396 



INDEX 



Anabaena, 139 



circinalis, 303 

 Anadromoiis fishes, 201, 202 

 Andrena, 275 

 Andropogon. 120, 243, 273, 275 



cin-atus, 282 



contortus, 278 



fiircatus, 278 



hirtiflorus, 282 



nutans, 278 



saccharoides, 257, 278 



scoparius, 256, 270, 278. 282 



ternarius, 278 

 Andropogoneae, 278 

 Anemone, 325 



caroliniana, 272 



patens, 272 

 Anemone, sea, 327, 328 

 Angiosperms, floating. 96 



submerged, 96 

 Animals, 44, 71, 88, 102, 109, 180 



as active agents, 116, 117 



competition. 166, 167 



decumbent, 52 



earlier, 251 



ecesis, 65 



food, 114 



grassland, 253, 254 



grazing, 119 



influence, 237, 238 



insectivorous, 134-136 



in tidal areas, 99, 100 



land, 235 



maximum numbers, 194 



motile, 31, 32, 46 



organisms, 32 



oviparous, 46-47 



parasites of, 45-46 



plankton, 91 



reactions, 97 



sedentary, 54 



seed and fruit coactions, 125-131 



sessile, 31, 53 



multiple individuals, 50-54 

 sedentaiy in water, 44-45 

 single individuals, 54, 55 



shelled, 101 



symbiosis, 140, 141, 143, 144 



trapping, 357 



viviparous, 47-48 



Annelids, 338, 339, 341 

 Annuation, 13, 222, 249, 348 

 Anodonta, 143 

 grandis, 300 

 Anosia plexippus, 203 

 Ant-eating flickers, 135 

 Antelope, 133, 253 

 jackrabbit, 285 

 pronghorn, 120, 264 

 Antennaiia campestris, 272 

 Anthus (pipits), 135, 257 

 Antilocapra americana, 243, 257, 259 

 Ant lion, 232 



Ants, 59, 79, 82, 143, 155, 171, 172 

 cattle, 144 

 desert, 153 

 mound-making, 237 

 Aphids, 117 



Aphodius distinctus, 275 

 Ajtlodinotus grunniens, 300, 306 

 Appendix, 354-358 



Aquatic climax communities, 294-312 

 climax, fresh-water, 298-311 

 introduction, 298 

 lake, 305, 307 

 bottom subdominants, 306, 307 

 dominance of lake fishes, 307 

 dominants, 306 

 influents, 307 

 river, 299-305 

 biotic development, 303-305 

 dominants and subdominants, 



300 

 faciations, 305 

 influents, 301 



nature of dominance, 301-303 

 plankton, 301 

 properties, 298-299 

 small river, 299, 300 

 dominance, 240-241 

 food relations, 297, 298 

 fresh-water, 294 

 hydroclimates, 294, 295 

 hydroclimatic factors, 295-297 

 circulation, 295 

 density, 295 



dissolved substances, 296, 297 

 light and temperature, 296 

 susjiendcd matter and color, 295, 

 296 



