Top-down control in a detritus-based food web: fish, shredders, and leaf breakdown

@article{Ruetz2002TopdownCI,
  title={Top-down control in a detritus-based food web: fish, shredders, and leaf breakdown},
  author={Carl R. Ruetz and Raymond M. Newman and Bruce Vondracek},
  journal={Oecologia},
  year={2002},
  volume={132},
  pages={307-315}
}
We tested the hypothesis that fish decrease shredder abundance in leaf packs, thereby reducing leaf breakdown rates. Our goal was to test for the occurrence of a trophic cascade in a detritus-based food web. Willow leaves (Salix spp.) were fastened into leaf packs and placed into cages (13×13×13 cm) in Valley Creek, Minnesota, USA. Fish were excluded from leaf packs that were placed in cages with mesh on all sides, whereas open control cages allowed fish access to leaf packs. We collected leaf… CONTINUE READING
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