Abiotic factors modify ponderosa pine regeneration outcomes after high-severity fire

Large high-severity burn patches are increasingly common in southwestern US dry conifer forests. Seed-obligate conifers often fail to quickly regenerate large patches because their seeds rarely travel the distances required to reach the core patch area. Abiotic factors may further alter the distance seeds can travel to regenerate a patch, which would change expected post-fire regeneration patterns. We used the presence and density of ponderosa pine regeneration as a proxy for seed dispersal to quantify the effect of abiotic factors on seed dispersal into high-severity patches. We established 45 transects in burn patches across the Gila National Forest, NM, USA to measure regeneration density in areas that varied by aspect, slope, and prevailing wind direction relative to intact forest. We modeled the effect of abiotic features on regeneration presence and density, comparing density estimates against a distance-only model to assess differences in model performance and expected regenerati..., , , # Abiotic factors modify ponderosa pine regeneration outcomes after high-severity fire

[https://doi.org/10.5061/dryad.2547d7wxh](https://doi.org/10.5061/dryad.2547d7wxh)

The data and code included in this dryad submission were used to analyze the effect of abiotic factors on measured ponderosa pine regeneration patterns and use modeled results to extrapolate expected regeneration patterns across high-severity burn patches. Datasets include the locations of all measured regeneration that occurred within transects, stand structure data of intact forest, and transect-level data of regeneration densities collected from areas within and around high-severity burn patched formed from 1989-1995 in the Gila National Forest, NM, USA. These data were used to model the effect of slope, wind, and the relative position of seed sources on regeneration patterns, which we used to extrapolate expected regeneration densities. This dataset also includes spatial data of the study area, including aspect, e...