xiv Contents 



Productivity of the Ecosystem 481 



Concepts of Productivity 482 



Standing crop 483 



Relation to Population Growth 483 



Determination of Equilibrium Level 485 



Regional differences 487 



Material Removed 489 



Production rate 493 



Turnover 496 



Efficiencies 497 



Productivity of Land and Water 500 



Conclusion 503 



References 505 



Index 523 



