Ecology: Concepts and Applications 4th Edition by Manual Molles

تمرين 2

Would you expect the number of species to remain indefinitely at the level shown in figure 20.7? Space on large stable boulders in Sousa's study site are dominated by the algal G. canaliculata and support 2.3 to 3.5 species, not the 5 shown in figure 20.7. Explain. (Hint: How long did Sousa follow his study boulders?)