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. OhWD85tnBxabtse9MN7hUy3mKrFD/I64DAvWeqw1++3nB7PYKH/Pzw51vXEnywhr