Complex sentence: Trees with epiphytes were found to be significantly larger than those without, this suggests that the palms must reach a certain age before they are colonised, for example it is estimated that palms must be 20 years old before they are colonised by vascular epiphytes.
Split into simpler sentences: Trees with epiphytes were found to be significantly larger than those without. This suggests that the palms must reach a certain age before they are colonised; for example, it is estimated that palms must be 20 years old before they are colonised by vascular epiphytes.