Demography of two tundra plants (Silene acaulis and Bistorta vivipara) across their North American latitudinal ranges.

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.

本数据集针对两种长寿、适冷且非克隆型的苔原植物——无茎麦瓶草（Silene acaulis）和拳参（Bistorta vivipara）——的多个种群，测定了其种群统计参数（存活、生长、繁殖与种群补充）。采样纬度范围从北纬36度（美国新墨西哥州北部桑格雷克里斯托山脉）至北纬69度（阿拉斯加北坡）。所有种群自2001、2007或2008年（依种群具体情况而定）建立以来，每年均开展监测，直至2022年。自2008年起，所有种群同步开展全年土壤温度监测。本数据集旨在揭示气候变异如何影响这两种植物的种群动态，以及分布范围边缘种群与核心种群之间的种群动态差异。目前种群动态监测工作仍在持续，后续将随数据收集进度追加新增数据。数据文件包含各年度的单株植物监测数据。