Résultats de la recherche

1. On dispersion of different pelagic organisms, forming Antarctic backscattering in South Sandwich subarea during January–February 2000

   distribution nectonic organisms, non-krill zooplanctonic fraction and krill as detected my multi-frequency ... layers as follows: krill predominatingly contributes to the antarctic pelagic community within proving ... distributed in the Weddell Sea waters. Though krill and zooplankton major biomasses are concentrated in upper ... species. A comparative analysis of mean stratum Sa values obtained for krill and myctophid fishes ...

   Meeting Document : WG-EMM-01/61 : Auteur(s): S.M. Kasatkina and A.P. Malyshko (Russia)

2. Importance of myctophid fish distributions for formation of foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island

   diurnal and overnight foragers during Leg II. Highest krill (Euphausia superba) densities regularly ... the offshore/slope regions over on the shelf: (1) krill were present near the surface throughout the ... day so that only shallow diving was required to catch krill even in the day time; (2) krill tend to be ... abundant areas for krill) over the shelf region (more abundant areas for krill). Author(s):  Bengtson, J.L ...

   Meeting Document : WG-EMM-95/87 : Auteur(s): Bengtson, J.L., Kawaguchi, S., Jansen, J.K., Takao, T., Meyer, W.R., Baba, N., Hiruki, L.M., Boveng, P., Cameron, M.F., Ogishima, T., Ichii, T., Naganobu, M.

3. A study on calibration for commercial echosounder using the bottom backscattering strength from a fishing vessel near the South Shetland Islands in Antarctic

   Abstract:  In this study, we calibrated a commercial echosounder (ES70) installed on a krill ... fishing vessel to use it in estimating biomass of Antarctic krill (Euphausia superba). The method of ... . 38kHz and 120kHz were used for the calibration, and krill swarm signals, obtained from multi frequencies ... calibration by bottom backscattering strength, since the proportion of krill swarm signals within 2 dB < S ...

   Meeting Document : WG-EMM-16/61 : Auteur(s): Delegation of the Republic of Korea

4. A study on calibration for commercial echosounder using bottom backscattering strength in Antarctic

   Abstract:  In this study, we calibrated a commercial echosounder (ES70) installed on a krill ... fishing vessel to use it in estimating biomass of Antarctic krill (Euphausia superba). The method of ... . 38kHz and 120kHz were used for the calibration, and krill swarm signals, obtained from multi frequencies ... calibration by bottom backscattering strength, since the proportion of krill swarm signals within 2 dB < S ...

   Meeting Document : SG-ASAM-17/P01 : Auteur(s): S.-G. Choi, H. Lee, K. Lee and J. Lee

5. Approaches to data collection and analysis for detecting and quantifying functional overlap at the scale of the individual vessell

   between the krill fishery and pelagic krill predators has been discussed throughout the SC-CAMLR Working ... interactions and competition between the krill fishery and krill-dependent predators during fishing operations ... , and b) how krill acoustic surveys and transects could also be used to provide data for wider ecosystem ...

   Meeting Document : WG-EMM-18/33 : Auteur(s): M. Söffker and N. Gasco

6. Reconciling fisheries with conservation: three examples from the Southern Ocean

   CCAMLR with regard to fisheries on Antarctic krill (Euphausia superba), mackerel icefish ... a unique set of circumstances and unresolved concerns. While the current fishery for krill is small ... land-breeding krill predators may pose a threat as well as those posed by the broader-scale influence ... of climatic cycles and trends on krill production. Management of the fishery on mackerel icefish ...

   Meeting Document : WG-EMM-04/48 : Auteur(s): R.P. Hewitt (USA), I. Everson (United Kingdom) and C.D. Jones (USA)

7. Analysis of the diet of Champsocephalus gunnari in Subarea 48.3, in late summer of years 1994–97, Dr E. Holmberg surveys

   ;Q" (%) methods. Krill (Euphausia superba) followed by the amphipod hyperiid Themisto ... years of krill scarcity and fish, was only occasional or in negligible amounts, showing interannual ... of krill in the Statistical Subarea 48.3 in the period investigated can be defined as low in 1944 ... , equivalent to those years of krill scarcity; intermediate in 1995, below the historical years of high ...

   Meeting Document : WG-FSA-97/48 : Auteur(s): Barrera-Oro, E., Marschoff, E., Casaux, R.

8. Linking predator and prey behaviour: contrasts between Antarctic fur seals and macaroni penguins at South Georgia

   are the two main land-based krill Euphausia superba consumers in the northern Scotia Sea. Using a ... these sympatric top predators during the austral summer and autumn of 2004. Krill availability derived ... from acoustic surveys was low during summer, increasing in autumn. During the breeding season, krill ... Electrona antarctica), with krill (33%) and amphipods (Themisto gaudichaudii; 21%) also occurring. When ...

   Meeting Document : WG-EMM-10/P07 : Auteur(s): C.M. Waluda, M.A. Collins, A.D. Black, I.J. Staniland and P.N. Trathan

9. Inter-annual variation in condition index of the mackerel icefish Champsocephalus gunnari

   . High condition indices, indicative of good feeding conditions, were present when krill were abundant in ... the region. Years when krill were scarce and condition index was consequently low, were consistent ... with years when indices from land-based krill predators also indicated krill were scarce. Author(s ...

   Meeting Document : WG-EMM-96/43 : Auteur(s): Parkes, G., Everson, I., Kock, K.-H.

10. Short note on time series of Drake Passage Oscillation Index (DPOI) and its influence on environmental variability

    and density of Antarctic krill (Euphausia superba DANA) is important as variability in krill stocks ... krill recruitment and density in the Antarctic Peninsula area with an environmental factor; strength of ... Oscillation Index (DPOI). They found significant correlations between krill recruitment and DPOI. Additionally ... on the variability of oceanic condition and thus for Antarctic krill ecosystem. Author(s):  M ...

    Meeting Document : WG-EMM-07/14 : Auteur(s): M. Naganobu and K. Kutsuwada (Japan)

Pages