INDEX 



397 



Aquatic climax communitios, intro- 

 duction, 294 



other, 311, 312 



stream habitats, 307-311 

 comparison, 310, 311 

 swift-water, 308-311 

 Arboreal adaptations, 55 

 Areas, deep benthic, 100 



pelagic, 100 



tidal, 99 

 Arenicola, claperedii, 333 



marina, 334 

 Argia, 308 



Argobuccinum oregonense, 330 

 Argyropelecus, 322 



— Cauliodus biome, 318 

 Aricia, 341 

 Aristida, 129, 287 



adscensionis, 283 



californica, 282 



divaricata, 282, 287 



purpurea, 278, 282, 287 



ternipes, 282 

 Armillaria, 140 

 Arphia, conspcrsa, 267 



pseudonietana, 265 

 Artemisia, 120, 272, 288, 293 



dracunculus, 273 



filifoha, 267 



tridentata, 244, 292 



vulgaris, 273 

 Arthropods, 46, 245 

 Asollus communis, 231 

 Asilus, 275 



Aspection, 13, 35, 222, 225, 226 

 Aspens, 237 

 Assemblage, 5 



Association, 243, 247, 256, 320, 8, 327, 

 331, 333 



other usages, 18, 148, 149 

 Associations, Balanus-M. calif orni- 

 anus, 327 

 edulis, 327 



beech-maple, 8 



Brissopsis-Amphiura, 345 



California prairie, 285-290 



coastal prairie, 277-280 



Cottonwood, 8 



Clymenella-Yoldia, 339 



Cucumaria-Scalibregma, 339 



Associations, desert plains, 280-285 



Echinocardium-Amphiura, 341, 343 



general discussion, 243, 247 



grassland, 260-293 



Haploops, 343, 345 



Macoma, -Leptos3'napta, 333 

 -Paphia, 333 

 -Tellina, 336 



map, 255 



marine, Brevoortia-Calanus, 320 

 Clupea-Calanus, 320 



mixed prairie, 260-269 



Nucula-Corbula, 348 



Palouse prairie, 290-293 



relationship, 329 



Strongylocentrotus, -Pteraster, 331, 

 332 

 -Pugettia, 331 



Sj^ndosmya. -Solen, 348 

 -Solen-Mya, 348 



true prairie, 269-277 



Venus-Echinocardium, 341 

 Associative memory, 32 

 Associes, 232 



size, 247, 248 

 Astarte-Arca biome, 345, 349 

 Astarte, borcalis, 334 



crenata, 345 



elliptica, 345 



montagui, 334 

 Aster, 272, 292 



ericoides, 272 



levis, 272 



multifloms, 272 



novae-angliao, 272 

 Asteroidea. 338, 340 

 Astorotheca alascona, 332 

 Astragalus, 292 



crassicarpus, 272 

 Atamasco, 279 

 Atriplcx, 292 

 Attached plants, 100 

 Attachment, 109 

 Attwater prairie chicken, 280 

 Aulocara elliotti, 265 

 Autecology, 1 

 Automatic instinct, 227 

 Avena, 120, 289 



-Bromus disclimax, 289 



fatua, 288 



