Vascular plant community data for Northwest Territories, Canada

Climate change is altering disturbance regimes outside of historical norms, which can impact biodiversity by selecting for plants with particular traits. The relative impact of disturbance characteristics on plant traits and community structure may be mediated by environmental gradients. We aimed to understand how wildfire impacted understory plant communities and plant regeneration strategies along gradients of environmental conditions and wildfire characteristics in boreal forests. We established 207 plots (60m2) in recently burned stands and 133 plots in mature stands with no recent fire history in comparable gradients of stand type, site moisture (drainage), and soil organic layer (SOL) depth in two ecozones in Canada’s Northwest Territories. At each plot, we recorded all vascular plant taxa in the understory and measured the regeneration strategy (seeder, resprouter, survivor) in burned plots, along with seedbed conditions (mineral soil and bryophyte cover). Dispersal, longevity, a...

气候变化正以超出历史常态的方式改变生态系统的干扰机制，这会通过筛选具有特定性状的植物而影响生物多样性。干扰特征对植物性状及群落结构的相对影响可能受环境梯度的调节。本研究旨在探究北方森林中，野火如何沿环境条件与野火特征梯度影响林下植物群落及植物再生策略。我们在加拿大西北地区两个生态区内，沿林分类型、立地湿度（排水状况）及土壤有机层（SOL）厚度的可比梯度，于近期过火林分设置207个样方（60平方米），并在无近期火史的成熟林分设置133个样方。在每个样方中，我们记录林下所有维管植物类群；在过火样方中，还测定了植物再生策略（种子繁殖型、萌蘖繁殖型、存活型）及苗床条件（矿质土壤与苔藓覆盖度）。传播能力、寿命、以及……