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The ecology of the Sierra Nevada, located in the U.S. states of California and Nevada, is diverse and complex. The combination of climate , topography , moisture , and soils influences the distribution of ecological communities across an elevation gradient from 500 to 14,500 feet (200 to 4,400 m).
The Sierra Nevada–Great Valley Block (SNGV) is a section of the Earth's crust in California, United States, encompassing most of the region east of the Great Valley fault system which runs along the eastern foot of the Coast Ranges, and west of the Sierra Nevada Fault which runs along the foot of the Sierra Nevada's eastern scarp.
Moving southward, the elevation range of the lower montane forest grows. Its elevation range at the northern end of the Sierra is from 1,200–5,500 feet (370–1,680 m). In the central Sierra, its elevation range is from 3,000–7,000 feet (910–2,130 m). In the southern end of the Sierra, its range is from 2,500–9,000 feet (760–2,740 m). [1]
Sierra Nevada lower montane forest in Yosemite Valley. The cooler and wetter mountains of northern California are covered by forest ecoregions. Both the WWF and the EPA divide the mountains into three ecoregions: the Sierra Nevada, [16] the Klamath Mountains, [17] and the Eastern Cascades Slopes and Foothills (occurring on the Modoc Plateau). [18]
The subalpine zone of the Sierra Nevada occurs between 2,900–3,660 metres (9,500–12,000 ft) in the southern part of the range and 2,450–3,100 metres (8,000–10,200 ft) in the north. [1] Because the Sierra is higher in the south, the majority of subalpine occurs in the central and southern portions of the range, south of the Lake Tahoe ...
In an aerial view, widespread flooding is seen as a series of atmospheric river storms melts record amounts of snow in the Sierra Nevada Mountains on March 23, 2023, near Corcoran, California.
According to the California Department of Water Resources, in 2016, nine of the twelve biggest reservoirs in California are below the historical average, even after the El Nino in the winter of 2015. In the last five years, Fresno has received significantly less rainfall than the historical average of 14.77 inches per year, with the average ...
Landslides in California occur mainly due to intense rainfall but occasionally are triggered by earthquakes. Landslides are common in Southern California, the San Francisco Bay Area and other parts of Northern California, and the Sierra Nevada. Although they most often are reported when they impact residential developments, landslides also ...