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Restoration of presettlement age structure of an Arizona ponderosa pine forest

Joy Nystrom Mast, Peter Z. Fulé, Margaret M. Moore, W. Wallace Covington, Amy E. M. Waltz


Summary - what did the authors do and why?

The authors reconstructed historical forest stand structure of a ponderosa pine forest prior to Euro-American settlement and compared pre- and post-historic reference age structure, and they compared forest conditions after restoration treatments were applied to the site.

Publication findings:

The authors found that the stand age distribution was multimodal with peaks of establishment due to interruptions to the historical frequent-fire regime. Due to fire exclusion, reduced understory competition, and favorable climate, abundant regeneration in the 20th century raised forest density from 60 trees/ha in 1876 to >3000 trees/ha in 1992.

Fire and Ecosystem Effects Linkages

The authors found that the stand age distribution was multimodal with peaks of establishment due to interruptions to the historical frequent-fire regime. Due to fire exclusion, reduced understory competition, and favorable climate, abundant regeneration in the 20th century raised forest density from 60 trees/ha in 1876 to >3000 trees/ha in 1992.

The authors found that the stand age distribution was multimodal with peaks of establishment due to interruptions to the historical frequent-fire regime. Due to fire exclusion, reduced understory competition, and favorable climate, abundant regeneration in the 20th century raised forest density from 60 trees/ha in 1876 to >3000 trees/ha in 1992.