Publisher's Synopsis
Excerpt from Some Considerations on the Distribution of Fishes in Ontario
The extent of the area occupied by living forms is the resultant of two primary forces - geological and ecological, acting individually or in conjunction with one another, one sometimes assisting the other towards its goal, sometimes working in an opposing direction. Barriers raised by one factor are frequently capable of counteracting the distributional channels offered by the other. The relationship of the distribution of fishes in Ontario to the factors mentioned forms a significant illustration of the complications underlying distributional problems. To describe distribution is one matter, to explain it, something very different. This paper is an attempt to describe the distribution of Ontario fishes and to offer feasible explanations for their dispersal.
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