Physiological trait coordination and variability across and within three Pinus species

Studies have explored how traits separate plants ecologically and the trade-offs that underpin this separation. However, uncertainty remains as to the taxonomic scale at which traits can predictably separate species. We studied how physiological traits separated three Pinus (P. banksiana, P. resinosa, P. strobus) species across three sites. We collected traits from four common leaf and branch measurements (light and CO2 response curves, pressure-volume curves, hydraulic vulnerability curves) across each species and site. While common, these measurements are not typically measured together due to logistical constraints. Few traits varied across species and sites as expected given the ecological preferences of the species and environmental site characteristics. Some trait trade-offs present at broad taxonomic scales were observed across the three species, but most were absent within species. Certain trade-offs contrasted expectations observed at broader scales but followed expectations gi..., , , # Physiological trait coordination and variability across and within three Pinus species

[https://doi.org/10.5061/dryad.5hqbzkhdn](https://doi.org/10.5061/dryad.5hqbzkhdn)

Included are physiological data collected from three pine species (*Pinus banksiana, P. resinosa, P. strobus*) across three different sites (Scott Lake, Gotham Jack, Mecan River). Cells with 'N/A' represent data that was not collected for specific individuals due to time constraints. 

**Description**

*Site*: the site the sample is from

*Species*: the current scientific name of the species

*LMA.ai*: the leaf mass per area of the leaf used of the light response curve (g m-2)

*LMA.aci*: the leaf mass per area of the leaf used for the CO2 response curve (g m-2)

*k*: the Michaelis Menten value obtained from the light response cure, which is the light level at which 50% of maximum photosynthesis is reached (µmol m-2 s-1)

*Amax*: mass-based maximum photosynthesis (µmol g-1 s-1)

*Rd*: mass-based respiration (µmol g-...