Research Article
Specific Niche Characteristics Facilitate the Invasion of an Alien Fish Invader in Boreal Streams
Table 3
Niche characteristics of the fish species in the 1994 survey. Brown trout (Salmo trutta) and brook trout (Salvelinus fontinalis) were divided into young-of-the-year (0+) and older fish (1+). Inertia: variability of species niche; OMI: outlying mean index or niche position; T1: species tolerance or niche breadth; and T2: residual tolerance. Percentages are from inertia for each species. Significances are from permutation test of the null hypothesis that a species’ OMI value is not different from that expected by chance (1000 permutations).
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