Very similar to Sierran Mixed Conifer Forest (84230), but lacking its more xeric species and with the conspicuous addition of Sequoiadendron giganteum, which grows to about 100m tall and about 12m D.B.H. Sequoiadendron usually occurs in discrete groves, usually intermixed with Sierran Mixed Conifer Forest; very isolated individual trees of this species rarely occur. Growth may be less limited by summer drought than in the other Sierran Lower Montane Forests because of the availability of ground water.
SITE FACTORS:
Very similar to the moister portion of Sierran Mixed Conifer Forest (84230), and scarcely distinct from it. Associated with abundant ground water (Rundel 1969); often near springs, but rarely associated with major streams. Probably dependent on periodic fires for establishment of Sequoiadendron seedlings. May eventually be replaced by Sierran Mixed Conifer Forest or Sierran White Fir Forest (84240) in absence of fire. Mature trees of Sequoiadendron often survive repeated fires. This species does not crown sprout, but its thick, fibrous, tannin-filled bark resists burning. Individuals of this species may live for over 3,000 years.
DISTRIBUTION:
West side of the Sierra Nevada, in isolated groves mostly surrounded by Sierran Mixed Conifer Forest (84230). Eight very isolated groves occur along a 150-mile stretch of the central Sierra Nevada, from Placer Co. to Fresno Co. Most of the groves occur in a 70-mile portion of the southern Sierra Nevada, from Converse Basin in southern Fresno Co. to Deer Creek in southern Tulare Co. The largest groves are near Giant Forest and Grant Grove in Sequoia-Kings Canyon National Park. Elevation ranges from 2,700-8,800 feet (800 to 2700m), but usually between 5,000-7,000 feet (1500-2100m).
UPDATE: 10/86
Source: Holland, 1986
Digital Text: NatureBase