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. 8LV1LFY/57iQvZ1TE74ze8CC8AeLAPp7LKn/DNXrILr2t+TbTL7vM0ED5E226ujq