After 13 months in Guyana, where he collected thousands of botanical specimens,[6] he and his wife returned to the US, where he had a post-doctoral position at the National Museum of Natural History.
[6][2] He then became the Urban Horticulture Extension Agent, Institute of Food and Agricultural Sciences, Fort Lauderdale, Florida, and an adjunct professor at Nova Southeastern University.
He's been dropped off by helicopter to collect samples in the most remote and least botanically known areas of Guyana, trained foresters and ecologists in Columbia, and helped found an herbarium in Peru.
Pipoly has also played a part in the discovery of about 100 new plant species ...[5]John has published 150 original research papers among internationally peer-reviewed journals and conducted fieldwork throughout the Tropical Americas, the Philippines and New Guinea.
For four decades he has collaborated with scientific consortia to document permanent biodiversity monitoring plots in the Americas, Caribbean, and Southeast Asia/Pacific regions.