Physiographic Changes in Malpeque Bay, Prince Edward Island, Between 1845 and 1955, and the Possible Effects on Oyster Production

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Abstract
Recent changes in depth and coastal morphology were investigated by comparing old and new charts. All major changes seem to be the result of normal morphological evolution. Artificial changes, induced by human activity, seem to be relatively slight. It is widely believed that the decline of oyster populations was caused by silt deposition, and this in turn was produced by increased runoff after human occupation (farming, forestry, etc.). Silting has occurred in certain areas, but this was due to natural causes. The decline of oyster populations was therefore due either to natural causes or to factors other than silting.

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