The University of Arizona

conservation biology

William (Bill) Halvorson

Picture of William Halvorson
Area of Expertise: 
Ecosystem Ecology, Landscape Ecology, Natural Resource Project Management, Landscape Management, Landscape Restoration, Natural Resource Inventory and Monitoring, Natural Area Resource Management
Professor
Bill Halvorson’s theme song is Geoffrey Mack’s “I’ve Been Everywhere.” (made famous by Hank Snow and Johnny Cash). By the time he was ready to go to high school he had already lived in Chicago, Wisconsin, Minnesota, and four different places in Phoenix and been to nine different schools. School then stopped the travel for a while, but off he went with a PhD for eight years at the University of Rhode Island and in the next ten years went from there to Denver, Washington, DC and Virginia, and finally southern California with the Department of Interior.

Mark W. Bierner

Area of Expertise: 
Plant Systematics
Professor

Mark Bierner received his B.A. in Botany and Ph.D. in Systematic Botany from the University of Texas at Austin. Courses he has taught include Introductory Biology, Introductory Botany, Plants and Our World, Native Plants, Local Flora, Cell Biology, Evolution and Genetics, Genetics, Systematic Botany, Biochemical Systematics, and Special Topics in Systematics. He also introduced a new course at The University of Texas entitled Plants, Environment, and Human Affairs, which he taught at the main campus in Austin and also in Sevilla, Spain.


An Attack on the Border

 by Christopher Sharp and Randy Gimblett

Short Description: 
Who is to Blame for the Human-related Impacts at Organ Pipe Cactus National Monument?

Hawks on the Wildland-Urban Interface

Image of a Cooper's Hawk
Short Description: 
Dr. Bill Mannan brings more than a decade's worth of research to the table for wildlife conservation in Tucson.

Adrian Quijada-Mascareñas

Adrian Quijada-Mascareñas
Title: 
Research Assistant Scientist
Area of Expertise: 
Biogeography, conservation genetics, molecular systematics, herpetology
Adjunct Professor

Devil's Hole Pupfish

Devil's hole pupfish

In the midst of the Mohave Desert there is a small crack in the earth. This crack opens to an enormous flooded cave system called Devil's Hole. In this hole lives an animal that supposedly has the smallest distribution of any vertebrate species in the world - the Devils Hole Pupfish. Both the Hole and the Pupfish have always been sources of great interest. President Harry S.

Short Description: 
Scott Bonar starts project on Devil's Hole pupfish.

Vicki L. Greer

Vicki L. Greer
Title: 
Wildlife Biologist, Senior
Area of Expertise: 
Long-term ecological monitoring, threatened and endangered species, conservation biology, data management

I have been with the Mt. Graham Red Squirrel Monitoring Project since its inception in 1989. This has been a unique opportunity to closely observe changes in a single system over the years. On a day to day basis, I supervise team biologists and technicians, oversee the population censuses of squirrels on monitored areas, manage long-term databases for the project, as well as prepare reports, manuscripts, and presentations. I still manage to spend time in the field, keeping up with the squirrels. I especially enjoy the cool weather on Mt. Graham in the summer!


Cecil R. Schwalbe

Cecil R. Schwalbe
Area of Expertise: 
Herpetology, conservation biology of amphibians and reptiles, community and restoration ecology, ecology and control of invasive species, reptile and amphibian diseases, monitoring amphibian and reptile populations
Assistant Professor


Atoms to Migration Patterns

Short Description: 
Students in the van Riper lab uncover migration patterns in songbirds

Conservation on the Edge

squirrel

Dr. John Koprowski in the School of Natural Resources and the Environment takes a special interest in what happens to populations at the edges of their range. Range edges are constantly growing due to fragmentation - and these are the places where we are likely to see striking ecological shifts as the climate changes.

Short Description: 
Populations near the edge of their range provide important insight on the impacts of climate change, especially in the montane forest islands of southeastern Arizona that harbor incredible biodiversity

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