Search results
Results From The WOW.Com Content Network
Quercus agrifolia, the California live oak, [3] or coast live oak, is an evergreen [4] live oak native to the California Floristic Province.Live oaks are so-called because they keep living leaves on the tree all year, adding young leaves and shedding dead leaves simultaneously rather than dropping dead leaves en masse in the autumn like a true deciduous tree. [5]
Quercus douglasii, known as blue oak, is a species of oak endemic to California, common in the Coast Ranges and the foothills of the Sierra Nevada. [4] It is California's most drought-tolerant deciduous oak, [5] and is a dominant species in the blue oak woodland ecosystem. It is occasionally known as mountain oak and iron oak. [6] [7]
The Oaks 2040 survey estimates that 750,000 acres (3,000 km 2) of California oak woodlands are seriously threatened by 2040 as a burgeoning state population makes ever more use of the wildland. [12] This comprehensive survey includes oak woodland maps and inventory data for the ten oak types found in California.
California oak woodland occurs in moist areas usually up to 4,900 feet (1,500 m). [6] [5]: 387 These woodlands include oak species, such as coast live oak (Quercus agrifolia), canyon live oak (Quercus chrysolepis), and Engelmann's oak (Quercus engelmannii).
California's oldest tree, a Palmer's oak thought to be 13,000 to 18,000 years old, may be threatened by a proposed development, environmentalists say.
The Cosumnes River Preserve is a nature preserve of over 51,000 acres (210 km 2) located 20 miles (30 km) south of Sacramento, in the US state of California.The preserve protects a Central Valley remnant that once contained one of the largest expanses of oak tree savanna, riparian oak forest and wetland habitat in North America. [1]
California’s eco-bureaucrats halted a wildfire prevention project near the Pacific Palisades to protect an endangered shrub. ... “These wooden poles were installed between 1933 and 1955 and ...
Map of wood-filled areas in the United States, circa 2000 [1]. In the United States, the forest cover by state and territory is estimated from tree-attributes using the basic statistics reported by the Forest Inventory and Analysis (FIA) program of the Forest Service. [2]