The role of fine‐root mass, specific root length and lifespan in tree performance: a whole‐tree exploration
Weemstra, Monique et al. (2020), The role of fine‐root mass, specific root length and lifespan in tree performance: a whole‐tree exploration, Dryad, Dataset, https://doi.org/10.5061/dryad.931zcrjg3
Fine-root data were collected from ten temperate broadleaved tree species (Table 1) growing in a common garden forest at the Hollandse Hout, the Netherlands (52°28’N, 5°26’E), established in the 1960s and 1970s. The forest is subjected to a temperate marine climate with mild winters and summers and an annual rainfall of approximately 800 mm (KNMI, 2009). The soil is described as a calcareous and nutrient-rich clay soil with a homogeneous texture throughout the forest, and the groundwater table ranges between 1.6 and 1.2 m below the soil surface (Weemstra et al., 2013).
Fine-root mass and morphology were measured in three monospecific forest plots per species. Per plot, three soil samples up to 1 m depth and randomly distributed over the plot were collected using a 42 mm-diameter root auger, the roots washed out, separated into fine and coarse roots based on their diameter (fine roots being < 2 mm diameter) and weighed. As roots were sampled with a root auger and cut into smaller fragments, we were unable to accurately sort roots based on their order. Fine roots were scanned, the scans were analysed with WinRhizo (Regent Instruments, Quebec, Canada) to determine total fine-root length, mean diameter and mean root volume, and the fine roots were oven-dried at 60° C for 48h to determine dry mass. Fine-root SRL was calculated by dividing fine-root length by dry weight, fine-root tissue density was calculated by dividing fine-root dry weight by fine-root volume, and fine-root length density (fine-root length per soil volume) was calculated by multiplying SRL and fine-root mass.
Netherlands Organisation for Scientific Research (NWO), Award: 022.002.004
Netherlands Organisation for Scientific Research (NWO), Award: 864.14.006