To the people whose labors go beyond ideas into the realm of “real materials”—to the dry-land ecologists, wherever they may be, in whatever time they work, this effort at prediction is dedicated in humility and admiration. 4f+wveOmyCLcHHw1w2hHe2swfJMy6UOXZ5Wb9gjtTxOfxe4793cWTafWLLkaKO+b