An updated global dataset of phosphorus addition experiments in natural terrestrial ecosystems

The dataset is an extension of our previously published dataset in the forests, grasslands, and tundra (Hou et al. 2019, 2020). Our previous dataset included only the latest measurement of plant response to the highest level of P-addition in each experiment to avoid pseudoreplication in studying the global distribution and magnitude of P limitation (Hou et al. 2020). In this dataset, we included time series of plant response to all levels of P-addition in each experiment to explore how experimental duration and P-addition quantity would affect P-addition effect both at individual sites and across sites. We used the study site as a clustering variable in our statistical analyses to account for the dependence among multiple observations of plant response to P additions at a site. Observations of community-level leaf P and N concentrations and N:P mass ratio were collected and added to this dataset to explore the consistency between them and P-addition experiments in indicating latitudinal gradient in P limitation. ReferencesHou, E., Luo, Y., Kuang, Y., Chen, C., Lu, X., Jiang, L. et al. (2019). A global dataset of phosphorus addition experiments in terrestrial ecosystems. Retrieved from: https://doi.org/10.6084/m9.figshare.8969963Hou, E., Luo, Y., Kuang, Y., Chen, C., Lu, X., Jiang, L. et al. (2020). Global meta-analysis shows pervasive phosphorus limitation of aboveground plant production in natural terrestrial ecosystems. Nature Communications, 11, 637.