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Abstract
Forest decline in eastern Canada was particuiarly severe in the early 1980's and is still prevalent in some areas (Bowers and Hopkin 1997). Early public and scientific opinions on the causes of forest decline were often not based on sound scientific knowledge. Factors such as acidic precipitation and ozone were rnost often mentioned as direct causes of forest decline in the early stages. Although standards of nutrition for sugar maple (Acer saccharum Marsh.) were not known at the time, some common nutrient deficiencies were identified: K in the Eastern Townships, Mg on some sandy soils, and P on some sites with mull humus. More than 10 years after the onset of decline, we now have a better understanding of the nutritional problems associated with forest decline.
Parent Publication
Citation
Cote, Benoit. 1999. Nutritional factors associated with decline in Canada. In: Horsley, Stephen B.; Long, Robert P., eds. Sugar maple ecology and health: proceedings of an international symposium; 1998 June 2-4; Warren, PA. Gen. Tech. Rep. NE-261. Radnor, PA: U.S. Department of Agriculture, Forest Service, Northeastern Research Station: 67.
