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How trophic dynamics of adult Antarctic krill Euphausia superba responses to the condition of no ice in the water during the winter: a case study at South Georgia?
Abstract: Understanding the variation in krill diet during winter is crucial to elucidate the ... overwintering of krill in the Southern Ocean. The information on trophic variation of krill under ice-free ... waters during the winter can also provide the insight for understanding the response of krill to global ... diet of adult krill with size and month during the winter season (June to September 2016) at the South ...
Meeting Document : WG-EMM-2019/P04 : Автор(ы): G.P. Zhu, H.T. Zhang, B. Deng and Q.Y. Yang
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Are penguins and seals in competition for Antarctic krill at South Georgia?
consumers of Antarctic krill. In recent years the population of fur seals has increased whereas that of ... macaroni penguins has declined. Both species feed on krill of similar size ranges, dive to similar depths ... ) satellite-tracking data to investigate the spatial separation of these two species whilst at sea during the ... breeding seasons of 1999 and 2000; b) diet data to assess potential changes in their trophic niches between ...
Meeting Document : WG-EMM-01/22 : Автор(ы): K.E. Barlow, I.L. Boyd, J.P. Croxall, I.J. Staniland, K. Reid and A.S. Brierley (United Kingdom)
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An assessment of the use of ocean gliders to undertake acoustic measurements of zooplankton: the distribution and density of Antarctic krill in the Weddell Sea
a thresholded schools analysis technique (SHAPES), and acoustic data were converted to krill density ... the distribution of Antarctic krill (Euphausia superba). During the glider missions, a research vessel ... taken to validate acoustic targets and parameterize acoustic models. Krill targets were identified using ... density estimates by up to 8-fold. Glider-based, echo-sounder–derived krill density profiles for the two ...
Meeting Document : WG-EMM-14/P02 : Автор(ы): D. Guihen, S. Fielding, E. Murphy, K. Heywood and G. Griffiths
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Considerations about managing the krill fishery at small spatial and temporal scales
managing the krill fishery at small temporal and spatial scales. We highlight that the devil is in the ... coastal areas. Closed coastal areas potentially protect near-shore krill-dependent predators from the ... that krill demand from a range of predators in near-shore coastal habitats may only be met through ... oceanographic flow and krill movement. Krill flux and krill behaviour remains key to increased understanding ...
Meeting Document : WG-EMM-2019/22 : Автор(ы): P.N. Trathan, V. Warwick-Evans and E. Young
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Observation on the interactions between marine mammals and mid-water krill trawl
Abstract: An observation on the interaction between marine mammal and krill midwater trawl was ... carried out onboard the Chinese krill fishing vessel Fu Rong Hai during the 2018/19 fishing season. The ... either. Simultaneous observation of krill swarms detected by the echosounder revealed a linkage between ... the behavior of the seal and the depth of krill swarms. It is speculated that when krill swarms were ...
Meeting Document : WG-FSA-2019/60 : Автор(ы): Y. Ying, G. Fan, X. Zhao, J. Zhang, X. Wang and J. Zhu
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A review and update of krill biomass trends in the South Shetland Islands, Antarctica, using the simplified stochastic wave born approximation
Abstract: Using data collected from US AMLR surveys conducted in the South Shetland Islands we ... review the trends in biomass, size frequency distribution and proportional recruitment of Antarctic Krill ... . Use of acoustic windows based on the range of krill size increases variability in biomass estimates ... and CV’s. These data suggest that future development focus on better propagating error through levels ...
Meeting Document : WG-EMM-06/32 : Автор(ы): C.S. Reiss and A.M. Cossio (USA)
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Precautionary management of the Antarctic krill fishery at small spatial scales in the context of regional climate variability: pros and cons of coastal buffers, closed areas and move-on rules
changes in the oceanic domain add to the complexity of managing the Antarctic krill fishery, particularly ... plausible that removals of even small amounts of krill could have reduced foraging opportunities. We discuss ... three management tools that could provide conservation benefits for near-shore krill-dependent species ... buffers closed to fishing during the penguin breeding season could reduce krill catches by approximately ...
Meeting Document : SC-CAMLR-XXXV/BG/14 : Автор(ы): Delegation of the United Kingdom
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Krill associated ecosystem studies in the western Indian Ocean sector of the Southern Ocean during austral summer
Abstract: India is getting prepared to take up studies on Krill associated ecosystem studies in ... Austral summer 2019-20. The proposed objectives are to to understand the distribution and biomass of krill ... in the western Indian Ocean Sector of the Southern Ocean, to relate larval/adult krill with the ... , N. Saravanane and M. Sudhakar Title: Krill associated ecosystem studies in the western Indian Ocean ...
Meeting Document : WG-EMM-2019/79 : Автор(ы): B.R. Smitha, H. Manjebrayakath, C.R. Asha Devi, N. Saravanane and M. Sudhakar
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A possible framework in which to consider plausible models of the Antarctic marine ecosystem for evaluating krill management procedures
Abstract: CCAMLR requires an assessment method for recommending a subdivision of the krill catch ... uncertainties in knowledge. This will be part of the management procedure governing the krill fishery. The ... for developing ecosystem models to evaluate krill management procedures. The first section of this ... influence the system and (iii) the fisheries. In developing these parts, the paper highlights areas that may ...
Meeting Document : WG-EMM-04/24 : Автор(ы): A. Constable (Australia)
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A critical issue for feedback management – how do we determine the level of functional overlap between krill fishing operations and penguin foraging activity?
Abstract: The spatial distribution of the Antarctic krill fishery in Subareas 48.1 to 48.3 has ... the fishery has expanded along the West Antarctic Peninsula, the cumulative numbers of krill-eating ... penguin colonies that are close to the fisheries footprint have also increased. As yet, it is not clear ... target the same type types of krill swarms in the same places). In contrast to Subarea 48.1, the fishery ...
Meeting Document : WG-EMM-15/11 : Автор(ы): P.N. Trathan, J.R.D. Silk, S.L. Hill (United Kingdom) and H.J. Lynch (USA)
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