• Newsletter icon
  • Facebook icon
  • Twitter icon
  • Pinterest icon
  • Blog icon
  • YouTube icon
  • DBG Instagram

Adjunct Researchers

Anna Sher, Ph.D.

Adjunct Researcher
former Gardens Director of Research & Conservation

Dr. Anna Sher is a plant ecologist with a particular interest in conservation issues and expertise in ecology and restoration of Tamarix (tamarisk, saltcedar) invasions.Her research also includes investigation of climate change using historical plant databases from herbaria.

From 2003-2010, she held a joint position with the University of Denver, and remains professor of biology there.

Dina Clark, M.S.

Adjunct Researcher
former Kathryn Kalmbach Herbarium Curator

Ms. Clark is a collections manager at the University of Colorado Herbarium. Her work has focused on the floristics and conservation in the eastern plains of Colorado. Dina has conducted floristic inventories, rare plant surveys and ecological research on federal, state and private lands. Recent field projects include assisting the Colorado Natural Heritage Program with a 2007 and 2009 biological inventory of southeastern Colorado, and a floristic inventory of the Windy Point Area of Pikes Peak for the USDA Pike-San Isabel National Forest. She is currently working along the Arikaree River in Yuma County and in South Park.

Donald Hazlett, Ph.D.

Adjunct Researcher

Dr. Hazlett is an ethnobotanist with expertise in human uses of plants in the western United States and in Latin America. He received his doctorate from the University of Washington, Seattle in Tropical Ecology. Dr. Hazlett is fluent in Spanish and has been an instructor for the School for Field Studies in both Costa Rica and Ecuador. His work at the Gardens has focused on establishing the ethnobotanical collection at KHD, with an emphasis on Latin American plant uses, and screening plants native to Colorado for alkaloids. He is a field biologist and has taught at Colorado State University, University of Colorado, University of Northern Colorado, University of Denver and at several community colleges in Colorado.

Leo Bruederle, Ph.D.

Adjunct Researcher

Dr. Bruederle’s interests include the evolution of species rich genera such as Carex (Cyperaceae), which comprises approximately 2000 species worldwide. He is interested in the evolutionary mechanisms that facilitate speciation in this large genus, and has many publications in this area. Additional interests include: plant systematics at and below the level of genus, population genetics and endemism, and conservation genetics. Dr. Bruederle is currently associate professor at the University of Colorado Denver.

Loraine Yeatts

Adjunct Researcher

Ms. Yeatts is an active field botanist and taxonomist. She has conducted numerous botanical surveys, including an important survey of the Rocky Mountain National Park with KHD herbarium staff. Her current research focuses on the flora of Gateway Natural Area, where she and her husband are volunteer stewards. Her floristic studies and field work have contributed to building the collection with almost 6,000 high quality specimens. In addition to her floristic work, Loraine is an accomplished wildflower photographer with contributions to publications including the recent book by Dan Johnson, “Meet the Natives.” She is also author of “Alpine Flower Finder” with Dr. Janet Wingate. Loraine recently helped describe a new, possibly rare species of Packera, Packera mancosana, with L. Yeatts, B. Schneider, & A. Schneider.

Scott Bates, Ph.D.

Adjunct Researcher

Dr. Bates is an active researcher with an academic background in plant biology, lichenology, microbiology, mycology and molecular microbial ecology. He currently works at the University of Colorado (CIRES) in the lab of Dr. Noah Fierer, where he has been involved with diverse projects such as surveying soil microbes of Sub-Saharan Africa, examining global patterns of soil archaea, and investigating the diversity of microbes associated with the lichen symbiosis. At the Gardens' Sam Mitchel Herbarium, he has concentrated on the taxonomy of gasteroid fungi (e.g., “puffballs” and “earthstars”) of this region using classical and modern DNA-based approaches. His current focus is the genus Tulostoma, comprising ca. 100 gasteroid species. The herbarium’s extensive collections in this genus have provided rich material for study. Additionally, he hopes to help with the effort to make herbarium data on Colorado fungi interactively available to the public via the Internet.

Cara Gibson, Ph.D.

Adjunct Researcher

Dr. Gibson was trained as an entomologist and her interests include ecology, biodiversity, and interactions with microbial symbionts. She has worked as a field ecologist, research scientist, educator, outreach coordinator, and scientific illustrator. Dr. Gibson’s work with the Gardens supports ongoing studies involving plants and their insect pollinators. 

Sarah Taylor, Ph.D.

Adjunct Researcher

Dr. Taylor is a plant systematist interested in the floristics of Colorado and New England and in the evolution of edaphic endemism – that is, what patterns we can observe over time about how groups of plants become restricted to certain substrates like granite, serpentine or gypsum. Since moving to Colorado, she enjoys leading interpretive hikes of the alpine tundra during the fleeting summer growing season for the Mount Goliath Docent Program at the Gardens. Her current research focuses on documenting the biodiversity of plants at Denver Botanic Gardens at Chatfield, a 600-acre parcel encompassing a variety of habitats.