Yosemite National Park a larger national park by 1890, one which encompassed the valley and its surrounding mountains and forests, paving the way for the National Park System. Yosemite is one of the largest and least fragmented habitat blocks in the Sierra Nevada, and the park supports a diversity of plants and animals. The park has an elevation range from and contains five major vegetation zones: chaparral and oak woodland, lower montane forest, upper montane forest, subalpine zone, and alpine. Of California's 7,000 plant species, about 50% occur in the Sierra Nevada and more than 20% are within Yosemite. The park contains suitable
History of the Yosemite area Through Johnson, Muir had a national audience for his writing and a highly motivated and crafty congressional lobbyist. Muir's wish was partially granted on October 1, 1890, when the area outside the valley and sequoia grove became a national park under the unopposed Yosemite Act. The Act provided "for the preservation from injury of all timber, mineral deposits, natural curiosities, or wonders within said reservation, and their retention in their natural condition" and prohibited "wanton destruction of the fish and game and their capture or destruction for the purposes of merchandise or profit." Yosemite National Park included the entire upper