Predictions are made pertaining to the status of salmonid communities in North American oligotrophic lakes about the year 2000. It is assumed that man-induced effects such as eutrophication, exploitation, and introduction of exotic species will continue to increase at an exponential rate. The influence of forest fires, domestic and industrial water pollution, road development, pulp mills, mines, pipe-lines, air pollution, agriculture, power development, summer resorts, angling, commercial and subsistence fishing, diversions and introductions of both salmonids and other species is discussed. It is concluded that at the present rate of interference of the oligotrophic environment by man, salmonid communities will be reduced to insignificant levels within the next 30 years.
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Ryder et al. (1972) studied this question.