Effects of Urbanization on Forest and Plant Ecosystems - Black Rock ...
oaks (Quercus rubra) were grown from an urban to rural gradient. Again, the main ..... that Accelerator Mass Spectrometers (AMS) could be used to count the 14C particles ..... winter and summer differences were approximately 19 ppm at 125 m above ground level. ... weeks in December 1979 at Tiana Beach in Long Island.
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blackrockforest's website is blackrockforest.org