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. Hda3Jwvb6a2pN/Gfnhf2BMaNk1I6yzZNXcBNbaejom3VjJ5c3M3KmJajoUr/bVLH