Effects of an invasive crayfish on trophic relationships in north‐temperate lake food webs
In this study, we explore how the invasive rusty crayfish Orconectes rusticus, a benthic omnivore, affects benthic macroinvertebrates, as well as the broader consequences for ecosystem‐level trophic flows in terms of fish benthivory and trophic position (TP). We expected crayfish to decrease abundance of benthic macroinvertebrates, making most fish species less reliant on benthic resources. We expected crayfish specialists (e.g. Lepomis sp. and Micropterus sp.) to increase their benthic dependence.
Nilsson, E., Solomon, C. T., Wilson, K. A., Willis, T. V., Larget, B., & Zanden, M. J. (2011). Effects of an invasive crayfish on trophic relationships in north-temperate lake food webs. Freshwater Biology, 57(1), 10-23. doi:10.1111/j.1365-2427.2011.02688.x