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How early do Cerrado grasses become fire-resilient? Insights from an ontogenetic experiment.
PubMed · 2026-05-09
Native Brazilian savanna grasses can survive fire as early as 3 months old, but plants 12–18 months old recover best. This finding helps land managers time prescribed burns to protect young plants during ecological restoration.
1
Survival rates exceeded 50% even at 3 months of age, rising above 70% in older plants and reaching nearly 100% by 12 months.
2
Plants burned at 18 months accumulated the most biomass after fire, likely because they had larger underground reserves and more buds ready to resprout.
3
Burning just before the dry season significantly slowed recovery compared to burns timed at other points in the year.