| Summary: | All demographic rates (survival, growth, reproduction, and recruitment) were measured for two long-lived, cold-adapted, non-clonal tundra plants (Silene acaulis and Bistorta vivipara) in multiple populations from 36 degrees N latitude (Sangre de Cristo Mountains, northern New Mexico) to 69 degrees N latitude (Alaska's North Slope), every year since populations were begun in 2001, 2007, or 2008 (depending on population) until the present (2022). Soil temperature was also measured over the entire year in all populations since 2008. The purpose of the dataset was to understand how climatic variation affects demography of the two plants and how demography differs between populations near the range edge and populations closer to the range center. The demographic census is ongoing, so new data will be added as they are collected. The data files include data on individual plants across years.
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