Changes in water chemistry can disable plankton prey defenses.

@article{Riessen2012ChangesIW,
  title={Changes in water chemistry can disable plankton prey defenses.},
  author={Howard P. Riessen and Robert Dallas Linley and Ianina Altshuler and Max Rabus and Thomas S{\"o}llradl and Hauke Clausen-Schaumann and Christian Laforsch and Norman David Yan},
  journal={Proceedings of the National Academy of Sciences of the United States of America},
  year={2012},
  volume={109 38},
  pages={15377-82}
}
The effectiveness of antipredator defenses is greatly influenced by the environment in which an organism lives. In aquatic ecosystems, the chemical composition of the water itself may play an important role in the outcome of predator-prey interactions by altering the ability of prey to detect predators or to implement defensive responses once the predator's presence is perceived. Here, we demonstrate that low calcium concentrations (<1.5 mg/L) that are found in many softwater lakes and ponds… CONTINUE READING
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