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The coast of California north of San Francisco contains the Northern California coastal forests (as defined by the WWF) and the southern section of the Coast Range ecoregion (as defined by the EPA). This ecoregion is dominated by redwood forest , containing the tallest and some of the oldest trees in the world.
The northern spotted owl primarily inhabits old-growth forests in the northern part of its range (Canada to southern Oregon) and landscapes with a mix of old and younger forest types in the southern part of its range (the Klamath region and California). Old-growth forests are often biologically diverse, and home to many rare species, threatened ...
Recent research by the University of Arkansas Tree-Ring Laboratory has studied several unlogged stands of blue oak woodlands, and suggests that the state may harbor over 500,000 acres (2,000 km 2) of such old growth forests. This would make California's oak woodlands some of the most extensive old growth forests left in the state.
Most of the redwoods in the monument are between 500 and 800 years old. The oldest is at least 1,200 years old. Other tree species grow in the understory of the redwood groves. Three of the most common are the California bay laurel, the bigleaf maple and the tanoak. Each of these species has developed a unique adaptation to the low level of ...
The Headwaters Forest Reserve is a group of old growth coast redwood (Sequoia sempervirens) groves in the Northern California coastal forests ecoregion near Humboldt Bay of the U.S. state of California. Comprising about 7,472 acres (30.24 km 2), it is managed by the Bureau of Land Management (BLM) as part of the National Landscape Conservation ...
Eastern Old-Growth Forests: Prospects For Rediscovery And Recovery. Island Press. ISBN 978-1-55963-409-0. Eifert, Larry (2000). Field Guide to Old-Growth Forests: Exploring Ancient Forest Ecosystems from California to the Pacific Northwest. Sasquatch Books. ISBN 978-1-57061-234-3. "Redwood National Park Frequently Asked Questions".
The Redwood Grove comprises old-growth "virgin" redwoods, the oldest trees of which are approximately 1,400–1,800 years old and grow to approximately 300 feet (91 m) tall and over 16 feet (4.9 m) in diameter. Referred to by locals as "the loop," the grove is primarily a self-guided walk—but on most summer weekends, and many other times year ...
Researchers estimate the extent of old growth in the forest is 18,900 acres (76 km 2). It consists largely of Jeffrey pine (Pinus jeffreyi) forests, although old-growth coast redwood (Sequoia Sempervirens), coast Douglas-fir (Pseudotsuga menziesii var. menziesii), and white fir (Abies concolor) are also found there. [11]