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FOREST WATCH is a proven program with students conducting basic and applied research on forest ecosystems in New England. In addition to impacting students and teachers, FOREST WATCH has made a number of important scientific findings over the past 20 years. Student data and indices document the following: • White pines respond to summertime (growing season) variations in ozone levels, which vary from year to year. • Needle health (based on chlorophyll content and moisture levels) is inversely correlated with growing season ozone levels: White pine health is good if ozone levels are low during a growing season. White pine health is poor if needles are exposed to high ozone levels during a growing season. • Trees growing at coastal locations exhibit poorer health than trees growing inland. Levels of ground-level ozone are higher along the coast and lower inland. • In the early to mid-1990s (1991-1996), white pine needle health overall was poor, but improved dramatically between 1...See More


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