SFREC research sustains rangeland and oak woodlands
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چکیده
منابع مشابه
Purple Martins in Oak Woodlands
Purple martins are cavity-nesting swallows that once nested fairly widely in California’s oak woodlands but are now rare in that habitat. The old oaks of the Tehachapi Range (southern Sierra Nevada) may now host the last martins that nest in oak woodlands, with approximately 100-200 pairs or about 15 percent of the California population. In summer of 2000, we found 57 nests in 46 valley and blu...
متن کاملSilviculture to Restore Oak Savannas and Woodlands
Variability in historic fire regimes in eastern North America resulted in an array of oak natural communities that were dominant across the region. In the past century, savannas and woodlands have become scarce because of conversion to agriculture or development of forest structure in the absence of fire. Their restoration is a primary goal for public agencies and conservation organizations. Al...
متن کاملAcorn production in Spanish holm oak woodlands
We present a review on the state-of-the-art of fruit prodution in Western Iberia woodlands («dehesas»), and particularly in Q. ilex (holm oak) «dehesas». This threatened ecosystem is of very high ecological and economical importance. Quercus sp. fruits (acorns) are essential for wildlife, and for pig fattening in «dehesas». In the first part of this review we briefly describe the phenology of t...
متن کاملRegeneration of California Oak Woodlands 2001 - 20051
The first (1981-1984) and second (1991-1994) statewide inventories of California’s oak woodlands found low levels of regeneration for several common oak species. In 2001, a new statewide inventory of California’s oak woodlands was initiated, with 10 percent of field plots measured each year. The first five years of data (2001-2005) were used to examine regeneration and sapling distributions in ...
متن کاملUnderstory-Canopy Relationships in Oak Woodlands and Savannas1
We summarize available information about the relationships between oak overstory and understory plants for major California rangeland types. Understory biomass, productivity, and plant species composition vary considerably because of geographic location, overstory species composition, and overstory density and distribution. Deciduous oak canopies in areas with less than 50 cm annual precipitati...
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ژورنال
عنوان ژورنال: California Agriculture
سال: 2010
ISSN: 0008-0845
DOI: 10.3733/ca.v064n02p54