forests around Sackville Lake in Nova Scotia. In 1962 to 1964 I worked in the “barrens” of Yarmouth and Shelburne Counties of Nova Scotia trying to come up with new ideas on how to regenerate new forest in areas that had previously supported forest stands. Those forest regeneration challenges were beyond my ability to suggest anything very helpful. In the 1960’s foresters were still scratching their heads about the very widespread forest dieback of yellow birch and beech that had occurred in Nova Scotia and neighboring northeastern states of the U.S. in the late 1940’s (see abstract of one reference below). That widespread dieback was long before Fukushima or HAARP. Forest tree vitality is influenced by a very wide range of potentially harmful agents or factors.
https://www.researchgate.net/publication/233518466_Aspects_of_Yellow_Birch_Dieback_in_Nova_Scotia