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NSN seed logoIf data is available, this is where you find Ecoregion Descriptions, Plant Communities of that ecoregion, and Species Lists/Recommendations for both.  If you know the community types at your project site, use community recommendations as the species will be more appropriate and more specifically geared to your site.  
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Southern California Mountains Ecoregion

Like the other ecoregions in central and southern California, the Southern California Mountains has a Mediterranean climate of hot dry summers and moist cool winters. Although Mediterranean types of vegetation such as chaparral and oak woodlands predominate, the elevations are considerably higher in this region, the summers are slightly cooler, and precipitation amounts are greater, causing the landscape to be more densely vegetated and stands of ponderosa pine to be larger and more numerous than in the adjacent regions. Severe erosion problems are common where the vegetation cover has been destroyed by fire or overgrazing.

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Southern California Mountains Plant Communities

Alpine Fell-fields

Almost entirely perennial herbs, scattered or forming low turf, or among rocks; many cushion plants. Heavy accumulations of snow, where not swept away by gales, often persisting well into the summer.
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Chaparral

Dry slopes and ridges below the Yellow Pine Forest. Diverse hard-leaved, often evergreen, shrubs typically growing together to create impenetrable coverage. Fire-prone, with many shrubs sprouting from the stumps.
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Foothill Woodland

Foothills and valley borders, 400 to 3000 feet. Trees 15 to 70 feet tall, in dense or open woodland, with scattered brush and grassland between the trees, which include Pinus sabiniana, several species of oak, California bay laurel, and California buckeye.
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Red Fir Forest

Dense forest in a heavy snow accumulation zone, from 8000 to 9500 feet.
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Southern Oak Woodland

Valleys of interior southern California from Los Angeles County to Mexico, ascending to about 5000 feet. Trees 20 to 60 feet tall, with grassland or few soft shrubs between them.
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Valley Grassland

Originally with various bunchgrasses such as Nasella pulchra, now largely dominated by invasive exotic annual species. Open treeless grassland, with vernal pools scattered locally.
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Yellow Pine Forest

Mid-elevation forest between the foothill pine communities and red fir zone. Yellow pines are prevalent, but many other large trees contribute to a mixed-conifer forest, including white fir, incense cedar, and sugar pine. Openings dominated by Arctostaphylos, Ceanothus, and to a lesser extent, Ribes.
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