Large Trees Declining In Yosemite National Park, U.S.

Large trees have declined in Yosemite National Park during the 20th century, and warmer climate conditions may play a role. The number of large-diameter trees in the park declined 24 percent between the 1930s and 1990s. Scientists compared the earliest records of large-diameter trees densities from 1932–1936 to the most recent records from 1988–1999.

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