Allometric regression statistics for 285 North American tree species

Scaling patterns in plants have long interested biologists, particularly whether different species share similar patterns of growth, and whether differences in growth trajectories depend on plant size.  Using 8,794,737 measurements for 285 species from the U.S. Forest Inventory and Analysis database, we test several predictions emerging from a recently published “flow similarity” model for plant growth and allometry. We show that the model’s predicted curvature for intraspecific relationships between height, DBH and biomass is found in 88.1% of examined cases, and empirical slopes fall as predicted between the elastic similarity and flow similarity predictions in 71.1% of cases. We also find a strong size dependence in observed intraspecific allometric exponents, with large species, particularly gymnosperms, converging near the expectation for elastic similarity, and the central tendency among small species approaching the expectations for flow similarity in most cases. Our results supp..., The data from which these regression statistics were generated is publically available as cited in the manuscript., , There are two supplementary tables in support of our manuscript: **SMA Regression Statistics Table** and **FIA BigTree Comparison Table**

The data in the **SMA Regression Statistics **table are allometric regression statistics for 285 North American tree species contained within the USFS Forest Inventory and Analysis (FIA) database, which are all publicly available as cited in the manuscript. FIA records tree DBH, Height and estimates Biomass for all tree species greater than 5 in DBH in their plots. For details on FIA methods see references cited in the manuscript accompanying this dataset. See manuscript for full description.

For the **SMA Regression Statistics Table**, column headers are as follows:

**Common Name** - the common name for that species recorded in FIA database

**Genus** - The genus

**Species** - The species

**AngiospermGymnosperm** - 1 if gymnosperm, 0 if angiosperm

**SpeciesCode** - the FIA species code

**HvsDslope** - SMA regression slope for the height vs dia...