Past Research Projects
Led by rattlesnake researcher Bryon Shipley, the Plains Conservation Center, East Alameda Veterinary Hospital, Dr. Kevin Fitzgerald and Animal Planet have collaborated on a two-year study of prairie rattlesnakes that ended in late 2006. Each spring, radio transmitters were surgically implanted into 12-14 rattlesnakes, which were then released back into our prairie preserve. Throughout the late spring, summer and early fall, the rattlesnakes were tracked using a radio receiver and directional antenna. Each rattlesnake's transmitter corresponded to a different radio frequency, which became the rattlesnake's “name” during the study period. For example, a rattlesnake whose radio frequency was 150.920 megahertz became “920”.
As each rattlesnake was tracked using its particular radio “signature”, the rattlesnake's behavior (basking, mating, eating, moving, etc.) was recorded along with air and ground temperatures and its current GPS location. Volunteers supported by the PCC were indispensable in tracking rattlesnakes and recording data. This study was one of the first of its kind in the Colorado eastern plains and hoped to answer questions about rattlesnake behavior, home range and differences in male and female migration patterns in association with prairie dog colonies. Research paper documenting earlier research. Another example of rattlesnake research.
The K-T (Cretaceous-Tertiary) Boundary marks one of the two most awesome annihilations of life in the history of earth. At the K-T boundary, 70% of life on earth—including dinosaurs, flying reptiles, most marine reptiles, all ammonites, all baculites, 50% of land plants, all North American marsupials and a great percentage of marine plankton—disappeared from the fossil record, never to be seen again.
Dr. Kirk Johnson, of the Denver Museum of Nature and Science, has led research on the exposure of the K-T boundary at the PCC West Bijou site. The team has used the following process to zero in on the exact layer:
- Found Cretaceous-aged pollen at the bottom of the exposures
- Collected Paleocene-aged fossils at the top of the exposures
- Systematically collected pollen samples through exposures -- this narrowed the zone to 3m
- Found dinosaur bones 4 m below the K-T coal
- Narrowed the K-T horizon to 1cm by pollen analysis
- Found diagnostic Paleocene mammal jaw just 12m above the strata of focus.
The West Bijou K-T Boundary exposure is not only globally significant in that it will further illuminate the catastrophic event and how earth recovers from such events, but it also stands to recalibrate geologic time!
Drs. Janet Wingate and Lorraine Yeats have been documenting and collecting botanical specimens at the West Bijou site of the PCC since 2003. After the specimens are collected, pressed and dried, they are mounted and become part of the Denver Botanic Gardens herbarium collection. Herbarium specimens are concurrently being collected for the PCC and the University of Colorado. To date, over 275 plant species have been identified and collected.
Dedicated birders Karen Metz, Ann Bonnell, Sandy Schnitzer and many others have worked since 2003 to compile a species list and document bird sightings on a monthly or bimonthly basis. This will enable the PCC to track the changes in bird populations over time. A list of species sighted and summary of the numbers of birds seen each year will soon be available here.
Budburst Citizen Scientist Effort
Interested in climate change? Participate in a national citizen science effort in your own backyard or nearby park that you visit frequently. You can follow plants like aspen, common yarrow or western serviceberry to see when budburst and bloom occur. Compare with other scientists like yourselves - log on and check "Participate"- find the activity guide and data collection sheet and you're on your way!
Networks of incised dry channels, called arroyos or gullies, are common features of prairie and desert landscapes. These channels form an important part of the ecosystem and water cycle. Thanks to occasional flash floods and the shade provided by their banks, gully networks tend to be zones of high soil moisture that support less drought-tolerant plant species. The deeper and more vegetated channels provide shade for wildlife, and their walls offer burrow and nest sites for birds and small mammals. Dr. Greg Tucker, Assistant Professor of Geology at the University of Colorado, is studying the rates and patterns of gully channel changes at the West Bijou site of the PCC.
Metro State College professor Dr. Jonathan Kent and his archaeology students and volunteers conducted surveys to document areas that showed evidence of previous human inhabitants of the PCC’s prairie lands. They surveyed about a quarter of the PCC’s West Bijou site, documenting sites and isolated artifacts. The Colorado Archaeological Society augmented these surveys during October and November 2006.