Resultados de la búsqueda
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Classification of Southern Ocean krill and icefish echoes using Random Forests
. Antarctic krill, Euphausia superba, are typically identified through a combination of expert scrutiny of ... two or more echosounder frequencies. For commonly used frequencies, however, the differences for krill ... pelagic aggregations, which can be difficult to distinguish acoustically from large krill layers. Mackerel ... during surveys. The final random forest classified krill, icefish, and mixed aggregations of weak ...
Meeting Document : WG-EMM-16/23 : Autor(es): N. Fallon, S. Fielding and P. Fernandes
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Habitat partitioning in Antarctic krill: spawning hotspots and nursery areas
Abstract: Antarctic krill, Euphausia superba, have a circumpolar distribution but are ... ontogenetic life stages of krill (eggs, nauplii plus metanauplii, calyptopes, furcilia, juveniles, and adults ... krill densities can be high. To address these questions, we compiled larval krill density records and ... temperature suggest that krill associate with different habitats over the course of their life cycle. From the ...
Meeting Document : WG-EMM-2019/20 : Autor(es): F. Perry, A. Atkinson, S.F. Sailley, G.A. Tarling, S.L. Hill, C.H. Lucas and D.J. Mayor
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Demography of Antarctic krill in the Elephant Island area (Antarctic Peninsula) during austral summer 2001
Abstract: A net sampling survey was carried out for krill in an established standard station grid ... small size classes, one year old juvenile krill was found. Krill density was significantly higher than ... during the past years (between 198 and 230 krill 1000 m-3, i.e. between 40 and 46 m-2 or 11.3 g m-2). The ... high krill abundance and the high recruitment index reflect the end of a succession of years with poor ...
Meeting Document : WG-EMM-01/10 : Autor(es): V. Siegel (Germany), B. Bergström (Sweden), U. Mühlenhardt-Siegel (Germany) and M. Thomasson (Sweden)
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Distribution and size of Antarctic krill (Euphausia superba Dana) in the Polish commercial catches in the Atlantic sector of Antarctica in 1997–1999
Abstract: The distribution, density and length composition of krill in commercial concentrations ... krill concentration. The internal structure of the concentration was very diverse and the mean density ... varied from 11 to 31,370 specimens * m-3. At night, the krill concentrations were scattered throughout ... found in deeper waters. The size structure of the krill was diverse during all periods and in all areas ...
Meeting Document : WG-EMM-01/13 : Autor(es): E. Jackowski (Poland)
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Proposals for study of spatial-temporal dynamics of krill distribution for management applications
providing sufficient information with the aim of quantitative understanding regularities and trends of krill ... for krill stock in the Area 48. Proposals concerning scientific activity needed for resolving issues ... krill stocks management. Author(s): Delegation of Russia Title: Proposals for study of spatial ... -temporal dynamics of krill distribution for management applications Approval: Approved ...
Meeting Document : SC-CAMLR-XXX/BG/09 : Autor(es): Delegation of Russia
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South Orkney Island 2016 Antarctic krill and ecosystem monitoring
, krill demography and other macro zooplankton from trawl station work, krill predator sightings data as ... well as krill-experimental work carried out on onboard. Author(s): B.A. Krafft, G. Skaret, L.A. Krag ... , T. Rustand and R. Pedersen Title: South Orkney Island 2016 Antarctic krill and ecosystem monitoring ...
Meeting Document : WG-EMM-16/P03 : Autor(es): B.A. Krafft, G. Skaret, L.A. Krag, T. Rustand and R. Pedersen
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Diel vertical distribution of Antarctic krill around the South Shetland Islands in February 2019 and its potential effect on biomass estimation
Abstract: To address the potential effect of DVM behavior on krill biomass estimates, diel ... vertical distribution of krill swarms around the South Shetland Islands in Subarea 48.1 were analyzed based ... survey. Results show that more krill swarms were found in shallower depth at night than during daytime ... likely underestimate the krill density due to the shallow distribution pattern of the animal, which may ...
Meeting Document : SG-ASAM-2019/05 : Autor(es): X. Wang, X. Yu, J. Zhang and X. Zhao
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Adélie penguin foraging behaviour and breeding success in seasons of contrasting krill availability (Mawson Coast, Antarctica)
penguins at the Béchervaise Island CEMP site were compared between seasons of contrasting krill ... availability. Krill biomass estimates were derived from shipboard surveys carried out within the penguins ... ’ normal foraging range during the 2001 and 2003 breeding seasons. More than three times as much krill was ... of the krill survey. Chick mortality peaked during this period also. The findings illustrate the ...
Meeting Document : WG-EMM-03/44 : Autor(es): J. Clarke, M. Tierney, S. Candy, S. Nicol, L. Irvine and K. Kerry (Australia)
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Krill population dynamics in the Scotia Sea: variability in growth and mortality within a single population
Abstract: Understanding the demographics of Antarctic krill over large scales may be complicated ... length–frequency distribution of krill in the Scotia Sea using samples from the South 13 Shetland Islands ... of krill is represented in both populations simultaneously. It appears 19 that first-year krill are ... krill in the Antarctic occurs in a 21 relatively small number of regional fisheries within the Scotia ...
Meeting Document : WG-EMM-02/16 : Autor(es): K. Reid, E.J. Murphy (United Kingdom), V. Loeb and R.P. Hewitt (USA)
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Detection of growth zones in the eyestalk of the Antarctic krill Euphausia superba (Dana, 1852) (Euphausiacea)
Abstract: No reliable measures of age currently exist in the Antarctic krill, Euphausia superba ... for identifying growth zones. The krill was collected at the South Orkney Islands during January and ... the number of zones and body length. Further knowledge about molting process in the Antarctic krill ... and a verification of the ageing procedure from krill with a known age is needed before the number of ...
Meeting Document : WG-EMM-16/P02 : Autor(es): B.A. Krafft, M. Kvalsund, G. Søvik, E. Farestveit and A.-L. Agnalt