_l 2 



a 



O 



=> 20 - 



O 



2 



O 







01 



AREA OF MOTU ( HA ) 



Fig. 3 1 . Total numbers of plant communities ( upper graph ) and species ( lower graph ) in relation to islet area, demonstrating plant succession on the differentsized 

 islets encircling Caroline's lagoon. Roman numerals refer to size classes of the motus: I = < 0.2 ha, II = 0.2 to 0.7 ha, III = 0.8 to 25.0 ha, 

 IV = > 25.0 ha. The break between II and III marks a substantial increase in the diversity, area coverage, and height of the forest ecosystems. Data is 

 based on Table 5. 



22 



20 . 



18 



o 



16 



12 



10 



a 8 



O 



z 



< 6 



O 



50 100 



200 



300 



400 



500 



600 



700 



800 



WIDTH OF MOTU (m) 



Fig. 32. Maximum heights of Pisonia forests in relation to width of the motus. Stars represent forests with 90-100% canopy cover; dots represent forest or scrub 

 with less than 90% cover. 



81 



