The impacts of high-intensity wildfires on red imported fire ant Solenopsis invicta abundances in forest systems are currently unknown. The purpose of this study was to evaluate the effects of a high-intensity wildfire around pond edges on red imported fire ant captures in the Lost Pines ecoregion of Texas, which provides habitat for most of the remaining endangered Houston toads Bufo houstonensis. The red imported fire ant is a known predator of Houston toads, and thus there is interest in understanding the potential and realized impacts of this species on Houston toad survivorship. Our results suggest the wildfire did not directly impact captures-per-unit-effort, but it had indirect positive impacts through reductions in canopy cover due to overstory tree mortality. The results of this study indicate that both area occupied by red imported fire ants and site-specific red imported fire ant densities could increase dramatically in the Lost Pines as a result of the wildfire and subsequent human-based recovery efforts.
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