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. 1OfkaVvo1Zp5EewwmADvrsjH89VaoJcV8talzTp9S8tl717m2a/+PZJicfovyuf0