weight and size categories. A total of 29 ... and four items with a total weight of 1.7 kg were found at Starfish Cove. The total number of marine ... follows a continuing downward trend since 1993/94. The total weight of debris was 400/0 higher compared ... at Signy Island in 1997/98 continues a promising trend. However the considerable amount of plastic ...
Meeting Document : CCAMLR-XVII/BG/20 : Auteur(s): Delegation of the United Kingdom
-
Assessment models for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea for the years 1997–98 to 2010–11
reference model using the selected trips tag data gave a similar, but slightly higher estimate of initial ... biomass than the 2009 base case. Retrospective analysis suggests that this is partly as a result of the ... increased number of vessels in selected data set and partly as a result of the 2010 and 2011 observations ... 78.6–81.3).The estimated yield, using the CCAMLR decision rules, was 3282 t Author(s): S. Mormede, A ...
Meeting Document : WG-FSA-11/42 : Auteur(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)
-
ASSESSMENT MODELS FOR ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN SUBAREA 88.2 SSRU E FOR THE YEARS 2002/03 TO 2008/09
model resulted in a higher estimate of initial biomass than the same model for 2006, but the estimated ... initial biomass was very imprecise. The selected trips data set resulted in a more precise estimate of ... from different years. The use of the selected trips with the revised maturity ogive resulted in a ... selectivity equal to the current fishing selectivity. Author(s): A. Dunn and S.M. Hanchet (New Zealand) Title ...
Meeting Document : WG-FSA-09/41 : Auteur(s): A. Dunn and S.M. Hanchet (New Zealand)
-
AERIAL SURVEYS OF WEDDELL SEALS DURING 2007-08, WITH NOTES ON THE HISTORY OF AERIAL CENSUSES IN THE ROSS SEA AND RECOMMENDATIONS FOR CONTINUED COUNT EFFORT
place under CCAMLR with respect to the Ross Sea toothfish fishery. In a previous paper submitted to EMM ... variability and the variance that could be expected over a time when the Ross Sea system was without influence ... from industrial fishing. On the basis of this and the previous paper, a Weddell seals monitoring ... program can now be put into effect under CEMP, begun with a one-time survey to identify all important haul ...
Meeting Document : WG-EMM-08/23 : Auteur(s): D. Siniff and D. Ainley (USA)
-
Oceanic debris observations in the southern ocean whale sanctuary, from Antarctic Peninsula to the Ross Sea: December 1994 to March 1995
styrofoam fragments. Fishing gear was not a major component of man-made debris. Macrolitter consisted mainly ... of seabird feathers. A very high density (544 per 10nm) of penguin feathers occurred northeast of the ... Ross Sea a single sample contained 31 small dead fish. Natural mesolitter quantities were usually low ... encountered. Biological associations with debris were not common, but included a filamentous green alga and ...
Meeting Document : SC-CAMLR-XVI/BG/29 : Auteur(s): ASOC Observer
-
Variation in echosounder calibration with temperature and some possible implications for acoustic surveys of krill biomass
Abstract: Accurate estimation of krill biomass by acoustic techniques is dependant upon a number ... 2.0 °C) than in European waters (7.3 °C), and a similar trend was detected at 38 kHz. If European ... ensure that echo-sounders are calibrated at a location as close as possible to the area in which surveys ... are to be conducted. In addition, the implications of temperature variation across a survey area for ...
Meeting Document : WG-EMM-97/52 : Auteur(s): Watkins, J.L., Woodroffe, P., Brierley, A.S., Goss, C.