Interspecific competition increases local extinction rate in a metapopulation system

@article{Bengtsson1989InterspecificCI,
  title={Interspecific competition increases local extinction rate in a metapopulation system},
  author={Jan Bengtsson},
  journal={Nature},
  year={1989},
  volume={340},
  pages={713-715}
}
  • J. Bengtsson
  • Published 1 August 1989
  • Environmental Science
  • Nature
THE importance of interspecific competition for the distribution and abundance of organisms has been hotly debated during the last decade1-7. Although many field experiments have shown effects of interspecific competition on abundance and reproduction1,3, there is no unequivocal experimental evidence that interspecific competition can influence rates of local extinction in the field. Here I report that in a long-term field experiment with artificial rockpools, interspecific competition between… 

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STRONG INBREEDING DEPRESSION IN A DAPHNIA METAPOPULATION

The presence of strong inbreeding depression in a rockpool metapopulation of the planktonic freshwater crustacean Daphnia magna, which reproduces by cyclical parthenogenesis, suggests that if rockpool populations are inbred, hybrid offspring resulting from crosses between immigrants and local genotypes might have a strong selective advantage.
...

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