Search results
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Net escapement of Antarctic krill in trawls
in 2012) entitled Net Escapement of Antarctic krill in Trawls (NEAT). The study will include a morphology ... based mathematical modeling (FISHSELECT) of different sex and maturity groups of Antarctic krill ... selective properties for krill in different trawls. Author(s): B.A. Krafft (Norway), L.A. Krag, B. Herrmann ... (Denmark), A. Engås, S. Nordrum and S. Iversen (Norway) Title: Net escapement of Antarctic krill in trawls ...
Meeting Document : WG-EMM-12/24 : Author(s): B.A. Krafft (Norway), L.A. Krag, B. Herrmann (Denmark), A. Engås, S. Nordrum and S. Iversen (Norway)
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WILL KRILL FARE WELL UNDER SOUTHERN OCEAN ACIDIFICATION?
Abstract: Antarctic krill embryos and larvae were experimentally exposed to 380 (control), 1000 ... of krill. No significant effects were detected on embryonic development or larval behaviour at 1000 μatm ... water pCO2 could rise up to 1400 μatm in krill’s depth range under the IPCC IS92a scenario by the year ... -response relationship for krill developmental and later stages, in order to predict the possible fate ...
Meeting Document : WG-EMM-11/P6 : Author(s): S. Kawaguchi, H. Kurihara, R. King, L. Hale, T. Berli, J.P. Robinson, A. Ishida, M. Wakita, P. Virtue, S. Nicol and A. Ishimatsu
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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 ... –frequency distribution of krill in the Scotia Sea using samples from the South 13 Shetland Islands and South ... is apparent that strong recruitment of the smallest size class of krill is represented in both populations ... simultaneously. It appears 19 that first-year krill are advected into different regions of the Scotia Sea where ...
Meeting Document : WG-EMM-02/16 : Author(s): K. Reid, E.J. Murphy (United Kingdom), V. Loeb and R.P. Hewitt (USA)
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A spatial multi-species operating model (SMOM) of krill–predator interactions in small-scale management units in the Scotia Sea
Abstract: A Spatial Multi-species Operating Model (SMOM) of the underlying krill-predator-fishery ... of the precautionary catch limit for krill among 15 small-scale management units (SSMUs) in the Scotia Sea to reduce ... the KPFM. The model includes all 15 SSMUs and uses an annual timestep to update the numbers of krill ... replicates to explore different hypotheses such as that related to the transport of krill. The SMOM developed ...
Meeting Document : WG-EMM-06/12 : Author(s): É. Plagányi and D. Butterworth (South Africa)
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Some components of uncertainty in the CCAMLR 2000 acoustical survey of krill
acoustical estimate of krill abundance in FAO statistical area 48. The variance in system calibration ... absorption, and beam characteristics. Uncertainty in krill target strength (TS) was estimated using ... a distorted wave born approximation model of krill TS, fitted with measured distributions of animal lengths ... frequency measurements provided independent estimates of the krill biomass. The overall variance (1 1.33 ...
Meeting Document : WG-EMM-00/49 : Author(s): D.A. Demer (USA)
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QUANTIFYING MOVEMENT BEHAVIOUR OF VESSELS IN THE ANTARCTIC KRILL FISHERY
Abstract: Ten years of recent finescale haul-by-haul krill data were used to characterize ... the behaviour of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed ... a generalised fishery model. Updates for some of the parameters for the krill fishery model suggested in late ... quality year-round data on all vessels participating in the krill fishery to assist in interpreting ...
Meeting Document : WG-EMM-09/P05 : Author(s): S. Kawaguchi and S.G. Candy
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Estimating density and biomass of Antarctic krill (Euphausia superba) around South Shetland using the 2-dB difference method
Abstract: The distribution and abundance of krill aggregation inhabiting the Subarea 48.1, which ... in 2016 and 38 and 200 kHz from March 6 to 14 and 38 and 120 kHz on April 27 and May 5 in 2017. Krill were ... identification) based on data from a transect-based survey. The weighted krill density and biomass were estimated ... thousand tonnes (CV=31.4%) applying S v difference-3.0-13.8 dB in 2017, respectively. Krill density ...
Meeting Document : SG-ASAM-18/08 : Author(s): S. Choi, K. Lee and D. An
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Development of methods relevant to feedback management (FBM) for the krill fishery
Protected Area (MPA) development in CCAMLR Planning Domain 1 encompasses the major krill fishing grounds ... . Thus, data supporting FBM as an integral part of the broader management strategies of the krill ... of krill density, distribution, availability and predator needs. A future developed FBM system ... with finer-scale knowledge of krill predator feeding strategies and updated through specific scientific ...
Meeting Document : WG-EMM-18/08 : Author(s): B.A. Krafft, A. Lowther, G. Macaulay, M. Chierici, M. Biuw, A. Renner, T.A. Klevjer, R. Øyerhamn, C.A. Cárdenas, J. Arata, A. Makhado, C. Reiss and O.A. Bergstad
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Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48
limit on krill (Euphausia superba) in Statistical Area 48. The measure also asks the Scientific ... or local areas. Nine alternative methods of determining subarea or local area krill catch limits ... . Alternatives based on continental shelf area, simple pulse fishing, and krill surveys are not biologically ... : Alternative methods for determining subarea or local area catch limits for krill in Statistical Area 48 ...
Meeting Document : WG-KRILL-92/16 : Author(s): G. Watters and R.P. Hewitt (USA)
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Dynamic model of krill Euphausia superba swarm
, using the 38 and 120 kHz BioSonics dual-beam hydroacoustic system, numerous swarms of krill Euphausia ... (Okubo, 1980, 1986). It was assumed that the above mentioned model can also be applicable to krill swarms ... . Using physical parameters of the krills' swarm (density, length), the above assumption was verified ... . It was found that the vertical density pattern of krills' swarm, with a mean density of up to 1000 ...
Meeting Document : WG-EMM-95/68 : Author(s): Kalinowski, J., Azzali, M.