New study: Patchy longleaf pine regeneration changes fuels and fire behavior
Longleaf pine ecosystems depend on frequent fire which changes competitive and growth dynamics of the ecosystem. However, fire behavior is complex and driven by complex feedbacks between fire effects, fuels, and vegetation. In an intensive field study, we investigated how dense patches of longleaf pine regeneration can change fuels and fire behavior compared to regenerating saplings occuring singly. We found that regeneration have altered fuels, and often reduced fire behavior in a manner that likely shapes spatial dynamics in the ecosystem
New study: Overstory and litter properties drive fuel dynamics
The composition of fire-dependent forests can shift after decades of fire exclusion. Forests can shift to trees with distinct overstory and leaf litter traits that can further suppress fire and make restoration difficult. We compared how leaf litter and overstory properties differed between fire-adapted pines and oaks, and the non-fire adapted species that often encroach after fire suppression. We found that trees produced distinct microclimates and that drying properties of leaf litter varied among species. This information is useful for understanding mesophytic encroachment and for accelerating successful restoration efforts