“…Non-native species can alter the trophic position of native species and promote trophic dispersion of food webs, thereby changing ecosystem functioning (Britton, Davies, & Harrod, 2010;Cucherousset, Blanchet, & Olden, 2012) and having dramatic consequences on ecosystem processes (Matsuzaki, Sasaki, & Akasaka, 2013). For example, invasive catfish were shown to reduce periphyton biomass, alter detrital decomposition rates and change the N:P ratio in a subtropical river, the San Marcos River, Texas, USA (Datri, Pray, Zhang, & Nowlin, 2015).…”