Datasets
Annually mapped permanent quadrats represent a gold mine of data for research in plant demography and population dynamics. One of the primary reasons we are investing so much time in digitizing historic chart quadrat datasets is to distribute them to the research community. We plan to distribute three forms of data on this page: 1) a quality controlled version of each dataset in complete detail, 2) a summary of mean species abundances by year, and 3) demographic parameters estimated by our statistical models.
Complete datasets
- Hays, Kansas, southern mixed prairie, 1932-1972 Ecological Archives
- US Sheep Station, Idaho, sagebrush steppe, 1923-1957, 1979 Ecological Archives
- Fort Keough Livestock and Range Experiment Station, Montana, northern mixed prairie, 1932-1945 Ecological Archives
- Jornada Experimental Range, New Mexico, desert grasslands, 1919-1979, 1995, 2001 (coming soon)
- Santa Rita Experimental Range, Arizona, desert grasslands, 1915-1935 Ecological Archives
- Shortgrass Steppe LTER, Colorado, shortgrass prairie, 1997-2010, Ecological Archives
Estimated demographic parameters
- Survival with age for 40 Kansas prairie perennials Journal of Ecology
- Climate driven population models for 10 Kansas prairie forb species Ecological Archives
- Multispecies population model for sagebrush steppe Ecology Letters (parameter estimates in supplementary tables)
- Multispecies population model for sagebrush steppe with climate drivers Journal of Ecology (parameter estimates in Supporting Information)