Résultats de la recherche
Distribution patterns and biomasses of Antarctic krill (Euphausia superba) and ice krill (E. crystallorophias) with note on distribution of Antarctic minke whales (Balaenoptera bonaerensis) in the Ross Sea in 2005
Abstract: Distribution patterns and biomasses of Antarctic and ice krill in the Ross Sea in ... austral summer in 2005 were studied using a multi-disciplinary survey data set combining cetacean, krill ... obtained from samples of RMT hauls and stomach contents of Antarctic minke whales. Ice krill was ... distributed on the continental shelf region (shallower than 1000m water depth). In contrast, Antarctic krill ...
Meeting Document : WG-EMM-08/35 : Auteur(s): H. Murase, H. Yasuma, R. Matsukura, Y. Takao, K. Taki, T. Hayashi, T. Yabuki, T. Tamura, K. Konishi, K. Matsuoka, K. Miyashita, S. Nishiwaki and M. Naganobu (Japan)
Do krill fisheries compete with macaroni penguins? Spatial overlap in prey consumption and krill catches during winter
, the macaroni penguin, and the krill fishery by examining the spatial overlap in prey consumption and ... and the krill fishery can occur. We tracked adult macaroni penguins from a colony in South Georgia ... krill consumed which could be compared directly with the spatial distribution of the tonnes of krill ... krill during the winter which is similar to the 98,431 tonnes caught by fisheries over the same period ...
Meeting Document : WG-EMM-14/02 : Auteur(s): N. Ratcliffe, S.L. Hill, I.J. Staniland, R. Brown, S. Adlard, C. Horswill and P.N. Trathan (United Kingdom)
Abstract: The RAPID-KRILL project is funded by the Antarctic Wildlife Research Fund to develop at ... , A. Ariza, R. Blackwell, G. Skaret and X. Wang Title: Update: Rapid unsupervised automated krill ... density estimation from fishing vessels (RAPID-KRILL) Approval: Approved Secretariat Workflow Status ...
Meeting Document : WG-EMM-18/11 : Auteur(s): S. Fielding, A. Ariza, R. Blackwell, G. Skaret and X. Wang
Features of spatial and temporally distribution patterns of krill flux in the Scotia Sea: some comments on the development of a krill fishery management in Area 48.
Abstract: The spatial variability of krill flux in the Scotia Sea calculated by using the ... distribution of krill density, water flow intensity (m 3 /s) and krill biomass (g/m3) transported by water flow ... to the Scotia Sea, were a subject of study. It is clearly illustrated that the geostrophic krill ... flux in the Scotia Sea requires both favorable dynamic conditions and availability of krill transported ...
Meeting Document : WG-EMM-18/21 : Auteur(s): S. Kasatkina, V. Shnar and A. Malyshko
MaxEnt reconstructions of krill distribution and estimates of krill density from acoustic surveys at South Georgia 1996–2000
Abstract: We present Maximum Entropy (MaxEnt) reconstructions of krill distribution and estimates ... of mean krill density within two survey boxes of dimensions 80 km x 100 km to the north east and ... gathered in the boxes in austral summers 1996 – 2000. Krill densities had previously been determined at ... 1600 krill density estimates per box. The MaxEnt technique uses a Bayesian approach to infer the most ...
Meeting Document : WG-EMM-02/36 : Auteur(s): M.H. Wafy, A.S. Brierley, S.F. Gull and J.L. Watkins (United Kingdom)
Krill distribution pattern due to water structure and dynamics near the South Sandwich Islands in January–February 2000 (Krill Synoptic Survey 2000)
krill distribution is carried out. There are determined three krill groups which differ each other by ... length frequency, maturity stages and waters inhabited. Distribution of the 1st krill group (juveniles 25 ... concentration of krill of the 3rd group (50-56 mm) transported there by ACC waters. Such concentrated schools ... are transported to South from East of archipelago, and may be mixed with krill of the 1st group. It is ...
Meeting Document : WG-EMM-00/33 : Auteur(s): V. Sushin, P. Chernyshkov, V. Shnar, F. Litvinov and K. Shulgovskiy (Russia)
A model at the level of the foraging trip for the indirect effects of krill (Euphausia superba) fisheries on krill predators
krill (Euphausia superba) predators, using the Adelie penguin (Pygoscelis adeliae) as a model organism ... . The model involves: (i) the description of the biomass and spatial distribution of krill; (ii) the ... effects of the fishery on the krill; (iii) the description of penguin breeding; and (iv) the indirect ... biomass of krill appropriate for the predators (and the fishery) fluctuates from one year to the next ...
Meeting Document : WG-EMM-98/48 : Auteur(s): M. Mangel and P.V. Switzer (USA)
Modelling growth and reproduction of Antarctic krill: implications of spatial and temporal trends in temperature and food for ecosystem-based management of krill fisheries
Abstract: Errors in the growth model used in stock assessments of Antarctic krill, specifically ... higher rates of growth than occur in reality, could inadvertantly lead to over-exploitation of the krill ... population and cause impacts on krill predators. We review the three classes of models available for ... modelling krill growth – the von Bertalanffy class, the moult-cycle class based on measures of the duration ...
Meeting Document : WG-EMM-12/38 : Auteur(s): A.J. Constable and S. Kawaguchi (Australia)
Winter habitat selection by Antarctic krill will increase krill-predator-fishery interactions during ice free years
Antarctic krill (Euphausia superba), a key forage species (Laws 1977; Smetacek and Nicol 2005) and a target ... et al. 2014; Atkinson et al. 2004) and is likely to increase krill-predator-fishery interactions ... estimates of krill biomass, habitat use, and association with top predators to examine these likely ... interactions. Krill were virtually absent in offshore waters of the Drake Passage during all three winters ...
Meeting Document : WG-EMM-15/05 : Auteur(s): C.S. Reiss, A. Cossio, C.D. Jones, A. Murray, G. Mitchell, J. Santora, K. Dietrich, E. Weiss, C. Gimpel, J. Walsh and G.M. Watters (USA)
Why does it necessary to consider krill flux for developing the feedback management strategy for krill fishery in the Area 48?
Abstract: The authors discussed the necessity to investigate krill flux for estimating the local ... . Estimates of krill flux factors in Subarea 48.3 based on the Soviet/Russian scientific observations from ... it necessary to consider krill flux for developing the feedback management strategy for krill fishery ...
Meeting Document : WG-EMM-15/24 : Auteur(s): S. Kasatkina and V. Shnar (Russia)