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. iCxBmA8LqN2sePJIJ31H/sm63Lff2hD75Qkk9T4b4C+Ab/xiF7e+DIR6X+SDPMa9