The recent ecological and systematics studies on Mesoamerican cycads have shed light on issues concerning the biogeography, ecology, taxonomy and speciation. I summarize some of the most intriguing results that have brought implications to these fields. As most cycad species are threatened, those researches may also contribute to conservation. Yet, many questions remain open for cycads and other tropical biological groups. In order to clarify the great richness and history of the Mesoamerican biodiversity, further multidisciplinary research is necessary. I introduce this workshop as an platform for the assistants to establish international networks.