SUBJECT INDEX
See also the Systematic Index
A
Abdominal ganglion, 331
Absorption, by plants, 140-142
Acacia tree, 80, 506, 509, 515, 540
Acheb, 128, 139
Acorns, 519
Actinomycetes, 75
Activity cycles
in fishes, 445-450
in insects, 365-371
Adaptation, see also Phenology
in fishes, 386, 404-405, 407-408,
409-410, 456, 463-464
in insects, 356-363, 371-372
in man, 524
of vegetation, 137-138, 139-149, 217,
247
Adrar of Iforas, 139
Aestivation, 408
Afghanistan, desert pavements of, 50
Africa, see also North African deserts;
South Africa; South African deserts
desert soils of, 49, 57, 79-80
halophytes of, 287
Agave, desert, 515
Aggregation, 52-53
Agriculture
aquifer depletion and, 27
among Piman Indians, 517, 518-519,
520-521, 523
Aguelmane, 129
Air temperature, in Sahara Desert, 114,
117-118, 119
Aizoaceae, 177
Ala-Chan Desert, 85
Ala Shan Desert, 85
climate, 224
Alberta, vegetation of, 253
Alfalfa, 534
osmotic potential of, 246
Algae, 73-74, 166, 264
desert varnish and, 58, 186-187
distribution, 167-168
ecology, 203
edaphic, 168-177
fishes and, 406, 424, 466-467, 468
gas production by, 430
hydrature of, 229
insolation of, 183
interrelation with lichens, 194-196
lithophytic, 178-179
nitrogen fixation and, 183-184, 186
rock weathering and, 186
of Sahara Desert, 134
soil and, 156
taxonomy, 166-167, 202-203
water sources for, 179, 181
Alluvial deposits, 36, 37, 47
stratification of, 44, 46
Altar River, 508
Alumina, 57
American bison, 510
American Southwest, see also specific
deserts
algae of, 74, 169, 172-173, 175, 178,
202-203
aquatic environments of, 392, 393, 398
desert winds of, 34
fungi of, 76, 202
halophytes of, 293
legumes of, 63
565