Adjunct Researchers

Jessie Berta-Thompson, Ph.D.

Dr. Berta-Thompson is a biologist working with the Gardens in modeling the demographics of rare plants and analyzing the digital datasets created by the herbarium collections.

Leo Bruederle, Ph.D.

Dr. Bruederle is Professor Emeritus in Integrative Biology at the University of Colorado Denver. His current systematics research interests include morphometrics, population genomics, species distributions and phylogeography, and phylogenetics.

Roy E. Halling, Ph.D.

Dr. Halling is a mycologist involved in exploration, inventory and documentation of fungal diversity. He is continuing his research on the taxonomy, biogeography and diversity of mushrooms, particularly those of the bolete family (porcini group).

Melissa Islam, Ph.D.

Dr. Islam is a botanist and museum professional working on population genetic projects related to her former position as the Associate Director of Biodiversity Research & Head Curator of Natural History Collections at Denver Botanic Gardens.

Jeff Ravage

Mr. Ravage is the North Fork Watershed Coordinator for the Coalition for the Upper South Platte and oversees forest ecological restoration projects. He is currently investigating the use of native mushrooms for restoration and remediation.

Barbara M. Thiers, Ph.D.

Dr. Thiers is the Director Emerita of the New York Botanical Garden Herbarium. Her work focuses on bryophytes, especially liverworts, and on the history of herbaria and the digitization and mobilization of natural history collections.

Loraine Yeatts

Ms. Yeatts is an active field botanist and taxonomist who has conducted numerous botanical surveys, which have contributed significantly to building the Gardens collection with almost 6,000 high quality specimens. 

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