1 6 Regulation of Population Size, 219 



] 1 Irruptions. Catastrophes, and Cycles, 234 



] 8 Niche Segregation, 245 



1 9 Speciation, 257 



GEOGRAPHIC 20 Distributional Units, 26ti 



DISTRIBUTION 



OF COMMUNITIES 



2 1 Paleoecology, 280 



12. Temperate Deciduous Forest Biome, 293 



23 Coniferous Forest, Woodland, and Chaparral Biomes, 301 



24 Tundra Biome, 315 



25 Grassland Biome, 324 



26 Desert Biome, 332 

 Zl Tropical Biomes, 340 

 28 Marine Biomes, 351 



Bibliography, 373 

 Index, 404 



X Contents 



