Data from: Integrating demographic niches and black spruce range expansion at subarctic treelines ...

• Main Authors: Goodwin, Katie, Brown, Carissa
• Format: Dataset
• Language: English
• Published: Dryad 2022
• Subjects: Picea mariana; regeneration niche; seed production; seedling emergence; Species range edges; FOS: Biological sciences; Canada; Goodwin; Yukon; Subarctic; Tundra
• Online Access: https://dx.doi.org/10.5061/dryad.573n5tbbc; https://datadryad.org/dataset/doi:10.5061/dryad.573n5tbbc

When investigating relationships between species’ niches and distributions, niches can be divided demographically, resulting in unique niches for different life stages. This approach can identify changing substrate requirements throughout a species’ life cycle. Using non-metric multidimensional scaling, we quantified microsite conditions associated with successful recruitment in the tundra landscape and successful seed production amongst adult trees of black spruce (Picea mariana) at subarctic treeline in Yukon, Canada to assess how life stage-specific requirements may impact the distribution of this widespread boreal tree species. Treeline ecotones in this region showed high heterogeneity in tundra microsites available for establishment. Black spruce exhibited changing microsite associations from germination to reproductive maturity, which were mainly driven by changes in plant community and soil moisture. These associations limit the microsites where individuals can establish and reproduce to a subset ... : Data from Goodwin and Brown "Integrating demographic niches and black spruce range expansion at subarctic treelines" published in Oecologia ...