Fish assemblage structure in relation to multiple stressors along the Saint John River, New Brunswick, Canada

The Saint John River is located on the mainland of eastern North America, forming in northern Maine-southeastern Quebec, and flows east and south through New Brunswick. Fish collections were conducted at sites located from 135 to 625 km above the mouth in 2000 and 2001. Methods development trials demonstrated that the highest success was achieved with a standardized netting protocol consisting of a combination of dusk seining, nighttime …