Eriophorum vaginatum rhizome nitrogen content from the 2007 Anaktuvuk River fire scar measured in 2019.

This file contains Eriophorum vaginatum rhizome biomass from a 2017 biomass pluck of previously burned tundra (2007 Anaktuvuk River Fire) and nearby unburned tundra. Rhizome biomass from the pluck was combined with rhizome percent nitrogen estimates (2.47% at the Anaktuvuk River Fire, and 1.05% at the nearby unburned site) to estimate grams of nitrogen per meter squared, to evaluate differences in winter forage quality for the rodent herbivore, Microtus oeconomus. Percent nitrogen estimates were derived from pooled rhizome samples collected from the two sites in late 2018. The goals of the project were to examine the impact of post-fire changes in plant community composition, nutrient quality and structure on habitat suitability and rodent herbivore activity in response to a large, severe, and unprecedented fire in northern Alaska moist acidic tundra.本数据集包含2017年对2007年阿纳克图克河火灾（Anaktuvuk River Fire）火烧迹地及邻近未火烧苔原开展的生物量采样所获得的白毛羊胡子草（Eriophorum vaginatum）根茎生物量数据。研究人员将本次采样获取的根茎生物量与根茎氮含量百分比估算值（火烧样地为2.47%，邻近未火烧样地为1.05%）相结合，计算得到每平方米的氮含量（克），以此评估啮齿类草食动物根田鼠（Microtus oeconomus）的冬季饲草品质差异。上述氮含量百分比估算值来源于2018年末从两个样地采集的混合根茎样本。本项目旨在探究阿拉斯加北部湿润酸性苔原发生的一场大规模、严重且史无前例的火灾后，植物群落组成、营养质量与结构的变化对栖息地适宜性及啮齿类草食动物活动的影响。