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Journal

2015

Aliso: A Journal of Systematic and Floristic Botany

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The Spanish And Mexican Baseline Of California Tree And Shrubland Distributions Since The Late 18th Century, Richard A. Minnich, Brett R. Goforth, Richard Minnich Jan 2015

The Spanish And Mexican Baseline Of California Tree And Shrubland Distributions Since The Late 18th Century, Richard A. Minnich, Brett R. Goforth, Richard Minnich

Aliso: A Journal of Systematic and Floristic Botany

Historical distributions of 31 tree species, chaparral, and coastal sage scrub described by Spanish land explorers in the late eighteenth and early nineteenth centuries (1769–1806) and in land grant diseños (1784–1846) are reconstructed at 634 localities across central and southern California. This baseline predates most formal botanical surveys by nearly a century, allowing for assessment of vegetation change over the broadest time frame for comparison with pre-historical evidences and future distributions. Spanish accounts are compared with historical sources in the Mexican era (1821–1848), American settlement (1848–1929), and modern range maps of the 1929–1934 Vegetation Type Map (VTM) survey. Among tree …