Interactions between phytoplankton, zooplankton and fish in a shallow, hypertrophic lake: a study of phytoplankton collapses in Lake Søbygård, Denmark

@article{Jeppesen2004InteractionsBP,
  title={Interactions between phytoplankton, zooplankton and fish in a shallow, hypertrophic lake: a study of phytoplankton collapses in Lake S\obyg{\aa}rd, Denmark},
  author={Erik Jeppesen and Martin S\ondergaard and Ole Sortkjo{\ae}r and Erik Mortensen and Peter H Kristensen},
  journal={Hydrobiologia},
  year={2004},
  volume={191},
  pages={149-164}
}
Since 1983 severe phytoplankton collapses have occurred 1–4 times every summer in the shallow and hypertrophic Lake Søbygård, which is recovering after a ten-fold decrease of the external phosphorus loading in 1982. In July 1985, for example, chlorophyll a changed from 650 µg l−1 to about 12 µg 1−1 within 3–5 days. Simultaneously, oxygen concentration dropped from 20–25 mg O2l−1 to less than 1 mg O2l−1, and pH decreased from 10.7 to 8.9. Less than 10 days later the phytoplankton biomass had… CONTINUE READING
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