Search results
-
Growth of Antarctic krill Euphausia superba at South Georgia
Abstract: Antarctic krill Euphausia superba has a central role in the ecosystem of the Southern ... dynamics. The length of Antarctic krill in the diet of Antarctic fur seals Arctocephalus gazella at South ... Antarctic Peninsula region. The effect of geographical variation in growth rate on the population structure ... in the interpretation of krill life cycles. Author(s): K. Reid (United Kingdom) Title: Growth of ...
Meeting Document : WG-EMM-01/18 : Author(s): K. Reid (United Kingdom)
-
Spatial distribution of foraging by female Antarctic fur seals
they forage intensively. However, mean consumption was about one-tenth of the mean density of krill. Author ... they forage intensively. However, mean consumption was about one-tenth of the mean density of krill. ...
Meeting Document : WG-EMM-01/26 : Author(s): I.L. Boyd, I.J. Staniland and A.R. Martin (United Kingdom)
-
Hydrometeorological condition features in South Orkneys subarea in February–March 1996
position and geostrophical current velocities distribution in the limits of the polygon investigated. There ... are observed exceeding of the atmospheric circulation in the period of investigation (February-March ... zonal one. There are stated the negative anomalies of the thermochaline characteristics in the subarea ... daily indeses of atmospheric circulation for the period February-March 1996, calculated average values ...
Meeting Document : WG-EMM-96/35 : Author(s): Polischuk, M.I., Shnar, V.N.
-
Stable isotope analysis of Southern Ocean fish tissue samples to investigate trophic linkages of Antarctic toothfish (Dissostichus mawsoni)
Atlantic, and sperm whales from the Gulf of Mexico. There was high variance in?15N and?13C values for each ... may be due to ontogentic changes in diet, and/or progressive consumption of larger individuals of the ... same species with age. There was significant residual variance in?15N and?13C values for each of the ... not explained by the isotopic composition of prey sampled in that area. This may be due to: (1 ...
Meeting Document : WG-EMM-07/19 : Author(s): M.H. Pinkerton, S. Bury, S.M. Hanchet and D. Thompson (New Zealand)
-
Conflict or co-existence? Foraging distribution and competition for prey between Adélie and chinstrap penguins
penguins. Adélie penguins foraged significantly farther (mean 100 km) from the colony than chinstrap ... penguins (mean 58 km) in 2000 but not in 2001 (mean 58 km and 35 km respectively). In 2000, the breeding ... success of Adélie penguins was 51% lower than the long-term mean compared to 15% lower in chinstrap ... penguins. Adélie penguins foraged significantly farther (mean 100 km) from the colony than chinstrap ...
Meeting Document : WG-EMM-02/15 : Author(s): A.S. Lynnes, K. Reid, J.P. Croxall and P.N. Trathan (United Kingdom)
-
Cruise Report – Research Project: Demersal finfish distribution, abundance, and their biological characteristics in Statistical Subareas 48.1 (northern area) and 48.2
). As a result of nearing the maximum research catch specified in Subarea 48.1 (95% of authorized ... proposed stations completed (n=13). In Subarea 48.2, we were unable to complete the planned number of ... contribute to knowledge regarding bathymetry and distribution of the concentrations of fish and krill in the ... marks registered in the echo sounders. One of the mid-water hauls identified a shoal of icefish (33.6 t ...
Meeting Document : WG-SAM-18/25 : Author(s): Delegation of Chile
-
Research results from the SPRFMO exploratory fishing program for Antarctic toothfish 2016 and 2017
catch rates of post-spawning Antarctic toothfish, similar in magnitude to catch rates in the north ... that Antarctic toothfish also spawn north of 60° south latitude in the Southern Ocean. Biological ... and analyses from the northern regions of CCAMLR Subarea 88.1, indicative of spawning in that region ... toothfish in the South Pacific Regional Fisheries Management Organisation (SPRFMO) Convention Area during ...
Meeting Document : WG-FSA-18/39 : Author(s): J.M. Fenaughty, M. Cryer and A. Dunn
-
Diet variability and reproductive performance of macaroni penguins (Eudyptes chrysolophus) at Bird Island, South Georgia
(Euphausia superba) was the main prey in 17 out of 22 years. Amphipods (Themisto gaudichaudii) were the main ... . frigida) in 2000. There was no clearly dominant prey group in 1999. The five-year average proportion of E ... frequency occurrence of T. gaudichaudii both increased with a decreasing proportion of E. superba in the ... gross energy content of individual meals was often above average in years when the diets contained fewer ...
Meeting Document : WG-EMM-12/17 : Author(s): C.M. Waluda, S.L. Hill, H.J. Peat and P.N. Trathan (United Kingdom)
-
Uncertainty in standard sphere calibrations
Abstract: In fisheries acoustics, the standard sphere method of echosounder calibration is most ... variations in the system gains of 0.3, 0.2 and 1.5 dB, respectively. Additionally, system gain values ... commonly used (Johannesson and Mitson, 1983; Simmonds et al., 1984). To investigate the uncertainty in the ... method, a series of experiments were conducted in a deep tank (Demer and Hewitt, 1993). Results indicated ...
Meeting Document : WG-EMM-95/70 : Author(s): Demer, D.A., Hewitt, R.P.
-
Report on fish by-catch during exploratory fishing activities in Division 58.4.3a (Elan Bank) between 2008 and 2018
-annual variations in bycatch patterns, spatial distribution and biological parameters of the main bycatch ... autolines operated. Skate bycatch was higher in shallower waters (900m-1200m) and the frequency of hauls ... post-released survival rate, we cannot rule out the fact that the use of longlines, and in particular ... Abstract: We report on objective 2 “inform estimations of the distribution, relative abundance ...
Meeting Document : WG-FSA-2019/56 : Author(s): C. Péron, C. Chazeau, N. Gasco and F. Massiot-Granier