Subjects: NATIVE fishes; TROPHIC cascades; BIOLOGICAL invasions
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Subjects: WATER buffalo; FRESHWATER fishes; STABLE isotope analysisONTARIO
Subjects: PLANTS; FIRE; CHEMISTRY
Subjects: RIVER ecology; FOOD chains; HYDROLOGIC cycle
Subjects: SALMON; MARINE ecology; BIOTIC communitiesCOLUMBIA River Watershed