SUBJECT INDEX
585
in Sahara Desert, 131
water levels in, 5
Whale, 515
Wheat, 523
Wheatgrass, 91
White bursage, 499
White-lined sphinx moth, 514
White-necked raven, 504
White River springfish, 458
White River Wash, 26
White Sands, New Mexico, 47
gypsum sand dunes of, 55
White sucker, 466
White-tailed deer, 503, 507, 510
Wild pig, 503
Willows, 16, 516
Wind
in Aridisol genesis, 34
control of, 46
in development of saline soils, 278
effects on soil structure, 52
in Sahara Desert, 119-121
relief and, 124
Window plants, see Fensterflanzen
Woodlice, 312
Woundfin, 436, 437, 439
X
Xerohalophytes, salt tolerance, 70
Xeromorphism, of sun leaves, 247, 249
Xerophytes, 262-263
hydrature in, 263-270
salt tolerance, 70
Y
Yaquis, 493
Yaqui sucker, 511
Yellow fever, 516
Yucca, 90
Yuma Desert, 498
Yumas, 493, 516
Z
Zietgeber, 367
Zinc, deficiency of, 66, 67
Zinnia, 506
Zummurrud, Saudi Arabia, 536-538
Zzyxx pond, 445-447