Trophic cascades in streams: effects of nutrient enrichment on autotrophic and consumer benthic communities under two different fish predation regimes

@inproceedings{Biggs2000TrophicCI,
  title={Trophic cascades in streams: effects of nutrient enrichment on autotrophic and consumer benthic communities under two different fish predation regimes},
  author={Barry J. F. Biggs and Steven N. Francoeur and Alexander D. Huryn and Roger G. Young and Christopher J. Arbuckle and Colin R. Townsend},
  year={2000}
}
We tested the hypothesis that differences in top-level predators could mediate the importance of top-down versus bottom-up forces in stream food chains using three streams dominated by Galaxias (fish native to New Zealand) and three dominated by brown trout (Salmo trutta) (an introduced species). These two fish species have quite different predation strategies and energetic requirements. Periphyton in the Galaxias streams formed relatively low biomass (indicative of high invertebrate grazing… CONTINUE READING

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