Long-term population dynamics of individually mapped Sonoran Desert winter annuals from the Desert Laboratory, Tucson AZ

Desert annual plants have played an important role as model organisms in the development of understanding of how organisms adapt to variable and unpredictable environments. They have also been used to exemplify ideas about non-equilibrium community dynamics. The goal of this data set is to provide a comprehensive long-term data set on demographic variation and covariation for a guild of desert winter annual plants. Germination, survival fecundity and seed bank dynamics have been assessed on a set of permanent plots since 1982 at the Desert Laboratory in Tucson, Arizona. Data is provided for individual plant including germination date, death date, fecundity, viable seed bank and in some years, Cartesian coordinates within plots. Viable seed densities for replicated soil samples are provided for all species since 1990. A species by year summary of vital rates is also provided.

荒漠一年生植物作为模式生物，在推动生物适应多变且不可预测环境的机制研究进程中发挥了关键作用。同时也被用于阐释非平衡群落动态（non-equilibrium community dynamics）相关理论。本数据集旨在为一组荒漠冬季一年生植物功能群提供一套全面的长期种群动态变异与协变数据集。自1982年起，亚利桑那州图森市荒漠实验室（Desert Laboratory）已在一系列永久样地中对萌发率、存活率与繁殖力以及种子库动态展开长期监测。数据集包含单株个体的相关数据，具体包括萌发日期、死亡日期、繁殖力、有效种子库信息，部分年份还记录了样地内的笛卡尔坐标（Cartesian coordinates）。自1990年起，数据集提供了所有物种的重复土壤样本有效种子密度数据，同时还附带分物种、分年份的生命率汇总信息。