Search results
-
Changes in biomass of eight species of finfish around the South Orkney Islands (Subarea 48.2) from three bottom trawl surveys
Paper Title: Changes in biomass of eight species of finfish around the South Orkney Islands ... (Subarea 48.2) from three bottom trawl surveys Abstract / Description: Stocks of finfish exploited around ... /90. The biomass of several species of finfish has been monitored through scientific bottom trawl ... surveys within the 500 m isobath of the South Orkney Islands, most recently by the Federal Republic of ... . However, overall levels of biomass indicate very little potential for commercial exploitation at this ... at two stations north of Coronation Island (Figure 4f). Large catches were also taken at another ... potentially the result of low effort directed at finfish in the region after 1982/83 and the final closure ... limit is roughly at 4% of pre- exploitation levels (Kock et al., 1985) around the South Orkney Islands ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 53–74 : Author(s): Jones, C.D., K.-H. Kock and E. Balguerías
-
Atlas of top predators from French Southern Territories in the Southern Indian Ocean
. Indeed, seabirds and seals are considered as good indicators of changes in ecosystems at differential ... mitigation actions and restricted protection of the sole coastal areas, are insufficient, especially for the ... seabirds and marine mammals forage. The first stage of most conservation planning is to identify areas that ... identify areas of high species richness (hotspots), focusing on threat level (endangered species). This ...
Meeting Document : WG-EMM-16/42 : Author(s): K. Delord, C. Barbraud, C.-A. Bost, Y. Cherel,C. Guinet and H. Weimerskirch
-
An exploration of the biological data used in the CCAMLR Subarea 48.3 Patagonian toothfish stock assessments
subarea 48.3 are analysed here, particularly whether the proportion of females in the catch, maturity at ... or maturity through time, after the effects of confounding factors were included in the analysis ... . Author(s): E. MacLeod, K. Bradley, T. Earl, M. Söffker and C. Darby Title: An exploration of the ...
Meeting Document : WG-SAM-2019/32 : Author(s): E. MacLeod, K. Bradley, T. Earl, M. Söffker and C. Darby
-
PROPOSED APPROACH FOR THE IDENTIFICATION OF IMPORTANT MARINE AREAS FOR CONSERVATION: USING ‘MARXAN’ SOFTWARE TO SUPPORT SYSTEMATIC CONSERVATION PLANNING
Abstract: We provide a worked example of how a systematic conservation planning methodology ... (Margules & Pressey, 2000) might be used to identify important areas for conservation of biodiversity in ... the pelagic environment, using Subarea 48.2 (South Orkney Islands) as a pilot study area. The aim of ... the worked example is not to identify areas for protection or management at this stage, but rather to ...
Meeting Document : WG-EMM-08/49 : Author(s): S.M. Grant, J. Tratalos and P.N. Trathan (United Kingdom)
-
A preliminary assessment of the stock of the ommastrephid squid Martialia hyadesi in the Scotia Sea based on data from predators
Paper Title: A preliminary assessment of the stock of the ommastrephid squid Martialia hyadesi in ... target species. It is likely, therefore, that exploitation of the sub-Antarctic ommastrephid species ... Martialia hyadesi; will be attempted in the future. This squid is an important component of the diet of ... several species of albatross and the southern elephant seal and is probably taken in significant ... , 94% of which is taken by southern elephant seals, and the other species may take at least a further ... SC-CAMLR-IX/BG/13 A PRELIMINARY ASSESSMENT OF THE STOCK ... OF THE OMMASTREPHID SQUID MARTIALIA BY ADESI IN THE SCOTIA SEA BASED ON DATA FROM PREDATORS· P.G ... exploitation of the sub-Antarctic ommastrephid species Martialia hyadesi will be attempted in the future. This ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 479–480 : Author(s): Rodhouse, P.G.
-
Analysis of krill trawling positions north of the South Shetland Islands (Antarctic Peninsula area), 1980/81–1999/2000
krill, especially at the beginning of the operation each season. In summer, biological factors that ... Abstract: Inter- and intra-annual variability of commercial krill trawling positions for the 1980 ... /81 to 1999/2000 seasons in the area to the north of South Shetland Islands were analyzed in relation ... the shelf across to the outer shelf in the early to late 1990’s. Intra-annual variation of trawling ...
Meeting Document : WG-EMM-01/35 : Author(s): S. Kawaguchi and K. Segawa
-
An automated weighing and recording system as an aid for the study of the foraging ecology of Adelie penguins (Pygoscelis adeliae)
Abstract: A System that automatically weighs, identifies and determines the direction of penguins ... colony (589 nests from which 412 chicks were fledged) and related to the foraging ecology of the Adélie ... penguin Pygoscelis adeliae are presented for the period hatching to fledging. These were obtained at ... /2 breeding season. The System logged more than 80,000 penguin crossings over a period of three ...
Meeting Document : WG-CEMP-92/20 : Author(s): K. Kerry, J. Clarke and G. Else (Australia)
-
Selectivity of standard Polish commercial trawl codends on Antarctic fishing grounds
fishery were conducted in 1950-1980. Cieglewicz and Strzyzewski (1960) studies the mechanism ... icefish and bumphead notothenia. The solution to the problem of ensuring selectivity of codends at a ... Paper Title: Selectivity of standard Polish commercial trawl codends on Antarctic fishing grounds ... Abstract / Description: Selectivity studies were carried out for two types of steelon codends used in ... commercial fishery, with a nominal mesh size A = 80 mm and A = 100 mm, made of double twines with a thickness ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 107-142 : Author(s): Zaucha, J.
-
Indices of prey availability near the Seal Island CEMP site: 1990 to 1996
surveys each year were subsampled to include the foraging range of predators breeding at Seal Island ... Paper Title: Indices of prey availability near the Seal Island CEMP site: 1990 to 1996 Abstract ... / Description: Four indices of prey availability are calculated from surveys conducted in the vicinity of the ... Seal Island CEMP site during the austral summers of 1990 to 1996. The indices are measures of average ... to include the foraging range of predators breeding at Seal Island. Indices derived from these data ... composition at a spatial scale of tens of kilometres. Survey designs, including station positions and ... 100 m. This was assumed to be the foraging space of krill predators that breed at Seal Island ... and 1993) or hull-mounted at 5 m depth (1994 to 1996), were passed to a Indices of Prey ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 37–45 : Author(s): Hewitt, R.P., G. Watters and D.A. Demer
-
Krill fishery report: 2013 update
151161 t, 86% of which was taken from Subarea 48.1. At the time of preparing this report, the cumulative ... catch of krill was 161085 t (Subarea 48.1: 75630 t; Subarea 48.2: 29040 t; Subarea 48.3: 56415 t). The ... largest catch of krill by small-scale management unit was taken in ‘South Georgia East’ in Subarea 48.3 ... with a total catch of 50218 t. So far this season (2012/13), 11 vessels from Chile, China, Korea ...
Meeting Document : WG-EMM-13/37 Rev. 1 : Author(s): Secretariat