Search results
-
Winter habitat selection by Antarctic krill will increase krill-predator-fishery interactions during ice free years
). For Antarctic krill (Euphausia superba), a key forage species (Laws 1977; Smetacek and Nicol 2005) and a target ... ; Atkinson et al. 2004) and is likely to increase krill-predator-fishery interactions during autumn ... the Antarctic Peninsula in winters with contrasting ice conditions provide the first acoustic estimates of krill ... biomass, habitat use, and association with top predators to examine these likely interactions. Krill were ...
Meeting Document : WG-EMM-15/05 : Author(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)
-
Investigations of krill transport factors in the local areas in the Scotia Sea: variability of krill distribution in the fishing grounds under the transport impact
Georgia West), analysing variability of krill transport and distribution characteristics in the local ... in each study areas were accompanied with pulsatory pattern of krill transport, i.e. krill transported ... value (in our case, CV biomass=57%) is important, but also the observed changes in krill aggregation ... patterns forming the transported biomass portions (in our case, CV swarms/mile 2 =63%). Therefore, krill ...
Meeting Document : WG-EMM-07/17 : Author(s): S.M. Kasatkina and V.N. Shnar (Russia)
-
Preliminary modelling of potential climate-change impacts on krill and a krill-dependent predator in CCAMLR Subareas 48.1 to 48.3
will affect krill resources and the marine ecosystem in Antarctic waters is critical. Previous research has ... demonstrated possible climate change impacts on krill habitat and growth. In this preliminary study, we ... assessed the potential consequences of these impacts for both the krill stock and its dependent predators ... using a peer-reviewed krill-predator-fishery ecosystem dynamics model. Initial results demonstrate ...
Meeting Document : WG-EMM-16/53 : Author(s): E.S. Klein, S.L. Hill, G.M. Watters and J.T. Hinke
-
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 ... 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 was distributed ...
Meeting Document : WG-EMM-08/35 : Author(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)
-
KRILL CATCHES INDICATE THE IMPACT OF THE EL-NIŇO – SOUTHERN OSCILLATION RELATED PROCESSES ON THE DISTRIBUTION OF KRILL BIOMASS BETWEEN SUBAREAS OF THE ATLANTIC SECTOR OF ANTARCTIC
different climate oceanographic regimes and its influence on krill biomass into the discussion of krill ... fishery management issues. Krill catch data in Subareas 48.1, 48.2 and 48.3 are compared to the AMLR ... Programme findings as described by Loeb et al. (2009). It is shown that krill fisheries statistics may ... on the inter-annual variation of krill biomass distribution between the major statistical subareas ...
Meeting Document : WG-EMM-09/47 : Author(s): V. Spiridonov (Russia)
-
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 catches ... as this is the only time of year when spatio-temporal overlaps between macaroni penguin foraging and the krill fishery ... during the winter period. We combined these to produce a surface of the tonnes of krill consumed which ... could be compared directly with the spatial distribution of the tonnes of krill caught by the fishery ...
Meeting Document : WG-EMM-14/02 : Author(s): N. Ratcliffe, S.L. Hill, I.J. Staniland, R. Brown, S. Adlard, C. Horswill and P.N. Trathan (United Kingdom)
-
ANALYSIS OF VARIABILITY OF KRILL SIZE AND FISH BY-CATCH IN JAPANESE KRILL FISHERY BASED ON SCIENTIFIC OBSERVER DATA
Abstract: To investigate spatio-temporal variability of krill body length and number of bycatch ... fish, observer data sets on Japanese krill fishery from 1995 to 2008 were analyzed by using ... dynamics from observation error caused by the fishery activity and individual observation. In both krill ... variability of krill population structure and a difficulty in predicting krill population dynamics. Variances ...
Meeting Document : WG-EMM-11/39 : Author(s): T. Okuda and M. Kiyota (Japan)
-
The krill distribution in waters around the South Shetland Islands: Preliminary results from an acoustic survey conducted by a Chinese krill fishing vessel in December 2013
data for the estimation of krill stock and its management. In December 2013, a trial acoustic survey ... was conducted by the Chinese krill fishing vessel ‘FURONGHAI' in waters around the South Shetland Islands ... . Krill was found in most part of the survey area. The mean Sv of krill swarm tend to be higher in inshore ... . The majority of the krill swarms were found in the upper 100 m with a thickness less than 30 ...
Meeting Document : WG-EMM-14/47 : Author(s): X. Wang, X. Zhao, G. Qi, T. Zuo, J. Zhu, J. Zhang and X. Li (People’s Republic of China)
-
Modelling Movement of Antarctic Krill (MMAK): the importance of retention, dispersal and behaviour for krill distribution
Abstract: Effective management of the Antarctic krill (Euphausia superba, hereafter krill ... ) fishery requires an understanding of the controls on the distribution and abundance of krill ... . Particularly important are the pathways and timescales of movement and retention affecting krill distribution ... of the regional and local-scale processes that influence the distribution of krill in CCAMLR Area 48. Modelling ...
Meeting Document : WG-EMM-17/31 : Author(s): S. Thorpe, E. Young and E. Murphy
-
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 north ... gathered in the boxes in austral summers 1996 – 2000. Krill densities had previously been determined ... 1600 krill density estimates per box. The MaxEnt technique uses a Bayesian approach to infer the most ...
Meeting Document : WG-EMM-02/36 : Author(s): M.H. Wafy, A.S. Brierley, S.F. Gull and J.L. Watkins (United Kingdom)