69 



1959 



1942 



1000 m 



Fiqnre 1. Siti^ iiamfs around the Wf'f.fprirt Pi^'f-ir^. 



Dashed lines indicate upper extent of ^slgrass in. tl'p '"utlr ru 

 part of the estuary on different dates. The position of eelgrass hpils 

 north of detail of the Westport Rivers showing site names, and changes 

 in the upper estuary limits of eelgrass growth. 



