Stable isotopes show food web changes after invasion by the predatory cladoceran Cercopagis pengoi in a Baltic Sea bay

@article{Gorokhova2004StableIS,
  title={Stable isotopes show food web changes after invasion by the predatory cladoceran Cercopagis pengoi in a Baltic Sea bay},
  author={Elena Gorokhova and Sture Hansson and Helena H{\"o}glander and Christian Marc Andersen},
  journal={Oecologia},
  year={2004},
  volume={143},
  pages={251-259}
}
Cercopagis pengoi, a recent invader to the Baltic Sea and the Laurentian Great Lakes, is a potential competitor with fish for zooplankton prey. We used stable C and N isotope ratios to elucidate trophic relationships between C. pengoi, zooplankton (microzooplankton, 90–200 μm, mostly copepod nauplii and rotifers; mesozooplankton, >200 μm, mostly copepods), and zooplanktivorous fish (herring, size range 5–15 cm and sprat, 9–11 cm) in a coastal area of the northern Baltic Sea. The isotope ratios… CONTINUE READING
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