Plant evolution has in part been driven by abiotic factors and disturbance. As a consequence, Australian native flora has developed specific adaptations to deal with abiotic stress. These adaptations can be morphological, physiological and can include associations with other biotic organisms. Three key abiotic factors which have had a major bearing on plant adaptations in Australian biomes are: light, water and fire. Using examples from Australian native ecosystems, describe and discuss adaptations of whole plant communities and individual species to high and/or low levels of ONE of the above stresses.

1500 words.

5 references.