Temperature responses of two sympatric seagrasses, Amphibolis antarctica and Amphibolis griffithii, in relation to their biogeography

Seedlings of the viviparous seagrasses, Amphibolis antarctica (Labill.) Sonder & Aschers. and Amphibolis griffithii (Black) den Hartog, were collected from near Dongara in 1990 and grown in seawater cultures at temperatures of 10-30 degrees Celsius. This was to test whether any differences in temperature responses (survival and growth) existed between these two species under controlled conditions, and if so, whether these could account for the observed differences in distribution.