Long-term decline in krill stock and increase in salps within the Southern Ocean

@article{Atkinson2004LongtermDI,
  title={Long-term decline in krill stock and increase in salps within the Southern Ocean},
  author={Angus Atkinson and Volker Siegel and Evgeny A. Pakhomov and Peter Rothery},
  journal={Nature},
  year={2004},
  volume={432},
  pages={100-103}
}
Antarctic krill (Euphausia superba) and salps (mainly Salpa thompsoni) are major grazers in the Southern Ocean, and krill support commercial fisheries. Their density distributions have been described in the period 1926–51, while recent localized studies suggest short-term changes. To examine spatial and temporal changes over larger scales, we have combined all available scientific net sampling data from 1926 to 2003. This database shows that the productive southwest Atlantic sector contains >50… 
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